Methods of testing circuit breakers:
- Primary Injection – done by injecting the actual current required to energize the circuit breaker. This test makes the circuit breaker interrupt large currents thus shortening its life.
- Secondary Injection – done by injecting a current with the contacts closed but with no current flowing on the poles. This is a better way of testing circuit breakers because it uses low voltage signals that are injected to the circuit breaker which prolongs the operating life.
The Square D by Schneider S33595 Secondary Injection Test Set, a full function Secondary Injection Test Set kit is designed to perform tests on Micrologic, NT and STR Trip units.
Square D by Schneider S33595 applications:
• Secondary Injection Testing
• Manual Trip Curve Test
• Automatic Trip Curve Test
• Zone-Selective Interlocking Test
• Ground-Fault Inhibit
• Thermal-Imaging Inhibit
Related electrical test equipment available for rent from Protec: