Technical Specifications

ManualsBrandsEmerson Manualselectrical equipment & supplies185SE

ASCO Power Technologies, Florham Park, New Jersey 07932 800-937-ASCO www.ascopower.com

01-2009

1 Publication 3208

SUGGESTED SPECIFICATION

for

Series 185 Service Entrance Rated Automatic Transfer Switches

Optional Standby Power Generator Systems

PART 1 GENERAL

1.01 Scope

A. Furnish and install automatic transfer switches (ATS) with number of poles,

amperage, voltage, and withstand and close-on current ratings as shown on the

plans. Each automatic transfer shall consist of an inherently double throw power

transfer switch unit and a microprocessor controller, interconnected to provide

complete automatic operation. All transfer switches and controllers shall be the

product of the same manufacturer.

B. Furnish an enclosure for the ATS that is for service entry. It shall provide all of the

proper disconnecting, protection, grounding and bonding required for service

entrance equipment.

1.02 Acceptable Manufacturers

Service Entrance Automatic transfer switches shall be ASCO Series 185SE. Any

alternate shall be submitted in writing at least 10 days prior to bid. Each alternate bid

must list any deviations from the specification.

1.03 Codes and Standards

The automatic transfer switches and controls shall conform to the requirements of:

A. UL 1008 - Standard for Automatic Transfer Switches

B. CSA – Listed to CSA 22.2

C. NFPA 70 - National Electrical Code

D. International Standards Organization ISO 9001: 2000

E. UL 508 Industrial Control Equipment

F. IEC 947-6-1 Automatic Transfer Switches

G. NEMA Standard ICS 10 Standard for Automatic Transfer Switches

Summary of content (5 pages)

PAGE 1
SUGGESTED SPECIFICATION for Series 185 Service Entrance Rated Automatic Transfer Switches Optional Standby Power Generator Systems PART 1 GENERAL 1.01 Scope A. Furnish and install automatic transfer switches (ATS) with number of poles, amperage, voltage, and withstand and close-on current ratings as shown on the plans. Each automatic transfer shall consist of an inherently double throw power transfer switch unit and a microprocessor controller, interconnected to provide complete automatic operation.
PAGE 2
PART 2 PRODUCTS 2.01 Mechanically Held Transfer Switch A. The transfer switch unit shall be electrically operated and mechanically held. The electrical operator shall be a momentarily energized, single-solenoid mechanism. Main operators which include overcurrent disconnect devices, or linear motors shall not be acceptable. The switch shall be mechanically interlocked to ensure only two possible positions, normal or emergency. B.
PAGE 3
2.03 Enclosure A. The ATS shall be furnished in a NEMA type 1 enclosure with a hinged door unless otherwise shown on the plans. B. Type 3R outdoor enclosures shall include a hinged door and shall be fabricated of an aluminum alloy to resist corrosion. C. Mounting for an optional strip heater with thermostat for Type 3R enclosure requirements shall be provided. D. Controller shall be a flush-mounted display with LED indicators for switch position, source availability, and for engine exerciser.
PAGE 4
PART 3 OPERATION 3.01 Voltage and Frequency Sensing A. The operating frequency shall be set at 60Hz nominal, with the option to change operating frequency to 50Hz. B. The voltage of each phase of the normal source shall be monitored, with pickup (source acceptable) set at 198 volts, and dropout (source unacceptable) set at 187 volts. The option to change pickup to 209 volts, and to change dropout to 198, 176, or 154 volts, shall be available. C.
PAGE 5
PART 4 ADDITIONAL REQUIREMENTS 4.01 Withstand and Closing Ratings A. The ATS shall be rated to close on and withstand the available RMS symmetrical short circuit current at the ATS terminals with the type of overcurrent protection shown on the plans. B. WCR ATS ratings to be as follows when used with any molded case circuit breaker: ATS Size 200 – 225 400 Withstand & Closing Rating MCCB 10,000A 42,000A1 1 4.02 W/CLF 200,000 200,000 Specific breaker rating Tests and Certification A.