© 2017 Surge Suppression, LLC NN00140 Rev. Date: 6/29/2017
Table of Maximum Suggested Operating Voltages and Model Wire Colors
DELTA or WYE
Nominal
System Voltage
2Nx
Model
Voltage Code
Phase
To
Phase
Phase
To
Ground
Phase Leg #1
Wire
Color
Phase Leg #2
Wire
Color
Ground
Wire
Color
110, 120, 125
2N1
132 V
132 V
Black
Black
Green
208, 220, 230, 240, 250
2N2
264 V
264 V
Black
Black
Green
305, 347, 380
2N3
418 V
418 V
Black
Black
Green
450, 460, 470, 480
2N4
528 V
528 V
Black
Black
Green
525, 575 / 600
2N5 / 2N6
660 V
660 V
Black
Black
Green
INSTALLATION STEPS (
NOTE: Only ONE LED is used for 2Nx models)
STEP 1:
Check Voltages
•
Confirm that the nominal system voltage does not exceed the maximum suggested operating voltage for the model to be installed according to the Table above. All
voltage measurements should be completed with a RMS voltmeter. DO NOT INSTALL THE FUSED UNIT IF THE MEASURED VOLTAGE EXCEEDS THE
MAXIMUM SUGGESTED OPERATING VOLTAGE OF THE DEVICE.
CAUTION: Do not proceed further until power has been removed from the electrical system.
STEP 2:
Mounting the Unit
Non-lug type SPDs are provided with 18-24 inches of #10 AWG/TEW stranded wire. For best performance, mount the SPD so that all wires can be cut and connected in
the shortest, straightest path possible, the goal being 6 inches of wire length or less. For every inch of conductor longer than 6-inches, you increase the let-through voltage
of the SPD by 21.7 volts for an ANSI/IEEE Category B, 6kV, 3kA impulse.
•
No sharp bends should be made in the installation. If bends are unavoidable, make them smooth and flowing. The device contains no position-dependent
components; therefore, the device can be mounted upside down or sideways.
•
Do not cut any wires until suppressor has been mounted. Units with plastic hubs must be installed with the non-metallic flexible conduit and extra hub.
•
While holding the SPD on the wall, determine the shortest, straightest distance between the hub on suppressor and hub to be installed on panel. Cut the flexible
conduit to shortest length possible to fit securely over both hubs.
•
Twist the trimmed flexible conduit onto the extra hub. Slide conduit and hub over wires of the SPD and twist the conduit onto the hub of the SPD.
•
Connect the extra hub to the panel and mount the SPD to the wall.
STEP 3:
Connecting “Optional Form C” Dry Relay Contacts (Applies only to SPDs with optional Dry Relay Contacts)
•
Make sure power is removed from surge suppressor.
•
Open surge suppressor lid and note encapsulant height prior to drilling or punching enclosure. (Allow internal clearance for locknuts).
•
Drill 0.5” diameter clearance hole through side, top or bottom of unit and install a watertight strain relief (i.e.: Altech #225-A00 (Part No. SR011).
•
NOTE:
Surge suppressor is equipped with two sets of contacts. The first set (labeled 1 & 2, N/C) is normally closed and the other set (labeled 3 & 4, N/O) is
normally open with power applied.
•
Contacts are rated at 60 W (from 30 VDC @ 2 A to 150 VDC @ 0.4 A) or 100 VA (from 50 VAC @ 2 A to 220 VAC @ 0.45 A).
•
Alarm contacts accept AWG #26 (0.14mm
2
) to AWG #16 (1.5mm
2
) wire. Wire size must be in compliance with NEC/CEC, State or Local codes for power on circuit.
Follow rules for the class of wiring used when routing alarm leads. To maintain NEMA-4 (IP66) rating use appropriate cable and watertight strain relief.
•
Connect alarm circuit(s) to Normally Open (N/O) or Normally Closed (N/C) terminals as required.
•
Upon replacing front cover of suppressor, certain models allow variour lid rotations (90° to 180°) for improved label orientation. (model specific)
STEP 4:
Wire the SPD into the Electrical System
•
Carefully lay out the wires keeping them as short and straight as possible. (Wires may be slow-twisted together thereby reducing RF-impedance.) After a satisfactory
layout has been made to the appropriate termination points as described below, cut the wires and connect them as instructed.
•
Connect the GREEN ground wire from the SPD to the system ground bus bar or to a lug mounted in the can or frame close to the SPD if the Ground bus bar is not
close following the current NEC/CEC.
Refer to earlier sections for systems utilizing an isolated ground.
•
Connect the phase wires or “hot” wires (see table above for wire colors) from the SPD to the phase conductors or buses of the electrical system through the required
circuit interrupts (fuses or breakers) described above. Note that the SPD has internal fusing and does not require external circuit interrupts (external fuses or
breakers). The Phase conductors may be directly connected to the phase conductors or buses after the main disconnect.
•
Upon replacing front cover of suppressor, certain models allow various lid rotations (90° or 180°) for improved label orientation (< model specific).
Before energizing, measure the voltage again to ensure it is within the levels in the table above.
Immediate failure of the SPD will occur if installed on voltages higher than shown in the Table at the top of this page.
STEP 5:
Apply Power to the Surge Suppressor
•
The LED should be illuminated. If not, remove power from the SPD and contact Surge Suppression, LLC, at: 1-(888)-987-8877.
