Hager General Catalogue 2017-18

2.60

Data is subject to errors and technical modifications.

Modular Devices

& Enclosures

Transformers

Technical Data

Safety Transformers

These transformers are designed to ensure personal safety, their

primary winding are electrically separated from their secondary

windings and they are intended to feed separated extra low voltage

circuits U ≤ 50V. A thermal overload, in the primary windings, ensures that if a

short circuit or an overload occurs in the output it will not damage the device.

Bell Transformers

Bell transformers are similar to safety transformers but the

secondary voltages do not exceed 24 volts, they are also similarly protected

against short circuits and overloads, by thermal protection in the primary

winding.

Compliance with the Standards

The bell and safety transformers conform with BS EN 61558.

Where transformers are to be used in a common enclosure with other devices

heat dissipation inserts LZ060 should be used.

Recommendation of Use

• To link only one secondary (never link both simultaneously)

• Do not connect (in series or in parallel) secondaries of different

transformers

24 V

230 V

Technical Specification

ST301

ST303

ST305

ST312

ST313

ST314

ST315

Nominal Power

4VA

8VA

16VA

25VA

16VA

40VA

63VA

Designation

Bell

Safety

Primary Voltage

230 Volts

Secondary Voltage

U2 8 Volts

8 Volts

12 Volts

I n = 0.5A

I n =1A

I n = 2A

I n = 2.08A

I n = 1.33A

I n = 3.33A

I n = 5.25A

U3 12 Volts

12 Volts

24 Volts

I n = 0.33A

I n = 0.67A

I n = 1.33A

I n = 1.04A

I n = 0.67A

I n = 1.67A

I n = 2.63A

No Load

U2 12 Volts

15 Volts

12 Volts

14 Volts

16 Volts

14 Volts

Secondary Voltage

U3 18 Volts

22 Volts

19 Volts

29 Volts

30 Volts

27Volts

27 Volts

Galvanic Insulation

4kV

Max Functional Temperature

35ºC

Overload and S/C Protection

Thermal cut out in the primary winding

Insulation Class