Maintenance And Inspection; General Caution; Routine Inspection - WEG VBWC Serie Instrucciones De Instalación

10 MAINTENANCE AND INSPECTION

10.1 GENERAL CAUTION

DANGER!
Do not touch the electrically charged parts (Conductor and Terminal conducting parts) under energized conditions.
Otherwise, it may result in severe physical injury or even death by electric shock.
WARNING!
1. Inspection and maintenance have to be performed by a qualified electrician.
Otherwise, there is the danger of malfunction, severe physical injury or electric shock.
2. When the circuit breaker is in service, don't open the front cover.
Otherwise, there is the danger of severe physical injury or electric shock.
3. When the circuit breaker is in service, don't insert or withdraw the circuit breaker.
Otherwise, there is the danger of severe physical injury or electric shock.
4. Inspection and maintenance have to be performed only after shutting off the electric power and
discharging a charge current.
Otherwise, there is the danger of severe physical injury or electric shock.
5. Please tighten the bolts and screw with specified torque.
Otherwise, there is the danger of over-heat or fire.
6. After performing installation, maintenance or inspection, remove some foreign objects like tools, wires
or bolts.
Otherwise, there is the danger of short circuit or fire.
7. When performing a maintenance, make sure if VCB is tripped and it is maintained intest position.
Otherwise, there is the danger of electric shock.
8. Do not move a circuit breaker by holding main circuit terminals.
Otherwise, there is the danger of an electric accidents by temperature rise.
CAUTION!
1. Do not alter the control circuit at one's discretion.
Otherwise, may cause of malfunction or damage to products.
Check Item
Usual inspection
Periodic inspection
Special inspection

10.2 ROUTINE INSPECTION

Make an inspection for the contactor on service between the periodic inspection.
Be careful for not getting in touch with any energized parts when opening the door of switchgear.
Check Item
Switching indicator Verifying a normal operation
Control circuit Verifying a connection of connectors
Operating counter Verifying a time of operation
Others Verifying abnormal noise,smell
Note: The indicated numbers on operating counter is obtained from the ON-OFF operation performed during manufacturing and quality
inspection process.
Normal condition
6 months
1~2 years after an installation.
Once 3 years after that
If necessary
Table 10.1: Period of maintenance and inspection.
Check list Method
Visual
Visual
Visual
Visual
Table 10.2: Items for routine inspection.
Maintenance and inspection interval
Investigating the cause and repair
Investigating the cause and repair
Check the contactor if exceeding 10,000 operations
After disconnecting the main power, investigating and repair
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Abnormal condition
(dusty and wet places)
1 month
A periodic inspection
If necessary
Solution
Vacuum Circuit Breaker | 21