Primary Injection Test Set

Testing especially if the protective fear is connected to the power line via a current transformer it is advisable to carry out primary injection testing
These sets have been designed to enable the users of heavy electrical equipment to carry out such tests as have been described above with a maximum efficiency at minimum cost, providing a convenient of delivering, controlling and measuring a heavy current in a comparatively low voltage low impedance circuit.
Ideal for testing circuit breakers, ammeters with or without current transformers and much other application where a heavy current supply of short duration is required