InteliATS
NT
PWR, SW version 2.5, ©ComAp
– May 2015
29
IA-NT- PWR-2.5-Reference Guide.pdf
Applications
The most typical application for the ATS controllers is Auto Mains Failure (AMF) application, where the
controller watches for the mains power supply fault and then starts a load transfer process.
Next possible application is manually controlled load transfer between two power supply sources
(mains x generator).
AMF using two separate breakers with feedbacks (MCB and GCB)
G
IA-NT
GCB
3x
LOAD
3
x
U
M
3
x
U
G
3
x
I G
MCB
3x
T
3x
MCB
MCB FEEDBACK
K4
MCB
GCB
GCB FEEDBACK
3x
MCB CLOSE/OPEN
GCB CLOSE/OPEN
BO
BI
MCB
K3
GCB
GCB
Specification
Automatic remote gen-set start when the mains fails (AUT mode)
GCB & MCB full control with feedbacks
Break transfer on mains failure
Break return on mains return (Load reclosing)
Test mode (set running and waiting for mains failure)
Hardware requirements
1x
IA-NT PWR
Setpoints
MCB Logic = “CLOSE-OFF”
