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TRIGGER TRANSFORMERS

GTOs (Gate Turn Off Thyristors) are used as switches for very high powers. The increase in reverse voltage and the rise in power in semiconductor switches have effects on the necessary triggering as well as on the power supply of the triggering electronics close to the gate.

VAC triggering transformers with cores based on the amorphous alloy VITROVAC and the nanocrystalline alloy VITROPERM meet a number of demands:

  • low coupling capacitances and thus high interference immunity, i.e. no unwanted tripping of the semiconductor
  • low leakage inductances and thus steep control impulses that keep their shape
  • small sizes while retaining high isolating voltages
  • no On and OFF switching delay
  • transmission of high instantaneous power
  • wide ambient temperature range (e. g. - 40 °C to +85 °C)
  • Compliance with national and international standards, e.g. VDE 0160, EN 50178, EN 60950, reinforced isolation

Trigger transformers are designed specifically for customers. The transformer types listed are therefore only for guidance and are not type series.

To simplify our design process please complete our checklist with as much data as possible
Checklist Drive Transformer 2011


Transformers for power supply for semiconductor triggering in traction and industry:

Type
T60403-

PÜ
W

Upri
V

Usec
V

Isec
A

f
kHz

Uis,eff
kV

Up,eff
kV

Dimensions
L x B x H
mm x mm x mm

F4160-X…

5,2

12

26

0,2

50

5,6 DC

11

38 x 38 x 30

A4920-X…

200

55

50 + 30

3,0 + 1,6



14,0

22

125 x 60 x 165

F4282-X…

15

21,6…26,4

24

0,6

100

1,4

5,0

56,6 x 28 x 18,5

A4803-X…

22

50

22 (x2)

22 (x2)

100

8,0 DC

12

84 x 60 x 52

Abbreviations and terms used

PÜ [W] Power that can be transmitted
Upri [V] Primary voltage
Usec [V] Secondary voltage
Isec [A] Secondary current
f [kHz] Switching frequency
Uis,eff [kV] Nominal isolation voltage
Up,eff [kV] Insulation test voltage

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Last update: 13.01.2016