■
Torque requirements as defined in Table 5 shall be
maintained.
TABLE 5
Recommended Torque
Step 2
LEAD TRAINING
■
Cantilever Strength of Assembly:
Sufficient to support one 500MCM Cu lead per
contact.
■
Switch contacts are pre-gauged at factory and will
have some rotation in same plane as switch blade.
Leads attached to switch contacts must not restrict
this rotation. The nuts holding the contacts should not
be tightened. Leads can be bolted to rear of contact
and care should be taken to minimize mechanical
stress on the contacts. Standard dielectric dimensions
for lead separation should be followed. Tight lead
training may cause excess cantilever force and
difficulty in switch operation.
Step 3.
INDEX PLATE
■
An externally installed optional limit plate prevents
rotation to positions other than the one desired. Refer
to Figure 4.
3
Mounting Bolts:
3/
8" diameter mounting bolts to be
torqued 60-100 in-lbs
To Seal (Gland):
60-120 in-lbs
2.750"
(70 mm)
4.375"
(111 mm)
1.5"
(38.1 mm)
TYP.
1.325"
(34 mm)
DIA. HOLE
.140"
(4 mm)
RAD.
ON INSIDE WALL:
COUPLING WITH 3/8-16
TAPPED THREAD
X .75 LG
(19.1 mm)
ON OUTSIDE WALL:
.312" Dia. x 625" Long
(7.9 mm) (15.9 mm)
WELD PIN
1.5"
(38.1 mm)
TYP.
.662"
(17 mm)
1.375"
(35 mm)
TYP.
2.187"
(56 mm)
TYP.
Figure 3.
Mounting hole and coupling placement.
NOTES:
1. Weld pins, couplings and position designations not included with switch. Pre-welded coupling pin plates available-cat. no. 2037424C02M.
2. All couplings and pins to be welded flat within an angularity tolerance of ± 30’.
3. Alternate method: weld 3/8 – 16 x 1.25 L studs in place of couplings and use .75 long spacers over studs.
OPEN
LINE A
ONLY
LINES
A & B
LINE B
ONLY
Figure 4.
View of tank front with optional limit plate positioned over pin.
NOTE: With limit plate positioned securely as shown, switch can be operated
only counterclockwise to “line A only” position and no further.
WELD PINS (4)
(FOR
LOCATING
LIMIT PLATE)
NOTE: Typical position configuration shown for some “V” blade switches.
See catalog section 800-64 for other switch layouts and schematics.
Position labeling provided by equipment manufacturer.
