INSTALLATION, OPERATION, &
MAINTENANCE MANUAL
for A.B. CHANCE COMPANY
UNITIZED OVERHEAD SWITCHGEAR
SERIAL NO.:
TYPE "D7" AND "S" SWITCHES
HORIZONTAL
VERTICAL
PHASE/PHASE
DELTA
!!
WARNING
The following instructions must be read and understood before using this equipment. Failure to read and follow this
information may result in serious injury or death.
!!
CAUTION
These Installation, Operation, and Maintenance Instructions contain Important Safety Information. Only qualified
and properly trained personnel should apply, operate and maintain this Switch. Read and follow complete
Installation, Operation, Adjustment, and Maintenance instructions throughly before placing in operation.
This Switch is a unitized, three-phase, side break air disconnect switch. The Duogap® interrupter, when supplied,
makes the Switch a loadbreak switch. Follow these instructions and the enclosed control drawing to install, operate
and maintain this Switch. The only area adjustable by the installation crew is the handle and lock segment.
Before beginning the installation procedure visually, inspect the switch for damage or missing parts. Compare your
switch with the enclosed control drawing. If damage from rough handling is evident, immediately file a claim with
the transportation company. Promptly contact the nearest Chance Sales Office for information regarding replacement parts.
TABLE OF CONTENTS
SECTION A ................................ SWITCH MOUNTING
SECTION B1 .............................. CONTROLS INSTALLATION (Swing Handle)
or
SECTION B2 .............................. CONTROLS INSTALLATION (Pump Handle)
SECTION C or D or E ................ FINAL SWITCH INSPECTION
SECTION F ................................. MAINTENANCE INSTRUCTIONS
{
(1) COPY OF CONTROL DRAWING
This drawing is supplied with every new switch along
with these instructions. It shows the orientation of the
switch and operating controls as they would be mounted
to the pole. Then use these instructions for details.
NOTE: These instructions are coded with the serial number of this switch.
It is recommended they be filed for future reference in case of repair or maintenance.
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be
met with concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular
problems are encountered which are not sufficiently covered in this guide, contact A.B. Chance Company.
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
®
®
POWER SYSTEMS, INC.
© Copyright 1993 Hubbell / Chance, 210 N. Allen, Centralia, MO 65240
Printed in USA
P816-0606
SECTION A. CHANCE UNITIZED SWITCHGEAR MOUNTING
Refer to the illustrations included with these instructions, and the control drawing furnished with the switch.
NOTICE
The user will supply all thru-bolts and lag screws.
Step 1.
switch off of crate base. See illustrations below for
appropriate style of switch. Attach a guide rope for
control.
Remove crate top, sides, and ends.
NOTE: Do not remove the ties that hold the switch
phases closed until later.
Step 2.
Attach a sling to the lift brackets that are clamped to
the crossarm or frame. A clevis is preferred to attach to
the bracket. Remove crate mounting straps and lift
!
WARNING
Do not lift by rigging to the "live parts." Contacts and
blades could bend, causing the blade to miss the
contact. A resulting arc could damage equipment and
injure operator.
Sling
Lift Bracket
(Note: Loop sling
around phase base if
bracket is not supplied.)
Sling
Lift Bracket
Lift Bracket
Guide Rope
Horizontal Configuration
Guide Rope
Phase/Phase Configuration
Lift Bracket if
Furnished or Pull
Off Eye on Base
Sling
Lift Bracket if
Furnished or Pull
Off Eye on Base
Sling
Lift Bracket
Guide Rope
Guide Rope
Vertical Configuration
Delta ("S" Switch only) Configuration
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be met
with concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular problems
are encountered which are not sufficiently covered in this guide, contact A. B. Chance Company.
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
© Copyright 1997 Hubbell / Chance, 210 N. Allen, Centralia, MO 65240
Printed in USA
®
®
Page 1 of 2
POWER SYSTEMS, INC.
Bulletin 14-9305
P816-0647 Rev. A
SECTION A. CHANCE UNITIZED SWITCHGEAR MOUNTING
NOTE:
Following steps refer to standard thru bolt pole mounting. For special mountings such as pole
bands, square poles, etc., please refer to the special control drawing supplied with your switch.
