6KV 厂用工作母线失压的处置方案

6KV 厂用工作母线失压的处置方案
Voltage loss of the 6 KV station service operating bus
厂用6KV工作母线失压
Phenomena现象
a) The audio alarm is generated, and the system carries surge current;
a) 音响报警，系统有冲击。

b) The switch of operating source for fault section trips and its green
indication lamp flashes;
b) 故障段工作电源开关跳闸，发绿色闪光。

c) The switch of standby source for fault section trips after it is ganged and
its green indication lamp flashes;
c) 故障段备用电源开关联动投入后又跳闸，发绿色闪光。

d) The voltage of the fault section is zero and corresponding protection is operated.d) 故障段电压为零，相应的保护动作。

Handling 处理a) Reset the audio system;
a) 复归音响。

b) Remove the station power quick-changeover unit;
b) 退出厂用电快切装置。

c) Check the operating conditions of protection;
c) 检查保护动作情况。

d) Recover the power supply of 400V bus with voltage loss due to failure of
the 6 KV bus as soon as possible, and pay attention to checking the
operating conditions of security section;
d) 尽快恢复因6KV母线故障引起的400V失压母线送电，特别应检查保安段
运行情况。

e) If this bus section has an obvious fault, remove it from standby operation,
notify the maintenance personnel for handling, measure the qualification of
insulation and then recover the power supply;
e) 如该段母线有明显故障，应将其解除备用，通知检修处理好以后，测绝缘
合格，恢复送电。

f) Open all load switches for this bus section if there is no obvious fault
phenomenon and charge the bus after it is normal through measurement of
the bus insulation; after that, measure the insulating condition of each load
branch bus and supply the power for the qualified ones; if there is any
problem, notify to relevant personnel for handling;
f) 如母线上无明显故障现象，将该段所有负荷开关断开，测量母线绝缘正常
后对母线充电，正常后，对每一负荷支路测绝缘，合格者送电，发现问题，通
知有关人员处理。

h) Switch the 400V station service system to the normal position after the 6
KV bus is recovered.
h) 6KV母线恢复正常后，将400V厂用系统倒为正常方式。