12.07.2015 Views

100+ page pdf - University of Iowa Hospitals and Clinics

100+ page pdf - University of Iowa Hospitals and Clinics

100+ page pdf - University of Iowa Hospitals and Clinics

SHOW MORE
SHOW LESS
  • No tags were found...

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

Rev. 9 December 15, 20127) Low battery voltage.8) High battery voltage.9) Low fuel supply.As an alternate to the Base Bid, the vendor shall provide monitoring <strong>of</strong> the compressedair storage tanks for low air pressure in lieu <strong>of</strong> low <strong>and</strong> high battery voltage.l. Sub-BaseThe engine generator unit shall be mounted on a full sub-base fabricated <strong>of</strong> structuralsteel with heavy cross members suitable for lifting. Spring type vibration isolators <strong>of</strong>the type <strong>and</strong> quality recommended by the manufacturer shall be supplied. Mountingholes for the isolators shall be located in the sub-base by the engine manufacturer toinsure equal distribution <strong>of</strong> weight on the isolators. Maximum vibration transmissionnot to exceed 6%.All service connections, fuel, water, electric, etc. to the engine shall be throughflexible connection devices. Vendor shall supply the flexible connection devices.m. Alternator & Exciter1) The alternator shall maintain continuously its specified fully derated output at 0.8power factor under the worst conditions stated in these specifications withoutexceeding 130° C temperature rise over listed engine room maximum ambienttemperature.2) The windings <strong>of</strong> the alternator <strong>and</strong> exciter shall be insulated with Class Finsulation suited for high humidity environment.3) The exciter shall be brushless direct connected type with shaft mounted diodes <strong>and</strong>built-in permanent magnets eliminating field flashing.n. AlternatorThe alternator shall be a multi-pole revolving field type with rotating brushless exciter<strong>and</strong> solid state regulator. The number <strong>of</strong> poles shall be compatible with 1200 or 1800rpm to provide a 60 Hertz output. The alternator shall be directly connected to theengine flywheel housing <strong>and</strong> driven by means <strong>of</strong> a multiple disc coupling from theflywheel. Voltage regulator shall be SCR static type with voltage adjustment rheostat<strong>and</strong> automatic subsynchronous speed protection. Voltage regulation shall be within±1% <strong>of</strong> rated voltage, from no load to full load. The transient voltage dip shall not begreater than 25% <strong>of</strong> rated voltage when full load at rated power factor is applied to thealternator.5

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!