Transmittal of generator prepurchase specifications, March 1998

NYC 9/11 Public Portal Document

PPS-Generators

b. An inphase monitor shall be provided for closed transition operation. The moritor shall control transfer/retransfer between live sources so that closure on the alternate source will occur only when the two sources are within 5 electrical degrees maximum, 5 % maximum voltage difference, and 0.2Hz.

c. Closed transition transfer shall be accomplished with no power interruption and without altering the or actively controlling standby generator set.

5. The automatic transfer/bypass isolation switches and accessories shall conform to the requirements of:

a. UL 1008 - Standard for Automatic Transfer Switches

b. NFPA 70 - National Electrical Code

c. NFPA 99 - Essential Electrical Systems for Health Care Facilities

d. NFPA 110 - Emergency and Standby Power Systems

e. IEEE Standard 446 - IEEE Recommended Practice for Emergency and Standby Power Systems for Commercial and Industrial Applications.

f. NEMA Standard ICS2-447 - AC Automatic Transfer Switches

g- IS09001

G. Transfer switches shall be as manufactured by Automatic Switch Company or Russ- electric. Any alternate shall be submitted to the consulting engineer in writing 10 days prior to bid. Each alternate bid must list any deviations from this specification.

2,10 GRAPHIC ANNUNCIATOR

A. Provide illuminated graphic mimic panel to show a system one-line including generators, generator switchgear, ATS’s, normal feeders and building secondary service switchboards. Provide led indicator for breaker status (open/closed), load shed, ATS position, generator shutdown and ATS (bypass position), utility, etc. Dry contacts shall be provided at the building switchgear and other locations.

B. Submittal shall include detail information as to size, construction, etc.

(1854.98\elec.pps)

OEM PPS-48 Generators 7 WTC March 20, 1998

NYC-WTC_000166923