What we can offer you

Bildbeschreibung — Dynamic

Products on the line

Our range of product is various and dynamic. Please do not hesitate to contact us with your specifications in case you do not find what you are looking for. We will be pleased to respond immediately and personally to discuss your wishes.

Do you need additional technical information before you can concentrate on a specific product? We have compiled further information for you on the page Technology.

Our selection of tranformers for you

A basic overview with a short explanation.

Control transformers (VDE 0570 / EN 61558-2-1)

Control transformers have galvanically separate windings. Input circuits and output circuits are separated by at least one basic insulation, so that the transformers can be used in all such places where no double or reinforced insulation is required by installation -or device regulations.

Not only can control transformers adapt the voltage requirements of different electricity circuits, more importantly they can be adapted to different technical requirements.

The correspondingly higher current at low output voltage can, for example, be used for heating purposes or even to separate fusible material. It is also common practice to control the speed of motors by adapting the motor voltage and thus to the various operating points of the driven unit such as fans, pumps and the like.

Not to forget the control of illuminants also by adjusting the supply voltage. The equipment to be maintained in industrial applications often requires low voltages of up to 50Vrms.

Such voltages supplied by a mains transformer are considered functional extra-low voltages for which the protection requirements of isolating and safety transformers according to EN 61558-2-4 and EN 61558-2-6 are not valid.

Scope of application
Fixed or variable 1~ or n~ dry-type mains transformers for circuits without specified double or reinforced insulation with:

U1n ≤ 1000 V
Sn ≤ ∞
fn ≤ 500 Hz

U1n ≤ 1000 V
Sn ≤ 1 kVA 1~
Sn ≤ 5 kVA n~
für Sn ≤ 40 kVA (special mains transformer, agreement supplier/ customer necessary)
fn ≤ 500 Hz

The protective insulation may be taken over (or completed) by parts of the device, such as the body. Parts of the output circuits may be connected to the input circuit or to the protective conductor.

Control transformer (VDE 0570 / EN 61558-2-2)

According to EN 61558-2-2, control transformers are used between circuits for which no double or reinforced insulation is specified in installation regulations or equipment regulations. They are used to supply contactors, signalling devices etc. in control circuits. Their design with separate input and output windings provides galvanic isolation of both circuits with a basic insulation that takes into account the expected voltage peaks.
In order to ensure safe operation during switching operations of the inductive loads, two characteristic performance data are particularly important for dimensioning and selecting suitable control transformers:

Short-time power (switch-on power), is the maximum power output in short-time operation with mixed inductive load (cos φ=0.5), whereby the output terminal voltage that is produced must not fall below 95% of the rated voltage.
Rated thermal power (holding power), is the maximum power output in continuous operation under purely active load (cos φ=1). The output terminal voltage may not deviate from its rated value by more than ± 5%.

In principle, the voltage rise between thermal rated power and no-load must not exceed 10% of the load voltage.

Scope of application
Fixed or variable 1~ or n~ dry control transformers for circuits without specified double or reinforced insulation with:

U1n ≤ 1000 V
Sn ≤ ∞
fn ≤ 500 Hz

The protective insulation may be taken over (or completed) by parts of the device, such as the body. Parts of the output circuits may be connected to the input circuit or to the protective conductor.

Isolating Transformer (VDE 0570 / EN 61558-2-4)

The isolating transformer is a transformer that must be used wherever there are increased requirements such as double or reinforced insulation between the input and output circuits.

Field of application
Fixed or variable 1~ or n~ dry isolating transformers with:

U1n ≤ 1000 V
Sn ≤ 25 kVA, 1~transformers
Sn > 25 kVA (special transformer, agreement supplier/ customer necessary)
Sn ≤ 40 kVA, n~transformers
Sn > 40 kVA (special transformer, agreement supplier/ customer necessary)
50 Veff AC < U20 or U2n ≤ 500 V AC
according to national regulations and other special applications:
U20 or U2n ≤ 1000 V AC
120 V DC < U20 or U2n ≤ 708 V DC (smoothed)
according to national regulations and other special applications:
U20 or U2n ≤ 1415 V DC (smoothed)
fn ≤ 500 Hz

Field of application
Wherever the protective measure "protective separation" is required.

Safety Isolating Transformer (VDE 0570 / EN 61558-2-6)

The safety isolating transformer must be used wherever there are increased requirements such as double or reinforced insulation between the input and output circuits.

Field of application
Fixed or mobile 1~ or n~ dry safety transformers with:

U1n ≤ 1000 V
Sn ≤ 10 kVA, 1~Transformers
Sn ≤ 16 kVA, n~Transformers
U20 ≤ 50 V AC
U20 ≤ 120 V DC smoothed
fn ≤ 500 Hz

Field of application
With a safety transformer, for example, a SELV circuit can be implemented.

Autotransformer (VDE 0570 / EN 61558-2-13 Auto transformers (VDE 0570 / EN 61558-2-13 )

Autotransformers are transformers that are suitable for all applications where
no electrical isolation between the input and output circuits is required, can be used.
Fixed or variable 1~ or n~ dry-type autotransformers (instrument transformers or independent transformers) for circuits without specified intermediate insulation with:

U1n ≤ 1000 V
Sn ≤ 20 kVA 1~, (Core power ≤ 1 kVA)
Sn ≤ 100 kVA n~, (Core power ≤ 5 kVA)
(Core power ≤ 40 kVA: special autotransformer with Sn = ∞)
U2n and U20 ≤ 1000 V AC u. 1415 V DC smoothed
applies to independent autotransformers: U20 ≥ 50 V u. 120 V DC smoothed

Notes
Additional requirements may apply:

for on-board operation on ships and aircraft
for tropical use
for special environmental conditions

Application
e.g. as upstream transformer, if the mains voltage differs from the mains voltage of the consumer.
With this type of winding there is a conductive connection between the input and output windings. Therefore, the same potential to earth applies to the winding section with the lower voltage as to the winding with the higher voltage.

The restrictions according to VDE 0100 and VDE 0101 must still be observed.

Depending on the transmission ratio, considerable material savings can be achieved here. The type power is always lower than the rated power.

Example:
Input voltage: 460 V
Output voltage: 230 V
Nominal power: 1000 VA

Type output = Nominal power* (1- Under voltage/ High voltage)

This means that a transformer can be used whose type output is only 500 VA.

Ferrit-Transformatoren Ferrite transformers

Transformers for switching power supplies:
Switch Mode Power Supply (SMP) transformers are used more and more frequently today. The winding parts required for these differ considerably from those in conventional power supplies. The inductive components are designed for a much higher frequency (25 to 300 kHz). In addition, depending on the operating principle, several winding parts are required in addition to the transformer, such as interference suppression chokes, power factor chokes and storage chokes.

Alternativ Text — Bildtitel

Schematic diagram of a switching power supply with the inductive components

All switching power supplies have basically the same principle of operation: The voltage coming from the mains is rectified, or a DC voltage is already available. This voltage is chopped with a correspondingly high frequency by a semiconductor switch, which is controlled by an electronic circuit. The resulting pulses are translated to the desired output voltage via a choke or a transformer and then output as DC voltage via a rectifier, a storage choke and a charging capacitor. If the power is supplied from the mains, a power factor choke converter must be connected upstream in accordance with EN61000-3-2 from a power consumption of 75W, so that the current drawn from the mains remains sinusoidal (cos φ ≈ 1). The control electronics can now be designed in such a way that the output voltage is regulated via the duty cycle. The voltage is then load-independent and the power supply unit is short-circuit-proof.

There are various different types of switching power supply circuits. Basically one differentiates between blocking, flow and resonance converters. Flyback converters are usually all choke converters and converters with a transformer, in which the individual windings are to be regarded as storage chokes. For this reason the transmission ratio of a flyback transformer is not equal to the voltage transmission ratio. In the conducting phase of the switching transistor, the core is magnetised via the primary winding. In the blocking phase of the switching transistor, the magnetic energy of the core is transferred to the output via the secondary winding. In flux converters, as the name suggests, the input voltage is directly transferred in the flux phase of the switching transistor in the ratio of the number of turns and delivered to the output.

The resonance converter is a special case of the flux converter. It uses an oscillating circuit and regulates the output voltage not by the duty cycle but by a change in frequency. The advantage is that the switching transistors can be switched in the current zero crossing.

The most common switching types are described below with their advantages and disadvantages. Depending on the application, you can now select the most favourable switching type. Basic criteria are e.g. power, galvanic separation, interference suppression, effort, price and size.

Overview of the switching types:

Further information on the individual circuit types with circuit diagrams:

Down Converter

Advantages:

Short circuit and open circuit resistance
Easily realizable.
Low switching effort.

Disadvantages:

No galvanic isolation.
Control must float.

Application:

In places where longitudinal regulators cause high losses.

Up Converter

Aufwärtswandler Up-converter

Advantages:

Little effort needed to generate high voltages.
Control is connected to ground

Disadvantages:

No galvanic isolation.

Application:

Battery devices, such as photo flash, mobile phones.

