Hubbell M3 Programming manual

Part No. P807-0199
Rev. C 6/96
INSTRUCTIONS
FOR
INSTALLATION, OPERATION and MAINTENANCE
CHANCE TYPE M3 STATION SWITCH
The A. B. Chance Type M3 disconnect switch is a
single-phase hookstick operated switch. It is for
manualswitchingofde-energizedorparallelcircuits
ofoverheadlinesonanelectricaldistributionsystem.
The M3 switch has no current making or breaking
capacity. Designvariationsallowforapplicationsas
an electrical distribution switch or as an electrical
station switch. A number of options (connectors,
captive hardware, by-pass studs, etc.) are available
to better fit the user’s needs.
The station style M3 disconnect switch is made for
mountinginaninverted(Figure1)orverticalposition
(Figure 2).
SelectaproperlyratedM3switchforeachinstallation
with consideration to continuous current, BIL, and
ratedvoltage. Shouldtherebeanyconcernontheuse
of this M3 switch as rated, consult your supervisor
before installation.
Inspect the switch for damage or missing parts. If
damagefromroughhandlingisevident,immediately
fileaclaimwiththetransportationcompany. Contact
thenearestChancesalesofficeforreplacementparts.
Theseinstructions do notclaimto coveralldetails or variationsinequipment, nortoprovide for allpossibleconditions tobe 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.
GENERAL
Figure 2 — Vertical Mount
Read and understand these instructions before
installationoroperationof this equipment. Competent
personnel who understand proper safety procedures
must select, install, and service this equipment. This
instruction guide is written for such personnel. This
guide is not a substitute for adequate training and
experience in safety procedures for this type of
equipment.
OPEN LATCH
(OPTIONAL)
CONNECTOR
(OPTIONAL)
BLADE STOP PIN
INSULATOR
BASE
Figure 1 — Inverted-Underhung
LOADBREAK HOOKS
PULL RING
BY PASS
STUD
(OPTIONAL)
NOTE:
Because Hubbell has a policy of continuous product improvement, we reserve the right to change design and specifications without notice.
© Copyright 1996 Hubbell / Chance, 210 N. Allen, Centralia, MO 65240 Printed in USA
▲
!WARNING
®®
POWER SYSTEMS, INC.

Part No. P807-0199
Rev. C 6/96
INSTALLATION
The M3 switch is supplied with a blade stop pin.
Before raising switch for mounting, place this pin in
theproperholetoobtaineithera90°or160°(Figure
3) blade opening. Some switches may be supplied
withanopenbladelatch. Thestoppinmustbeinthe
160°hole, as shown in Figure 3, to engage the open
blade latch.
Attach the M3 switch to the mounting structure
using 1/2" hardware supplied by user. The station
switch can also be supplied with back strap and
mounting hardware as an option. Tighten bolts to
about 12 - 15 ft.-lb.
Deadendconductors(ifrequired)todeadendingholes
in switch base using your utility’s normal practices.
Wire brush terminal pads and apply a coating of
oxidationinhibitorsuchasChance z.l.n.(100or200).
If the switch has been supplied with by-pass studs
assemble them between terminal pad and terminal.
See Figure 4.
Wirebrush connector mounting surfaces and attach
toterminalpadsasshowninFigure4withhardware
facing away from insulators. Wire brush electrical
conductorsandapplyacoatingofoxidation inhibitor
such as Chance z.l.n. (100 or 200) before inserting
intoconnector. Tightenconnectorhardwaretoabout
30 foot-pounds (1/2" hardware).
OPEN LATCH
(OPTIONAL)
160°BLADE OPENING
90°BLADE OPENING
Figure 4
Figure 3
TERMINAL PAD
BY-PASS STUDS
(OPTIONAL)
TERMINAL
(OPTIONAL)
2

Part No. P807-0199
Rev. C 6/96
OPERATION
Only qualified personnel should operate a disconnect
switch. Such personnel should wear appropriate
protective equipment such as rubber gloves, hard hat,
safety glasses, etc., in accordance with established
utility and safety practices.
Donotattempttoopenadisconnectswitchtointerrupt
load current. An arc started by opening a disconnect
switch under load could cause injury to personnel or
damage to equipment.
To close the M3 disconnect switch, place the
hookstickinthe pull ringonthe blade androtatethe
bladetoanintermediatepositionasshowninFigure
5. Look away from the switch. Quickly and firmly
drivetheswitchbladetotheclosedposition. Carefully
remove the hookstick from the pull ring to avoid
opening the switch.
TheM3switchisproperlyclosedwhenthebladehook
is fully engaged with the latch portion of the blade
stop as shown in Figure 6.
ToopentheM3disconnectswitch,placethehookstick
in the pull ring as shown in Figure 7.
Look away from the switch. Quickly and firmly pull
down and towards the hinge end of the switch at
about a 45°angle. Once the switch blade is open,
completethebladetraveltoitsstopposition. Carefully
remove the hookstick from the pull ring.
AllChanceM3disconnectswitchesincludeloadbreak
hooks for use with a loadbreak tool. To open the
switch under load, use only an approved loadbreak
toolordevicedesigned for use with switches. Follow
the instructions provided with such tools.
Figure 6
Figure 5
Figure 7
3
▲
!WARNING
▲
!WARNING

Part No. P807-0199
Rev. C 6/96
MAINTENANCE
The Chance M3 disconnect switch should require
little maintenance. Following a program of
periodic inspection and maintenance will prolong
the life of the M3 switch.
• Operate the switch periodically to clean contact
surfaces and to free moving parts.
• Check for burned or pitted contacts and replace
if necessary.
• Check hinge bolt for looseness, and if loose,
torque to 40-in.-lb. and apply Loctite®-271 to
bolt threads.
• Inspect all blade rivets for tightness and replace
blade if loose.
• Inspect mounting hardware and tighten as
needed (12 - 15- ft.lb.)
• Replace any broken or cracked insulators and
clean or replace if heavily contaminated.
For additional recommendations, refer to ANSI
C37.35 “IEEE Guide for the Application,
Installation, Operation, and Maintenance of High
Voltage Air Disconnecting and Load Interrupter
Switches.”
© Copyright 1996 Hubbell / Chance, 210 N. Allen, Centralia, MO 65240 Printed in USA
®®
POWER SYSTEMS, INC.