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2199 Grand Narrows Highway
Nova Scotia, Nova Scotia-B1Y-3P1, Canada+(1)-902-8712008
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Automatic Transfer Switches

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FEATURES The AST 3225 Auto-Start Transfer Switch System, CSA/UL Approved, provides an automatic transfer of an electrical load to a stand-by power supply in the event of a drop, or loss of voltage, on any or all phases of the normal power supply. Upon the restoration of normal power, the electrical load is automatically re-transferred to the normal power supply. The base unit comes complete with an ES-53 Controller, which starts the engine automatically and provides the necessary timing functions. All time delays are built into the ES-53, and are fixed to simplify installation, start-up, and field servicing. Included are the following timers: TDES (Time Delay Engine Start): Adjustable from 0-32 seconds. This delay is necessary to prevent unnecessary engine starts. This delay also doubles as a preheat timer utilizing terminal 12 for diesel glow-plugs, if necessary. TDNE (Time Delay Normal to Emergency): 4 seconds. This allows the engine to stabilize before load transfer. TDEN (Time Delay Emergency to Normal): 3 minutes. This allows a delay after the utility returns, to ensure it has indeed returned and stabilized. TDEC (Time Delay Engine Cool): 5 minutes. This allows the engine to continue running for a set time after transfer of the load back to the utility, to circulate coolant for a safe cool-down. Engine Exerciser: Automatically starts the engine and runs it in the unloaded condition for the desired exercise time

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