67
Instantaneous non-directional overcurrent
protection (IOC)
Chapter 5
Current
Table 76:
Output signals for the IOC (IOC--) function block
1.6
Setting parameters
Path in local HMI: Settings/Functions/Group
n
/InstantOC (where
n
=1-4)
Table 77:
Setting parameters for the instantaneous phase and residual overcurrent pro-
tection IOC (IOC--) (non-dir.) function
1.7
Technical data
Table 78:
IOC - Instantaneous overcurrent protection
Signal
Description
TRIP
Trip by instantaneous overcurrent function.
TRP
Trip by instantaneous phase overcurrent function when included
TRL1
Trip by instantaneous overcurrent function, phase L1 when single pole
tripping is included
TRL2
Trip by instantaneous overcurrent function, phase L2 when single pole
tripping is included
TRL3
Trip by instantaneous overcurrent function, phase L3 when single pole
tripping is included
TRN
Trip by the instantaneous residual overcurrent function when included
Parameter
Range
Default
Unit
Description
Operation
Off, On
Off
-
Operating mode for the IOC function
IP>>
50-2000
Step: 1
100
% of I1b
Operating phase current
IN>>
50-2000
Step: 1
100
% of I1b
Operating residual current
Function
Setting range
Operate time
Accuracy
Operate current
I>>
Phase measuring
elements
(50-2000)% of I1b In
steps of 1%
-
±
2.5 % of I
r
at I
≤
I
r
±
2.5 % of I at I > I
r
-
Residual measuring
elements
(50-2000)% of I1b In
steps of 1%
±
2.5 % of I
r
at I
≤
I
r
±
2.5 % of I at I > I
r
Maximum operate time at I > 10
×
I
set
Max. 15ms
-
Dynamic overreach at
τ
< 100 ms
-
< 5%
Содержание REL 551-C1*2.5
Страница 1: ...Technical reference manual ProtectIT Line differential protection terminal REL 551 C1 2 5 ...
Страница 23: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Страница 39: ...30 Technical data Chapter 2 General ...
Страница 63: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Страница 71: ...62 Line differential protection phase segregated DIFL Chapter 4 Line differential protection ...
Страница 89: ...80 Thermal phase overload protection THOL Chapter 5 Current ...
Страница 101: ...92 Event function EV Chapter 7 Logic ...
Страница 160: ...151 Chapter 11 Diagrams Chapter 11 Diagrams This chapter contains the terminal diagrams for the terminal ...
Страница 162: ...153 Terminal diagrams Chapter 11 Diagrams 1 2 Terminal diagram REL 551 C1 Figure 38 REL 551 C1 ...
Страница 163: ...154 Terminal diagrams Chapter 11 Diagrams Figure 39 REL 551 C1 with DC switch ...
Страница 167: ...158 Terminal diagrams Chapter 11 Diagrams ...