73
Time delayed residual overcurrent protection
(TEF)
Chapter 5
Current
3.4
Logic diagram
Figure 30:
Simplified logic diagram for the residual overcurrent protection
3.5
Input and output signals
Table 83:
Input signals for the TEF (TEF--) function block
Path in local HMI: ServiceReport/Functions/EarthFault/TimeDelayEF/FuncOutputs
99000204.vsd
Operation = ON
Def/NI/VI/EI/LOG
&
&
>1
EFCh
k
IN>
±Σ
300ms
t
1000ms
t
3Io>
t
tMin
&
t
t1
&
IMin
20%
50ms
t
TEF--TRIP
= Directional
100% FORW ARD
60% REVERSE
3Iox
cos (
φ
-65)
EF3IoSTD
0.01Un
2fn
2fn
Direction
Option:
Directional check
3Uo
TEF--BLOCK
&
&
&
&
&
TEF--TRSOTF
TEF--STFW
TEF--STRV
TEF--START
TEF--BC
TEF--BLKTR
3Io
>1
&
&
Signal
Description
BLOCK
Block of function
BLKTR
Block of trip
BC
Information on breaker position, or on breaker closing command
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 ...