ComAp InteliLite NT AMF Series - Alarm Time Chart and Phase Detection; Alarm Time Chart Overview; Voltage Phase Sequence Detection; Sensor Fail Detection

InteliLite
NT
– AMF20/25, SW version 1.2, ©ComAp – March 2008 68
IL-NT-AMF-Reference Guide1.2.pdf
Alarm time chart
"All the time" configured protections, I >, I >>, RPM >>, mains failure detection
GCB opened
"Engine running only" protections, engine
water temperature luboil pressure
Underspeed
Stop
Start
Starter OFF
ProtectHoldoff
Switched to
nominal speed
Min Stab Time
GCB closed
Max Stab Time
Gen >V, <V,
>Freq, <Freq
Idle Time
5 sec
Voltage phase sequence detection
InteliLite controller detects phase sequence on both generator and mains/bus voltage terminals. This
protections are important after controller installation to avoid wrong voltage phases phase connection.
Following alarms can be detected:
Wrong phase sequence
There is fix defined phase sequence in InteliLite controller L1, L2, L3. When the phases are
connected in different order (e.g. L1,L3,L2 or L2,L1,L3) following alarms are detected:
Gen CCW Rot = wrong generator phase sequence
Mains CCW Rot = wrong mains phase sequence
Sensor fail detection
Sensor fail Fls is detected when measured value is 6 percent out of range. Controller screen displays
in this case string #### instead measured value.
R1
R2
R3
R4
R5
GCB, MCB fail detection
MCB or GCB fail detection is based on binary output CB close/open comparing with binary input CB
feedback.
Range of sensor
+6%
Range of measurement
100%
Sensor
Failure
Sensor
Failure
-6%