Name
Range
Step
Description
Voltage fault type
0: -
1: A(AB)
2: B(BC)
3: A-B(AB-BC)
4: C(CA)
5: A-C(AB-CA)
6: B-C(BC-CA)
7: A-B-C
8: -
9: Overfrequency
10: Underfrequency
11: Overpower
12: Underpower
13: Reversepower
14: Thermal overload
15: Unbalance
16: Harmonic overcurrent
17: Residual overvoltage
-
The voltage fault type.
Magnitude 1…8
0.000…1800.000 A/V/p.u.
0.001 A/V/p.u.
The recorded value in one of the eight channels.
Events
The measurement value recorder function (abbreviated "VREC" in event block names) generates
events from the function triggers. The user can select which event messages are stored in the main
event buffer: ON, OFF, or both.
Table. 5.6.8 - 323. Event messages.
Event block name
Event name
VREC1
Recorder triggered ON
VREC1
Recorder triggered OFF
5.6.9 Running hour counter
The running hour counter (abbreviated "RHC" in event block names) is capable of counting the running
time of a motor, a generator, or a similar application.
The counter value can be added to the mimic view and read to SCADA.
Table. 5.6.9 - 324. Parameter descriptions
Name
Range
Step
Description
Activate
counter
input
Any binary input -
Counter runs whenever input set here is active.
Running
hours
hh:mm:ss
-
Indicates running hours counted so far.
This value can be edited by the user. The user input must be set in seconds, which is
then converted by the device to hours, minutes and seconds (hh:mm:ss).
Start
count
0...4294967295
Starts
1
Start
Start counter.
Clear
hours
0: -
1: Clear
-
Clears "Running hours" and "Start count".
A
AQ
Q-M257
-M257
Instruction manual
Version: 2.07
412
© Arcteq Relays Ltd
IM00021
Summary of Contents for AQ-M257
Page 1: ...AQ M257 Motor protection IED Instruction manual...
Page 2: ......
