© 2017 Surge Suppression, LLC NN00141
Rev. Date: 5/17/2017
Installation Instruction for
Three Phase High-Leg Delta,
120/240 Volt, 5-wire Suppressors
with Internal Fusing (three phases,
neutral and ground)
WARNING - HAZARDOUS VOLTAGES ARE PRESENT.
Improper installation may result in serious injury to the installer and/or damage to the
electrical system or related equipment. Read all instructions before beginning the installation. Safety equipment must be used as prescribed by OSHA,
whenever working around hazardous voltages.
Failure of unit and/or consequential equipment damage due to improper installation or misapplication is not covered by the product
warranty.
Voltage measurements and
installation must be completed by a licensed/qualified electrician
in accordance with the National and/or Canadian
Electric Code, State, and Local codes. These requirements supersede this instruction.
POWER MUST BE REMOVED FROM THE ELECTRICAL SYSTEM BEFORE INSTALLING THE UNIT.
INSTALLATION MATERIALS REQUIRED
The following is a list of materials that may be needed for proper installation of this Surge Protective Device (SPD). This list is intended to help the installer anticipate
materials needed for a successful installation. The installer should become familiar with the scope of work to avoid lost time and improper installation. Failure to use fittings
that are “Listed” will void the “Listing” of the SPD.
•
For Splices: 3 (or more) cable taps; such as: NSI IPCS- 2001 or 7501 (per Code).
•
Attachment Hardware: Use (four) screws or anchor toggle bolts, flat washers and lock washers.
•
¾” hub (included with most models).
•
Tools: Drill & bits, Mechanical Knock Out Set, Channel Locks™, Level, Screwdrivers, Appropriate Safety Equipment.
WIRING DIAGRAM
This device is suitable for use on a circuit capable of delivering not more than 200,000 RMS symmetrical
Amperes, for the respective models’ (max.) nominal voltage shown in the Table of Maximum Suggested
Operating Voltages on page 2.
The SPD is equipped with integral fuses. This allows the device to be installed directly to the system bus
bars, to the main lugs in a panel or disconnect, or to a circuit breaker. Consult NEC/CEC, State and
Local Codes to assure compliance
†
.
In the event that one of the LED status indicators fail to illuminate, the entire device should be returned
for warranty replacement. If service of the device is a consideration (i.e: removal and replacement), and
there is no means to remove power from the SPD without removing power from the entire system, the
installation should incorporate a disconnect device between the SPD and the system connecting point.
The design of these units provides superior protection for sensitive/critical equipment connected to
distribution panels, sub-distribution panels or individual equipment disconnects. These units are
designed for use at IEEE C62.41 Location Categories A, B, and C. “Voltage Responsive” type units are
designed to be used in 50 to 420 Hz applications. NOTE: SPDs with model numbers beginning with the
letter “C” are “Frequency Responsive” (Sinewave tracking) units and are designed to be used in 50 to 60
Hz applications only and shall not be used at locations where the voltage frequency fluctuates (i.e.: on
the output of variable frequency drives).
When inspecting the panel prior to installation, make a visual check that there are no Neutral to Ground
bonds that violate the NEC/CEC.
Note: Pre-existing breakers of the rated load size
(30
amp, etc.), that are serving existing loads, may be
utilized if the breaker is “Listed” for this application (see NEC
)
and provided the owner/tenant has
authorized multiple conductor termination.
†
[ex.: NEC ‘10-foot tap rule’ for direct bus tapping.].
NOTE FOR ISOLATED GROUND
If the electrical system uses an isolated ground, connect the SPD ground to the isolated ground bus.
EXCEPTION FOR METAL ENCLOSURES AND/OR METALLIC HUBS
–
For metal enclosures and/or metallic hubs, the SPD ground wire is bonded to the enclosure internally. If the system uses an isolated ground, the SPD enclosure must be
isolated from the panel or load it is being connected to through the use of an insulated conduit fitting or other “Listed” fitting. In this installation, the ground wire from the SPD
must terminate at the isolated ground bus.
BEFORE INSTALLATION
For proper performance, the SPD must be installed with the shortest lead length possible. Sharp bends should be avoided.
No position-oriented components are used in the units. Devices can be mounted upside down or sideways allowing for shortest possible lead lengths. There are a few basic
principles for surge suppression installation. They are:
1.
For proper performance, the SPD must be installed with the wires as short and straight as humanly possible. Any sharp bend in the wire is unacceptable!
This applies to phase, neutral, and ground leads. The objective is to reduce the lengths of wire provided on each unit, not add to it. The priority is to the
phase leads, then the neutral, and then the ground lead.
2.
Install the SPD on the side of the panel closest to the neutral bus, if present, and use a breaker on the same side.
3.
Use a breaker close to the neutral bus and the SPD to keep the wires as short and straight as humanly possible.
4.
The ground wire may be connected to the panel by using a ground lug installed near the SPD in the can or frame as they are grounded. (See exception
above for Isolated Grounds).
15424 Flight Path Drive
Brooksville, FL 34604
Phone (888) 987-8877
Fax (352) 799-6987
