Meltric DN7c Series Instruction Manual

meltric com
OPERATING INSTRUCTIONS
DN7C/DN9C/DN20C
MULTIPIN
Meltric Corporation / 4765 W. Oakwood Park Drive Franklin, WI 53132
Tel.:800 433 7642/Fax:414 433 2701/e-mail:mail@meltric.com
A manufacturer of products using Marechal technology
GeNeRAL
Meltric's DN7c, DN9c and DN20c Series industrial,
multipin plugs and receptacles are designed to
ensure safety and provide reliable electrical connections.
Please follow the instructions below to ensure proper
installation and safe use of the product.
There are inherent dangers
associated with electrical prod-
WARNING
ucts. 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.
RATINGS
The DN9c and DN20c products are manufactured
and load-break rated in compliance with CSA
Standard C22.2 No. 182.1. The DN7c product is
manufactured and rated in compliance with CE
Standards IEC 60309-1. The product ratings are
indicated on the device's labels. Additionally the
DN9c and DN20c are HP rated for multiple HP loads
as long as any single HP load doesn't exceed the
levels shown in Table 1. Their short circuit withstand
levels and fuse ratings are shown in Table 2.
Table 1 — Maximum HP at Rated Voltage Levels
1-Phase
Device 120 V 240 V 208 V
HP FLA HP FLA HP FLA HP FLA HP FLA
(A) (A) (A)
DN9c 1/3 7.2 1 8 2 7.8
DN20c 1/6 4.4 1/2 4.9 1 4.8
Table 2 — Short Circuit Withstand Ratings
Device Rating Fuse
DN9c 10 kA @ 480 VAC
DN20c 10 kA @ 480 VAC
*Ratings applies with fusing up to this amperage. Ratings are based
on tests performed with Ferraz Shawmut current limiting fuses.
INSTALLATIoN
These products should be installed by qualified
personnel in accordance with all applicable
local, state and national electrical codes.
Before starting, verify that the power is turned off; the
product ratings are appropriate for the application;
and the conductor sizes are within the capacities of
the terminals noted on Table 3.
Table 3 — Wiring Terminal Capacity* (in AWG)
Device
DN7c (50A)
DN7c (90A)
DN7c (150A)
DN9c
DN20c
*Capacity is based on THHN wire sizes.
General Notes & Precautions
1. Self-tapping screws are provided for use with
some polymeric accessories. NoTICe: Once
they are seated, care should be taken in order
to avoid over-tightening them against the
plastic material.
INSDN I
2. Various handles, cord grips or strain relief
options may be used. These instructions are
based on handles provided with integral,
multi-layer, bushing cord grips.
3. Wire strip lengths are indicated in Table 4. Strip
lengths for cable sheathing will depend on the
specific application.
Table 4 - Wire Strip Length – Dimensions A
Device/Contacts
DN7c (50A) Contact
DN7c (90A) Contact
DN7c (150A) Contact
DN9c
DN20c
4. Wiring terminals are spring-assisted to prevent
loosening due to wire strand settlement, vibration
and thermal cycling. NoTICe: They should not
be over-tightened. Appropriate tools and
tightening torques are indicated in Table 5.
Table 5 - Terminal Screw Tightening Torques
Device/Contact
DN7c (50A)Contact
DN7c (90A)Contact
DN7c (150A) Contact
DN9c Contact
DN20c Contact
3-Phase
240 V 480 V The DN9c and DN20c plugs and receptacles' contacts
are labeled with F or S numbers respectively. The
(A) (A) F-number on the inlet has a corresponding S-number
on the receptacle. See table 6 for details.
3 9.6 5 7.6
1 4.2 3 4.8
Plug / Inlet
Type* Contact Nos.
RK1 NTD 35 A
F1 (Ground)
RK5 TD 20 A
F2
RK1 NTD 35 A
F3
RK5 TD 20 A
F4
F5
F6-19
F20
Contacts
Min Max
10
8
6
16
16
Receptacle Plug / Inlet
Inches mm Inches
3/4 20 3/4
1 25 1
1 3/16 30 1 3/16
Contacts 1/2 13 1/2
Contacts 1/2 13 1/2
Torque Required Screwdriver
in-lbs N-m or Allen Wrench
13.3 1.5 5/64" hex head 2mm hex head
30.0 3.5 1/4" precision tip
80.0 9.0 4 mm hex head
4.50 0.5 5/64" hex head 2mm hex head
4.50 0.5 5/64" hex head 2mm hex head
Table 6 - DN9c & DN20c Wiring
Corresponding Receptacle
mating pin Contact Nos.
S1 (Ground)
S2
S3
S4
S5
S6-19
S20
Assembly for In-line Connections
Do not overtighten terminal or self-tapping
screws. Tighten screws to the proper torque to
ensure a secure connection.
When the DN9 and 50A DN7c products are used
as in-line connectors, finger drawplates should be
installed on both the receptacle and plug in order to
6
provide the user with the leverage to connect the
2
device (finger drawplates are not available on DN20c
3/0
or 90A and 150A DN7c devices).
10
10
NoTICe: The longer screws provided with the finger
drawplates must be used when assembling devices
with finger drawplates because the shorter screws
provided with the handle are not long enough to
properly secure both the handle and drawplates to the
inlet or receptacle and achieve a watertight connection.
Bushing
Strain
Relief
Handle
Compression
Nut
Adjust the bushing diameter to fit the cable by removing
the inner sections as required. Insert the bushing
into the strain relief, then insert the assembly into the
handle and loosely install the compression nut.
Insert the cable through the handle, the thin black
(neoprene) drawplate gasket, the finger drawplate
(if applicable) and the color coded gasket. Strip the
mm
cable sheath to provide a workable wire length, being
20
mindful that the sheath must extend into the handle
25
to achieve a secure cord grip. Then strip the individual
30
wires to the lengths indicated in Table 2 and twist the
13
strands of each conductor together.
13
Back out the terminal screws on the receptacle (or
inlet) far enough (but not completely) to allow the
conductors to pass. Insert the conductors fully into
their respective terminals and tighten the terminal
screws with the appropriate tool to the torque
indicated in Table 3.
Verify that the cable sheath extends beyond the strain
relief and into the handle. Assemble the receptacle
(or inlet), the color coded gasket, followed by the
finger drawplate, and the thin black (neoprene)
drawplate gasket (if applicable) to the handle and
tighten the compression nut to secure the cable.
Assembly for Mounted Receptacles (or Inlets)
In applications where the receptacles (or inlets) are
mounted to wall boxes, panels or other equipment,
optimal operation is achieved when the devices are
installed with the latch at the top.
Mount the receptacle
at a downward angle
whenever possible.
Insert the cable or wires through the wall box and cut
to allow adequate length. Strip the cable sheath as
Finger Drawplate Gasket
Finger Drawplate
Color-Coded Receptacle
Gasket (or Inlet)
Mount with the latching pawl at
the top to counteract the weight
and strain of the plug & cable.