Transmittal of generator prepurchase specifications, March 1998

NYC 9/11 Public Portal Document

P PS-Generators

Plug in, solid state time delays shall be provided for unloaded cooldown, adjustable from 0 to 15 minutes (factory set at 15 minutes). The cooldown time delay shall be adjustable from 1 to 3 minutes (factory set at 3 minutes) and automatically bypassed for malfunction and manual shutdown of the engine generator set. The failure to synchronize time delay shall be adjustable from 1 to 3 minutes (factory set at 3 minutes) and provide audible and visual indication but shall not terminate synchronizing attempts nor shut down the engine.

c. Engine Starting Control

The engine starting control logic shall be microprocessor based and shall automatically start, protect and monitor each engine generator set. Electro-Mechanical engine start controls are unacceptable. The engine starting control logic shall be capable of controlling engines furnished with the following:

1) Starting motor magnetic switch.

2) Electrically operated fuel control.

3) Normally open protective switches that close for abnormal conditions of pressure, temperature, speed and liquid level when required.

The engine starting control logic shall provide electrically isolated contacts for electronic governor control, electric fuel control, battery charger disconnect dining craning and common shutdown alarm annunciation. All relays shall be the same as interchangeable with, the relays specified in Generator Sensing Panel section.

1) Engine Start/Stop Operation

The automatic engine control logic shall initiate operation of the engine upon receipt of a signal from a contact which closes for engine run and opens for engine stop. Upon start of the engine, the engine control logic shall automatically disconnect the starting motor and prevent its reconnection until the engine has come to a complete rest.

OEM PPS-40 Generators 7 WTC March 20, 1998

NYC-WTC_000166915