Step 3.
Step 4-A.
Drill two 11⁄16" dia. holes on centerline of pole for mounting of gang switch. Locate and drill according to dimensions shown on the control drawing.
FOR DELTA AND VERTICAL PHASE/PHASE INSTALLATIONS
Place thru bolts thru pole. Align mounting brackets
with thru bolts. Lower switch into slots and tighten
securely. Use 1⁄2" x 5" lag screws in side straps as
required.
NOTE: Check switch again for damaged or broken
parts.
Step 4.(HORIZONTAL) or (VERTICAL)
Style Switches
Using the top 11⁄16" dia. hole that was drilled in Step 3,
assemble a thru-bolt with washer behind the head
through the pole. Assemble a large curved pole washer
on the bolt and then screw a nut on. Draw bolt head and
washer up to approximately 1" from the pole. Lift
switch to desired level, then let switch down enough to
allow key hole slot in top of bracket to slide behind bolt
head and washer (as illustrated below). Tighten bolt
enough to pull bracket up to pole. Align bracket slot
with bottom thru hole, place washer under bolt head
and insert thru bracket and pole. Assemble curved
washer and nut/nuts and tighten all hardware securely. Check for position and level. Assemble the pole
bands as shown on the control drawing and tighten
securely.
NOTE: Crossarm braces should be installed at this
time as required. Drill thru hole on centerline of pole
for crossarm brace bracket as required, (see control
drawing for dimension).
Step 5.
Remove all lift brackets at this time.
!!
WARNING
Failure to remove the lifting angles and brackets will
greatly reduce the basic insulation level, resulting in
switch flashover.
Switch mounting should be complete at this time,
NOTE: Deadending and terminal connections may be
made at this time. NOTE: It is recommended that all
terminal connections be cleaned (wire brushed) and
Chance contact sealing paste, “ZLN”, be applied between conductor and terminal and between terminal
and terminal pad on switch.
Proceed to section "B" for control mounting.
Washer
Curved washer
Mounting
Bracket
Mounting
Bracket
Nut
Thru-Bolts
Thru-Bolt
J-Hook Bolt
Crossarm
Pole Band
Crossarm
Centerline of pole
END/SIDE VIEW
FRONT VIEW
Page 2 of 2
Bulletin 14-9305
P816-0647 Rev. A
SECTION B1 - CONTROLS MOUNTING (Swing Handle)
Step 2.
NOTE:
Swing bottom/free end of section to centerline of
pole, mark and drill 11/16" dia. thru hole 6 inches
below end of section. NOTE: Some controls may
require guides at closer intervals. Be sure to follow
guidelines as shown on control drawing.
For safe and proper operation of the switch it is
required the controls be free of interference from
other lines and underbuild.
Step 1.
See illustrations below or refer to control drawing
for proper mounting of guides that were supplied
with your switch.
Connect vertical steel or insulated section to the
controlling bracket or phase as shown below or on
control drawing with hardware provided. (NOTE:
Follow your utility's requirements if different
from that shown on drawing).
DETAIL "A"
Adjustable Guide
Assembly
(Optional)
Step 1
Use
PP001-1912
clevis pin &
P055902
cotter pin
here for
univ.
installation.
Universal
Vertical
Section
(Steel or Epoxiglas)
Centerline
of
pole
Centerline
of pole
3 in/76 mm
Approx (typical)
6 in/152 mm
Approx (typical)
This dimension
should be
approximately 3"
below the
universal joint or
coupling.
ThruBolt
3" Approx.
Approx.
6"
Step 2
Curved
washer
Nut
Thru-Bolt
Use
PP001-1907
spline bolt &
PP001-1570 lock
nut here for univ.
to vertical control
pipe connection.
Step 2
Lag Screws
See Detail "A"
DETAIL "A"
Typical mounting for Torsional Type Guide Plates
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be met
concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular problems
are encountered which are not sufficiently covered in this guide, contact A. B. Chance Company.
®
®
POWER SYSTEMS, INC.
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the
right to change design and specifications without notice.