Inverting Converter

Advantages:

Short circuit and open circuit resistance
Easily manufactured
Low switching effort

Disadvantages:

No galvanic insulation.
Controls must float
not idle-proof in unregulated operation

Application:

In places where an non galvanically isolated inverse voltage is required.

Flyback Transformer

Advantages:

Little manufacturing effort requried.
multiple regulated output voltages.
Power up to approx. 300W.
Wide regulation range (for iwde range power supplies without voltage switching).

Disadvantages:

Uds of the transistor ≥ 2 U_e.
Good magnetic coupling.
Requires a large core with air gap.

Single-cycle Flow Converter

Advantages:

Galvanically isolated and regulated output voltage.
Power up to approx. 300W.

Disadvantages:

Uds of the transistor ≥ 2 - Ue.
Good magnetic coupling.
Demagnetization winding.
Storage choke necessary.

Half-bridge Flow Converter

Advantages:

An electrically isolated and regulated output voltage.
Power up to the kW range
U_dsof the transistor = U_e

Disadvantages

Good magnetic coupling.
Complex control of the switching transistors, driver transformer necessary.

Half-bridge push-pull Converter

Advantages:

One galvanically isolated and regulated output voltage.
Power range up to the kW range.
U_ds of the transistor = U_e
No particularly good magnetic coupling necessary.
self-balancing.

Disadvantages:

Complex control of the switching transistors, driver transformer necessary.

Full bridge push-pull Converter

Advantages:

One galvanically isolated and regulated output voltage.
Power up to many kW.
U_ds of the transistos = U_e
No particularly good magnetic coupling necessary.

Disadvantages:

Complex control of the switching transistors.
Driver transformer necessary.
Switching times must be symmetrical.

Push-pull Converter with parallel supply

Advantages:

One galvanically isolated and regulated output voltage
Power up to several 100W
U_ds of the transistor = 2 • U_e.
Simple control, transistors are connected to ground.

Disadvantages:

No very good magnetic coupling necessary.
Switching times must be symmetrical.

Push-pull resonant Converter

Advantages:

An electrically isolated and regulated output voltage.
Power up to many kW.
U_ds of the transistor = U_e.
No particularly good magnetic coupling necessary.

Disadvantages:

Complex control of the switching transistors, driver transformer necessary.
In the partial load range the frequency can reach the audible range.

Full bridge push-pull Converter

Advantages:

One galvanically isolated and regulated output voltage
Power up to many kW
U_ds of the transistor = U_e
No particularly good magnetic coupling necessary.

Disadvantages:

Complex control of the switching transistors.
Driver transformer necessary.
Switching times must be symmetrical.

Push-pull Converter with parallel supply

Advantages:

One galvanically isolated and regulated output voltage
Power up to several 100W
U_ds of the transistor = 2 • U_e.
Simple control, transistors are connected to ground.

Disadvantages:

no very good magnetic coupling necessary.
Switching times must be symmetrical.

Electrical safety:

The necessary clearance and creepage distances, which are required by VDE and EN standards, must be observed! The values that come into consideration here depend primarily on the application, the operating mode and the protection class. A further criterion is the degree of pollution. Depending on the degree of contamination, from open construction to vacuum impregnation to vacuum potting, the clearance and creepage distance can be reduced according to the standard tables.

A special case is the type-tested and monitored production of transformers. Here, for example, the creepage distances can be extremely reduced in vacuum potting. A prerequisite for this, however, is a type test at an approved testing institute. For this purpose, test samples must be prepared and submitted for extensive testing. This type test is only worthwhile for corresponding series sizes. We can, of course, organise test samples and the organisation of the type test at a test institute.

There are various measures to meet these requirements. Here are the most common measures in broad outline:

1. Edge strips on both sides of the windings:

Advantage:

The coupling of the windings is utilized optimally .

Disadvantage:

Elaborate manufacturing required, all rejectors must insulated, otherwise they would be capable of bridging the creepage distances.

2. Edge strips arranged alternated:

Advantage:

Less work needed, if necessary the leads can be led out without additional insulation.

Disadvantage:

The coupling of the windings has lesser strengh.

3. Windings arranged nested:

Advantage:

Coupling is improved even with alternatedly set strips

Disadvantage:

Greater manufacturing effort required, one more full winding is needed.

Impregnation and casting of transformers:

In principle, these measures contribute to electrical safety. Especially in the vacuum process, the windings are secured against slipping. Smaller cavities, such as the feathering as well as unevenness in the edge strips etc., are filled by the impregnating agent. In addition, the penetration of air humidity is prevented. For the different types of impregnation or grouting, different degrees of contamination are specified in the tables for the creepage distances. This allows the creepage distances in the transformers to be reduced. See previous section 'Electrical safety'.

The following options are used:

Without impregnation. Inexpensive, for simple applications.
Air lacquer, dries at room temperature by solvent evaporation.
Also an inexpensive option, but only provides some surface protection.
Two-component impregnating varnish, dip impregnation with oven curing.
Good surface protection, but paint does not penetrate the windings.
Two-component impregnating varnish, vacuum impregnation with oven curing.
Optimum protection, varnish penetrates into the hollow spaces.
Casting with two-component compound in cup.
Inexpensive casting, applicable everywhere where no smaller creepage distances have to be achieved by potting, e.g. toroidal chokes.
Casting with two-component compound under vacuum in the cup.
Optimum casting. The components are cast directly in a vacuum so that almost no air pockets are formed. For type testing (see previous section 'Electrical Safety') the distances in the winding can be reduced to a few mm.

Casting cups:

Casting cups are available for many types. The problem with casting cups is close fitting of cup and coil body. Smallest deviations in shape and dimensions can lead to the fact that a cup of the manufacturer X does not match a bobbin of the manufacturer Y. The coilformer manufacturers have the matching cups available for their coilformers. The variety of manufacturer-specific finenesses, especially for the E-types, must be taken into account. Only the casting cups for the horizontal ETD coilformers up to ETD49 are readily available. Please ask us if you require a specific cup! We almost always have the following type of potting cups in stock:

E13 lg / E16 st / E20 lg and st / E25 lg and st / EC35 / ETD 29 to ETD49 / LP22/13 / LP32/13 and some special types like RM 4 / RM 6 / RM 8 / RM 12 / and some toroidal cores.

For many other types cups are available on request.

UL- Isolationssystem für Ferrittransformatoren: UL insulation system for ferrite transformers:

For exportation to other countries, especially North America, it is advantageous to use components that have UL approval. On request we manufacture our transformers according to our insulation system UL- File No. E193383 up to a temperature range of 155°C. This provides important prerequisites for export, such as UL approval of the complete device in which the transformer is installed.

Transferable power of ferrites:

The maximum transmittable power of ferrite transformers depends mainly on the following factors:

Frame size
Operating mode of the switching power supply unit
Operating frequency
Fill factor of copper
Ambient temperature
Ventilation or cooling

The size is the main factor for the transmittable power. The larger the ferrite core, the more copper can be applied. Due to the larger magnetic cross-section, the number of windings is reduced for the same induction.

Depending on the selected operating mode the ferrite core will be utilized more or less (see table of transmissible power). Which operating mode is selected depends mainly on the application and the required power. (See Switched-mode power supplies overview).

The higher the operating frequency, the greater the transmittable power. As the frequency increases, the induction decreases, the number of windings can be reduced and more copper is applied. The losses in the semiconductors have a disadvantageous effect here, as the switching losses increase at higher frequencies. Depending on the available semiconductor types and the type of switching power supply, a compromise must be sought here. In addition, at higher frequencies the current displacement (skin effect) in the conductor must be taken into account. This means applying several conductors insulated from each other with a smaller cross-section in parallel. HF-stranded wire or thin copper foils are then used for the winding. This results in a worse filling factor, which reduces the transmittable power. See also the following illustrations of the winding structures.

The fill factor of the copper winding indicates the difference between the winding cross-section present in the coil former and the actual copper cross-section that can be applied in practice. In practice, this value is ideally 0.7 or a much smaller value. The decisive factor here is how the actual winding is constructed.

See the following sketches:

Round wire

With round wire, cavities will inevitably occur during winding. These are not filled with copper . The smaller the diameter of the individual wires (HF wire), the more usable surface area is lost through the gaps.

Copper foils

One way to improve the fill factor even at higher frequencies is to use copper foils. Less space is lost in the process. However, this is only beneficial at low numbers of turns and higher currents. With very thin foils, too much of the intermediate insulation is lost.

Profile wires

A further improvement of the fill factor is the use of profile wires, but this is usually not an option at higher frequencies due to the skin effect.

Edge trim or strips

Additionally, the safety distance required by VDE must be maintained, when disconnecting from the mains. Due to the corresponding edge strips additional surface area for the copper is lost here. Smaller creepage distances can be achieved by casting in a vacuum (see Safety of ferrite transformers).

