GE Industrial Solutions Entellisys 4.0 System User Manual - Manual (Page 15)

System components 15
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1.3 System components
Following are brief descriptions of each component in the Entellisys system.
1.3.1 EntelliGuard circuit breaker
EntelliGuard low-voltage power circuit breakers control and protect power circuits up to
600 volts. They will safely switch loads and automatically clear circuits when abnormal
conditions occur. These include short circuits, sustained overloads, ground faults, and other
programmable conditions.
The EntelliGuard circuit breakers are available in 800 ampere, 1,600 ampere, 2,000 ampere,
3,200 ampere, 4,000 ampere, and 5,000 ampere frame sizes. These values represent the
maximum continuous-current rating of each frame.
Circuit breakers may be equipped with a combination of accessories and interlocking devices.
Figure 1-3 EntelliGuard small frame circuit breaker
• The network interlock accessory selectively prevents the closing of specific circuit
breakers in the electrical distribution network. The CPU sets and resets network interlock
devices remotely while continuously monitoring their status. For example, in a
double-ended substation, these devices could be used to interlock the main and tie
circuit breakers to prevent connecting two unsynchronized power sources.
• The bell alarm lockout accessory prevents a circuit breaker from closing after receiving
a trip command from the EntelliGuard Messenger. Closing of the circuit breaker is
permitted only after the lockout is reset manually at the front of the circuit breaker.
For more information, see the following EntelliGuard Circuit Breaker Instruction Books:
•
DEH-201 EntelliGuard Power Circuit Breakers 800-2,000A Frames, 240-600Vac Users Guide
•
DEH-202 EntelliGuard Power Circuit Breakers 3,200-5,000A Frames, 240-600Vac Users Guide