article 230- 95 (c) ques?
- Thread starter wireman1
- Start date
- Status
jumper
Senior Member
- Location
- 3 Hr 2 Min from Winged Horses
Zog, Brian J, Jim D...ring, ring.
Not excluding others they are just the first to pop into my head.
Not excluding others they are just the first to pop into my head.
- Location
- Wisconsin
- Occupation
- PE (Retired) - Power Systems
Primary injection testing means we actually run up to 1200A through the ground fault sensors. The actual steps depend on the actual equipment. During this test the neutral isolating link and the ground bonding jumper need to be 'manipulated, so a power outage is required.
The 'push to test' button on GF equipment is used to check the 'electronics' of the GF relay. The button does not perform a GF system test as required by most manufacturers and NFPA standards.
The 'push to test' button on GF equipment is used to check the 'electronics' of the GF relay. The button does not perform a GF system test as required by most manufacturers and NFPA standards.
Primary and secondary current injection tests are normally conducted to check the operation of breaker and their protective relays/devices.
The protective devices installed vary from circuit to circuit depending on the protection needs and philosphy but typical relays/devices include overload, over current, reverse power, earth fault, differential protection, etc.
Primary injection testing normally involves injecting the actual current required to operate a protective device power through the circuit breaker.
The protective devices installed vary from circuit to circuit depending on the protection needs and philosphy but typical relays/devices include overload, over current, reverse power, earth fault, differential protection, etc.
Primary injection testing normally involves injecting the actual current required to operate a protective device power through the circuit breaker.
- Status