Transmittal of generator prepurchase specifications, March 1998

NYC 9/11 Public Portal Document

PPS-Generators

2. Malfunction detection system consisting of sensors within the load bank, load bank enable/disablf permissive circuit and alarms. Malfunction detection sensors to include; cooling air intake temperature switch set as recommended by manufacturer, exhaust air temperature switch set at no more than 40°F above the maximum rated temperature rise and an air pressure switch to sense for loss of cooling.airflow.

3. Remote load dump circuit to trip load bank off-line from remote contacts. A manual bypass switch shall be provided to override the remote contacts.

4. Input/output devices and control circuits for operation of load bank from remote devices when in "automatic" mode or "remote" mode.

5. Auxiliary dry contacts for field use to indicate load bank "operating normally" and "load bank failure".

6. Manual control panel consist of;

a. Mode selector switch to select the following: "Off", "Manual", "Remote."

b. Manual "run”, "stop" pushbuttons

c. Switch to bypass remote load dump contacts

d. Master load control switch

e. Load bank control switch; one for each load bank..

e. Load step control switches, one for each load step

7. Status annunciator with visual indicators for the following

a. Power connected to load bank

b. Load bank running in local-manual mode

c. Load bank running in remote mode

d. Remote load dump activated

e. Load dump bypassed

f. Load bank operating normally

OEM PPS-22 Generators 7 WTC March 20, 1998

NYC-WTC_000166897