Low Voltage Power and DC Circuit Breakers - GE Industrial Systems

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Low Voltage Power and DC Circuit Breakers Section 6 EntelliGuard ® G Low Voltage Power Circuit Breaker Overview and Functions EntelliGuard ® G Circuit Breakers EntelliGuard ® G Circuit Breakers are the newest top of the line circuit breakers designed to meet the demands of today’s electrical distribution systems by providing ultimate system performance without sacrificing safety or reliability. EntelliGuard ® G devices are available in standard, 100% rated, ANSI/UL1066, UL489 and IEC ratings. Breakers are offered to OEMs in 3 and 4 pole designs from 400A to 600A (IEC) with fault interruption ratings up to 150kA and many field-installable accessories. EntelliGuard ® G 3-pole breakers are the standard in GE AKD-20 Low Voltage Switchgear suitable for 280Vac and 600Vac. The breakers are suitable for 280Vac, 480Vac and 600Vac applications, and they provide advanced circuit protection, limit arc fault energy and preserve system coordination without sacrificing any of these critical functions. Standard Functions The EntelliGuard ® G Circuit Breakers offer operational safety with functions such as: Closing and opening - can be initiated remotely or via the front cover push buttons. An Open-Close-Open cycle is possible without recharging. Breaker/Main Contact Status - OPEN/CLOSED, ON/OFF indication is provided on the front cover. Through-Door Racking - The breaker racking mechanism is accessible through the front door and permits safely disconnecting/withdrawing the circuit breaker without opening the door and exposing personnel to live parts during the process. Ready to Close Indicator - Provides visible indication/readiness for close operation. Breaker Status Indicators - Standard Indicators include: —The breaker status indicator shows the condition of the main contacts (OPEN, CLOSED). —The status of the closing springs is indicated as CHARGED or DISCHARGED. —The draw-out position indicator displays whether the breaker is in the CONNECT, TEST or DISCONNECT position. —The breaker also includes a switch that provides main contact status indication to the POWER LEADER Power Management System. —The optional Reduced Energy Let-Through (RELT) is provided with an ON/OFF contact closure to positively indicate whether the RELT setting is enabled or not. Rejection Feature - A factory-installed rejection feature prevents mismatching breakers and cassettes/substructures. EntelliGuard ® G breakers are designed for flexibility and superiority with functions such as: Short Time Rating - Up to 100kA for 1/2sec. Short Circuit/High Interruption Rating - 150kA at 600V, 100kA at 690V. 6-2 BuyLog ® Catalog Two-Step Stored Energy Mechanism - Breaker operates via stored energy mechanisms that can be manually charged (MO) or electrically charged (EO) by the Spring Charging Motor. Closing time is less than five cycles. Reverse Feed – EntelliGuard ® G devices can be fed from top or bottom terminals. Coils - EntelliGuard ® G devices have provisions for four accessory operating coils. The four positions can be filled by the following four devices: one Close Coil (CC or CCC), one Shunt Trip Coil, one UVR (Under Voltage Release), and the fourth position can either be a Shunt Trip Coil or a UVR. Motor Operator Heavy Duty, Motor/Gearbox Unit - easily accessible. Interlocks - Standard interlocks include: —Drawout Breaker —Drawout Breaker/Main Contacts —Spring Discharge Interlock Padlocking Devices - The padlocking device is standard on breakers and allows up to three padlocks with 1/4" to 3/8" diameter shanks to secure the breaker in the OPEN/TRIP FREE position. Thermal Performance - ANSI C37 and UL 489 designs are 100% rated up to 40ºC when applied in recommended enclosure sizes. IEC 60947 versions are 100% rated in free air up to 50ºC. IP31 enclosure/switchboard rating is based on size, recommended up to 50ºC ambient with rear vertical bus connection. Field Installable Trip Units and Accessories Field - installable accessories are common to all breaker envelopes and frames. www.geindustrial.com Rev. 9/12 Prices and data subject to change without notice
Low Voltage Power and DC Circuit Breakers EntelliGuard ® G Low Voltage Power Circuit Breaker Functions Optional Functions EntelliGuard ® G Circuit Breakers offer many optional functions in order to enhance and facilitate the use of the circuit breaker. Those functions include: Auxiliary Switches - (Optional) Four available designs: —Power rated (3NO+3NC) —Power rated (3NO+3NC) + low signal (Hi-Fi) (2NO+2NC) —Power rated (8NO+8NC) —Power rated (4NO+4NC) + low signal (Hi-Fi) (4NO+4NC) Key Interlock - Up to four optional key interlocks are available (Kirk, Ronis, Profalux, Castell). Switchgear applications utilize a Kirk key interlock mounted in the cassette. A maximum of two key interlocks may fit in the cassette. Mounting Straps/Accessories Kits - are available to mount and connect fixed/stationary breakers. Shutters Optional Lockable Shutters - are available (factory installed). Carriage Position Switch - This optional cassette/substructure device permits local or remote indication of the circuit breaker status (CONNECTED, TEST, DISCONNECTED), 2NO/2NC single pole, double throw contacts are available for each position. Lifting Truck - Optional lifting tool with separate slings is available for all breaker sizes. Optional IP Covers - IP54 covers (protected against harmful amounts of dust and splashing water) are available for all breaker sizes. Mechanical Counter - Provides local record of the cumulative number of complete breaker closing operations. Cable Interlocks - (OEM Applications Only) Available for fixed and draw-out breakers, these units enable direct interlocking of EntelliGuard ® G circuit breakers. Bell Alarm Contact - Available with or without a mechanical lockout feature, the bell alarm operates when the trip unit issues a trip command. Rev. 9/12 Prices and data subject to change without notice Section 6 www.geindustrial.com BuyLog ® Catalog 6-3
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Low Voltage Power and DC Circuit Breakers - GE Industrial Systems

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