©1997
Hubbell/Chance, 210 N. Allen St., Centralia, MO 65240 USA
Printed in USA
P816-0648 Rev. A 7/97
SECTION B1 - CONTROLS MOUNTING (Swing Handle)
Step 3.
Top
Universal Section
Slide first section of vertical pipe up thru first guide
bracket and bolt/clamp to top section with hardware
provided. See control drawing.
Step 3
Step 4.
3" Approx.
Follow above procedures for additional sections as
required or as shown on control drawing until you are
ready to cut and install the section for handle and
lock segment assembly.
Pipe Guide
NOTE:
Control Pipe
This dim./height may vary with each utility.
Pipe Coupling
See Detail "B" or "C"
NOTE:
Tapered or small end of
insulator must be on top
side as shown.
Typical mounting location for vertical
insulator (porcelain or polymer).
Top
Bottom
(Base)
Fiberglass Vertical Insulation
Section shown here (Optional).
VERTICAL
INSULATOR
(optional)
3" Approx.
Handle
Ass'y
See
Page 3
Lock
Segment
Ass'y
Step 5
Grd. Strap (Step 7)
Swing Away
Locking Hasp
Approx. 1 ft.
Step 6
Handle
Height
Determined
by Customer
(See Note
under Step 4)
Use
PP001-1907
Spline Bolt &
PP001-1570
locknut here to
connect vertical
control pipe and
coupling
Centerline
of
pole
Control pipe
Control
Pipe
Pipe
Coupling
3"
Approx.
3"
Approx.
Pipe
Guide
Control
pipe
TYPICAL TORSIONAL CONTROL
(SEE CONTROL DWG. FOR SPACING)
P816-0648 Rev. A
Piercing
Coupling
(Optional)
TYPICAL STANDARD TORSIONAL
CONTROL PIPE COUPLING
DETAIL "B"
Pipe
Guide
Control Pipe
TYPICAL PIERCING
COUPLING
APPLICATION
WHEN SUPPLIED
(optional)
DETAIL "C"
Page 2 of 4
SECTION B1 - CONTROLS MOUNTING (Swing Handle)
!!
WARNING
Failure to properly adjust handle may lead to switch failure.
Step 5.
Step 9.
Drill (2) 11/16" holes thru centerline of pole to mount
lock segment bracket, see control drawing for dimensions.
Loosen handle assembly clamp and slide down to
1⁄2" above lock segment, and place handle in closed
side of lock segment. Tighten slightly at this time.
See page 4 for final adjustment.
NOTE:
Height of these holes may vary due to utilities
requirements.
Step 6.
(Torsional Control Only) Measure from bottom of
last installed pipe to 1 ft. (12 inches) past the (2)
holes drilled in step 5. Cut pipe to this dimension
and treat fresh cut end with Galvicon, or zinc rich
paint. Assemble this piece of pipe to the coupling
above. Use hardware supplied with switch.
Step 10.
Fasten loose end of ground strap assembly to lock
segment plate to (1) hole in plate. Install suitable
earth ground wire in P.G. (Parallel Groove) clamp
and tighten bolt securely.
NOTICE: THE GROUNDING RECOMMENDATIONS MADE
MAY DIFFER FROM THE STANDARD OPERATING AND
SAFETY PROCEDURES OF CERTAIN ELECTRIC UTILITY
COMPANIES. WHERE DIFFERENCES EXIST, THE OPERATING PROCEDURES OF THE ELECTRIC UTILITY APPLY.
Step 7.
Slide ground strap up this section approx. 2 ft. (24
inches). Slide swing handle assembly up this section
of pipe approx. 18 inches and clamp enough to keep
from sliding off.
Step 8.
Slide lock segment up pipe below handle
assembly and fasten to pole with (2) 5/8"
thru-bolts. Use holes that were drilled in
Step 5. Use curved washer on opposite side
from lock segment. Fasten securely.
Lag
Screws
6"
(Fixed Dim.)
NON-ADJUSTABLE
LOCK SEGMENT BRACKET
(STANDARD)
Page 3 of 4
Ground Strap
Step 10
11/16 Holes
5/8 thru bolts
Steps 5 and 8
(See Note)
TYPICAL LOCK SEGMENT MOUNTING
Adjustable
Dim.)
