COMMISSIONING
REV6 /REV7 OI 248 (EN) 51
7.6 Functional Testing
7.6.1 Test Operations
• Carry out five closing and five opening operations by remote
control.
7.6.2 Measuring the Running Time of the Charging Motor
After each closing operation, the charging motor automatically
recharges the closing spring.
• Carry out a closing operation and measure the running time of the
charging motor.
• Compare the running time with the reference values in the routine
test certificate and enter it in the checklist.
Operations at gas pressures below UW2 can result in
mechanical damage to the circuit breaker.
Therefore:
- Never operate the circuit breaker at gas pressures below
UW2 (red area on the density monitor indicator).
The pressurized components of the pole columns can be
damaged by improper handling. Such damage can cause the
pole columns to burst as the result of breaker vibrations. This
can result in serious personal injury or property damage.
Therefore:
- Always carry out test operations from a protected posi-
tion.
Long-lasting applied voltage may damage the shunt release
coils.
Therefore:
- Connect coils only by way of the terminals provided.
- Apply voltage to the coils for no longer than three
seconds.
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