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OPERATING INSTRUCTIONS
WARNING
SPeX
Meltric Corporation / 4640 Ironwood Drive Franklin, WI 53132
el. : 800 433 7642 / Fax : 414 817 6161 / e-mail : mail@meltric.com
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manufacturer of products using Marechal te chnology
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eltric.com
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GENERAL
INSSPEX C
he supply of the pilot circuit must be protected against
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ransient over-voltages of 4 kV by means of an
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ppropriate isolating device.
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Electrical interlocking with a contactor is mandatory.
Assembly
nsert cable through the cable gland and the handle or
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hrough the inclined sleeve.
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iring of the pilot wires
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Use flexible conductors with a cross-sectional area
etween 0.5 and 1 mm
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NOTICE: These conductors must be connected to the
ires of the microswitch by means of the isolated
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rimping lugs supplied. Use an appropriate crimping
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tool.
Wiring of the pilot contacts
he prewired pilot contact leads should be connected to
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he power control circuit with the ferrules provided. The
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blue ferrules should be used for 14 AWG (1.5 - 2.5 mm)
lexible wire and the yellow ferrules for 12 AWG (4 mm)
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flexible wire. Strip the wires to expose 0.30 in (8 mm)
of the conductors, insert both wires into the ferrule and
rimp with an appropriate tool.
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typical pilot circuit wiring diagram is shown below.
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16 to 20 AWG).
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land with an appropriate tool. To achieve the IP65/IP66
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f an interlocked connector, use a cable that incorporates
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he two pilot wires that are required for the interlock, or
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se an ATEX cable gland bushing that allows the
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passage of the main cable and the two pilot cables.
he silicone ring must be assembled on the receptacle ring.
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ssembly of the metal inclined sleeve.
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aintain air and creepage distances when assembling
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the appliance inlet or the receptacle onto the metal
nclined sleeve, according to the operating voltage of
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the main and auxiliary circuit and the degree of pollution.
The metal inclined sleeve must be grounded
o Earth.
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ssembly of the plug/inlet cap
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ssemble the small fixing part supplied on the last
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link of the chain and fix it to the plug/inlet body by
eans of one of the screws.
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olor-coded rings
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In order to achieve watertightness, do not forget the
olor-coded ring at the rear of the inlet or receptacle.
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The SPeX is a single-pole plug and receptacle for use
in explosive atmospheres and conforms to the relevant
international and European standards, particularly the
ATEX 94/9/EC Directive. SPeX can be used in zones
1 and 2 (gas) and 21 and 22 (dust).
In order to guarantee a connection and disconnection in
complete safety, the SPeX receptacle is fitted with an
electromechanical device (switch + ring) for electrical
interlocking with a contactor (breaker) and an integral
pilot control circuit.
Receptacle contacts are protected against standard
test finger (IP2X) according to IEC/EN 60529 standard.
There are inherent dangers
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
SPeX devices are provided with optional auxiliary
contacts that make after and break before the phase
contacts. The ratings for auxiliary contacts are shown
in Table 1.
Table 1 - Auxiliary Contact Ratings
Device 120VAC 240VAC 480VAC 600VAC
SPeX – 6A (220 max)* ––
* Rating is not UL or CSA listed.
INSTALLATION
SPeX must be installed by a qualified electrician
in accordance with all applicable local and
national electric codes. Be sure power is off before
starting.
Table 2 - Wiring Terminal Capacity
SPeX 750 MCM 2/ 0 12-14 AWG
associated with electrical
Main Contacts Aux. Contacts
Max Min
Wiring of the main conductor
Wire the main conductors within the amperage
and hazardous duty requirements of the ATEX
(T5) classification. The cross-section must be at
least that defined in the certificate or the CE Declaration
of Conformity, depending on the maximum current.
Strip the conductor by 1.8” (46 mm). Crimp the
threaded lug or the ferrule with the appropriate die
(NFC 20-130 or VDE 0220 or another). Hexagonal
crimping is recommended.
