0HK.412.530SM
LW36A-126/145
High Voltage SF6 AC Circuit Breaker
23/30
6. Use and maintenance
6
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1 Routine maintenance and inspection in operating
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1
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1 Eyeballing inspect the porcelain whether have crack in operating.
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1
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2 Observe the gas charge pressure of circuit breaker and register it.
6
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1
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3 Observe the switch on indication and switch off indication of the control box and the regulating
lever position of regulating lever box, to make sure whether the state of circuit breaker is normal.
6
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1
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4 Observe the corrosiveness of fastener and frame, register it.
6
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1
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5 Periodical inspect whether the heater is normal.
6
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1
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6 Observe whether have strike fire phenomenon of primary wire connection.
6
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2 Circuit breaker maintenance
SF6 circuit breaker go by the name of non repair circuit breaker, but maintain per 3 years to ensure
operate in good state. The maintaining should cut power several hours. The maintaining mainly include
as follows:
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2
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1 Inspect the porcelain surface and clean it.
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2
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2 Inspect the erode status, repair lacquer if eroded; If the fastener rusted, replace it.
Warning: the fastener should be replaced one by one, because the pole is a airtight pressure
container, it will cause injure person or broken equipment if replace in the same time.
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2
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3 Inspect the fastener whether become flexible, if yes, fix it.
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2
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4 Inspect the primary connection terminal plate whether changed color, if yes, shine the contact
surface and fix it.
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2
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5 Lubricate to the moving parts of mechanism.
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2
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6 Measuring the moisture content and register it.
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2
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7 Measuring the resistance of main loop and register it.
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2
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8 Inspect the secondary wire connection whether locked in, whether can carry out the electric
injunction reliably.
6
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3 Heavy repair of circuit breaker
The heavy repair mainly is disassembly the arc chamber and repair it. When repairing it, user can invite
manufacturer send professional person to guide.
The circuit breaker need heavy repair in follows’ circumstances
：
j
j
e
e
m
m
y
y
_
_
l
l
e
e
e
e
@
@
h
h
o
o
t
t
m
m
a
a
i
i
l
l
.
.
c
c
o
o
m
m
