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Maintenance
Will cause death and serious injury.
Follow safe procedures, exclude unnecessary personnel and use safety barriers. Keep away from the circuit breaker during application of test voltages. Disconnect the split plug jumper from between the circuit breaker and switchgear before conducting
Vacuum interrupters may emit
Can result in serious injury.
Keep personnel more than six feet away from a circuit breaker under test.
High-potential tests
The next series of tests (vacuum integrity and insulation) involve use of
Vacuum-integrity check (using dielectric test)
A
High-potential test voltages
The voltages for
Note: Do not use dc
50