ADJUSTABLE
LOCK SEGMENT BRACKET
(OPTIONAL)
P816-0648 Rev. A
SECTION B1 - CONTROLS MOUNTING (Swing Handle)
WARNING
!!
Resistance in the form of wrap up in swing handle controls must be maintained in the closed position in order to
assure proper closing of the switch and to prevent creepage or accidental opening. See detail "A" for proper final
adjustment. Failure to do so could result in switch damage.
Step 12.
Step 11.
Remove all wire ties that are holding blades closed, if
you have not done so already.
Tighten handle clevis bolt. (Do not pierce yet).
Open and close switch several times. Inspect entire
installation.
Step 13.
!!
Final adjustment for swing handle controls. (See
detail "A" below).
WARNING
Failure to do so will result in damaging the switch.
Step 14.
Tighten all hardware to 25-28 ft.-lb. torque. Pierce
set screws where applicable.
Piercing Set Screw
Handle Clamp Bolt
Lock Segment Assy.
Handle Slot
in Lock Segment
Handle slots
(Typical both open
and closed sides)
Locking Hasp
Locking Hasp
Carriage Bolts
Second Step
Loosen carriage
bolts in lock
segment assy. and
move handle slot
approx. 10°-15°
past centerline of
handle.
NOTE: This will
provide torsional
wrap-up in closed
position.
First Step
With all switch
phases fully closed
against stops, set
operating handle
approx. 60°-65°.
Tighten handle
clamp bolt securely.
Do not set piercing
set screws yet.
Handle shown in
locking position for
counterclockwise
opening switch. For
clockwise, reverse
handle position.
Third Step
Open switch
completely until
rotating insulator
levers are against
stops. Total
rotation from close
to open should be
approx. 120°-130°.
Approx. 1/2"
clearance above
locking plate
Grounding Bar
Fourth Step
Move handle slot in
lock segment to
approx. 10°-15°
past centerline of
handle.
NOTE: This will
provide torsional
wrap-up in open
position.
Fifth Step
Recheck all positions as mentioned
above and tighten
all hardware. If all
settings are
complete as
recommended,
pierce set screws in
handle casting.
DETAIL "A" (TORSIONAL CONTROLS)
P816-0648 Rev. A
Page 4 of 4
SECTION B2 - CONTROLS MOUNTING (Pump Handle)
NOTE: For safe and proper operation of the switch it is
required the controls be free of interference from other lines
and underbuild.
Step 1.
Connect vertical steel/insulated section to the
controlling bracket or phase as shown on control
drawing with hardware provided. (NOTE: Follow
your utility's requirements if different from that
shown on drawing). See Detail "A-1".
Step 2. (Guide Placement)
For 11⁄4" control pipe with steady lever.
A. Attach steady lever to loose end of top section,
swing to centerline of pole, set at 45° and mark pole
where bracket holes are located. See detail B.
B. Swing aside and drill (2) 11⁄16" dia. holes for thru
bolts. See detail B.
CL
SWITCH BASE OF CONTROLLING PHASE
HORIZONTAL
INTERPHASE
ON VERTICAL
MOUNTED
SWITCH
VERTICAL
INTERPHASE
ON PHASE
OVER PHASE
STYLE
SWITCH
FIBERGLASS
"A-1"
Using slots
in lever,
provide
clearance
for vertical
operating
shaft if
angle of
control
requires it.
PIN &
COTTER PIN
TOP
VERTICAL
CONTROL
SECTION
FIBERGLASS
OR STEEL
6"
PIN &
COTTER PIN
FIBERGLASS
OR STEEL
TOP
VERTICAL
CONTROL
SECTION
11⁄4" I.P.S. PIPE CONTROL
DETAIL "A-1"
TYP. TOP CONTROL SECTION
CONNECTIONS FOR 1-1/4" I.P.S. PIPE
6"
PAGE 3
STEADY
LEVER
GUIDE
6"
6"
6"
DETAIL "B"
TYP. STEADY LEVER GUIDE BRACKET WHEN
SUPPLIED
TYP. RECIPROCATING CONTROL WITH
1-1/4" I.P.S. PIPE
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be met
concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular problems are
encountered which are not sufficiently covered in this guide, contact A. B. Chance Company.
