WEG VBWC Series, Инструкция по установке, эксплуатации и обслуживанию

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22 | Vacuum Circuit Breaker
10.3 PERIODIC INSPECTION
Check Item Check list Method Solução
Operation and
Equipment parts
Check abnormal assembling
parts
Verify a smooth
operation by
visual or manual
Clean and grease
Replace if necessary
Every
periodic
inspection,
Every 5000
operations
Check parts to be lubricated
Check dust and foreign
material
Check whether C-Rings,
spring pins and divider
pins are wrinkled or missed
C
on
tr
ol
ci
rc
uit
Wiring
Poor connection and/or
damaged wires
Visual
Retighten any loose
parts
Replace if necessary
Every
periodic
inspection
Closing,
tripping
device
Check component of
Movable parts.
Check a discoloration of coil
Aux. Switch Check links and contacts
Check Item Check list Method Solução Frequency
Main circuit
terminals
Check all connections
Visual
Check the torque,
Replace if
necessary
Every periodic
inspection
Check the corrosion, inspection
discoloration
V.I
Vacuum
Interrupter
Check the vacuum density
Vacuum Interrupter
Testing method.
Check
the withstand test
Replace V.I.
if necessary
Every periodic
inspection,
Every 5000
operations
Aux.
Device
Switching
Indicator
Check the normal operation Visual
Check fixed bolts.
Replace if
necessary
Dielectric Insulations
Main circuit: Over 500MΩ 1000 V Megger
Clean it after
finding the cause.
Replace if necessary
Every a periodic
inspection
Control circuit: Over 2MΩ 500 V Megger
Withstand voltage test
Main circuit: 1.5 x R.Voltage
for 10 min.
Test and check
with a withstand
voltage tester
Clean and replace
if necessary
Every periodic
inspection, every
5000 operations
Operating
Characteristics
test
Testing for trip/close
Testing for trip-free
Check the minimum of
operating voltage
Perform the
electrical testing
after a manual
operation test
Inspect and repair
if finding a matter.
Replace if
necessary.
Every periodic
inspection,
Every 6 years
Check Item Check list Method Solução Frequency
Contact
part
Check the sectional traces of
heat or discoloration.
Check the damage of arc.
Check the condition of applied grease on the
contactor surface.
Visual
(Use a microscope
if necessary)
Replace.
Apply grease on
contact surface.
*Specification:
HITALUBE280G
Every periodic
inspection,
Annually
Check the sectional traces of
heat or discoloration.
Check the damage of arc.
Check transformation or
mechanical crack of a coil.
Visual
(Use a microscope
if necessary)
Replace.
Every periodic
inspection,
Annually
VCB
Check the sectional traces of
heat or discoloration. Check
the damage of arc. Check the
amount of eccentricity
between terminals.
Visual
(Use a microscope
if necessary)
Tightening force
Replace.
Apply grease on
contact part
*Specification:
HITALUBE280G
Every periodic
inspection,
Annually