Table of transmittable power of ferrite cores

The specifications in the table on the next page refer to a fill factor of 0.4 but without margin strips. Furthermore, only the pure copper losses with direct current are taken into account. With high frequency, the losses due to the skin effect and the proximity effect must be added. The values in the table are therefore only to be regarded as reference values, since the winding design, will have considerable effect on fill factors and will result in additional losses . Thermal resistance is also an important factor as well as the maximum ambient temperature. Therefore the ventilation at the location where the transformer is installed plays a major role here. In practice it has been found that for safety transformers with corresponding creepage distances depending on the size, the table values given must be reduced as follows for the reasons given above:

For smaller types up to ETD29 by a factor of 0.3 to 0.5; for larger types from ETD34 on by a factor of 0.5 to 0.8.

Theoretically transferable power of ferrite cores

TYPE	Flyback converter		Single-ended flux converter		Push-Pull Flux Converter		Core Specific Information
	25 kHz	100 kHz	25 kHz	100 kHz	25 kHz	100 kHz	Weight gr.	RTH K/W
E13/4	3.1	17.4	3.6	19.9	5.0	28.0	7.2	94
E16/5	8.1	41.5	9.2	47.6	13.0	67.0	13.5	76
E20/6	16.1	73.2	18.5	83.8	26.0	118.0	22.5	50
E25/7	30.4	135.2	34.8	154.8	49.0	218.0	41.0	40
E30/7	58.3	259.2	66.7	296.8	94.0	418.0	47.0	23
E32/9	73.2	325.5	83.8	372.8	118.0	525.0	88.0	22
E40/15	132.7	590.2	151.9	675.9	214.0	952.0	167.0	20
E55/21	333.6	1485.5	382.0	1701.2	538.0	2396.0	340.0	11
EC35	89.9		103.0		145.0		80.0	18
EC41	136.4		156.2		220.0		107.0	15
EFD15		26.0	0.0	29.8		42.0	10.0	75
EFD20		71.3	0.0	81.7		115.0	19.5	45
EFD25		151.9	0.0	174.0		245.0	35.0	30
EFD30		197.8	0.0	226.5		319.0	47.0	25
ETD29	59.5	265.4	68.2	303.9	96.0	428.0	71.0	28
ETD34	93.6	417.9	107.2	478.5	151.0	674.0	94.0	20
ETD39	142.6	634.3	163.3	726.3	230.0	1023.0	139.0	16
ETD44	237.5	1059.0	271.9	1212.7	383.0	1708.0	187.5	11
ETD49	368.3	1639.9	421.7	1878.0	594.0	2645.0	244.0	8
ETD54	556.1	2478.8	636.9	2838.6	897.0	3998.0	320.0	6
ETD59	931.2	4149.0	1066.4	4751.3	1502.0	6692.0	422.5	4
PM50/39	242.4	1080.0	277.6	1236.8	391.0	1742.0	208.5	15
PM62/49	417.3	1860.0	477.8	2130.0	673.0	3000.0	400.0	12
PM74/59	700.6	3121.7	802.3	3574.9	1130.0	5035.0	656.5	10
PM87/70	970.3		1111.2		1565.0		1062.0	8
PM114/70	1837.1		2103.7		2963.0		2416.0	6
LP23/08		29.8		34.1		48.0	23.8	41
LP22/13		70.1		80.2		113.0	40.5	30
LP32/13		101.1		115.7		163.0	62.8	30
PQ20/20		42.2		48.3		68.0	32.0	43
PQ26/25		96.7		110.8		156.0	58.3	24
PQ32/30		193.4		221.5		312.0	99.2	19
PQ35/35		256.1		293.2		413.0	144.2	17
PQ40/40		365.2		418.2		589.0	207.0	12
PQ50/50		649.1		743.4		1047.0	338.7	9
RM 4		14.9		17.0		24.0	5.4	120
RM 5		29.8		34.1		48.0	7.5	100
RM 6		49.0		56.1		79.0	11.8	80
RM 7		66.3		76.0		107.0	17.2	68
RM 8		100.4		115.0		162.0	25.3	57
RM10		179.2		205.2		289.0	40.5	40
RM12		385.6		441.6		622.0	76.5	25
RM14		648.5		742.7		1046.0	119.5	18

Calculation of ferrite transformers:

We will be pleased to assist you in calculating the inductive components for a special application. If you send us a completed questionnaire (at the end of this chapter), we will be pleased to produce a complete set of samples for you.

We will also be pleased to help you in the further development phases and provide you with the greatest possible technical support so that you can successfully carry out the development of your project up to series production readiness. Especially when it comes to high voltage or high current applications, there are special problems which we can help to solve.

Manufacturing:

Winding:
Apart from chokes and transformers, especially for switch mode power supplies, we also manufacture any other type of winding material, such as signal transformers, pulse and high current transformers with copper strip windings, symmetry and compensation coils, disembodied coils with self-bonding enamelled wire or self-supporting. We not only wind all standard coilformers, but also manufacture special coilformers in smaller quantities in special cases, if necessary. Please ask us! Winding is carried out on modern computer-controlled winding machines, whose winding programs are created and optimised centrally.

Impregnation and casting:
We use all the processes described in the section "Saturation Impregnation and casting of transformers". Impregnation and casting under vacuum takes place under "real" conditions: After drying, the winding materials are evacuated in a vacuum chamber. Under this vacuum atmosphere, impregnation or casting is then carried out. Subsequently placed in a normal atmosphere the impregnating or casting agent penetrates into the previously evacuated cavities. This process ensures maximum penetration of the mass.

Final check:
Each manufactured winding part is, if necessary or desired, individually tested for all electrical values on a likewise computer-controlled test station. In addition to the transformation ratio, inductance and high voltage test, this also includes winding resistance, Q-factor, leakage inductance, winding capacity, insulation resistance, layer insulation test by means of surge voltage test as well as pre-calibration with adjustable inductances.

Our construction types in detail

Please first select the type of transformer you require

Standard version of the range *TE

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/B
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Mounting position any
Taps ±5% for voltage adjustment
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets

Options

Manufacturing according to UL 506 with type approval according to UL-File E306982
Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches, temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection

Sketch *TE for max. rated current of 25A:

Sketch *TE for rated current of 25 - 40A:

Sketch *TE for a rated current above 40A:

Measurements and weights *TE

Type	Rated Power in VA at cos φ =1	A	B	C1	C2	D	E	F1	F2	G	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TE-25	25	66	53	78		50	40	33		4,8x9	0.10	0.6
*TE-40	40	66	65	78		50	52	39		4,8x9	0.15	0.9
*TE-50	50	78	58	88	93	56	45	35	44	4,8x9	0.20	1.1
*TE-70	70	84	61	92	97	64	47	36	45	4,8x9	0.25	1.4
*TE-120	120	84	75	92	97	64	61	43	52	4,8x9	0.30	1.9
*TE-150	150	96	76	103	108	84	60	39	48	5,8x11	0.40	2.2
*TE-200	200	96	86	103	108	84	70	44	53	5,8x11	0.45	2.8
*TE-250	250	96	100	103	108	84	84	51	60	5,8x11	0.55	3.5
*TE-300	300	120	88	120	125	90	70	42	51	5,8x11	0.95	4.2
*TE-350	350	120	100	120	125	90	82	48	57	5,8x11	1,00	5.0
*TE-400	400	120	106	120	125	90	90	52	61	5,8x11	1.10	6.0
*TE-600	600	150	107	145	150	122	84	46	55	7x13	1.90	8.0
*TE-800	800	150	124	145	150	122	101	55	64	7x13	2.20	10.5
*TE-1000	1000	174	118	158	163	135	86	47	56	7x13	3.20	12.0
*TE-1200	1200	174	128	158	163	135	96	52	61	7x13	3.30	13.5
*TE-1300	1300	174	138	158	163	135	106	57	66	7x13	3.50	15.5
*TE-1500	1500	174	148	158	163	135	116	62	71	7x13	3.70	17.0
*TE-1800	1800	192	160	185	190	150	104	56	56	10x18	4.90	19.0
*TE-2000	2000	192	163	185	190	150	116	62	62	10x18	5.20	21.6

Subject to technical modifications

The rated power indicated in the table depends on the desired design of the transformer. For example, high-current/ high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.

