Vanguard VBT-60_80 - Manual (Page 16)

VBT-60/80 Operating Procedures
16
6.0 OPERATING PROCEDURES
Review Figures 5 and 6 before proceeding with the step-by-step procedures that follow.
6.1 0 Preparations
a. Make sure the circuit breaker under test is off line and isolated. The vacuum bottle under test
should be isolated and in opened position.
b. Make sure the VBT power switch is in the off position.
c. Ground the VBT to Substation ground.
d. Plug the VBT power cable into a power outlet.
e. Connect the VBT high-voltage cable end (Red clip) to one side of vacuum bottle (see Figures
5 & 6).
f. Connect the VBT high-voltage-return cable (black clip) to the other side of the vacuum bottle.
g. Turn on the VBT power, by pressing the rocker switch to the ON position.
6.1.1 Setup and Run Test Procedure
The following steps are required to run a test with the VBT-60/80 (when power is first applied to
the VBT-60/80).
Table 5. Setup and Run Test Procedure
STEP DESCRIPTION DISPLAY ACTION
1 Initiate a test MAIN:
18:02:00 Press knob
2 Select Test Duration TIME: <5 Sec>
18:02:05 Turn knob to
desired time
3 Confirm Test
Duration TIME: <10 Sec>
18:02:07 Press knob
4 Select Test Voltage VLTG: <10 KV>
18:02:10 Turn knob to desired
voltage
5 Confirm Test Voltage VLTG: <60 KV>
18:02:15 Press knob
6 Select Flash-Over
Threshold Thres: <100 uA>
18:02:17 Turn knob to desired
threshold
7 Confirm Threshold Thres: <300 uA>
18:02:20 Press knob
8 Confirm Test setting “PRESS” IF OKAY
60KV 10Sec 300uA Press knob
9 Start Test Now PRESS RED SWITCH
TO START TEST Press and hold RED
Switch
10 Test in progress 60.0KV 0.20uA
Time: 00.04 Press and hold RED
Switch
11 Observe PASS/FAIL 60KV 10Sec 300uA
>>PASS<< Release “RED” switch
12 Return to Main Menu 60KV 10Sec 300uA
>>PASS<< Press knob