Primary Injection Testing

For primary injection testing, high current is injected on the primary side of the current transformer. The entire chain — current transformer, conductors, connection points, relay protection and sometimes circuit breakers as well is covered by the test. The system being tested must be taken out of service during primary injection testing, usually conducted in connection with commissioning.

Low voltage circuit breakers are used in distribution networks, in industry, ships, trains etc. Reliable operation of LV-breakers is in many cases very important, for example in nuclear power plants, subways and oil platforms. The only way to verify that a direct-acting low voltage circuit breaker operates properly is to inject a high current.
 
  ODEN AT - Primary Current Injection Test System

ODEN AT is a powerful test system designed for primary injection testing of protective relay equipment and circuit breakers. The powerful measurement section can display transformation ratio as well as time, voltage and current. A second measurement channel can be used to test an additional current or voltage. Current transformer turns ratio, impedance, resistance, power, power factor (cos φ) and phase angle are calculated and shown in the display.
 
  ODEN A - Primary Current Injection Test System

ODEN A is a powerful test system designed for primary injection testing of protective relay equipment and circuit breakers. It is also used to test the transformation ratio of current transformers and for other applications that require high variable currents.
  CSU600A / 600AT™ - Current Supply Units
 
CSU600A and CSU600AT supply units have two main fields of application. The first is to conduct primary tests on protective relays. A primary test shows whether all parts of the protection system are functioning together properly within the specified time limits under operating conditions.
The second field of application involves conducting current tests on low-voltage circuit breakers and overcurrent devices.
  TM200 Timer
 

For use with CSU600A current supply unit or ODEN A primary current injection test system.