GE Industrial Solutions Zenith - Energy Commander Paralleling Switchgear (PSG) - Manual (Page 6)

PB -2102 • Page 6
Emergency or Standby Power
> Features
The emergency system is used to supply power
to building loads during a power failure.
Paralleling switchgear controls the system
transfer to generators and return back to
normal sequences of operations.
Paralleling switchgear controls the addition of
load on/off generators (load add/shed).
Transfers between utilities and generators occur
in open transition or passive momentary closed
transition (no active synchronization of sources).
> Components
System typically consists of paralleling switchgear
product and automatic transfer switches of which
GE has a wide variety for many applications.
Generator Generator
Loads
Utility
ATS
Loads
ATS
Utility
Prime Power
> Features
On-site prime power systems are most often used
where there is no utility source available.
The required electricity is generated entirely on-site,
typically at facilities such as island resorts, mines,
mills or other remote locations.
Since utility is not available in prime power systems,
ATS ’s/ ATO ’s and utility/tie breakers are not required.
> Components
Generators are the only source of power. The system
typically consists of
PSG product with no ATS / ATO
products.
Generator Generator
Loads Loads
System Applications
> Con
figuration Example
> Con figuration Example