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UniGear Digital
Commissioning and testing manual
Figure 57: Single Line Diagram, The Circuit Breaker Is Open And In The Test Position; Figure 58: Single Line Diagram, The Circuit Breaker Is In The Intermediate Position - ABB UniGear Digital Commissioning And Testing Manual
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Engineering manual
(112 pages)
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PA N E L I NT ER N A L I NT ER LO C KI NG
Step 2/7
Check the impossibility of inserting the circuit breaker into service when it is closed.
Step 3/7
Open the circuit breaker. Check the circuit breaker status on the protection relay LHMI.
Figure 57: Single line diagram, the circuit breaker is open and in the test position
Step 4/7
Move the circuit breaker truck out of the test position about a half turn of the crank. Check
the circuit breaker truck status on the protection relay LHMI.
Figure 58: Single line diagram, the circuit breaker is in the intermediate position
Step 5/7
Check that the interlock prevents the circuit breaker contacts closing if the truck is posi-
tioned between the service and test position.
40
AP PAR ATU S CO NTR O L T E S TI NG
1 VLG 5000 17 C
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