Specifications

16201-5

L:\wpb_\wpb_emp1\W1200.13\p.m. Project #1\SECTION 16201-Indoor Generator and ATS.doc

B. The generator shall be capable of delivering rated output (kVA) at rated

frequency and power factor at any voltage not more than 5 percent above

or below rated voltage.

C. A permanent magnet generator (PMG) shall be included to provide a

reliable source of excitation power for optimum motor starting and short

circuit performance. The PMG and controls shall be capable of sustaining

and regulating current supplied to a single phase or three phase fault at

approximately 300% of rated current for not more than 10 seconds.

D. The subtransient reactance of the alternator shall not exceed 12 percent

based on the standby rating of the generator set.

E. Space Heater – Alternator shall be provided with 120V, 100W max. space

heater interlocked with generator run relay.

2.03 COOLING SYSTEM

A. Radiator – An engine mounted radiator with blower type fan shall be sized

to maintain safe operation at 122 degrees Fahrenheit maximum ambient

temperature.

B. The engine cooling system shall be pretreated by the Engine Supplier for

the inhibiting of internal corrosion.

C. The radiator shall exhaust through the building.

2.04 EXHAUST SYSTEM

A. The engine exhaust system shall be installed to discharge combustion

gases quickly and silently with minimum restriction. The exhaust system

including the generator exhaust silencer shall be designed for minimum

restriction and in no case shall the total exhaust system (including piping

system as installed) backpressure restriction imposed on the engine at full

operating load exceed the engine manufacturer’s maximum allowable

exhaust backpressure.

B. All exhaust piping shall be Schedule 40 heavy walled steel piping. The

generator exhaust muffler and all exhaust piping located within the

generator room shall be covered with appropriate insulation and shielding.

Piping shall be installed with 16 inches minimum clearance from

combustible materials.

C. The generator exhaust silencer shall be installed inside of the generator

room and exhaust piping terminated as shown on the Contract Drawings.

The exhaust silencer and associated piping shall be installation supported