Low Voltage Power and DC Circuit Breakers - GE Industrial Systems
Low Voltage Power and DC Circuit Breakers - GE Industrial Systems
Low Voltage Power and DC Circuit Breakers - GE Industrial Systems
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<strong>Low</strong> <strong>Voltage</strong> <strong>Power</strong> <strong>and</strong> <strong>DC</strong> <strong>Circuit</strong> <strong>Breakers</strong> Section 6<br />
WavePro <strong>Circuit</strong> <strong>Breakers</strong> with EntelliGuard ® TU, <strong>Power</strong>+, Enhanced<br />
MicroVersaTrip ® Plus <strong>and</strong> MicroVersaTrip ® PM Trip Unit <strong>Systems</strong><br />
There are four trip unit systems available for WavePro <strong>Low</strong><br />
<strong>Voltage</strong> <strong>Power</strong> <strong>Circuit</strong> <strong>Breakers</strong> — EntelliGuard ® TU, <strong>Power</strong>+,<br />
Enhanced MicroVersaTrip ® Plus <strong>and</strong> MicroVersaTrip ® PM. All four<br />
systems consist of the trip unit, the trip actuator, current sensors<br />
<strong>and</strong> rating plugs. The term “trip unit systems” applies to the<br />
combination of these four components, which form the circuit<br />
breaker solid-state tripping system.<br />
The EntelliGuard ® TU Trip Unit is the latest addition to the list of<br />
trip units available on <strong>GE</strong> low voltage power circuit breakers. The<br />
new functions offered by the trip unit enhance the WavePro<br />
breaker with Waveform Recognition Instantaneous which<br />
improves coordination with current limiting devices <strong>and</strong> reduces<br />
nuisance trips by discerning whether a downstream breaker/fuse<br />
is clearing the fault. The unit also provides optimum circuit safety<br />
<strong>and</strong> arc flash protection with the Reduced Energy Let Through,<br />
providing a faster instantaneous trip that may be used in case<br />
faster <strong>and</strong> more sensitive protection is temporarily required. Its<br />
Zone Selective Interlocking provides the ability to overlap the<br />
Instantaneous on the Main <strong>and</strong> Feeder breakers <strong>and</strong> the<br />
EntelliGuard ® TU also has Flexible Time Current Curves:<br />
44 Long Time Shapes (I 2 T <strong>and</strong> I 4 T (fuse)), 3 Short Time I 2 T slopes,<br />
Short Time adjustable in 55 msec increments <strong>and</strong> a Selective<br />
Ground Fault curve.<br />
All of the new functions <strong>and</strong> features in the new EntelliGuard ® TU<br />
trip unit provide ultimate system reliability <strong>and</strong> selectivity without<br />
sacrificing circuit protection.<br />
Designed for Flexibility<br />
—A wide range of continuous adjustment Long Time delays<br />
ensure the circuit breaker can be exactly dialed in to your<br />
selectivity <strong>and</strong> protection needs.<br />
—Multiple Short Time diagonal b<strong>and</strong>s tune your protection to<br />
exactly where it needs to be.<br />
—Flexible time current settings <strong>and</strong> curves — St<strong>and</strong>ard Long Time<br />
characteristics exactly mimic the curve of a thermal magnetic<br />
circuit breaker.<br />
—Flexible Time Current Curves: 44 Long Time Shapes (I2T <strong>and</strong> I4T (fuse)), 3 Short Time I2T slopes, Short Time adjustable in 55 msec<br />
increments, a Selective Ground Fault curve<br />
6-24<br />
BuyLog ® Catalog<br />
Instantaneous Protection<br />
—Instantaneous pick up is adjustable up to 15 times plug rating<br />
on every circuit breaker <strong>and</strong>, optionally, up to 30 times on some<br />
breakers.<br />
—A separately adjustable fast instantaneous trip — useful for<br />
when the circuit must provide the best possible protection <strong>and</strong><br />
arc flash performance while sustaining normal load<br />
—An override instantaneous provides fast tripping for the largest<br />
bolted fault currents to minimize potential damage.<br />
—Up to 17 Short Time b<strong>and</strong>s allow you to set your circuit breaker<br />
to sustain load requirements without slowing protection.<br />
—Ground Fault Alarm via I/O, or<br />
—Ground fault protection with faster time b<strong>and</strong>s, multiple slopes<br />
<strong>and</strong> the ability to coordinate a 1200A ground fault with an 800A<br />
circuit breaker — a ratio four times better than in previous<br />
generation trip units<br />
Maintenance <strong>and</strong> Diagnostics<br />
—Universal spare trip unit that will fit any <strong>GE</strong> circuit breaker<br />
—Universal trip plug fits any trip unit<br />
—Flexible serial communication via Modbus RTU<br />
—Integrates directly into <strong>GE</strong>’s EnerVista ® <strong>Power</strong> Management<br />
System<br />
—Health status via breaker LED indicating normal operation,<br />
errors, pickup, <strong>and</strong> trips while providing non-volatile memory<br />
with a continuous self-testing microprocessor<br />
—Lithium battery to eliminate need for external power<br />
—10 event Log with Date/Time Stamp: Stores the last 10 events.<br />
Date/Time with 24V<strong>DC</strong> <strong>Power</strong>.<br />
—Thermal Memory<br />
—WaveForm Capture: 40 Samples/Cycle, 4 cycles prior <strong>and</strong> 4<br />
cycles post event in COMTrade format<br />
—Large backlit LCD with detailed, easy to see descriptions<br />
www.geindustrial.com<br />
Rev. 9/12<br />
Prices <strong>and</strong> data subject<br />
to change without notice