Low Voltage Power and DC Circuit Breakers - GE Industrial Systems

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
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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