Meltric DXA Serie Instrucciones De Operación

ENGLISH OPERATING INSTRUCTIONS
DXA SERIES
©2020 MELTRIC Corporation. All rights reserved.
MELTRIC Corporation / 4765 W. Oakwood Park Drive Franklin, WI 53132
Tel. : 800 433 7642 / Fax : 414 433-2701 / e-mail : [email protected]
A manufacturer of products using MARECHAL® TECHNOLOGY
meltric.com
A COMPANY OF MARECHAL ELECTRIC
GENERAL
Plugs, receptacles, connectors, inlets and
couplers are herein referred to as "devices". DXA
DECONTACTOR™ devices are intended for
industrial applications in potentially explosive
atmospheres. In addition to IECEx and cCSAus
hazardous location ratings, they are cCSAus rated
for current interrupting duty and are HP rated for
use as a motor disconnecting means. They are
not intended to be used as the primary motor or
branch circuit disconnect switch.
The receptacle safety shutter blocks access to the
contacts and creates a dead front that prevents user
exposure to live parts. The opening/closing of the
safety shutter is controlled by the insertion/
withdrawal of a plug with compatible ratings and
contact configurations.
These instructions must
WARNING
be followed to ensure the
proper installation, operation
DANGER
and maintenance of the devices. There are inherant
dangers associated with electrical products and
CAUTION
failure to follow appropriate safety precautions can
result in serious injury or death. Be sure to
disconnect all sources of shock before starting
NOTICE
installation or maintenance.
• All metal parts must be connected to Ground.
A Ground connection is supplied with all
metal accessories.
• These devices must be used in accordance
with their assigned current, voltage, IP and
Class/Division or Zone hazardous location.
• Any additional components used (e.g. cable
entry, adaptor, thread plug, etc.) must be
certified with a protection mode(s) and IP
ratings that are compatible with and maintain
the ratings of the device they are used with.
They must be installed according to the
manufacturer's instructions.
• Respect recommended tightening torques
(see Table T2).
• devices must be used with
complementary devices only. Connection to
devices not bearing genuine
will void the warranty and ratings.
• Certification requires that any replacement of
component(s) must be performed under the
control of the manufacturer MARECHAL
ELECTRIC S.A.S.
RATINGS & CERTIFICATIONS
DXA devices have both cCSAus and IEC ratings
for use in hazardous environments.
Class I Zone 1 AEx de IIC T*Gb Zone 21 AEx tD T*Db
Class 1 Division 2 Group A, B, C, D
Class 2 Division 2 Group E, F, G
This NEC and CEC rating certifies the product for
INSDXA B
use in applications where flammable gases, such
as acetylene, hydrogen, ethylene or propane, or
dusts, such as magnesium, coal or grain, may be
present under abnormal conditions.
Ex de IIC T*Gb Ex tb IIIC T* Db
This IEC rating certifies the product for use in
surface (non-underground) applications where
a high level of protection is required and where
the presence of an explosive atmosphere of
any type of gas or dust is likely to occur. The
associated maximum surface temperature of
the product is 88°C (190°F), at an ambient
temperature of 60°C (140°F).
Short Circuit Make & Withstand Rating
DXA devices are rated to make and withstand short
circuit currents with appropriate fusing as indicated in
Table T1. Consult NEC for Short Circuit Limits.
T1 - Short Circuit Make & Withstanding Ratings
Device Rating Fuse
DXA1 - 20A 25 kA @ 600 Vac RK1
--------------- ------------
--------------- ------------
* DXA1, DXA3 Ratings are based on testing with Mersen Non-Time
delay. Current Limiting fuses.
DXA6, Ratings are based on testing with Little fuse Non-Time
delay. Current Limiting fuses.
Auxiliary Contact Ratings
Some DXA 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 T2.
T2
1-2-3-N Auxiliary
1 2
Device mm AWG mm
1 2
DXA1 1.5-6 16-10 --
-------- -- -- --
--------
-- -- --
Wire capacity is based on certification testing. Wire size should be determined in accordance with the electrical code.
1
2 A device intended for flexible connections must be equipped with a flexible cord listed for extra-hard usage and terminated with listed fittings in accordance with all applicable local and national electrical codes
parts
Type*
30A
-- --
-- --
m
arechal
1-2-3-N Auxiliary
1 2
A-B A-B
AWG mm inch mm inch
-- 12 0.50 -- --
-- -- -- -- --
-- -- -- -- --
INSTALLATION
See Figure F3
• Install the receptacle on a downward angle, with
the latching pawls at the top and at the bottom.
•
Panel mounted devices must be assembled on a
"Ex e" increased safety enclosure according
to the drilling Figure F1.
Figure F1
A
4x
Ø
D
DXA1
A
WIRING
• The contact terminals are spring-assisted to
prevent loosening due to strand settlement,
vibration or thermal cycling.
CONDUCTOR PREPARATION
• Remove an adequate length of cable outer
sheath according to the accessory used.
• Ensure that the cable sheathing extends
through the cord grip into the handle or box as
required to achieve the intended sealing and
cord gripping performance.
• Strip conductor insulation to the length
indicated in Table T2.
• (Do not back terminal screws completely out).
Fully insert the conductor and tighten the terminal
screws to the torque indicated in Table T2.
GROUNDING CONNECTIONS
DXA1 metal casings are equipped with 3
ground terminals as shown in Figure F2.
Figure F2
m
arechal
1-2-3-N Auxiliary 1-2-3-N
A-B
mm inch mm inch Nm inch-lbs
12 0.50 -- -- 0.8 7.1
-- -- -- -- -- --
-- -- -- -- -- --
inch mm
A 1.89 48
D 2.24 57
Ø .196 (#9) 5
Auxiliary
A-B
3 (Philips)
Nm inch-lbs
3x0.75 mm
-- --
1/8"
-- --
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