Siemens Surge Protective Device TPS3 09 - Manual (Page 6)

Dry Contact Leads
Power Leads
Blue
Grey Red
Connecting Optional Form C Dry Contact & Audible Alarm
(“D” suffix near end of model number)
Three (3) 3’ (~1m) 18 AWG wires are included through the nipple with
this option. (These are smaller than the 10 AWG SPD conductors.)
Gray is Common, Red is Normally Open and Blue is Normally Closed.
(We generally recommend the Normally Closed configuration because
it detects disconnected or failed wiring whereas normally open does
not.)
If the dry contacts are not utilized, insulate lead ends, coil and secure.
Audible alarm will still function correctly.
The contact is rated 250V, 5A. Higher energy applications require
supplemental relaying. This option monitors suppression element
condition and is not intended for use as phase loss or phase detection
monitoring.
Normal Operation
Green LED Indicators
Each phase’s LED Indicator illuminates when the SPD is energized
and operating correctly. Every suppression element is monitored and
connected by logic to the LED. Should any suppression element fail,
the green LED will extinguish.
Form C Dry Contact and Audible Alarm Option
Similar to the Green LEDs above, the dry contact will change state and
the audible alarm will sound upon suppression element failure. The
audible alarm may be silenced by removing power to the SPD.
Figure 6: Dry Contact
• Normally Closed (suggested):
Use Gray and Blue
• Normally Open:
Use Gray and Red
Blue Normally Closed
Gray Common
Red Normally Opened
CONNECTING TO OPTIONAL REMOTE INDICATOR IF EQUIPPED
(“E” 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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