InteliATS
NT
PWR, SW version 1.0, ©ComAp – March 2009 17
IA-NT- PWR-1.0-Reference Guide R1.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
3xU
M
3xU
G
3xI
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”
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