Low Voltage Power and DC Circuit Breakers - GE Industrial Systems

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Low Voltage Power and DC Circuit Breakers Section 6 WavePro Circuit Breakers with EntelliGuard ® TU, Power+, Enhanced MicroVersaTrip ® Plus and MicroVersaTrip ® PM Trip Unit Systems There are four trip unit systems available for WavePro Low Voltage Power Circuit Breakers — EntelliGuard ® TU, Power+, Enhanced MicroVersaTrip ® Plus and MicroVersaTrip ® PM. All four systems consist of the trip unit, the trip actuator, current sensors and rating plugs. The term “trip unit systems” applies to the combination of these four components, which form the circuit breaker solid-state tripping system. The EntelliGuard ® TU Trip Unit is the latest addition to the list of trip units available on GE low voltage power circuit breakers. The new functions offered by the trip unit enhance the WavePro breaker with Waveform Recognition Instantaneous which improves coordination with current limiting devices and reduces nuisance trips by discerning whether a downstream breaker/fuse is clearing the fault. The unit also provides optimum circuit safety and arc flash protection with the Reduced Energy Let Through, providing a faster instantaneous trip that may be used in case faster and more sensitive protection is temporarily required. Its Zone Selective Interlocking provides the ability to overlap the Instantaneous on the Main and Feeder breakers and the EntelliGuard ® TU also has Flexible Time Current Curves: 44 Long Time Shapes (I 2 T and I 4 T (fuse)), 3 Short Time I 2 T slopes, Short Time adjustable in 55 msec increments and a Selective Ground Fault curve. All of the new functions and features in the new EntelliGuard ® TU trip unit provide ultimate system reliability and selectivity without sacrificing circuit protection. Designed for Flexibility —A wide range of continuous adjustment Long Time delays ensure the circuit breaker can be exactly dialed in to your selectivity and protection needs. —Multiple Short Time diagonal bands tune your protection to exactly where it needs to be. —Flexible time current settings and curves — Standard Long Time characteristics exactly mimic the curve of a thermal magnetic circuit breaker. —Flexible Time Current Curves: 44 Long Time Shapes (I2T and I4T (fuse)), 3 Short Time I2T slopes, Short Time adjustable in 55 msec increments, a Selective Ground Fault curve 6-24 BuyLog ® Catalog Instantaneous Protection —Instantaneous pick up is adjustable up to 15 times plug rating on every circuit breaker and, optionally, up to 30 times on some breakers. —A separately adjustable fast instantaneous trip — useful for when the circuit must provide the best possible protection and arc flash performance while sustaining normal load —An override instantaneous provides fast tripping for the largest bolted fault currents to minimize potential damage. —Up to 17 Short Time bands allow you to set your circuit breaker to sustain load requirements without slowing protection. —Ground Fault Alarm via I/O, or —Ground fault protection with faster time bands, multiple slopes and the ability to coordinate a 1200A ground fault with an 800A circuit breaker — a ratio four times better than in previous generation trip units Maintenance and Diagnostics —Universal spare trip unit that will fit any GE circuit breaker —Universal trip plug fits any trip unit —Flexible serial communication via Modbus RTU —Integrates directly into GE’s EnerVista ® Power Management System —Health status via breaker LED indicating normal operation, errors, pickup, and trips while providing non-volatile memory with a continuous self-testing microprocessor —Lithium battery to eliminate need for external power —10 event Log with Date/Time Stamp: Stores the last 10 events. Date/Time with 24VDC Power. —Thermal Memory —WaveForm Capture: 40 Samples/Cycle, 4 cycles prior and 4 cycles post event in COMTrade format —Large backlit LCD with detailed, easy to see descriptions www.geindustrial.com Rev. 9/12 Prices and data subject to change without notice
Low Voltage Power and DC Circuit Breakers Section 6 WavePro Circuit Breakers with EntelliGuard ® TU, Power+, Enhanced MicroVersaTrip ® Plus and MicroVersaTrip ® PM Trip Unit Systems The Power+ trip unit continues to use GE’s proven technique of measuring true rms currents of both sinusoidal and harmonically distorted waveforms. The frequent sampling (48 times per cycle per phase) allows precise calculations of true rms current. The sampling rate allows waveform measurements up to the 11th harmonic. True rms sensing avoids potential under- or over-protection problems associated with peak-sensing tripping systems. The Power+ trip unit is identified by its plug-in modules and rotary switches. The optional “target module” provides LED targets for overload, short circuit and ground fault trips. View and Reset push buttons are also provided to monitor status, including a battery check LED. Standard 3-volt lithium batteries in the target module power the indicating LEDs (batteries are not required for trip unit operation). The “rating plug module” serves the dual purpose of establishing the trip rating for the circuit breaker as well as providing ground fault protection when required. All pickup and delay settings are selected with detented rotary switches. Enhanced MicroVersaTrip ® Plus and MicroVersaTrip ® PM trip units also measure true rms currents (and voltages for MicroVersaTrip ® PM trip units). The higher sampling rate (64 times per cycle) allows waveform measurements up to the 31st harmonic to achieve accuracy of 99%. MicroVersaTrip ® Plus and MicroVersaTrip ® PM trip units contain a digital liquid crystal display with a five-button keypad for local setup and readout of trip settings. The trip units have a lithium battery for cold setup capability and viewing of targets without external power. The LCD and keypad also provide a three-phase ammeter and trip indicators. The Enhanced MicroVersaTrip ® (MVT) PM trip unit adds power management system capability, including advanced metering and protective relaying, to the basic functions of the MVT Plus. The MVT PM can be interfaced with either Modbus RTU or Ethernet TCP/IP compatible systems. All trip units utilize a series of interchangeable rating plugs to establish the current rating of the breaker. Rev. 9/12 Prices and data subject to change without notice Standard Functions: —Rating plug with test port Protection —Long-time, Instantaneous (Instantaneous may be omitted when short-time is provided) Optional Functions: Protection —Short-time protection, with selectable l 2 t —Ground fault protection, with selectable l 2 t —Defeatable ground fault (not UL) Target Module —View and Reset buttons —Battery check LED —Longtime pickup/trip unit “health” LED —LEDs for overload, short circuit, ground fault trips Standard Functions: —Rating plug with test port Protection —Long-time, Instantaneous (Instantaneous may be omitted when short-time is provided) Status —Trip target (trip type) —Trip information (magnitude and phase) —Trip operations counters Metering Display —Phase current (selectable among phases) Optional Functions: —Short-time protection, with selectable l 2 t —Ground fault protection, with selectable l 2 t —Defeatable ground fault (not UL) —Switchable instantaneous/short-time and ground fault (not UL). —Zone-selective interlock, for ground fault only or for both ground fault and short-time protection. Additional Functions available only with MicroVersaTrip ® PM trip unit: —Communication and metering (M-option) —Communication, metering and protective relaying (PM-option) Communication: —Remote communication with POWER LEADER ® Power Management Control System (PMCS) software Metering: —Voltage (V), Energy (kWh/MWh/GWh) —Real Power (kW/MW), Total Power (kVA/MVA) —Demand Power (kW/MW), Peak demand power (kW/MW) —Frequency (Hz) Protective Relaying: —Undervoltage, Overvoltage —Voltage unbalance, Current unbalance, Power reversal www.geindustrial.com BuyLog ® Catalog 6-25
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Low Voltage Power and DC Circuit Breakers - GE Industrial Systems

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