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
®
®
POWER SYSTEMS, INC.
©1999
Hubbell/Chance, 210 N. Allen St., Centralia, MO 65240 USA
Printed in USA
Page 1 of 5
P816-0653 Rev. A
SECTION B2 - CONTROLS MOUNTING (Pump Handle)
Step 3. (Guide Placement)
For 3⁄4" control pipe or 1" Fiberglass rod.
C. Measure, mark, and drill 11⁄16" dia. hole on
centerline of pole. See Detail "C".
A. Refer to control dwg. for dim. where top guide will
be placed.
D. Slide guide nut up from bottom of top section to
previously drilled hole, assemble thru bolt and
hardware but leave loose until later.
B. Fasten top control section to controlling bracket,
lever on back of controlling phase or directly to
end of interphase as shown in detail A2. See
control drawing.
BASE BRACKET
CL
TYP. RECIPROCATING CONTROL WITH
3/4" I.P.S. PIPE / 1" O.D. FIBERGLASS
TOP VERTICAL
SECTION
PIN &
COTTER
PIN
VERTICAL
INTERPHASE
ON PHASE
OVER PHASE
STYLE
SWITCH
HORIZONTAL
INTERPHASE
ON VERTICAL
MOUNTED
SWITCH
PIN &
COTTER
PIN
FIBERGLASS
EPOXY
OR STEEL
COUPLING
SEE DETAIL E
PAGE 3
TOP
VERTICAL
CONTROL
SECTION
FIBERGLASS OR STEEL
TOP
VERTICAL
CONTROL
SECTION
CONTROL PIPE
STEEL OR
EPOXIGLAS
DETAIL "A2"
TYP. 3⁄4" I.P.S. PIPE/1" O.D. FIBERGLASS
CONTROL CONNECTIONS
AS REQ'D
DETAIL "C"
TYP. EYE NUT TYPE GUIDES WHEN SUPPLIED
PIPE GUIDE
SEE DETAIL C
STEP 3
CENTERLINE
OF CONTROL
PIPE / ROD
AS REQ'D
GROUND
STRAP
CURVED
WASHER
CURVED
WASHER
RECIPROCATING
PUMP HANDLE
(SEE PAGE 5 FOR
FINAL ADJ.)
SEE STEP 6
PAGE 4
NUT
NUTS
AS REQ'D
SEE NOTE
PAGE 3
P816-0653 Rev. A
Page 2 of 5
EYE
NUT
SECTION B2 - CONTROLS MOUNTING (Pump Handle)
Step 4.
PIPE CLAMP
END FITTING
Follow above procedures for additional guides required or as shown on control drawing until desired
height is reached for handle mounting bracket.
11⁄4" I.P.S.
CONTROL
PIPE
NOTE:
This dim./height may vary with each utility.
PIN &
COTTER
PIN
NOTE:
APPROX. 45°
When eye nut guides are supplied, leave D.A. or thru
bolts loose until handle assembly is installed. Then
align all guides so as to form a straight line.
STEADY
LEVER
GUIDE
Step 5.
Connect each additional section of pipe/rod with
couplings that have been supplied with the switch
controls. See illustrations for typical coupling connections. Detail D or E.
CONTROL PIPE/ROD
PIPE CLAMP
END FITTING
DETAIL "D"
TYP. RECIPROCATING CONTROL COUPLING
FOR 1-1/4" I.P.S. PIPE
3⁄ " I.P.S. PIPE
4
1 DIA. EPOXY
ROD
14"
MIN.
8 BOLT
CLAMP
COUPLING
EYE NUT
GUIDE BKT.
DETAIL "E"
TYP. RECIPROCATING CONTROL FOR
3/4" PIPE/ROD COUPLING
Page 3 of 5
P816-0653 Rev. A
SECTION B2 - CONTROLS MOUNTING (Pump Handle)
Step 6.
Step 10.
