Ring-Mount Assembly; Connect Internal Leads; Recommended Clearances; Mechanical - Eaton COOPER POWER LS4R Series Installation Instructions Manual

Ring-mount assembly (LS4R--- and LS4E---)
The tank wall should have a 1.325" (34 mm) diameter
N ote:
hole with an anti-rotation key (refer to Figure 8). Switch
should be located to ensure recommended clearances
in Figure 6 are maintained.
N ote: Recommended socket for securing the locking nut is a
3
6 point, 1 / " socket with a minimum socket depth of
4
1
1 / " (38 mm).
2
1. Install the gasket over the threaded switch boss (with
integral sealing gland) and insert through the tank hole.
(Note: make sure gasket's sealing surface is clean and
the gasket properly seated.)
2. Position the switch with the open sides of the switch
block on the bottom and on the side.
3. Assemble and tighten furnished locking hex nut to the
recommended torque in Table 7 .
4. (Optional) install spring (small end out) and index (limit)
plate over the shaft.
5. Install handle onto the switch shaft with the stainless
steel hex socket cap screw and lock washer supplied
and tighten to recommended torque in Table 5.
Table 5. Recommended Torque (Ring-Mount)
Part
Locking Nut
Switch Handle Screw
LOCKWASHER
(FURNISHED)
LIMIT PLATE
(FURNISHED)
TANK WALL
Figure 5. Four-Position Ring-Mount loadbreak switch
(top/side view).
Torque Level
40-60 ft-lbs (54-82 Nm)
40-60 in-lbs (5-7 Nm)
HEX SOCKET
CAP SCREW
(FURNISHED)
HANDLE
(FURNISHED)
SPRING
(FURNISHED)
HEX NUT
(FURNISHED)
4 WELD PINS
SEE FIGURE 10
(NOT FURNISHED)
TANK SEALING GLAND
AND GASKET
(FURNISHED)
MOUNTING RING
(FURNISHED)
SWITCH BODY
(2 SPRING SHOWN)
SECTIONALIZING SWITCH INSTALLATION INSTRUCTIONS MN800002EN March 2016

Connect internal leads

1. Connect internal leads to the switch contacts with
3/8" or (10 mm) hardware, (not supplied). (Max. cable
connections 500 MCM or 240 mm
recommended by fastener manufacturers. Apply torque
to the fasteners, not to the switch terminals. See Table
6 for recommended wiring schematics.
WARNING
All leads, connections and contact blades must remain
under oil. Failure to do so could cause arcing which
may result in component failure, property damage or
possible severe personal injury.

Recommended clearances

Mechanical

External handle must be clear of obstruction. Clearances
•
are also required for hook-stick operation.

Dielectric (under-oil)

It is not recommended that other components be located
•
above the switch, since clouds of gas rise during switch
operation. If such an arrangement cannot be avoided, the
components should, at a minimum, be located outside
the arc clearance zone and have an insulated barrier
between them and the switch. This barrier will deflect any
gas bubbles generated by the switch operation.
The outline drawing shown in Figure 6 describes the switch
and its application to oil-filled apparatus. This information
should be used only by trained personnel familiar with the
design requirements for oil-filled apparatus. This information
is not intended as a substitute for adequate training and
experience in such design. Should clarification or further
information be required for the user's purposes, contact
your Eaton representative.
All energized parts of the switch must be under oil and
spaced away from other energized parts or ground with
sufficient distance to withstand all operating and test
voltages. In order for proper switch operation to occur, an
arc clearance zone is required around the switch. This zone
should be under oil and free of all foreign materials. See
Figure 6.
WARNING
Recommended (minimum) under-oil clearances must be
followed to avoid internal arcing which could result in
component failure, property damage or possible severe
personal injury.
2
). Use torque values
5