Tighten the threaded lug with a 24 mm wrench or
tighten the ferrule with a screw and a washer with a 19
mm wrench. Apply a torque ca. 95 ft-lbs (70 N.m).
While tightening the ferrule, prevent the contact from
rotating or transmitting torque to the device with a 24
mm wrench.
Assembly of the connector
Assemble the handles on the body of the products with
the supplied gaskets and screws and tighten the cable
Color-coded ring
The color-coded rings allows visual identification of the
pole depending on the color code of each country.
Isolating ring
Flat gasket Isolating ring
Color-coded ring
When assembling the SPeX on a metallic support
(enclosure, panel, etc.), the isolating ring must be
positioned as above.
Receptacles, plugs, connectors and inlets are protected
against dust and water ingress by means of caps, which
must be re-assembled after use.
To achieve IP65/IP66, the receptacle or connector cap
must be assembled with its slot facing the socket-outlet
protruding finger.
OPERATION
To ensure safe and reliable operation, Meltric
plugs and receptacles must be used in accordance with their assigned ratings.
They can only be used in conjunction with mating receptacles or plugs manufactured by Meltric or another
licensed producer of products bearing the
technology trademark.
TM
1 Insert the plug straight into the receptacle, until a
WARNING
click’ is heard. NOTICE: The plug and its flexible
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cable must not exert constraint on the receptacle.
onnect electrical power to the receptacle to eliminate
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he risk of electrical shock. Rules applying to products
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or use in explosive atmospheres impose that any re-
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lacement of component must be performed under the
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control of the manufacturer: Meltric Corporation.
eltric products require little on-going maintenance.
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However, it is a good practice to periodically perform
he following general inspections:
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• Check the mounting screws for tightness.
Verify that the weight of the cable is supported
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y the strain relief mechanism and not by the
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terminal connections.
• Check the IP gaskets for wear and resiliency.
eplace as required.
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Verify the electrical continuity of the ground circuit.
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Check the contact surfaces for cleanliness
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and pitting.
Use a clean cloth to rub off deposits of dust or similar
oreign materials on the contacts and the plug interiors.
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prays should not be used, as they tend to collect dirt.
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If any significant pitting of the contacts or other serious
amage is observed, the device should be replaced.
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Any repair or service must be achieved with genuine
arts only.
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ANUFACTURER’S RESPONSIBILITY
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eltric’s responsibility is strictly limited to the repair or
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eplacement of any product that does not conform to the
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warranty specified in the purchase contract. Meltric
hall not be liable for any penalties or consequential
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damages associated with the loss of production, work,
rofit, or any other kind of financial loss incurred by the
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ustomer.
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eltric Corporation shall not be held liable when its
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products are used in conjunction with products not
earing the
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se of Meltric products in conjunction with mating
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devices that are not marked with the
ology trademark shall void all warranties on the product.
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echnology trademark. The
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M
tech-
It was designed, manufactured and controlled in a strict
espect of the relevant international and European
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standards, laws and directives, and particularly of the
TEX Directive. It bears the CE marking whenever
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pplicable. It also bears its Ex classifi cation.
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Meltric Corporation is a member of the international
association, BECMA: the Butt-contact Electrical
onnectors Manufacturers Association.
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2 Pull on the plug to make sure it is properly
latched in the receptacle. A small rotation of the plug,
in either direction, allows the locking finger of the
receptacle to prevent any further rotation.
3 To close the pilot circuit, turn the ring of the
receptacle up to the stop towards “1”.
Check the continuity of the pilot.
Do not attempt to turn the ring toward "1" when
there is no plug engaged. Defeating the mechanical
lock could create a potentially hazardous or explosive
condition if energized under load.
4 To open the pilot circuit and unlock the plug, turn the
ring back to “0” up to the stop. Press on the button
to release the plug. The caps must then be
re-assembled on both sides.
MAINTENANCE
Before inspecting, repairing, or
maintaining Meltric products, dis-
INSSPEX C
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