Vanguard VBT-60_80 - Manual (Page 15)

VBT-60/80 Operating Procedures
15
5.0 CABLE CONNECTION
The VBT is supplied with one 10-foot “High Voltage” cable and one 10-foot voltage-return
cable. Both cables are terminated with alligator clamps to connect to the vacuum bottle being
tested. A typical cable connection for the VBT to a Vacuum bottle under test is shown in Figure
5 and Figure 6. To protect the VBT against static discharge in the substation, always connect the
unit’s ground stud to the substation ground.
Note:
1. The circuit breaker must be off line and completely isolated. The vacuum bottle under test
should be in the open position.
Figure 5. VBT-60 Connection Diagram 1
Figure 6. VBT-80 Connection Diagram 2