Instruction Book
Effective: March 2007
Page 35
IB6513C80G
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6-3 INSPECTION AND MAINTENANCE PROCEDURES
No./Section
Inspection Item
Criteria
Inspection Method
Corrective Action if Necessary
1. Insulation
Insulation
Integrity
Stand off insulators, oper-
ating rods, tie-bars and
barriers
Main Circuit to Ground
Between Main Circuit
Terminals.
Control Circuit to Ground.
No dirt
No cracking
Withstand 27 kV, 60 Hz
for 1 minute.
Withstand
15 kV, 60 Hz for 1 minute.
(5kV Ratings)
27kV, 60 Hz for 1 minute.
(15kV Ratings)
Withstand 1125 V, 60 Hz
for 1 minute.
Visual check
Visual check
Hipot Tester
Hipot Tester
Hipot Tester
Clean with lint-free cloth.
Replace cracked unit
Clean and retest or replace.
Clean and retest or replace.
Clean and retest or replace.
2. Power
Elements
Vacuum Interrupters
Primary Disconnects
Contact Erosion visibility
of mark.
VI fixed/moving stem bolts
Contact wipe visible.
Adequate Vacuum
Dirt on ceramic body.
No burning or damage
Visual-Close the breaker and
look for green mark on mov-
ing stem from the rear of the
breaker (see Fig. 6.2 & 6.3).
Visual check for tightness
Visual (Fig. 6.4 and 6.5)
See Section 6.4
Visual check
Visual check
If mark is not visible, replace
interrupter assembly.
Tighten if necessary
Replace VI assembly.
Replace interrupter assembly if
vacuum is not adequate.
Clean with dry lint-free cloth.
Replace if burned, damaged or
eroded.
3. Control
Circuit
Parts
Closing and tripping devices
including disconnects.
Wiring
Terminals
Motor
Tightness of hardware.
Smooth and correct operation
by control power.
Securely tied in proper place.
Tight
At-5000 Operations
No loose or missing parts.
Test closing and tripping of
the breaker twice.
Visual check
Visual check
Check Counter
Visual and tightening with
appropriate tools.
Replace any defective device-
Identify per troubleshooting chart.
Repair or tie as necessary
Tighten or replace if necessary.
Replace brushes.
Tighten or reinstate if necessary.
4. Operating
Mechanism
Dust or foreign matter.
Lubrication
Deformation or excessive
wear.
Manual operation.
CloSure test
No dust or foreign matter.
Smooth operation and no
excessive wear.
No excessive deformation
or wear.
Smooth operation.
> 0.6 inch over travel
Visual check
Sight and feel.
Visual and operational.
Manual charging closing and
tripping.
CloSure test 6-9.1
Clean as necessary.
Lubricate very sparingly with
mineral oil.
Remove cause and replace parts.
Correct per trouble-shooting chart
if necessary.
If < O.6 contact P.I.C. at 412-787-6518
Bolt Size
8-32
10-32
.25-20
.31-18
.38-16
.50-13
Torque Lb. In.
24
36
72
144
300
540