Inspection And Maintenance Procedures - Eaton VCP-W Series Instructions For Installation/Operation/Maintenance/Servicing

Instruction Booklet IB131006EN
Effective March 2019

6.3 Inspection and maintenance procedures

No./section Inspection item
1.Insulation Drive insulator, barriers,
and
stand-off insulators
Insulation integrity Main circuit to ground
Between main circuit terminals
Control circuit to ground
2. Power elements Vacuum interrupters
Primary disconnects
Pole unit X-washers
for 150 VCP-W 63
3. Control circuit parts Closing and tripping device
including disconnects
Wiring
Terminals
Motor
4. Operating mechanism Tightness of hardware
Dust or foreign matter
Lubrication
Deformation or excessive wear
Manual ooperation
CloSure test
50
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Criteria Inspection method
No dirt Visual check
and
No cracking Visual check
Withstand Hipot tester
Withstand Hipot tester
Withstand Hipot tester
Visibility of contact Visual - Close the circuit breaker
erosion marks and observe if all black, blue
or machined groove marks on
moving stems are visible
Contact wipe indicator visible Refer to paragraph 6.5
Adequate vacuum Proceed with integrity check as
described in Paragraph 6.4
Dirt on ceramic body Visual check
No burning or damage Visual check
Every 1000 operations Operation counter
Smooth and correct operation Test closing and tripping of the
by control power circuit breaker twice
Securely tied in proper place Visual check
Tight Visual check
Smooth, normal operation Functional test
No loose or missing parts Visual and by feel
No dust or foreign matter Visual check
Smooth operation and no Sight, feel and per maintenance
excessive wear schedule
No excessive deformation or Visual and operational
wear
Smooth operation Manual charging, closing and
tripping
0.6 inch over-travel CloSure Test (6.9.1)
Instructions for installation,
operation, and maintenance of type
VCP-W vacuum circuit breakers
Corrective action
Clean with lint-free cloth
or
replace cracked piece.
Clean and retest or replace .
Clean and retest or replace.
Clean and retest or replace.
If a mark is not visible, then check if the
pole unit plastic bushing is intact on
the moving stem of the VI just below
the cup plate. If the bushing is intact,
then replace the interrupter assembly
and perform contact wipe check. If the
bushing is NOT intact, then glue back the
bushing to the cup plate and observe the
mark again.
Replace interrupter assembly.
If integrity check is not satisfactory,
replace interrupter assembly.
Clean with lint-free cloth.
Replace if burned, damaged or eroded.
Replace all X-washers per Figure 26.
Replace any defective device. Identify
per trouble-shooting chart .
Repair or tie as necessary.
Tighten or replace if necessary.
Replace brushes or motor.
Refer to Table 23 and tighten or reinstate
if necessary with appropriate tools.
Clean as necessary.
Refer to Figure 25 and paragraph 6.10
and lubricate very sparingly with light
mineral oil.
Remove cause and replace parts.
Correct per troubleshooting chart if
necessary.
If < 0.6, contact your local Eaton Sales
and Service Center.