GE Industrial Solutions Entellisys 5.0 User Manual - Manual (Page 27)

System components 27
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1.3.15 Remote HMI
The Entellisys system offers desktop access to the switchgear with the same HMI software
installed in the gear. The remote HMI software can be installed on any Windows 2000 desktop
computer and requires an intranet connection to the switchgear. The intranet connection is
connected to the system interface Ethernet switch.
Two versions of remote HMI are offered:
•
User Interactive
Permissions are programmable and can be set for full Administrator access down to Guest
access.
•
Viewer
Allows read-only access to the system.
1.3.16 VPN firewall device
Virtual Private Network (VPN) firewall device provides business-class network security providing
Denial of Service (DoS) protection and intrusion detection using Stateful Packet Inspection (SPI),
URL access and content filtering, logging, reporting, and real-time alerts. Up to eight users can
access the system simultaneously.
It is strongly recommended that anytime an Entellisys system is connected to the intranet, a
VPN firewall be installed to protect the Entellisys system from network threats.
For more information, see DEH-500 Entellisys Low Voltage Switchgear System Administrator
Manual.
1.3.17 Control power
Control Power is 120 Vac, 50 and 60 Hz only. Uninterruptible power is provided standard with
each system. The control power scheme is specific to each installation and constructed from
standard elements using defined practices for Entellisys control power distribution.
1.3.18 UPS
Two Universal Power Supplies are installed in the switchgear to provide backup power to the
control power network. The UPSs are powered from the primary power buses (utility or
generator) and are redundant.
The UPS serves all 120 Vac control power network devices. It does not power the charging
motors of electrically operated circuit breakers.
For more information on the Control Power Network, see Control power and UPS configuration
on page 225 .
For more information on the UPS, see the “GE Digital Energy GT Series™ - UL, Product
Description” at
www.gedigitalenergy.com .