Standard version of the range *STE

Sketch for control transformer STE:

Sketch for control transformer STE in mounting rail design / for DIN rail TS 35:

Measurements and weights for control transformer *STE

Type	Rated Power in VA at cos φ =1	A	B	C	D	E	F	G	Cu-Weight aprox. kg	Total-Weight aprox. kg
		mm	mm	mm	mm	mm	mm	mm
STE-70	70	84	61	92	64	47	36	4,8x9	0.25	1.4
STE-130	130	84	75	92	64	61	43	4,8x9	0.30	1.9
STE-200	200	96	86	103	84	70	44	5,8x11	0.45	2.8
STE-250	250	96	100	103	84	84	51	5,8x11	0.55	3.5
STE-350	350	120	100	120	90	82	48	5,8x11	1.00	5.0
STE-400	400	120	106	120	90	90	52	5,8x11	1.00	6.0
STE-600	600	150	107	145	122	84	46	7x13	1.90	8.0
STE-800	800	150	124	145	122	101	55	7x13	2.20	10.5
STE-1000	1000	174	118	158	135	86	47	7x13	3.20	12.0
STE-1300	1300	174	138	158	135	106	57	7x13	3.50	15.5
STE-1500	1500	174	148	158	135	116	62	7x13	3.70	17.0
STE-1800	1800	192	160	185	150	104	56	10x18	4.90	19.0
STE-2000	2000	192	163	185	150	116	62	10x18	5.20	21.6
STE-2500	2500	192	163	185	150	116	62	10x18	5.20	21.6

Measurements and weights for control transformer *STE in mounting rail version TS 35

Type	Rated Power in VA at cos φ =1	A	B	C	D	E	F	Cu-Weight aprox. kg	Total-Weight aprox. kg
		mm	mm	mm	mm	mm	mm
STE-70-TS	70	86	83	100	36	87	36	0.25	1.4
STE-130-TS	130	86	83	100	43	87	43	0.30	1.9
STE-200-TS	200	96	83	106	44	92	44	0.45	2.8
STE-250-TS	250	96	83	106	51	106	51	0.55	3.5

Short term power and open circuit voltages

Type	Rated Power in VA at cos φ =1	Voltage- increased in Idle speed aprox. u2%	Short-term load KB Total apparent power requirement at the moment of switching
			cos φ = 0,7 VA	cos φ = 0,6 VA	cos φ = 0,5 VA	cos φ = 0,4 VA	cos φ = 0,3 VA
STE-70	70	8	120	140	160	190	240
STE-130	130	6	190	210	240	290	360
STE-200	200	4	290	330	370	440	530
STE-250	250	5	500	560	640	750	920
STE-350	350	5	680	750	840	970	1140
STE-400	400	3	730	810	910	1040	1230
STE-600	600	3	1020	1100	1200	1320	1490
STE-800	800	4	1510	1620	1760	1950	2200
STE-1000	1000	5	2050	2150	2300	2480	2720
STE-1300	1300	3	3020	3190	3420	3710	4090
STE-1500	1500	3	3600	3780	4030	4360	4780
STE-1800	1800	3	4130	4220	4380	4610	4900
STE-2000	2000	3	4750	4850	5030	5290	5640
STE-2500	2500	3	6900	7110	7440	7880	8450

Subject to technical modifications

The rated power indicated in the table depends on the desired design of the transformer. additional windings ,for example, require a larger winding volume, which reduces the type power and therefore the next larger type must be selected.

How to determine your required transformer size

Normally, a separate performance report is to be prepared for each of the two cases.
For the switching state of the system, the total apparent power S_{short time}, as the decisive transformer short-time power, and the total power factor (cosj_{short time}) must be determined on the basis of the performance data of the equipment:

For continuous operation, the required rated thermal transformer output S_duration is calculated with the individual consumer outputs valid for this purpose:

Total apparent power requirement and total power factor

For your convenience you will find some suggestions on the following page to make it easier for you to choose the right control transformer.

To be able to select the correct total power factor cos φ in the nomograms, the following quantities must be known or must already have been determined by you.

Active power P_total in W (e.g.: 350 W)
Reactive power Q_total in var (e.g.: 550 var)

We assume that the values P_total and Q_total determined by you are dimensioned in such a way that safe switching is guaranteed even with several contactors.

Now draw a vertical line on the x-axis at the determined effective power. Draw another line in the horizontal direction at the reactive power.

At the point of intersection of the two lines, read off the power factor cos φ = 0.54. From this point of intersection, you extend the line in vertical direction upwards until you intersect the line of the total apparent power factor total S_total = 0.54.

From this intersection point, draw a line to the right until you intersect the y axis. At the intersection of the y-axis, you can read the total apparent power requirement of the control transformer (S_total = 652 VA).

The following data is now known:

cos φ = 0.54 - > rounded off 0.50

S_total = 652 VA KB

From the table "Short-term power and open-circuit voltages" in the element "STE", select from the column cos φ=0.5 the control transformer STE-350 with a short-term power of 840 VA KB and a continuous power of 350 VA DB.

Standard version of the series *TU

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/F
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Taps ±5% for voltage adjustment
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Mounting position vertical only
When installing the transformer, care must be taken to ensure that an unobstructed air supply and air removal through the air ducts of the transformer are ensured so that no inadmissible heating can occur.

Optional

Manufacturing according to UL 506 with type approval according to UL-File E306982
Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches; temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection

TUS

Sketch *TUS / vertical design

Measurements and weights for *TUS

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TUS-1.0	1.0	160	121	208	110	85	9x18	4.5	11.5
*TUS-1.5	1.5	160	141	208	110	105	9x18	5.5	16.0
*TUS-2.0	2.0	200	132	257	161	96	9x18	8.0	21.0
*TUS-3.0	3.0	200	157	257	161	121	9x18	9.5	28.5
*TUS-3.0	3.0	221	158	284	160	116	13x22	12.0	30.0
*TUS-4.5	4.5	221	192	284	160	150	13x22	14.5	42.5
*TUS-4.0	4.0	240	163	310	199	121	13x22	15.0	37.5
*TUS-4.5	4.5	240	178	310	199	136	13x22	16.5	41.0
*TUS-5.5	5.5	240	193	310	199	151	13x22	18.0	50.5
*TUS-6.5	6.5	280	173	380	218	131	13x22	24.5	63.0
*TUS-8.5	8.5	280	203	380	218	161	13x22	28.0	81.5
*TUS-10.0	10.0	280	233	380	218	191	13x22	32.0	100.0
*TUS-10.0	10.0	320	193	412	255	141	13x22	36.0	91.5
*TUS-12.0	12.0	320	220	412	255	168	13x22	40.0	112.5
*TUS-14.0	14.0	320	243	412	255	198	13x22	44.0	135.5

Subject to technical modifications

The rated power indicated in the table depends on the desired design of the transformer. For example, high-current/high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.

TUL

Sketch *TUL / horizontal design:

Measurements and weights for *TUL

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TUL-1.0	1.0	166	225	75	146	160	7x13	4.5	11.5
*TUL-1.5	1.5	166	225	95	146	160	7x13	5.5	16.0
*TUL-2.0	2.0	194	265	90	174	200	7x13	8.0	21.0
*TUL-3.0	3.0	194	265	115	174	200	7x13	9.5	28.5
*TUL-3.0	3.0	218	310	100	192	224	7x13	12.0	30.0
*TUL-4.5	4.5	218	310	135	192	224	7x13	14.5	42.5
*TUL-4.0	4.0	234	330	110	204	240	9x13	15.0	37.5
*TUL-4.5	4.5	234	330	125	204	240	9x13	16.5	41.0
*TUL-5.5	5.5	234	330	135	204	240	9x13	18.0	50.5
*TUL-6.5	6.5	274	375	122	234	280	9x13	24.5	63.0
*TUL-8.5	8.5	274	375	152	234	280	9x13	28.0	81.5
*TUL-10.0	10.0	274	375	182	234	280	9x13	32.0	100.0
*TUL-10.0	10.0	315	425	141	264	320	12x18	36.0	91.5
*TUL-12.0	12.0	315	425	168	264	320	12x18	40.0	112.5
*TUL-14.0	14.0	315	425	191	264	320	12x18	44.0	135.5

Subject to technical modifications

The rated power indicated in the table depends on the desired design of the transformer. For example, high-current/high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.

TUK

Sketch *TUK / vertical design with air duct:

Measurements and weights for *TUK / vertical version with air duct:

