Figure 47: Test Setup For Voltage Sensors Installed On Busbars - ABB UniGear Digital Commissioning And Testing Manual

VO LTAG E SE NS O R S
Step 4/8
Make sure there is no voltage on the busbar.
Open the top shutter in the circuit breaker compartment.
Step 5/8
Except the tested phase, connect all other phases together to the grounding bar.
Step 6/8
Connect the tester to the isolated (measured) phase and grounding bar.

Figure 47: Test setup for voltage sensors installed on busbars

Step 7/8
Inject voltage higher than 1% of the primary (nominal) value.
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PR IM AR Y T EST IN G
1 VLG 5000 17 C