Vanguard CT-7500 - Manual (Page 25)

MODEL CT-7500 OPERATING INSTRUCTIONS
Rev 2 Jan 2001
19
9.0 OPERATING PROCEDURES
The main steps to time a circuit breaker are listed below (Figure 9-0). Figure 9-1 is a user's
"map" of all menus for operating a CT-7500.
Figure 9-0. CT-7500 Operating Steps
Note
To reduce the possibility of damaging the CT-7500 contact channels by static discharge in the
high voltage substation, we recommend the user to ground one side of the breaker’s bushings.
HOOKUP CT-7500
1. GROUND CT-7500 (See note)
2. CONNECT CT-7500 CABLES TO BREAKER
3. INSTALL TRANSDUCER
APPLY POWER
1. TURN CT-7500 POWER ON
2. PERFORM SELF TEST (HOOK-UP TEST,
CABLE TEST)
TIMER BREAKER
1. SELECT CT-7500 TEST
2. OPERATE BREAKER
GET RESULTS
1. GET TABULATED RESULTS
2. GET GRAPHIC RESULTS
3. SAVE TIMING SHOT