Transmittal of generator prepurchase specifications, March 1998

NYC 9/11 Public Portal Document

PPS-Generators

5. Controls which initiate up to 30 seconds of cranking in response to signals from automatic transfer switch cranking contacts, and then lock out to prevent further cranking (until manually reset) in the event the engine has failed to start. Also include switching provisions at the generator control switchgear to permit testing of the cranking sequence by simulating voltage failure. Also include "Emergency Generator Manual Start" switching provisions, located where directed, together with 2 #14 runs (in raceway) to the engine control panel, and connected so as to enable manual generator start-up by simulating voltage failure.

6. Controls which cause generator shutdown after normal source voltage on all phases of all services has been restored (to at least 90% of the average maintained normal value) for an adjustable period of from 1 to 30 minutes.

7. Modifications necessary for operation with No. 2 fuel oil.

8. Automatic float type battery charger. Charger shall be AC line compensated and current limited with fused input and output, and with complete isolation between input and output. It shall be complete with DC ammeter and voltmeter and combination high/low battery voltage alarm contact. Minimum charging rate shall be 10 amps at 24VDC.

9. Integrally factory-mounted lube oil pressure and jacket water temperature gauges and running time meter, together with sensors and other devices necessary for the complete and proper inspection, surveillance during operation, care and main­ tenance of engine. Sensors shall be as required to provide "pre-alarm" and "alarm" warnings as called for in the annunciator panel described hereinafter, and shall each be wired to readily accessible terminals on die engine.

10. An annunciator panel of the manual reset type, installed, in the generator control switchgear, to signal audibly, and to identify visually, any of the "pre-alarm" or "actual alarm" conditions described hereinafter, as well as an engine shutdown device to operate in response to any of the "actual alarm" conditions. The annunciator shall be complete with silencing switch and "alarm silenced" pilot light, and master relay with N.O. and N.C. contact for signaling engine shutdown to external alarm system and shall indicate the following:-

a. Low jacket water temperature - pre-alarm.

b. High jacket water temperature — pre-alarm.

c. Low lube oil pressure — pre alarm.

OEM PPS-12 Generators 7 WTC March 20, 1998

NYC-WTC_000166887