GE Industrial Solutions Entellisys Installation - Manual (Page 16)

10
Entellisys Low Voltage Switchgear
Chapter 3. Description
3-3 Front Compartment Area
The front enclosure of each section is divided into individual
compartments.
These compartments typically house
EntelliGuard low voltage power circuit breakers or Entellisys
instrumentation.
3-4 EntelliGuard Messenger
An EntelliGuard Messenger is mounted above each
EntelliGuard breaker. The Messenger provides an interface
between the breaker, the compartment, and the central
Entellisys system. See DEH-231 (Entellisys Low Voltage
Switchgear System User’s Manual) for further instructions.
Each Entellisys low voltage switchgear lineup contains
standard devices housed within the instrument
compartments. Two CPUs (Central Processing Units) provide
the processing capability to support all switchgear functions.
At least one HMI (Human-Machine Interface) provides user
access to the Entellisys system. Network switches provide
communication links between the CPU, the HMI, the
EntelliGuard Messengers, and the external world. A pair of
uninterruptible power supplies (UPSs) and control power
throwover relays supply highly reliable control power to these
system devices.
Fig. 3-3. EntelliGuard Messenger