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DGS1Ac Generator Starter
477 $CA

Basic Operation

This Genset starter monitors the battery voltage, and when the battery voltage gets too its low setpoint, the unit starts the generator. When the battery gets to its high setpoint, the unit stops the generator. The generator may be remotely started and stopped by dry contact closures, or by its local toggle switch start stop commands. The setpoints may be temperature compensated with an optional remote temperature sensor.

Available in Model (GS-1AC) optimized for starting AC generators or Model (GS-1DC) for DC generators. This product is available in an enclosure or open frame design for mount in your own enclosure.


  • Single unit 12 V up to 48 V battery systems
  • LEDs indicate relay positions and generator status
  • Temperature compensation (-4 mv / deg C./ cell) on start and stop voltages with optional temperature sensor TC-2
  • remote start and stop controls as well as local start/stop control
  • 5 second retirggerable time delay on voltage sensing to prevent false starts/stops
  • Supports 2, 3 and 4 wire systems as well as advanced control systems
  • Low Cost/ High Reliability

Electrical Specifications

  • Base Model: GS-1
  • Nominal battery voltages 12 - 48 V DC
  • Maximum Input (V) 63
  • Minimum Voltage 10
  • Relay: 8 amps @ 12/24 V , 2 amp @ 48 V , 5 amps @ 120 VAC rating of Potter and Brumfield T72 series relay
  • Self Consumption (A)
  • Relay Power: 0.5W per relay coil when powered, voltage independent
  • Quiescent less than 20 mA,Fusing 1 A, internal electronics only

Sequence of Operation on Startup

When the battery voltage is detected as too low per user adjustable setpoint the generator goes through its start sequence.

1.     The Generator start LED comes on.

2.     Precrank: 20 seconds relay closure (with LED on) prior to generator start/crank.

3.     Crank: relay closure (with LED on) for 10 seconds or until Genset start detected defined by generator/battery voltage starting to rise.

4.     Run: Relay closure (with LED on) whenever generator is cranking or running.

5.     Load: load relay closure (with LED on) for 30 seconds after run relay closure.

6.     If battery voltage falls another 0.2 V (relative to 12 V battery), fault relay is activated for remote signaling of fault.




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296 $CA
222 $CA