Specification for GE Magne-Blast Type AM Circuit Breakers
Specification for GE Magne-Blast Type AM Circuit Breakers
Specification for GE Magne-Blast Type AM Circuit Breakers
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<strong>Specification</strong> <strong>for</strong><strong>GE</strong> <strong>Magne</strong>-<strong>Blast</strong> <strong>Type</strong> <strong>AM</strong><strong>Circuit</strong> <strong>Breakers</strong>Powell Apparatus Service8550 Mosley Dr.Houston, TX 77075(713) 944-6900 - p(713) 948-4569 - fIEEE C37.09-1979 (Reaff 1988), An American National Standard - IEEE Standard Test Procedure<strong>for</strong> AC High-Voltage <strong>Circuit</strong> <strong>Breakers</strong> Rated on Symmetrical Current Basis (ANSI)IEEE C37.59-1991 IEEE Standard Requirements <strong>for</strong> Conversion of Power Switchgear Equipment(ANSI)UL 44 1983 Rubber-Insulated Wire and CableIn the event of conflict between this specification and referenced standards, Seller shall referthe conflict to Purchaser <strong>for</strong> written resolution.TECHNICAL REQUIREMENTSPer<strong>for</strong>mance CriteriaThe new circuit breakers shall utilize vacuum interrupters having a 3 or 5 cycle interruptingtime. The vacuum interrupters shall have a current chop rating of less than 5 amps.Vacuum interrupters utilizing the vacuum tube pinching sealing technique are notacceptable.The new circuit breakers rated maximum voltage, rated continuous current, and rated shortcircuitcurrent shall, as a minimum, meet the requirements of ANSI C37.04 and C37.06.New circuit breaker frames, circuit breaker disconnects, interlocks, and ancillary devicesshall be compatible with the existing switchgear. New circuit breakers shall be designed<strong>for</strong> operation in the medium voltage metal-clad switchgear from which the original circuitbreakers have been removed without alteration of the existing switchgear assembly. Theonly case where cell modification would be acceptable would be when existing solenoidoperated, <strong>GE</strong> type <strong>AM</strong> breakers were being replaced. If solenoid operated breakers arebeing replaced a spring discharge cam, as required by ANSI, must be mounted in teh existingswitchgear enclosure. The seller shall furnish this discharge cam with the replacementbreakers.New <strong>Circuit</strong> breakers shall be suitable <strong>for</strong> reliable service under the specified operatingconditions <strong>for</strong> a minimum design life of 25 years.©2004 Powell Apparatus Service • All rights reserved.
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