Drill (2) 11/16" holes thru centerline of pole to mount
handle assembly, see control drawing for dimensions. Assemble handle and bracket assembly to pole
using (2) 5/8" thru-bolts. Use curved washer on
opposite side from bracket. Assemble ground strap
bar and lug to top thru-bolt and bracket as shown in
Figure A. Tighten securely.
Swing handle and clevis up to full closed position
(switch fully closed) and cut pipe as shown in figure
A. Assemble "U" bolts/clamp to hold pipe/rod in
position. Do not tighten yet.
Step 7.
Slide bottom section of pipe or rod up thru guide
above and clamp together using hardware provided.
Step 8.
Slide ground strap up pipe/rod and clamp lightly.
Step 9.
Assemble handle clevis to handle assembly. Adjust
with double nutting so that clevis will pivot. See
control drawing for clevis number.
Step 11.
Fasten loose end of ground strap assembly to tab on
handle bracket and tighten securely. Install suitable
earth ground wire in P.G. (Parallel Groove). Clamp
and tighten bolt securely.
NOTICE: THE GROUNDING RECOMMENDATIONS MADE
MAY DIFFER FROM THE STANDARD OPERATING AND
SAFETY PROCEDURES OF CERTAIN ELECTRIC UTILITY
COMPANIES. WHERE DIFFERENCES EXIST, THE OPERATING PROCEDURES OF THE ELECTRIC UTILITY APPLY.
Step 12. (Eye Nut Guides Only)
Adjust and tighten all guides to insure a straight
alignment of entire length of controls.
Proceed to page 5.
6"
6"
TYP. HANDLE MOUNTING FOR 3/4" I.P.S. PIPE OR
1" DIA. EPOXY ROD RECIPROCATING CONTROLS
TYP. HANDLE MOUNTING FOR 1-1/4" I.P.S.
RECIPROCATING CONTROLS
FIGURE A
P816-0653 Rev. A
Page 4 of 5
SECTION B2 - HANDLE ADJUSTMENT (Pump Handle Controls)
!!
WARNING
Resistance in the form of compression in reciprocating controls must be maintained in the closed position in order to
assure proper closing of the switch and to prevent creepage or accidental opening. See detail "A" for proper final
adjustment. Failure to do so could result in switch damage..
Step 1.
Step 3.
Remove all wire ties that are holding blades closed.
Final adjustment for reciprocating controls. (See
detail "A" below).
!!
WARNING
Failure to do so will result in damaging the switch.
Step 2.
Tighten handle clevis bolts or "U" bolts. (Do not
pierce yet). Open and close switch several times.
Inspect entire installation.
See Step 3
With switch in fully closed position with blades
against stops, loosen handle clamp hardware, pull
handle back approximately 15°-20° and retighten
clamp hardware. Push handle closed, a definite overtoggle effect should occur. NOTE: If switch should
happen to not fully open with this setting, loosen
hardware and set handle approximately 15°. repeat
this procedure until switch has an over-toggle
compression in closed position and will still fully
open.
Step 4.
Tighten all hardware to 25-28 ft. lbs. torque. Pierce
set screws where applicable.
DETAIL "A"
RECIPROCATING
PUMP HANDLE-CONTROLS
Handle adjustment and
grounding recommendation.
15° -20° Approx. can be obtained by
aligning back side of handle with back
side of padlocking hole as shown.
Tighten all clamps or "U" bolts.
SIDE VIEW
FRONT VIEW
Page 5 of 5
P816-0653 Rev. A
SECTION D. FINAL SWITCH FIELD INSPECTION:
TYPE "D" COUNTERCLOCKWISE SWITCH SHOWN WITH
ARCING HORNS AND DUOGAP® INTERRUPTERS
(Clockwise - Same Except Opposite Hand)
NOTICE
®
If the switch does not include Duogaps , ignore reference to pickup bolt and operating lever. All other action will be the same.
BLADE TIP
CASTING
TERMINAL
PAD
DUOGAP®
INTERRUPTER
DUOGAP®
INTERRUPTER
OPERATING LEVER
STATIONARY
SPRING
CONTACTS
ARC BOLT
ARCING HORN
BLADE
Step 1.
Step 2.
