Control, isolating and safty transformers STI, STZ, DTZ

All transformers are designed and tested according to the requirements of the IEC/EN 61558. This means that, depending on the specific type, they can be used in accordance with international installation standard IEC/EN 60204.

• Short-circuit current reduction in the event of a fault
• Accommodates the use of ungrounded auxiliary circuits
• Reliable, electrical isolation
• High level of protection for challenging applications such as wet grinders and air movers used on concrete
• Degree of protection IP00
• Tested and build to UL 5085-2 and CSA 22.2 No. 66

STI

Typical applications

• Control voltage circuits
• Functional low voltage
• Safety low voltage
• Protective separation

Basic equipment

• Seperate windings
• Insulation class B
• Ambient temperature -25 up to 40°C
• Connection terminal < 63A
• Frequency 50/60 Hz
• +/-5% tapping on the primary side

Transformers with rated output voltages of 12 V to 42 V can be used as safety isolating transformers in accordance with IEC 61 558.

Designed and tested according

• IEC/EN 61558-2-2 / 2-4 / 2-6
• VDE 0570-2-2 / 2-4 / 2-6
• For use according to IEC/EN 60204-1
• Rated input voltage 230V +/-5%, 400V +/-5%
• Rated output voltage 24 und 230V
• Preferred voltage 400/230 V, 400/24 V, 230/230 V, 230/24 V

STZ

Typical applications

• Control circuits
• Protective separation
• PELV circuit (Safety extra-low voltage)
• FELV circuits (functional extra-low-voltage

Basic equipment

• Seperate windings
• Insulation class F
• Ambient temperature -25 up to 40°C
• Connection terminal < 115A
• Frequency 50/60 Hz
• +/-5% tapping on the primary side

Designed and tested according

• IEC/EN 61558-2-2 / 2-4 / 2-6
• VDE 0570-2-2 / 2-4 / 2-6

For use according to IEC/EN 60204-1

Rated input voltage 50 – 950V +/-5%

Rated output voltage 12 – 1000V

Ordering example STZ0,06(*/*)

  1.* = Rated input voltage

  2.* = Rated output voltage

  Say you wanted model STZ0,06 with a rated input voltage of 230 V and

  a rated output voltage of 12 V. In this case, you would use part no. STZ0,06(230/12)

DTZ

Typical applications

• Control circuits
• Protective separation
• PELV circuit (Safety extra-low voltage)
• FELV circuits (functional extra-low-voltage)

Basic equipment

• Seperate windings
• Insulation class B / F from 8 kVA
• Ambient temperature -25 up to 40°C
• Connection terminal < 115A
• Frequency 50/60 Hz
• +/-5% tapping on the primary side

Transformers with rated output voltages of < 50 V can be used as safety isolating transformers in accordance with IEC 61 558.

Designed and tested according

• IEC/EN 61558-2-2 / 2-4 / 2-6
• VDE 0570-2-2 / 2-4 / 2-6

For use according to IEC/EN 60204-1

Rated input voltage  50 – 950V +/-5%

Rated output voltage 18,5 – 1000V

Ordering example DTZ0,1(*/*)*

1.* = Rated input voltage

2.* = Rated output voltage

3.* = Transformer connection configuration

Say you wanted model DTZ0,1 with a rated input voltage of 200 V, a rated output voltage of 18.5 V, and a DY(n)5 configuration. In this case, you would use

part no. DTZ0,1(200/18,5)DY(N)5