Name
Range
Step
Description
I
meas
/I
set
at the
moment
0.00...1250.00
0.01
The ratio between the highest measured phase current and the pick-up
value.
Function blocking
The block signal is checked in the beginning of each program cycle. The blocking signal is received
from the blocking matrix in the function's dedicated input. Additionally, the function includes an internal
inrush harmonic blocking option which is applied according to the parameters set by the user. If the
blocking signal is not activated when the pick-up element activates, a START signal is generated and
the function proceeds to the time characteristics calculation.
Table. 5.4.2.2 - 60. Internal inrush harmonic blocking settings.
Name
Range
Step
Default
Description
Inrush harmonic blocking (internal-
only trip)
0: No
1: Yes
-
0: No
Enables and disables the 2
nd
harmonic
blocking.
2
nd
harmonic blocking limit (Iharm/
Ifund)
0.10…50.00%I
fund
0.01%I
fund
20.00%I
fund
Defines the limit for the 2
nd
harmonic
blocking.
If the blocking signal is active when the pick-up element activates, a BLOCKED signal will be generated
and the function does not process the situation further. If the START function has been activated before
the blocking signal, it resets and the release time characteristics are processed similarly to when the
pick-up signal is reset.
The blocking of the function causes an HMI display event and a time stamped blocking event with
information of the startup current values and its fault type to be issued.
The blocking signal can also be tested in the commissioning phase by a software switch signal when
the relay's testing mode "Enable stage forcing" is activated (
General
→
Device).
The variables the user can set are binary signals from the system. The blocking signal needs to reach
the device minimum of 5 ms before the set operating delay has passed in order for the blocking to
activate in time.
Events and registers
The capacitor bank current unbalance protection function (abbreviated "UCP" in event block names)
generates events and registers from the status changes in ALARM START, ALARM, START, TRIP,
BLOCKED and HARMONIC BLOCK. The user can select which event messages are stored in the main
event buffer: ON, OFF, or both. The function offers one (1) independent stage.
The events triggered by the function are recorded with a time stamp and with process data values.
Table. 5.4.2.2 - 61. Event messages.
Event block name
Event names
UCP1
Alarm Start ON
UCP1
Alarm Start OFF
UCP1
Alarm ON
UCP1
Alarm OFF
UCP1
Start ON
UCP1
Start OFF
A
AQ
Q-C215
-C215
Instruction manual
Version: 2.07
110
© Arcteq Relays Ltd
IM00040
Содержание AQ-C215
Страница 1: ...AQ C215 Capacitor bank protection IED Instruction manual ...
Страница 2: ......
Страница 297: ...Figure 7 4 179 Example block scheme A AQ Q C215 C215 Instruction manual Version 2 07 Arcteq Relays Ltd IM00040 295 ...
Страница 318: ...Figure 8 14 200 Device installation A AQ Q C215 C215 Instruction manual Version 2 07 316 Arcteq Relays Ltd IM00040 ...
Страница 347: ...10 Ordering information A AQ Q C215 C215 Instruction manual Version 2 07 Arcteq Relays Ltd IM00040 345 ...