Our Products

Product Details

 
Introduction:
 
ZERA manufactures components and complete testing system for testing laboratories, to test instrument transformers, with an experience of more than
25 years. We are supplier of world-wide customers, manufactures of instrument transformers as well as electricity boards.
 
The system details are described in the following clauses to provide basic information. But nevertheless it is possible to develop or adapt our system for
customer’s requirements.
 
ZERA confi gures instrument transformer testing systems for Current Transformers (CT) or Voltage Transformers (VT) testing as well as combined testing systems for CT and VT testing. ZERA‘s testing systems can be designed for testing instrument transformer manuell or automatic.
Instrument Transformer Test Systems
 
Stationary and mobile Instrument Transformer Test Systems (ITTS) are used for testing current (CT) and voltage (VT) transformers. Possible test are e. g. accuracy test, demagnetisation and insulation test.
 
Stationary and mobile Instrument Transformer Testing Systems
 
Our Instrument Transformer Test Systems (ITTS) are suitable for CT/VT testing according to IEC standards. The system can be operated manually and automatically. If required a mobile use is possible.
 
Sources:
 
Basically the kind of generation and the required frequency is the decisive factor to choose the suitable source.

VRT Voltage Regulating Transformer

Output voltage 0 V ... 400 V *
Main functions
Supply of voltage or current transformer with a variable voltage for testing of CT or VT
Frequency: mains frequency
* According to SCM and/or HVT
Scope of application
Manual control
Testing of instrument transformers
Using the mains frequency

EVRMU ElectronicVoltage Source

Output voltage 0 V ... 400 V *
Frequency 50 Hz / 60 Hz
Main functions
Electronic Voltage Regulating and Measuring Unit
Supply of voltage or current transformer with a variable voltage for testing of CT or VT
Control via PC
* According to SCM and/or HVT
Scope of application
Automatic control
Testing of instrument transformers with 50 Hz / 60 Hz

 

VRT

Voltage Regulating Transformer
 
EVRMU
 
Electronic Voltage Source