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P805-0011 Rev. A
©
2002 Hubbell Power Systems, Inc., 210 North Allen Street, Centralia, MO 65240 U.S.A.
Maintenance
General
Prolong the life of the BP3 By-Pass switch
with a periodic inspection and maintenance
program. Although the switch is designed for
long-term exposure in all weather condi-
tions, certain environments may reduce its
life without periodic maintenance. Following
these minimum inspection and maintenance
procedures will help ensure long service life.
!
DANGER
Hazardous voltage.
Contact with energized lines will result in death, personal injury or
property damage.
All maintenance work should be performed on de-energized switches. If
work must be performed on live lines, follow your company’s standard
safe operating procedures.
Hazardous voltage.
Can cause death, severe personal injury.
Contact with the switch bases, hardware or crossarm could result in
electrical shock. Ground the switch bases and mounting hardware prior
to maintenance.
!
WARNING
Note: It is recommended that all switches
go through a maintenance check at least
once a year; more frequently if located in
a contaminated area.
For additional recommendations, refer to
ANSI C37.35 “IEEE Guide for the Applica-
tion, Installation, Operation, And Mainte-
nance of High Voltage Air Disconnect and
Load Interrupter Switches."
Switch
Operate the switch periodically to clean con-
tact surfaces to keep parts moving freely.
• Check for burned or pitted contacts and
replace if necessary. Lubricate if neces-
sary with Optimol
®
grease C600-2870
• Check the hinge bolts for looseness. If
loose, clean bolt threads, apply Loctite
®
-
271 and torque to 40-in-lb.
• Inspect all blade rivets for tightness and
replace blade assembly if loose.
• Inspect the mounting hardware and
tighten according to specifications located
in the Installation Section of the manual.
• Replace any damaged or tracked insula-
tors. Clean or replace if heavily contami-
nated. Consult your factory representative
for authorized replacement insulators.
Conductors
• Be sure all conductors are routed so they
do not interfere with switch operation
• Inspect all conductors to be sure termina-
tions are tight and corrosion free
• If necessary, clean and apply contact
sealing paste (A.B. Chance Z.L.N. or
equivalent) and retighten terminations.
