Chapter 7 Maintenance 51
NetSure 801 AG1 Power Supply System User Manual
Emergency treatment of DC distribution
Partial short-circuit of load
Disconnect the branch fuse that corresponds to the damaged loads. Replace the faulty fuse. If the fuse link is
replaced for other reasons, it must make clear whether the load circuit where the fuse link is located permits power
disconnection.
Power failure
AC power failure is the general case in the operation of power supply system. If the continuous time is not long, the
batteries are feed to DC. However, if the power failure is not clear or the continuous time is too long, restart the
generator to power. And then transfer to feed the power supply system after 5min in order to reduce the effects to the
power supply equipments during the process from starting to transition for generator.
Disastrous accidents
Disastrous accidents refer to communication equipment faults arising from disasters such as lightning strike, flood,
earthquake and fire. For those disasters that may severely affect the safety of communications, emphasis shall be
mainly laid on pervention. Meanwhile, communication exchanges shall have adequate human and material resources
and work out effective countermeasures to deal with these disasters. They shall also prepare emergency
management regulations and grave accidents rush-repair rules.