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TUK-2.5	2.5	200	132	257	161	96	9x18	8.5	21.0
*TUK-3.5x	3.5	200	132	257	161	96	9x18	8.5	21.0
*TUK-3.5	3.5	200	145	257	161	109	9x18	10.0	25.0
*TUK-4.5x	4.5	200	145	257	161	109	9x18	10.0	25.0
*TUK-4.5	4.5	200	157	257	161	121	9x18	10.0	28.5
*TUK-5.0x	5.0	200	157	257	161	121	9x18	10.0	28.5
*TUK-4.5	4.5	221	158	284	160	116	13x22	12.2	30.0
*TUK-5.5x	5.5	221	158	284	160	116	13x22	12.2	30.0
*TUK-6.0	6.0	221	175	284	160	133	13x22	14.0	36.0
*TUK-7.0x	7.0	221	175	284	160	133	13x22	14.0	36.0
*TUK-7.0	7.0	221	192	284	160	150	13x22	15.0	42.5
*TUK-8.5x	8.5	221	192	284	160	150	13x22	15.0	42.5
*TUK-6.0	6.0	240	163	310	199	121	13x22	16.0	37.5
*TUK-7.0x	7.0	240	163	310	199	121	13x22	16.0	37.5
*TUK-7.0	7.0	240	178	310	199	136	13x22	17.0	41.0
*TUK-8.5x	8.5	240	178	310	199	136	13x22	17.0	41.0
*TUK-8.0	8.0	240	193	310	199	151	13x22	18.0	50.5
*TUK-10.0x	10.0	240	193	310	199	151	13x22	18.0	50.5
*TUK-9.5	9.5	280	173	380	218	131	13x22	24.0	63.0
*TUK-12.0x	12.0	280	173	380	218	131	13x22	24.0	63.0
*TUK-11.5	11.5	280	188	380	218	146	13x22	26.0	73.0
*TUK-14.0x	14.0	280	188	380	218	146	13x22	26.0	73.0
*TUK-12.5	12.5	280	203	380	218	161	13x22	28.0	81.5
*TUK-16.0x	16.0	280	203	380	218	161	13x22	28.0	81.5
*TUK-15.0	15.0	280	233	380	218	191	13x22	32.0	100.0
*TUK-19.5x	19.5	280	233	380	218	191	13x22	32.0	100.0
*TUK-15.5	15.5	320	193	412	255	141	13x22	36.0	91.5
*TUK-19.0x	19.0	320	193	412	255	141	13x22	36.0	91.5
*TUK-19.0	19.0	320	220	412	255	168	13x22	40.0	112.5
*TUK-23.5x	23.5	320	220	412	255	168	13x22	40.0	112.5
*TUK-22.5	22.5	320	243	412	255	198	13x22	46.0	135.5
*TUK-30.0x	30.0	320	243	412	255	198	13x22	46.0	135.5
*TUK-19.0x	19.0	360	180	413	280	140	13x22	25.0	80.0
*TUK-21.0x	21.0	360	190	413	280	150	13x22	26.0	87.0
*TUK-23.0x	23.0	360	200	413	280	160	13x22	27.0	94.0
*TUK-25.0x	25.0	360	210	413	280	170	13x22	28.0	101.0
*TUK-27.0x	27.0	360	220	413	280	180	13x22	29.0	108.0
*TUK-29.0x	29.0	360	230	413	280	190	13x22	30.0	115.0
*TUK-35.0x	35.0	460	220	470	360	162	13x22	44.0	127.0
*TUK-39.0x	39.0	460	230	470	360	172	13x22	45.5	138.0
*TUK-43.0x	43.0	460	240	470	360	182	13x22	47.0	149.0
*TUK-47.0x	47.0	460	250	470	360	192	13x22	48.5	160.0
*TUK-51.0x	51.0	460	260	470	360	202	13x22	50.0	171.0
*TUK-55.0x	55.0	460	270	470	360	212	13x22	51.5	182.0
*TUK-59.0x	59.0	460	280	470	360	222	13x22	53.0	193.0
*TUK-66.0x	66.0	480	230	610	360	172	13x22	69.0	197.5
*TUK-72.0x	72.0	480	240	610	360	182	13x22	71.0	210.0
*TUK-78.0x	78.0	480	250	610	360	192	13x22	73.0	222.5
*TUK-84.0x	84.0	480	260	610	360	202	13x22	75.0	235.0
*TUK-90.0x	90.0	480	270	610	360	212	13x22	77.0	247.5
*TUK-96.0x	96.0	480	280	610	360	222	13x22	79.0	260.0
*TUK-102.0x	102.0	480	290	610	360	232	13x22	81.0	272.5
*TUK-108.0x	108.0	480	300	610	360	242	13x22	83.0	285.0
*TUK-114.0x	114.0	480	310	610	360	252	13x22	85.0	297.5

Note:

The rated power indicated in the previous table depends on the desired design of the transformer. For example, high-current/ high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.
The types marked with "x" achieve a higher output for the same size by using a special transformer plate.

Standard version of the range *TUK in housing

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/F
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Taps ±5% for voltage adjustment
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Mounting position vertical only
When installing the transformer, care must be taken to ensure that an unobstructed air supply and air removal through the air ducts of the transformer are ensured so that no inadmissible heating can occur.

Optional

Manufacturing according to UL 506 with type approval according to UL-File E306982 (approval without housing)
Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches; temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection

TUKG

Sketch *TUKG in IP 23 housing

Measurements and weights for *TUKG in IP 23 housing

Type	Rated Power in kVA at cos φ =1	l	l1	b	b1	b2	h1	u1	u2	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TUKG-7.0x	7.0	550	460	490	400	560	550	520	199	16.0	62.0
*TUKG-8.0x	8.0	550	460	490	400	560	550	520	199	17.0	68.0
*TUKG-9.5x	9.5	550	460	490	400	560	550	520	199	18.0	75.0
*TUKG-11.0x	11.0	550	460	490	400	560	550	520	218	24.0	87.0
*TUKG-13.0x	13.0	550	460	490	400	560	550	520	218	26.0	97.0
*TUKG-14.5x	14.5	550	460	490	400	560	550	520	218	28.0	106.0
*TUKG-16.5x	16.5	550	460	490	400	560	550	520	218	32.0	125.0
*TUKG-17.5x	17.5	610	520	540	450	610	630	570	255	36.0	121.0
*TUKG-21.5x	21.5	610	520	540	450	610	630	570	255	40.0	142.0
*TUKG-25.5x	25.5	610	520	540	450	610	630	570	255	46.0	165.0
*TUKG-19.0x	19.0	610	520	540	450	610	630	570	280	25.0	112.0
*TUKG-21.0x	21.0	610	520	540	450	610	630	570	280	26.0	124.0
*TUKG-23.0x	23.0	610	520	540	450	610	630	570	280	27.0	136.0
*TUKG-25.0x	25.0	610	520	540	450	610	630	570	280	28.0	148.0
*TUKG-27.0x	27.0	610	520	540	450	610	630	570	280	29.0	160.0
*TUKG-29.0x	29.0	610	520	540	450	610	630	570	280	30.0	172.0
*TUKG-35.0x	35.0	855	765	620	530	690	690	650	360	44.0	187.5
*TUKG-39.0x	39.0	855	765	620	530	690	690	650	360	45.5	197.0
*TUKG-43.0x	43.0	855	765	620	530	690	690	650	360	47.0	206.5
*TUKG-47.0x	47.0	855	765	620	530	690	690	650	360	48.5	216.0
*TUKG-51.0x	51.0	855	765	620	530	690	690	650	360	50.0	225.5
*TUKG-55.0x	55.0	855	765	620	530	690	690	650	360	51.5	235.0
*TUKG-59.0x	59.0	855	765	620	530	690	690	650	360	53.0	245.0
*TUKG-66.0x	66.0	940	850	640	550	710	820	670	360	69.0	255.0
*TUKG-72.0x	72.0	940	850	640	550	710	820	670	360	71.0	269.5
*TUKG-78.0x	78.0	940	850	640	550	710	820	670	360	73.0	284.0
*TUKG-84.0x	84.0	940	850	640	550	710	820	670	360	75.0	298.5
*TUKG-90.0x	90.0	940	850	640	550	710	820	670	360	77.0	313.0
*TUKG-96.0x	96.0	940	850	640	550	710	820	670	360	79.0	327.5
*TUKG-102.0x	102.0	940	850	640	550	710	820	670	360	81.0	342.0
*TUKG-108.0x	108.0	940	850	640	550	710	820	670	360	83.0	356.5
*TUKG-114.0x	114.0	940	850	640	550	710	820	670	360	85.0	371.0

Subject to technical modifications

The rated power indicated in the following table depends on the desired design of the transformer. For example, high-current/high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.
The types marked with "x" achieve a higher output for the same size by using a special transformer plate.

Standard version of the series *TUKG

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/F
Vacuum impregnation of the windings
Protection class IP23
High-quality sheet steel housing, powder-coated RAL 7032 - pebble grey matt
Taps ±5% for voltage adjustment
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Mounting position vertical only
When installing the transformer, care must be taken to ensure unobstructed air supply and air removal through the air ducts of the transformer to prevent undue heating.

Optional

Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches; temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection
Fittings Armoured thread (PG) or metric (M)

Standard version of the *TD series

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/B
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Mounting position any
Taps ±5% for voltage adjustment (only for star connection)Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Switching group Dyn5

Options

Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches, temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection
Deviating switching groups

TDS

Sketch *TDS / vertical design

Measurements and weights for *TDS vertical design

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TDS-1.3	1.3	210	115	178	162	91	9x18	4.5	14.0
*TDS-1.5	1.5	240	121	214	190	85	9x18	7.0	16.0
*TDS-2.0	2.0	240	141	214	190	105	9x18	8.5	22.0
*TDS-3.0	3.0	300	132	257	220	96	9x18	12.0	33.0
*TDS-4.5	4.5	300	157	257	220	121	9x18	14.5	38.5
*TDS-4.5	4.5	330	158	284	250	116	13x22	18.0	46.5
*TDS-6.5	6.5	330	192	284	250	150	13x22	22.0	65.5
*TDS-6.0	6.0	360	163	310	280	121	13x22	22.5	59.0
*TDS-7.0	7.0	360	178	310	280	136	13x22	24.5	69.0
*TDS-8.0	8.0	360	193	310	280	151	13x22	26.5	78.0
*TDS-9.5	9.5	420	173	380	340	131	13x22	36.5	97.0
*TDS-12.5	12.5	420	203	380	340	161	13x22	42.5	112.0
*TDS-15.0	15.0	420	233	380	340	191	13x22	48.0	125.0
*TDS-15.0	15.0	480	193	412	380	141	13x22	54.0	141.0
*TDS-18.0	18.0	480	220	412	380	168	13x22	60.0	174.0
*TDS-21.0	21.0	480	243	412	380	198	13x22	66.0	210.0

