Table of Contents
Advertisement
REF 610
4.1.4.10.
46
Feeder Protection Relay
Technical Reference Manual
Settings
There are two alternative setting groups available, setting groups 1 and 2. Either of
these setting groups can be used as the actual settings, one at a time. Both groups
have their related registers. By switching between the setting groups, a whole group
of settings can be changed at the same time. This can be done in any of the following
ways:
• via the HMI
• entering SPA parameter V150 via serial communication
• via a digital input
Note!
Switching between setting groups via a digital input has higher priority than via the
HMI or with V150.
The setting values can be altered via the HMI or with a PC provided with the Relay
Setting Tool.
Before the relay is connected to a system it must be assured that the relay has been
given the correct settings. If there is any doubt, the setting values should be read with
the relay trip circuits disconnected or tested with current injection; refer to section
Check lists for additional information.
Table 4.1.4.10-1 Setting values
Setting
Description
I>/I
Start value of stage I>
n
t>
Operate time of stage I>
IDMT I>
Time/current characteristic for stage
I>
k
Time multiplier k
n
Time multiplier n
t
>
Resetting time of stage I>
r
I>>/I
Start value of stage I>>
n
t>>
Operate time of stage I>>
I>>>/I
Start value of stage I>>>
n
t>>>
Operate time of stage I>>>
I
>/I
Start value of stage I
0
n
t
>
Operate time of stage I
0
IDMT I
>
Time/current characteristic for stage
0
I
>
0
k
Time multiplier k
0
n
Time multiplier n
0
t
>
Resetting time of stage I
r0
I
>>/I
Start value of stage I
0
n
t
>>
Operate time of stage I
0
∆I>
Start value of stage ∆I>
Operate time of stage ∆I>
t
>
∆
I
Full load current
θ
τ
Time constant of stage θ>
Setting range
0.30...5.00 x I
0.05...300 s
0...8
0.05...1.00
1.0...15.0
0.05...2.50 s
0.50...35.0 x I
0.04...300 s
0.50...35.0 x I
0.04...30.0 s
>
1.0...100% I
0
>
0.05...300 s
0
0...8
0.05...1.00 s
0
1.0...15.0
0
>
0.05...2.50
0
>>
5.0...400% I
0
>>
0.05...300 s
0
10...100%
1...300 s
0.30...1.50 x I
1...200 min
1MRS 755310
Default setting
0.30 x I
n
n
0.05 s
0
0.05
1.0
0.05 s
0.50 x I
n
n
0.04 s
0.50 x I
n
n
0.04 s
1.0% I
n
n
0.05 s
0
0.05 s
1.0
0.05
5.0% I
n
n
0.05 s
100%
60 s
0.30 x I
n
n
1 min
Advertisement
Table of Contents
