Check on Short-circuit Protection Plug-in Unit of ...
1.Equipment Needed
None.
2.Procedure
Note:No device is allowed to be removed when engines are in operation on the ground.
(1)Right Power System.
·Connect both generators with the power network.Indicators“GEN.1”,“GEN.2”and“BUS.CPL”will not light up.
·Disconnect circuit breaker C17 on 4α panel.
·Switch off Generator 2 and indicator“GEN.2”lights up.
·Reconnect circuit breaker C17.
·Put switch“GEN.2”at“RST”position.
·Check if the generator has been connected to the power network.Indicator“GEN.2”goes out.
(2)Left Power System.
·Conduct the same test as that on right power system.In this case,the circuit breaker to be operated is B17 on 4α panel.
Note:If the tests above are successfully completed,short-circuit protection plug-in units 40P and 41P can be seen as working normally.