Meltric SP Series - Manual

GENERAL
SP devices are single-pole, high-amperage plugs and
receptacles that are designed for safety, durability,
and ease of operation. Each device is mechanically
interlocked with an integral pilot circuit switch for
controlling the power circuit in order to prevent
connection and disconnection under load. Each of
the phases as well as the neutral and ground, are
color coded and keyed to prevent improper connection.
SP receptacles are IP 2X rated to prevent accidental
finger contact with live parts.
There are inherent dangers
associated with electrical
products. Failure to follow safety precautions can
result in serious injury or death. These instructions
must be followed to ensure the safe and proper
installation, operation and maintenance of the Meltric
devices. Before installation, disconnect all sources of
power to the circuit to eliminate the risk of electrical
shock. This product must be installed with an
electrical interlock that prevents connection or
disconnection in a loaded condition.
RATINGS
The SP series is CSA listed for use in Non-Load
Break applications up to 600A at 600VAC, 500 HP 3
phase at 480 VAC and 600 VAC. The SP devices
are NOT designed or Listed for current interruption.
The SP receptacle is provided with two auxiliary/pilot
contacts that make (close) when the locking collar is
rotated after plug insertion. The pilot contacts are
designed for use in control circuit wiring of medium
current switchgear, (see diagram of pilot circuit
wiring). The SP pilots have a D300 rating as shown
in Table 1. The phase contact is rated to withstand a
30 kA short circuit with a current limiting fuse rating
as shown in Table 2. Consult Meltric Engineering for
horsepower ratings and limitations at lower voltages.
INSTALLATION
SP devices should be installed by qualified
electricians in accordance with all applicable
local and national electrical codes.
Before installing, verify the power is off and the prod-
uct ratings are appropriate for the application. Ensure
the conductors meet code requirements and are with-
in the wiring terminal capacities noted in Table 3.
NOTICE: Ensure the plug and its flexible cable do
not exert a significant force or a constraint on the
receptacle.
Wiring of the pilot contacts
The SP auxiliary/pilot contact leads of each device
should be wired in series within the power control
circuit. A typical pilot circuit wiring diagram is
shown below.
Wiring of the main conductor
Use a flexible cable between 2/0 and 777 MCM (70
and 400 mm 2 ). Strip the insulation as appropriate for
the lug being used. Solder lugs have integral threads
that screw into the terminals. The solder lug should
be tightened until the tapered section is secured in
solid contact with the terminal. Crimped lugs are
secured with M12 bolts that should be tightened to
approximately 30 ft-lb (40 N.m.) with a 3/4” (19 mm)
wrench.
NOTICE: To avoid transmitting torque to the device
moldings when securing the lugs, hold the terminal in
place with a 24 mm wrench (flats are provided).
Hole Pattern for Custom Mounting
NOTICE: In order to maintain IP66/67 protection in
custom installations, watertight seals must be used
under the heads of the four mounting bolts and they
must be retained by a lock washer and nut on the
inside of the box or panel. Alternatively, four blind
holes can be drilled and threaded to accommodate
#8-32 x 5/8” mounting screws. The hole depth must
be sufficient to achieve adequate gasket compression.
Attaching the handle
Insert cable through cable gland and handle before
tightening the phase conductor. Assemble handle
with the screws and gasket supplied, (use short
screws for inlets, long screws for receptacles) and
tighten cable gland with an appropriate tool.
NOTICE: Meltric solder lugs are required for use
with handles.
Attaching the metal angle (if required)
Attach receptacle or inlet to metal angle using the
screws and gasket supplied, (use short screws for
inlets, long screws for receptacles). Connect the
metal angle to ground.
Assembly of the plug/inlet cap
Attach the cap to the plug/inlet by retaining the end
of the chain under one of the mounting screws.
Gasket
In order to achieve rated watertightness, the flat
black gasket must be installed between the inlet or
receptacle and the panel or accessory to which it
is attached.
Rated current and voltage markings
It is essential to indicate the current and voltage of
the main circuit on the supplied stickers. Apply the
stickers on or adjacent to the product so they can
easily be seen.
OPERATION
To ensure safe and reliable operation, Meltric
plugs and receptacles must be used in
accordance with their assigned ratings.
SP devices can only be used in conjunction with mat-
ing receptacles or plugs manufactured by Meltric or
another licensed producer of products bearing the
TM technology trademark.
L1 L2 L3 N
L1 L2 L3 N
P1 P2
2” 1.67”
1.67”
Ø.201 thru or
tap for 10-32
Table 1 - Auxiliary Contact Ratings
Device 120VAC 240VAC 480VAC 600VAC
SP .6A .3A – –
Table 2 - Short Circuit Withstand Ratings
Device Rating Fuse Type 1
SP – 600A 30 kA @ 600 VAC Class L 1400A 2
1 - Short Circuit Rating applies with fusing up to this amperage.
Ratings are based on tests performed with Ferraz Shawmut
non-time Delay Current Limiting fuses.
2 - Tests performed with maximum allowable motor fusing sized
per the 2008 NEC.
Max Min
SP 777 MCM 2/0 12-14 AWG
Table 3 - Wiring Terminal Capacity
Main Contacts Aux. Contacts
SP
OPERATING INSTRUCTIONS
Meltric Corporation / 4640 Ironwood Drive Franklin, WI 53132
Tel. : 800 433 7642 / Fax : 414 817 6161 / e-mail : [email protected]
INSSP E
A manufacturer of products using Marechal technology
meltric .com
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