Ampcontrol Pty Ltd
– ABN 28 000 915 542
OCS USER MANUAL
MAG-182 Version 5
– FEB/2020
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
Page 46 of 72
A
P
P
R
OV
E
D
FOR
E
X
T
E
R
N
A
L
D
IS
TR
IB
U
T
ION
–
P
R
OP
E
R
T
Y
OF
A
M
P
C
ON
TR
OL
P
T
Y
LTD
–
N
O
T
T
O
B
E
R
E
P
R
OD
U
C
E
D
I
N
P
A
R
T
8.4 Under Current
Table 22: Protection Element
– Under Current Trip Characteristics
Parameter
Action
Power Cycle
-
Reset
Automatic
Trip Actions
Open Main Contactor
Prevent Main Contactor from closing
Active Period
When outlet is running
Logging
When a fault occurs
Parameters
Trip Level
Monitoring
Phase currents displayed in Amps.
Under current protection monitors all three phase currents. If any phase drop below the selected
threshold, the trip timer start counting. The under current protection will trip after any phase current is
below the threshold for 4 second.
9
OTHER PROTECTION FUNCTIONS
9.1 Under Voltage
Table 23: Protection Element
– Under Voltage Trip Characteristics
Parameter
Action
Power Cycle
-
Reset
Automatic
Active Period
When outlet is running
Logging
Only if outlet is running
Parameters
Trip Level
Monitoring
Phase voltage displayed in Volts.
Under Voltage protection is enabled as soon as the main contactor is closed (indicated by closing the
MCI input). If any of the phase voltages drop below the selected trip setting of the nominal line voltage
for 800ms then the outlet is stopped.
