Final_Revised_Specs.docx

SPECIFICATIONS

Generator & Automatic Transfer Switch (ATS) Upgrade

BACKGROUND:

The National Institute of Standards and Technology (NIST) maintains the standards for time and frequency for most users in the United States. NIST provides a variety of services designed to deliver time and frequency signals to the people who need them. The signals are broadcast via several mediums, including high and low frequency radio, the Internet, and telephones lines. These signals are used to synchronize millions of clocks every day, throughout the United States and around the world.

PURPOSE:

NIST Time and Frequency Radio Station WWV requires a new Emergency back-up generator and automatic transfer switch. The current generator and transfer switch has become unreliable. In case of loss of commercial power, the new units will supply standby power to the building and equipment. Our group depends on the standby emergency power to fulfill our mission. Equipment must be able to tolerate the unique pulsating load imposed by the WWV transmitters.

DELIVERABLES:

250 Kw diesel generator and a 1000 Amp automatic transfer switch.

One 250 Kw commercial standby generator set and installation:

a. Diesel powered

b. 120 / 208 Volt, 60 Hz, 3 phase, 3 wire

c. Meet size requirements 119” L X 50” W X 74” H.

d. The contractor shall remove existing Caterpillar Generator Model D343 Series A, Engine Serial No. 62B845

e. The Contractor shall properly dispose of old equipment.

f. The contractor shall install new generator

g. The Contractor shall remove and install units through an 8-foot high and 9-foot wide garage door

One 1000 AMP commercial power Transfer Switch and installation:

h. 120 / 208 Volt, 60 Hz, 3 phase, 3 wire

i. Meet size requirements 67” H X 30” W X 19” D

j. The contractor shall remove existing Electrical Equipment and Engineering Company custom-built switch. Switch is 36” deep, 45” wide, and 90” tall and weighs approximately 700 pounds.

k. The contractor shall install new transfer switch

TECHNICAL SPECIFICATIONS:

Generator and Transfer Switch purchase only:

A. Generator 250 Kw commercial standby gen set:

· Alternator shall be rated for 60 Hz, of the 12 Lead reconnectable type and include extended range and increased motor starting (IMS) capability. Due to the pulsating load, alternator must be sized such that temperature rise will not exceed 80 degrees C at 290 kW.

· Generator engine shall be capable of developing at least 450 HP at 1500 meters elevation, 40 degrees C ambient temperature

· Equipment shall meet NFPA 110 Level 1 requirements for single step load shifting

· Equipment shall include automatic remote starting and stopping capability

· Equipment shall include local controls for Generator Off, On, and automatic mode

· Equipment shall provide local display for fault history, start attempts/starts/hours, and load percentages

· Equipment shall include internal protection for overcurrent and short circuit events, phase fault, over- and under-voltage and frequency events, and shutdown for reverse power events

· Critical Muffler: Side Inlet End Outlet-6” ASA Flange

· The equipment shall include:

· User configured Genset status relays

· Low voltage terminal box

· 120 volt AC, Single Phase coolant heater

· Slip On exhaust connector

· Vibration Isolator: Seismic-2000LB Rated Load

· A remote annunciator/display

· 4” NPT to 6” ASA Conversion pipe package

· Factory Certified Test Record

· The contractor shall perform post-installation operational test including load bank test and certify that equipment is performing to specifications.

B. Transfer Switch 1000 AMP:

· Transfer switch must be from the same manufacturer as the generator and be fully compatible

· 3 Poles

· Auxiliary relay: Switch in emergency postion-24VDC

· Auxiliary relay: Switch in normal position-24VDC

· Clock-Exercise, External

· Cabinet-Type 1

TECHNICAL SPECIFICATIONS

Generator and Transfer Switch Installation

Contractor shall install new 250kW Generator and new compatible 1000-amp Transfer Switch.

· Coordinate complete job with Daniel Sokolowski and Radio Station Staff

· Unload the generator and transfer switch at job site located at: 5701 N HWY 1 Fort Collins Colorado, 80524

· Remove and properly dispose of old Generator and Transfer Switch

· Concrete saw larger hole for new generator exit cooling. The size of the exit cooling opening must meet manufacturer’s recommendations. The current exit cooling opening is in a wall made of eight-inch concrete cinder block.

· Run new electrical cable from electrical panels to Transfer Switch and back, based on manufactures recommendations and NEC codes.

· Run new control wire, based on manufactures recommendations and NEC codes.

· Install new Generator and Transfer Switch

· Secure Generator and Transfer Switch to Concrete floor, Core drill concrete

· Wire in the Generator, Transfer Switch and control wiring

· Connect Diesel fuel lines and exhaust pipe

· Confirm proper operation with Daniel Sokolowski and Radio Station Staff

· Due to space availability the new units will need to occupy the same foot print as the old units being removed. Therefore, the new units will need to be physically close to the same size as the old unit. Sizes noted under Deliverables

TECHNICAL CONSIDERATIONS:

No permitting is required. Work to be coordinated with station personnel and local utility if necessary.

GOVERNMENT FURNISHED PROPERTY OR INFORMATION:

N/A

DELIVERABLE SCHEDULE:

8 weeks after receipt of the order (ARO) for equipment delivery and 60 – 90 days for installation.

INSPECTION AND ACCEPTANCE:

The acceptable equipment shall meet all technical specifications. Installation shall meet all required electrical, building, and Government Codes. Final inspection will be conducted by the NIST EMSS Department within two weeks after project is complete.

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