Table. 5.4.10 - 111. Setting parameters for reset time characteristics.
Name
Range
Step
Default
Description
Release
time delay
0.000…150.000s 0.005s 0.06s
Resetting time. The time allowed between pick-ups if the pick-up has not
led to a trip operation. During this time the START signal is held on for
the timers if the delayed pick-up release is active.
Delayed
pick-up
release
1: No
2: Yes
-
1: Yes
Resetting characteristics selection either as time-delayed or as instant
after the pick-up element is released. If activated the START signal is
reset after the set release time delay.
Time calc
reset after
release
time
1: No
2: Yes
-
2: Yes
Operating timer resetting characteristics selection. When active, the
operating time counter is reset after a set release time if the pick-up
element is not activated during this time. When disabled, the operating
time counter is reset directly after the pick-up element is reset.
Continue
time
calculation
during
release
time
1: No
2: Yes
-
1: No
Time calculation characteristics selection. If activated, the operating time
counter is continuing until a set release time has passed even if the pick-
up element is reset.
The user can reset characteristics through the application. The default setting is a 60 ms delay; the
time calculation is held during the release time.
In the release delay option the operating time counter calculates the operating time during the release.
When using this option the function does not trip if the input signal is not re-activated while the release
time count is on-going.
Events and registers
The overvoltage function (abbreviated "OV" in event block names) generates events and registers from
the status changes in START, TRIP, and BLOCKED. The user can select which event messages are
stored in the main event buffer: ON, OFF, or both. The function offers four (4) independent stages;
the events are segregated for each stage operation.
The events triggered by the function are recorded with a time stamp and with process data values.
Table. 5.4.10 - 112. Event messages.
Event block name
Event names
OV1
Start ON
OV1
Start OFF
OV1
Trip ON
OV1
Trip OFF
OV1
Block ON
OV1
Block OFF
OV2
Start ON
OV2
Start OFF
OV2
Trip ON
OV2
Trip OFF
OV2
Block ON
OV2
Block OFF
OV3
Start ON
A
AQ
Q-M257
-M257
Instruction manual
Version: 2.07
© Arcteq Relays Ltd
IM00021
139
Summary of Contents for AQ-M257
Page 1: ...AQ M257 Motor protection IED Instruction manual...
Page 2: ......