Subject to technical modifications

TDL

Sketch *TDL / horizontal design

Measurements and weights for *TDL horizontal design

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TDL-1.3	1.3	254	205	75	228	140	7x13	4.5	14.0
*TDL-1.5	1.5	290	225	75	258	160	9x13	7.0	16.0
*TDL-2.0	2.0	290	225	95	258	160	9x13	8.5	22.0
*TDL-3.0	3.0	330	265	90	298	200	9x13	12.0	33.0
*TDL-4.5	4.5	330	265	115	298	200	9x13	14.5	38.5
*TDL-4.5	4.5	360	310	100	322	224	9x13	18.0	46.5
*TDL-6.5	6.5	360	310	135	322	224	9x13	22.0	65.5
*TDL-6.0	6.0	394	330	110	358	240	9x13	22.5	59.0
*TDL-7.0	7.0	394	330	125	358	240	9x13	24.5	69.0
*TDL-8.0	8.0	394	330	135	358	240	9x13	26.5	78.0
*TDL-9.5	9.5	452	375	122	408	280	12x18	36.5	97.0
*TDL-12.5	12.5	452	375	152	408	280	12x18	42.5	112.0
*TDL-15.0	15.0	452	375	182	408	280	12x18	48.0	125.0
*TDL-15.0	15.0	535	425	141	480	320	13x20	54.0	141.0
*TDL-18.0	18.0	535	425	168	480	320	13x20	60.0	174.0
*TDL-21.0	21.0	535	425	191	480	320	13x20	66.0	210.0

Subject to technical modifications

TDK

Sketch *TDK / vertical design with air duct

Measurements and weights for *TDK vertical design with air duct

Type	Rated Power in kVA at cos φ =1	A	B	C	D	E	F	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TDK-4.0	4.0	300	132	257	220	96	9x18	12.5	32.0
*TDK-5.5x	5.5	300	132	257	220	96	9x18	12.5	32.0
*TDK-5.0	5.0	300	145	257	220	109	9x18	15.0	38.5
*TDK-6.5x	6.5	300	145	257	220	109	9x18	15.0	38.5
*TDK-6.0	6.0	300	157	257	220	121	9x18	15.0	44.0
*TDK-7.5x	7.5	300	157	257	220	121	9x18	15.0	44.0
*TDK-6.5x	6.5	330	158	284	250	116	13x22	18.5	46.5
*TDK-8.0x	8.0	330	158	284	250	116	13x22	18.5	46.5
*TDK-8.0x	8.0	330	175	284	250	133	13x22	21.0	56.0
*TDK-10.0x	10.0	330	175	284	250	133	13x22	21.0	56.0
*TDK-9.5	9.5	330	192	284	250	150	13x22	22.0	65.5
*TDK-12.0.x	12.0	330	192	284	250	150	13x22	22.0	65.5
*TDK-8.5	8.5	360	163	310	280	121	13x22	24.0	59.0
*TDK-10.5x	10.5	360	163	310	280	121	13x22	24.0	59.0
*TDK-10.0x	10.0	360	178	310	280	136	13x22	25.0	69.0
*TDK-12.5x	12.5	360	178	310	280	136	13x22	25.0	69.0
*TDK-11.5	11.5	360	193	310	280	151	13x22	27.0	78.0
*TDK-14.5x	14.5	360	193	310	280	151	13x22	27.0	78.0
*TDK-14.0	14.0	420	173	380	340	131	13x22	36.0	97.0
*TDK-18.0x	18.0	420	173	380	340	131	13x22	36.0	97.0
*TDK-16.0	16.0	420	188	380	340	146	13x22	39.0	112.0
*TDK-21.0x	21.0	420	188	380	340	146	13x22	39.0	112.0
*TDK-18.0x	18.0	420	203	380	340	161	13x22	42.0	125.0
*TDK-24.0x	24.0	420	203	380	340	161	13x22	42.0	125.0
*TDK-22.0	22.0	420	233	380	340	191	13x22	48.0	156.0
*TDK-29.0x	29.0	420	233	380	340	191	13x22	48.0	156.0
*TDK-22.0	22.0	480	193	412	380	141	13x22	54.0	141.0
*TDK-28.0x	28.0	480	193	412	380	141	13x22	54.0	141.0
*TDK-27.0	27.0	480	220	412	380	168	13x22	60.0	174.0
*TDK-35.0x	35.0	480	220	412	380	168	13x22	60.0	174.0
*TDK-32.0	32.0	480	243	412	380	198	13x22	69.0	210.0
*TDK-43.0x	43.0	480	243	412	380	198	13x22	69.0	210.0
*TDK-25.0x	25.0	540	180	413	475	140	13x22	37.0	124.0
*TDK-28.0x	28.0	540	190	413	475	150	13x22	38.5	135.0
*TDK-31.0x	31.0	540	200	413	475	160	13x22	40.0	146.0
*TDK-34.0x	34.0	540	210	413	475	170	13x22	41.5	157.0
*TDK-37.0x	37.0	540	220	413	475	180	13x22	43.0	168.0
*TDK-40.0x	40.0	540	230	413	475	190	13x22	44.5	179.0
*TDK-43.0x	43.0	540	240	413	475	200	13x22	46.0	190.0
*TDK-51.0x	51.0	690	220	470	590	162	13x22	65.0	200.0
*TDK-56.0x	56.0	690	230	470	590	172	13x22	67.5	215.0
*TDK-61.0x	61.0	690	240	470	590	182	13x22	70.0	230.0
*TDK-66.0x	66.0	690	250	470	590	192	13x22	72.5	245.0
*TDK-71.0x	71.0	690	260	470	590	202	13x22	75.0	260.0
*TDK-76.0x	76.0	690	270	470	590	212	13x22	77.5	275.0
*TDK-81.0x	81.0	690	280	470	590	222	13x22	79.0	290.0
*TDK-92.0x	92.0	720	230	610	600	172	13x22	102.0	304.0
*TDK-100.0x	100.0	720	240	610	600	182	13x22	105.0	327.0
*TDK-108.0x	108.0	720	250	610	600	192	13x22	108.0	350.0
*TDK-116.0x	116.0	720	260	610	600	202	13x22	111.0	373.0
*TDK-124.0x	124.0	720	270	610	600	212	13x22	114.0	396.0
*TDK-132.0x	132.0	720	280	610	600	222	13x22	117.0	419.0
*TDK-140.0x	140.0	720	290	610	600	232	13x22	120.0	442.0
*TDK-148.0x	148.0	720	300	610	600	242	13x22	123.0	465.0
*TDK-156.0x	156.0	720	310	610	600	252	13x22	126.0	488.0

Subject to technical modifications

The types marked with "x" achieve a higher output for the same size by using a special transformer plate.

Standard version of the series *TDK

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Separate windings
Insulation class T 40/F
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Taps ±5% for voltage adjustment (only for star connection)
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 to 60 Hz
Connections with screw terminals or terminal lugs
PE connection to ground terminal
Mounting on mounting brackets
Switching group Dyn5
Mounting position vertical only
When installing the transformer, care must be taken to ensure unobstructed air supply and air removal through the transformer's air ducts to prevent undue heating.

Optional

Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches; temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating switching groups
Deviating degrees of protection

Standard version of the *TDK series in housing

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/B
Vacuum impregnation of the windings
Protection class IP00, prepared for protection class I
Mounting position any
Taps ±5% for voltage adjustment (only for star connection)
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Switching group Dyn5

Options

Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches, temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating degrees of protection
Deviating switching groups

