Meltric SP Series User Manual
L1 L2 L3 N
L1 L2 L3 N
P1 P2
OPERATING INSTRUCTIONS
WARNING
SP
INSSP E
Meltric Corporation / 4640 Ironwood Drive Franklin, WI 53132
el. : 800 433 7642 / Fax : 414 817 6161 / e-mail : mail@meltric.com
T
manufacturer of products using Marechal te chnology
A
eltric.com
m
NSTALLATION
I
P devices should be installed by qualified
S
lectricians in accordance with all applicable
e
local and national electrical codes.
efore installing, verify the power is off and the prod-
B
ct ratings are appropriate for the application. Ensure
u
he conductors meet code requirements and are with-
t
in the wiring terminal capacities noted in Table 3.
able 3 - Wiring Terminal Capacity
T
ain Contacts Aux. Contacts
M
ax Min
M
P 777 MCM 2/ 0 12-14 AWG
S
NOTICE: Ensure the plug and its flexible cable do
ot exert a significant force or a constraint on the
n
eceptacle.
r
ole Pattern for Custom Mounting
H
.201 thru or
Ø
ap for 10-32
t
2”1.67”
.67”
1
NOTICE: In order to maintain IP66/67 protection in
ustom installations, watertight seals must be used
c
nder the heads of the four mounting bolts and they
u
must be retained by a lock washer and nut on the
nside of the box or panel. Alternatively, four blind
i
holes can be drilled and threaded to accommodate
8-32 x 5/8” mounting screws. The hole depth must
#
e sufficient to achieve adequate gasket compression.
b
ttaching the handle
A
Insert cable through cable gland and handle before
ightening the phase conductor. Assemble handle
t
with the screws and gasket supplied, (use short
crews for inlets, long screws for receptacles) and
s
ighten cable gland with an appropriate tool.
t
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.
Table 1 - Auxiliary Contact Ratings
Device 120VAC 240VAC 480VAC 600VAC
SP .6A .3A ––
Table 2 - Short Circuit Withstand Ratings
Device Rating Fuse Type
SP – 600A 30 kA @ 600 VAC Class L 1400A
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.
1
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).
2
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 mating receptacles or plugs manufactured by Meltric or
another licensed producer of products bearing the
TM
technology trademark.
OTICE: Do not attempt to operate the SP device
N
ntil the receptacle is mounted. The mounting bolts
u
must be in place to maintain alignment of compo-
ents and compression against the panel or handle is
n
equired to maintain assembly.
r
P series plugs and receptacles feature different
S
mechanical keying of L1, L2, L3, N, and G. Mating
lug/ receptacle combinations are color coded for
p
asy identification.
e
P series plugs and receptacles are not intended
S
to be connected or disconnected under load.
he pilot circuit must be used to control the
T
ower circuit.
p
he pilot circuit can only be turned ‘on’ when the plug
T
is engaged and the plug can only be removed when
the pilot curcuit is in the ‘off’ position. For safety,
eltric recommends the following connection
M
sequence: Ground, Neutral, Phase 1, Phase 2,
hase 3.
P
Connection
Insert the plug straight into the receptacle until a
click’ is heard. Figure 1 The plug and its flexible
‘
cable must not exert force on the receptacle.
o not attempt to turn the ring towards “1”
D
hen there is no plug engaged. Defeating the
w
mechanical lock could create a potentially
azardous condition if energized under load.
h
3
Disconnection
To open the pilot circuit and unlock the plug, turn the
ing back until the “0” is aligned with the arrow.
r
Figure 4 This action signals the controller to switch
off the power and unlocks the plug. To remove the
lug, press firmly on the latch release button and
p
simultaneously pull on the plug. A slight rotation of
he plug may be required before it can be removed.
t
ANUFACTURER’S RESPONSIBILITY
M
Meltric’s responsibility is strictly limited to the repair or
eplacement of any product that does not conform to the
r
arranty specified in the purchase contract. Meltric
w
shall not be liable for any penalties or consequential
amages associated with the loss of production, work,
d
profit, or any other kind of financial loss incurred by the
ustomer.
c
Meltric Corporation shall not be held liable when its
roducts are used in conjunction with products not
p
bearing the
se of Meltric products in conjunction with mating
u
evices that are not marked with the
d
M
T
technology trademark. The
TM
ech-
t
nology trademark shall void all warranties on the product.
Meltric Corporation is an ISO 9001 certified company.
Its products are designed, manufactured and rated in
ccordance with applicable UL, CSA and IEC
a
standards. Meltric is also a member of BECMA, the
nternational Butt-contact Electrical Connectors
i
Manufacturers’ Association. Like all members, Meltric
additionally designs and manufactures its products in
ccordance with BECMA standards established to
a
ensure intermatablility with similarly rated products
anufactured by other members.
m
1
Pull on the plug to make sure it is properly latched in
the receptacle. Figure 2 A small rotation of the
plug, in either direction, engages the locking finger on
the receptacle to prevent any further rotation.
2
Latch
4
Release
Button
Achieving rated watertightness
Rated IP66 / 67 watertightness to is achieved when
the plug and receptacle are mated. When disconnected, the receptacle cap must be fully inserted with
the slot in the cap aligned with the protruding ‘button’.
The plug cap must be pressed firmly into place.
NOTICE: Proper steps must be taken to maintain
watertightness at threaded connections on the plug
handles or at the junction box. The use of a sealer
tape is recommended.
MAINTENANCE
WARNING: Before inspecting, repairing, or maintain-
ing Meltric products, disconnect electrical power to
the receptacle to eliminate the risk of electrical shock.
Meltric products require little on-going maintenance.
However, it is a good practice to periodically perform
the following general inspections:
•Check the mounting screws for tightness.
• Verify that the weight of the cable is supported
by the strain relief mechanism and not by the
terminal connections.
• Check the IP gaskets for wear and resiliency.
Replace as required.
• Verify the electrical continuity of the ground
circuit.
• Check the contact surfaces for cleanliness
and pitting.
www.becma.ch
To close the pilot circuit and mechanically lock the
plug into the receptacle, turn the ring on the receptacle until the “1” lines up with the arrow across from
the release button. Figure 3
Use a clean cloth to rub off deposits of dust or similar
foreign materials on the contacts and the plug interiors.
Sprays should not be used, as they tend to collect
dirt. If any significant pitting of the contacts or other
serious damage is observed, the device should be
replaced.
INSSP E
Loading...