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CONNECTING TO OPTIONAL DRY CONTACTS IF EQUIPPED
("D" SUFFIX NEAR END OF MODEL NUMBER)
The Dry Contact option allows for external evaluation of the
SPD's operating condition. A Form C contact changes state
during inoperative conditions, including loss of power, either
in full, or loss of any individual phase. This can be configured
for either Normally Open, or Normally Closed indication.
Connections are made via two of the three 18 AWG wires, pre-
wired through the SPD's nipple mounting connection. There is
no terminal block connection (ensures cost-effective NEMA 4X
compliance). Dry Contact wires are color coded per below and
are approximately 5 feet (1.5m) in length. Do not mistake the
SPD power connection conductors for the Dry Contact wires.
Internal electrical contacts are rated 5A, 120 VAC.
Color code of Dry Contact wires when energized:
• 18 AWG RED - Normally Closed
• 18 AWG GREY - Common
• 18 AWG BLUE - Normally Open
Typical Installation:
• For Normally Closed: Use Red and Grey wires
• For Normally Open: Use Blue and Grey wires
After installation, contacts can be tested by energizing, then
deenergizing the SPD, and verifying that contacts change state.
An alternate test is to deenergize just one phase.
WARNING
V
• Confirm XO N-G Bonding at Upstream Transformer
• Do Not Hi-Pot Test TVSS
• Resulting Damage is Not Covered Under Warranty
Page 4
CONNECTING TO OPTIONAL REMOTE INDICATOR IF EQUIPPED
("R" SUFFIX NEAR END OF MODEL NUMBER)
This option includes a supplemental diagnostic LED that can be
mounted in a conspicuous location. For example, assume that
the SPD is mounted such that it is not readily visible. A Remote
Indicator can provide visual indication of correct operation.
Operation is straightforward: Green LED On = SPD is OK. If the
LED is out, the SPD has failed; power is not present, or one or
more phases are not energized.
The Green LED assembly includes two pre-attached wires and
two butt-splice connectors. The SPD includes two yellow 18 AWG
wired, pre-wired through the SPD's nipple mounting connection.
Pre-Plan the installation per normal Installation Instructions.
Note that the LED assembly and butt-splice connectors are not
weather resistant and should be protected accordingly.
Mount the LED assembly in an appropriate conspicuous location.
Drill a 1/4" diameter hole at the mounting location. Remove the
hex nut from the back side of the LED assembly and feed the
LED indicator wires through the hole. Install the hex nut.
Butt-splice the wires (polarity does not matter) from the LED
wiring assembly to the yellow SPD wires by inserting one end of
each LED wiring assembly lead into the butt-splice (supplied).
Squeeze the metal contact of the butt-splice downward. Ensure
the wires cannot be pulled out of the butt-splice. Fold the cover
of the butt-splice over the metal contact until the cover of the
butt-splice latches to the bottom portion of the butt-splice.
The enclosed label should be placed under the LED for reference.
Plan your installation for adequate label space.
After installation, test the Green LED by energizing, then
deenergizing the SPD, and verifying that the LED turns on and
off appropriately. An alternate test is to deenergize just one
phase.
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