The arc bolt should contact the arcing horn before
the blade leaves the spring contacts.
The arc bolt will slide along the arcing horn. The
blade tip casting (on the end of the blade) contacts and
moves the Duogap® lever toward the trip position.
Step 3.
Step 4.
The arc bolt separates from the arcing horn. The
Duogap® trips. (When energized it would interrupt
the current.)
The blade tip casting slides free of the operating
lever. The blade moves to the open position and the
operating lever resets.
⁄4"
1
Step 5.
Step 6.
When closing the switch, the arc bolt must contact
the arcing horn before the blade tip casting contacts
and wipes past the operating lever.
When the switch is fully closed, the Duogap® operating lever is free of the blade tip casting. There will be
a 1⁄4" gap between the arc bolt and the arcing horn.
If any phase of the switch does not operate as described above, contact the nearest A.B. Chance Sales Office.
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be met
concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular problems are
encountered which are not sufficiently covered in this guide, contact A.B. Chance Company.
®
®
NOTE: Because Hubbell has a policy of continuous product improvement, we reserve the right to
change design and specifications without notice.
© 1997 Hubbell/Chance, 210 N. Allen, Centralia, MO 65240 — Printed in USA
POWER SYSTEMS, INC.
Bulletin 14-9309
P816-0651 Rev. A
A.B. CHANCE OVERHEAD SWITCHGEAR
SECTION F.
MAINTENANCE INSTRUCTIONS
Following a periodic inspection and maintenance
program will prolong the life of the Switch. The
Switch is designed for long-term exposure to all
weather conditions. However, certain environments
may reduce its life without some type of periodic
maintenance. Minimum inspection and maintenance specifications have been established. Following them will help ensure long service life.
Step 3.
NOTE: It is recommended that all overhead
switchgear go through a maintenance check at least
once a year, more frequent if switch is in a contaminated area.
Inspect all controls, interphase, and moving parts for
damaged or worn-out parts. Replace any damaged or
worn-out parts.
!!
CAUTION
Check for eroded contacts, alignment, and corrosion
of the hot parts. Replace any damaged components.
Lubricate all contacts and arcing horns with Dow
Corning FS-1292 silicone grease or equal.
Step 4.
Lubricate all control components with A.B. Chance
silicone spray Cat. #C400-1749 or equal.
Step 5.
A.B. Chance Company recommends that all maintenance work be performed on de-energized
switches. When working on live lines, follow your
utility's standard safe operating procedures.
WARNING —
Fiberglass Crossarms
!
Contact with the switch bases, mounting hardware or crossarm could result in electrical shock.
Check and tighten all thru bolts and mounting
hardware.
Step 6.
Inspect all pins, rivets, and bolted connections.
Tighten all hardware and replace damaged or wornout parts.
Step 7.
Check insulators for cracks, breaks or burns. Replace any damaged insulators.
Step 8.
Can cause severe injury or death.
Ground the switch bases, and mounting hardware
prior to performing adjustments or main work.
Step 1.
When possible, open and close the switch several
times to clean the contact surfaces and loosen
moving parts.
Make sure interrupters or arc chutes are free and
operating properly.
Step 2.
Refer to section C, D or E and inspect the switch for
proper operating sequence.
NOTICE
Check operation of the switch making sure over
toggle effect or wrap up still occurs when
closed. If not, readjust.
See Section B1 or B2.
Refer to ANSI C37.35 for additional recommendations. C37.35 is "IEEE Guide for the Application,
Installation, Operation, And Maintenance Of HighVoltage Air Disconnection and Load Interrupter
Switches."
These instructions do not claim to cover all details or variations in equipment, nor to provide for all possible conditions to be met
with concerning installation, operation, or maintenance of this equipment. If further information is desired or if particular problems
are encountered which are not sufficiently covered in this guide, contact A.B. Chance Company.
NOTE: Because Hubbell has a policy of continuous product improvement, we reserves the right to change design and specifications without notice.
®
®
POWER SYSTEMS, INC.
© 1997 Hubbell/Chance, 210 N. Allen, Centralia, MO 65240
Printed in USA
Bulletin 14-9310
P816-0652 Rev. A