TDKG

Sketch *TDKG in IP 23 housing

Measurements and weights for *TDKG in IP 23 housing

Type	Rated Power in kVA at cos φ =1	l	l1	b	b1	b2	h1	u1	u2	Cu-Weight	Total-Weight
		mm	mm	mm	mm	mm	mm	mm	mm	aprox. kg	aprox. kg
*TDKG-10.0x	10	670	580	490	400	560	550	520	280	24.0	87
*TDKG-12.0x	12	670	580	490	400	560	550	520	280	25.0	97
*TDKG-14.0x	14	670	580	490	400	560	550	520	280	27.0	106
*TDKG-16.5x	16.5	670	580	490	400	560	550	520	340	36.0	125
*TDKG-19.0x	19	670	580	490	400	560	550	520	340	39.0	140
*TDKG-22.0x	22	670	580	490	400	560	550	520	340	42.0	153
*TDKG-25.0x	25	670	580	490	400	560	550	520	340	48.0	184
*TDKG-26.0x	26	770	680	540	450	610	630	570	380	54.0	175
*TDKG-32.0x	32	770	680	540	450	610	630	570	380	60.0	208
*TDKG-39.0x	39	770	680	540	450	610	630	570	380	69.0	244
*TDKG-25.0x	25	770	680	540	450	610	630	570	475	37.0	153
*TDKG-28.0x	28	770	680	540	450	610	630	570	475	38.5	167
*TDKG-31.0x	31	770	680	540	450	610	630	570	475	40.0	181
*TDKG-34.0x	34	770	680	540	450	610	630	570	475	41.5	195
*TDKG-37.0x	37	770	680	540	450	610	630	570	475	43.0	209
*TDKG-40.0x	40	770	680	540	450	610	630	570	475	44.5	223
*TDKG-43.0x	43	770	680	540	450	610	630	570	475	46.0	237
*TDKG-51.0x	51	1050	960	750	660	820	780	780	590	65.0	270
*TDKG-56.0x	56	1050	960	750	660	820	780	780	590	67.5	285
*TDKG-61.0x	61	1050	960	750	660	820	780	780	590	70.0	300
*TDKG-66.0x	66	1050	960	750	660	820	780	780	590	72.5	315
*TDKG-71.0x	71	1050	960	750	660	820	780	780	590	75.0	330
*TDKG-76.0x	76	1050	960	750	660	820	780	780	590	77.5	345
*TDKG-81.0x	81	1050	960	750	660	820	780	780	590	79.0	360
*TDKG-92.0x	92	1150	1060	850	760	920	890	880	600	102.0	400
*TDKG-100.0x	100	1150	1060	850	760	920	890	880	600	105.0	420
*TDKG-108.0x	108	1150	1060	850	760	920	890	880	600	108.0	440
*TDKG-116.0x	116	1150	1060	850	760	920	890	880	600	111.0	460
*TDKG-124.0x	124	1150	1060	850	760	920	890	880	600	114.0	480
*TDKG-132.0x	132	1150	1060	850	760	920	890	880	600	117.0	500
*TDKG-140.0x	140	1150	1060	850	760	920	890	880	600	120.0	520
*TDKG-148.0x	148	1150	1060	850	760	920	890	880	600	123.0	540
*TDKG-156.0x	156	1150	1060	850	760	920	890	880	600	126.0	560

Subject to technical modifications

The rated power indicated in the following table depends on the desired design of the transformer. For example, high-current/ high-voltage windings, additional windings, shield windings or increased requirements for clearance and creepage distances require a larger winding volume, which reduces the type rating and therefore the next larger type must be selected.
The types marked with "x" achieve a higher output for the same size by using a special transformer plate.

Standard version of the series *TDKG

Manufactured according to VDE 0570 / EN 61558 ff. or VDE 0532 / EN 60726
Galvanically isolated windings
Insulation class T 40/F
Vacuum impregnation of the windings
Protection class IP23
High-quality sheet steel housing, powder-coated RAL 7032 - pebble grey matt
Taps ±5% for voltage adjustment (only for star connection)
Input voltages selectable from 200 - 600 V
Output voltages selectable from 200 - 600 V
Rated frequency 50 - 60 Hz
Connections with screw terminals or terminal lugs
PE connection to earthing bracket or terminal
Mounting on mounting brackets
Mounting position vertical only
Switching group Dyn5
When installing the transformer, care must be taken to ensure unobstructed air supply and air removal through the air ducts of the transformer to prevent undue heating.

Optional

Production according to a UL insulation system of insulation class F
Production according to Germanischer Lloyd (gL)
Design for primary-side thyristor control
Temperature switches; temperature fuses, fuse terminals
Deviating input and output voltages
Winding taps
Additional windings
Shield winding
Terminal arrangement
Deviating switching groups
Deviating degrees of protection
Fittings Armoured thread (PG) or metric (M)

E Design

The E- series is the classic design of transformers in general. Due to this fact, there is a very large number of horizontal (horizontal) and vertical (vertical) coilformers in all imaginable shapes for this type. It ranges from coilformers with a particularly large number of solder pins, which can also be arranged asymmetrically, to multi-chamber bodies and special designs with and without housing. To list the possible variations here would go beyond the scope of this brochure. The disadvantage, however, is the angular shape, which cannot be wound very well, especially with copper foils and HF litz wires.

In addition, this design is not optimalas regards transferable power to volume. Despite these disadvantages they are still used for all purposes.

For reasons of extreme diversity, the following table also only shows the absolute core dimensions without coil formers. The actual outer dimensions then depend on the coil former used. The example drawing shows the E25 standard coilformer.

Sketch of the designs:

Measurements E Type

Type	B Fig.1	T Fig.1	H Fig.1	B Fig.2	T Fig.2	H Fig.2
	mm	mm	mm	mm	mm	mm
E6,3	6.3	5.8	2.0	6.3	2.0	5.8
E8,8	9.0	8.2	2.0	9.0	2.0	8.2
E10	10.2	11.0	4.8	10.2	4.8	11.0
E13	12.6	13.0	3.7	12.6	3.7	13.0
E16	16.0	16.4	4.7	16.0	4.7	16.4
E20	20.4	20.2	5.9	20.4	5.9	20.2
E25	25.0	25.6	7.5	25.0	7.5	25.6
E30	30.0	30.4	7.3	30.0	7.3	30.4
E32	32.0	32.8	9,5 / 11,0	32.0	9,5 / 11,0	32.8
E42	42.0	42.4	15,2 / 20,0	42.0	15,2 / 20,0	42.4
E55	55.0	55.6	21,0 / 25,0	55.0	21,0 / 25,0	55.6
E65	65.0	65.6	27.4	65.0	27.4	65.6

Subject to technical modifications

EC Design

The EC series is a compact E core with a round center leg. This core can be wound much better with HF litz, copper foils and thicker enamelled wires than the E cores with square center leg. Many ferrite manufacturers, such as Epcos, supply these cores as EC35 to EC70. Coilformers for this purpose are offered by other manufacturers, such as Norwe. For special applications such as E cores, there are very different types of coilformers. We do not recommend the EC type for new developments, as it will be replaced by the ETD series.

Creepage distances for a mains separation are possible with corresponding edge strips which are also wound in. For the illustrated EC35 coilformer we have a housing (ETD29) in stock. Thus, this EC35 can also be potted under vacuum.

Due to the above mentioned variety of different coilformers, the table shows only the dimensions of the EC35 shown. All other dimensions are only the core outer dimensions.

Sketch of the designs

Measurements EC Design

Type	B	T	H	X	Z	Pin
	mm	mm	mm	mm	mm
EC35/17/10	34.0	35.0	26.0	5.05	30.48	11
EC41/20/12	39.3	40.6	11.9	-	-	-
EC52/24/14	48.7	52.2	13.8	-	-	-
EC70/35/16	69.3	70.0	16.8	-	-	-

Subject to technical modifications

ETD horizontal design

The ETD series (Economic Transformer Design) in horizontal design is a further development of the EC series. It is optimized in terms of performance and has great advantages over other designs. The coil body can be wound optimally due to the round centre slugs, and high-current windings with copper foils can also be easily implemented. For high-current or high-voltage rejections, appropriate rejection options are available on the top left and right.

Creepage distances for a mains separation are also possible with corresponding edge strips which are wrapped in. Since housings are available for almost all types, the transformers can also be potted under vacuum.

Sketch of the designs:

Measurements ETD horizontal design

Type	B	T	H	X	Z	Pin
	mm	mm	mm	mm	mm
ETD29	35.3	35.2	25.0	5.08	25.40	7 / 6
ETD34	39.6	41.8	33.1	5.08	25.40	7 / 7
ETD39	44.6	46.8	35.5	5.08	30.48	8 / 8
ETD44	49.6	51.0	38.4	5.08	35.56	9 / 9
ETD49	54.5	56.2	40.9	5.08	40.64	10 / 10
ETD54	61.6	61.4	46.0	5.08	45.72	12 / 12
ETD59	66.9	66.2	49.2	5.08	50.80	12 / 12

Subject to technical modifications

ETD vertical design

The ETD series (Economic Transformer Design) in vertical (upright) design is used wherever there is enough space in the height and little space is available on the PCB. Like the horizontal ETD types, it also has great advantages over other designs. The coil body can be wound well, even high current windings with copper foils are easily realized. For high-current or high-voltage rejections, appropriate rejection options are available on the top left and right.
Creepage distances for a mains separation are also possible with corresponding edge strips which are wrapped in.

Sketch of the designs:

Measurements ETD vertical design

Type	B1	B2	T	H	X	Y	Z	Pin
	mm	mm	mm	mm	mm	mm	mm
ETD29	35.0	42.1	24.0	40.9	5.08	37.3	20.32	6 / 6
ETD34	38.0	46.5	26.4	43.2	5.08	41.5	22.86	7 / 7
ETD39	44.0	51.5	29.0	47.9	5.08	46.5	25.40	8 / 8
ETD44	49.0	56.3	31.5	51.8	5.08	51.5	27.94	9 / 9
ETD49	54.0	61.4	34.0	56.0	5.08	56.5	30.48	10 / 10
ETD54	60.0	67.7	36.6	61.9	5.08	62.7	33.02	11 / 11
ETD59	65.5	73.1	39.1	66.3	5.08	68.1	35.56	12 / 12

Subject to technical modifications

EFD Design

The EFD series (Economic Flat Transformer Design) is a variation of the classic E series and is only available in horizontal (lying) design. It has been designed for the lowest overall heights and is suitable for normal and SMD assembly. Although the coil body can be wound well, it has hardly any additional height on the underside for rejections that lie across the winding. For this reason, care must be taken during development to ensure that the windings are designed in such a way that, if possible, the rejects can also be rejected on the side where they are wound.

