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Check whether the system voltage has been manually set to a very low value. If so, check with other maintenance personnel whether the voltage can be changed to a normal value. Check whether faulty rectifiers have resulted in insufficient power system capacity for the loads. If so, replace the...
Check whether the system voltage has been manually set to a very high value. If so, check with other maintenance personnel whether the voltage can be changed to a normal value. Remove the rectifiers one by one and check whether the alarm is cleared. If the alarm still exists, reinstall the...
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Possible Causes The load circuit breaker has tripped or the load fuse has blown. The load circuit breaker or the fuse detection cable is disconnected. Measures Check whether the load circuit breaker has tripped or the load fuse has blown. If so, locate and rectify the circuit fault, and then...
Possible Causes The load circuit breaker has tripped or the load fuse has blown. The load circuit breaker or the fuse detection cable is disconnected. Measures Check whether the load circuit breaker has tripped or the load fuse has blown. If so, locate and rectify the circuit fault, and then...
The power system voltage has been manually set to a very high value. Rectifiers are faulty. Measures Check whether the DC overvoltage alarm threshold (58 V DC by default) is correctly set. If not, set the threshold to the correct value. Check whether the system voltage has been manually ...
Possible Causes The battery circuit breaker or fuse detection cable is loosely connected. The battery circuit breaker has tripped or the battery fuse has blown. The contactor is faulty. Measures Check whether the battery circuit breaker or fuse detection cable is loosely connected. If so, reconnect...
Loosen the screw that secures the upper port of the circuit breaker using a Phillips screwdriver, and remove the output power cable and signal cable terminals. Wrap the cable and terminals using insulation tape. Loosen the screw that secures the lower port of the circuit breaker using a Philli...
TP48200A-HX09A3, TP48200A-HX09A4, TBC300A-DCA3, TBC300A-DCA5 and TBC300A-TCA2 Telecom Power User Manual This document describes the DC power systems in terms of their features, configurations, components, and maintenance methods. About This Document Safety Precautions Overview Components ...