WESTINGHOUSE SILENT SENTINEL CH.1 Flashcards
1
Q
A WELL DESIGNED PROTECTIVE RELAY SYSTEM SHOULD PROVIDE THREE BASIC OPERATIONAL CHARACTERISTICS WHAT ARE THEY
A
RELIABILITY, SELECTIVITY, AND SPEED
2
Q
A HIGH SPEED RELAY IS DEFINED AS A RELAY THAT HAS AN OPERATING TIME WHICH DOES NOT EXCEED
A
3-5 CYCLES
3
Q
PROTECTIVE RELAY ZONES OF PROTECTION ARE OVERLAPPED TO ____________.
A
AVOID LEAVING UNPROTECTED AREAS
4
Q
THE ACCEPTED INDUSTRY STANDARD FOR SHOWING RELAY CONTACTS ON A CIRCUIT DIAGRAM IS TO SHOW THE CONTACTS IN THE POSITION THEY ASSUME WHEN THE RELAY IS
A
DE-ENERGIZED
5
Q
THE DEVICE DESIGNATION 52Y INDICATES THE DEVICE IS A
A
CIRCUIT BREAKER ANTI-PUMP AUXILARY
