CURRENT INJECTION KIT During installation, testing, specially if the protective gear is connected to the power line via a current transformer it is advisable to use our Primary Injection Test Set. Keeping this in mind a wide range of Current Injection Kits are being manufactured. These sets have been designed to enable the users of heavy electrical equipment to carry out such tests as have previously described, with a maximum efficience at minimum cost providing a convenient means of delivering , controlling and measuring a heavy current in a comparatively low voltage low impedance circuit A set like this is ideal for routine testing of circuit breakers, current transformers with or without ammeter and can be used for many other application where a heavy current supply of short duration is required.