It is also possible to place rejections on the upper side by means of corresponding recesses. Creepage distances for mains separation are possible in principle by means of edge strips, only the distance between the solder pins and the core is a limitation depending on the size.

Sketch of the types

Measurements EFD type

Type	B	T	H	X	Z	Pin
	mm	mm	mm	mm	mm
EFD15	15.0	16.5	8.3	5.0	13.75	4 / 4
EFD20	20.0	20.0	10.4	5.0	17.50	4 / 4
EFD25	25.0	25.0	12.9	5.0	22.50	5 / 5
EFD30	30.0	31.0	13.0	5.0	27.50	6 / 6

Subject to technical modifications

LP Design

The LP series is only available in horizontal (lying) design. It has been designed for lowest overall heights and is the counterpart to the EFD series, but with a round central snout and therefore not quite as flat. Here the same applies as for the EFD series:
Although the coil former can be wound well, it has hardly any additional height on the underside for rejections that lie across the winding. For this reason, care must be taken during development to ensure that the windings are designed in such a way that, if possible, the rejects can also be rejected on the side where they are wound.
It is also possible to place rejections on the upper side through corresponding recesses. Creepage distances for net separation are possible by means of edge strips. For both types, vacuum housings are available.

Sketch of the designs

Measurements LP Design

Type	B	T	H	X	Z	Pin
	mm	mm	mm	mm	mm
LP23/08	16.5	34.0	12.5	3.8	25.4	4 / 4
LP22/13	25.0	31.5	17.6	6.4	20.3	4 / 4
LP32/13	25.0	40.4	17.6	6.4	27.9	4 / 4

Subject to technical modifications

RM Design

The RM series (Rectangular Modular Cores) have a good effective packing density on the PCB. They are a further development of the shell core types of the P-series. Therefore, like the P types, they have only a very small stray field to the outside. They are well suited as power transformers for low to medium power. Creepage distances for mains separation can only be realized to a limited extent due to the sometimes small distance between the pins and the core, especially in the standard version of the coil former. They are used more as signal transformers. For inductances which are to be adjusted to a certain value, it is possible to use a central adjusting screw. The sizes RM4 to RM14 are defined in IEC 60431.

Figures 1 and 2 show the standard version and those for power applications. In addition, there are various special designs, such as cores with a lower height ("low profile"), with a central hole, air gap and adjustment core for adjustable inductors or cores with stepped air gap for non-linear chokes. Coilformers for SMD assembly, choke application without solder pins and coilformers in 2 chamber design. The pin layout differs in some sizes from the drawings shown. Since this is manufacturer-related, we ask for a separate inquiry.

Sketch of the designs

Measurements RM Design

Type	H	H*	B	T1	T2	Pin Fig.1	Pin Fig.2
	mm	mm	mm	mm	mm
RM 4	10.5	7.8	12.0	13.8	-	3 / 3	-
RM 5	10.5	7.8	15.6	16.5	-	3 / 3	-
RM 6	12.5	9.0	19.0	20.0	25.0	3 / 3	4 / 4
RM 7	13.5	9.8	21.5	23.3	-	4 / 4	-
RM 8	16.5	11.6	24.5	23.7	30.0	6 / 6	6 / 6
RM 10	18.7	13.0	30.0	27.6	39.5	6 / 6	6 / 6
RM 12	24.6	16.8	39.0	38.0	45.2	6 / 6	6 / 6
RM 14	30.2	20.5	44.0	42.0	48.5	6 / 6	6 / 6

* = low overall height (Low profile). Subject to technical modifications

P Design

The P series (pot cores) are manufactured in a wide range of sizes. This ranges from P 4.5x4.1 to P 41x25. Due to their magnetically closed design they are very low stray field. The variety of core materials is just as large as the sizes. This ranges from highly permeable material for low frequencies to applications above 100 MHz. The areas of application are e.g. resonant circuit coils (filters) with high inductance constancy and high quality, low-distortion broadband small signal transformers with high Al value up to power transformers in switching power supplies. Most of the cores are available with inserted threaded sleeve and adjustment screw for fine inductance adjustment. Most core sizes are specified in the IEC 60133 standard.

Sketch of the designs

Measurements P Design

Type	H	B	T	Pin	SMD
	mm	mm	mm
P 7 x 4	7.1	7.5	7.5	5	-
P 9 X 5	8.3	9.9	12.3	4 / 6	6
P 11 x 7	9.5	12.3	14.6	4 / 8	-
P 14 x 8	11.3	15.0	16.3	4 / 6	-
P 18 x 11	13.5	19.9	20.0	4 / 8	-
P 22 x 13	16.6	24.5	26.0	4 / 8	-
P 26 x 16	19.0	27.8	28.5	8	-
P 30 x 19	22.8	33.5	33.5	8	-
P 36 x 22	27.0	40.0	41.8	10	-
P 41 x 25	28.1	39.0	42.5	-	-

Subject to technical modification

PM Design

The PM- cores (Pot Modul core) are especially suitable for the transmission of higher power up to approx. 300kHz. This pot core form is characterized by a large magnetic flux cross section, low leakage inductance and good shielding. Applications range from power transformers in industrial technology, such as HF welding, pulse transformers in radar technology, to storage chokes and power transformers in power supply units. Due to the mounting technique using clamps and mounting plate, these transformers can be mounted not only on printed circuit boards, but also on chassis or heat sinks.

Sketch of the designs

PM Design Mesaurements

Type	H	B	T	T1	Pin
	mm	mm	mm	mm
PM 50 / 39	39.6	65.5	59.0	50.0	14
PM 62 / 49	49.6	75.5	69.0	62.0	16
PM 74 / 59	59.6	85.5	83.4	74.0	18
PM 87 / 70	70.6	101.0	94.5	87.0	20
PM 114 / 93	93.0	87.0	-*	114.0	-*

-* The PM114 bobbin is without terminal pins and without mounting bracket. Subject to technical modifications

PQ Design

The PQ series is only available in vertical (standing) design. It has been designed for minimum board space requirements and is a mixture of the RM series and the vertical ETD types. Since the size of the PQ series extends up to the PQ50, correspondingly high output powers can be achieved. A second series with limited height (see dimension table) is also available in some cases. Due to the round center slugs the coil former can be wound well, even high current windings with copper foils can be realized well. In addition, it is possible to place bypasses for high current or high voltage on the upper side through corresponding cut-outs.

Creepage distances for mains separation are possible in principle by means of edge strips which are also wound in. Only the distance between the solder pins and the core of the smaller types is partially limited.

Sketch of the types

Measurements PQ Design

Type	B	T	H *	H	X	Z	Pin
	mm	mm	mm	mm	mm	mm
PQ26	29.6	28.7	25.0	29.6	3.8	25.4	6 / 6
PQ32	34.0	34.4	25.5	35.3	5.1	30.5	6 / 6
PQ35	39.4	37.4	-	39.7	5.1	35.6	6 / 6
PQ40	42.4	42.4	-	44.7	5.1	38.1	6 / 6
PQ50	52.0	53.0	-	59.0	7.6	45.7	6 / 6

* = low overall height, see text. Subject to technical modifications

E Design in housing

Measurements E Design in housing

Type	B Fig.1	T Fig.1	H Fig.1	B Fig.2	T Fig.2	H Fig.2
	mm	mm	mm	mm	mm	mm
E13	13.4	13.4	11.7	11.6	16.2	16.8
E16	17.8	18.3	13.3	12.7	19.8	19.9
E20	21.7	22.6	19.0	18.8	23.8	24.2
E25	26.8	27.1	20.4	20.8	27.7	32.2

Due to the variety of E-coilformers the data in the table are only approximate values. Subject to technical changes

ETD Design in housing

Measurements ETD Design in housing

Type	B	T	H
	mm	mm	mm
ETD29 hor.	37.6	37.4	26.7
ETD34 hor.	45.2	41.7	37.0
ETD39 hor.	50.5	47.1	39.5
ETD39 vert. *	34.0	53.8	52.5
ETD44 hor.	54.8	52.2	42.5
ETD49 hor.	59.9	57.1	45.2

* ETD39 vertical / vertical design, appearance like Fig. 2 E design. Subject to technical modifications

EFD Design in housing

Measurements EFD Design in housing

Type	B	T	H
	mm	mm	mm
EFD20	20.4	20.4	11.8
EFD30	31.0	31.3	14.2

Subject to technical modifications

LP Design in housing

Measurements LP Design in housing

Type	B	T	H
	mm	mm	mm
LP22/13	29.0	34.0	20.5
LP32/13	29.0	43.0	20.5

Subject to technical modifications

Housing for other designs

Housings are also available for many other types, please ask us, we are happy to advise you!