I.B. 8295A61H03
Page 36
Effective 7/97
7-3 INSPECTION AND MAINTENANCE PROCEDURES
No./Section Inspection Item
Criteria
Inspection Method
Corrective Action
1. Insulation
Drive Insulator
No dirt
Visual Check
Clean with lint-free cloth.
and
Molded Pole Unit Support
No cracking
Visual Check
Replace cracked unit
Insulation
Main Circuit to Ground
Withstand
Hipot Tester
Clean and retest or replace
Integrity
Between Main Circuit
Withstand
Hipot Tester
Clean and retest or replace
Terminals.
Controls Circuit to Ground
Withstand
Hipot Tester
Clean and retest or replace
2. Power
Vacuum Interrupters
Visibility of
Visual-Close the breaker
If mark is not visible, replace
Elements
Contact Erosion
and look for green mark on
pole unit assembly.
Mark
moving stem from the rear
of the breaker
(see Figure
7-2
and 7-3).
Contact wipe visible
Visual
(Figures 7-4 and 7-5)
Replace pole unit assembly
Adequate Vacuum
See
Section 7-4
Replace pole unit assembly
Dirt on ceramic body
Visual Check
Clean with dry lint-free cloth.
3. Control
Closing and Tripping Device
Smooth and correct
Test closing and tripping of
Replace any defective
Circuit
Including Disconnects
operation by control
the breaker twice
device, Identify per trouble-
Parts
power
shooting chart
Wiring
Securely tied in
Visual Check
Repair or tie as necessary
proper place
Terminals
Tight
Visual Check
Tighten or replace if necessary
Motor
Smooth, Normal
Functional Test
Replace brushes or motor
Operation
Tightness of Hardware
No loose or
Visual and tighten with
Tighten or reinstate if
missing parts
appropriate tools
necessary
4. Operating
Dust or Foreign Matter
No dust or foreign
Visual Check
Clean as necessary
Mechanism
matter
Lubrication
Smooth operation
Sight and feel
Lubricate very sparingly with
and no excessive
light machine oil
wear
Deformation or Excessive
No excessive
Visual and operational
Remove cause and replace
Wear
deformation or wear
parts
Manual Operation
Smooth operation
Manual charging, closing
Correct per trouble-shooting
and tripping
chart if necessary
Содержание 150 VCP-WR 1500
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