Siemens TPS3 09 user manual Blue Normally Closed Gray Common Red Normally Opened

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.

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

Figure 6: Dry Contact

•Normally Closed (suggested): Use Gray and Blue

•Normally Open: Use Gray and Red

Power Leads

Blue	Normally Closed
Gray	Common
Red	Normally Opened

Dry Contact Leads

Blue

Grey Red

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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