137
Fuse failure supervision (FUSE)
Chapter 8
Secondary system supervision
1.4
Logic diagram
Figure 70:
Simplified logic diagram for fuse failure supervision function, zero sequence
Store in non volatile
(FUSE-STORE3PH)
FUSE-BLOCK
FUSE-VTSU
99000500.vsd
FUSE - FUSE FAILURE SUPERVISION FUNCTION
TEST-ACTIVE
&
TEST
BlockFUSE= Yes
STZERO
&
FUSE-VTSZ
FUSE-VTF3PH
FUSE-MCB
FUSE-DISC
&
&
t
150 ms
FUSE-DLCND
t
200 ms
t
5 s
&
STUL3N
STUL2N
STUL1N
&
&
STORE3PH
20 ms
1:All voltages
are low
From non volatile
memory
0: All voltages
are high
(Reset Latch)
1:Fuse failure for
more than 5 s
Dead-Line
Block
(Set Latch)
1:Function Enable
1:Fuse Failure
Detection
≥
1
≥
1
&
≥
1
≥
1
≥
1
≥
1
≥
1
Summary of Contents for REL 501-C1 2.5
Page 1: ...Technical reference manual Line distance protection terminal REL 501 C1 2 5 ...
Page 2: ......
Page 26: ...14 Introduction to the technical reference manual Chapter 1 Introduction ...
Page 42: ...30 Technical data Chapter 2 General ...
Page 66: ...54 Blocking of signals during test BST Chapter 3 Common functions ...
Page 142: ...130 Time delayed overvoltage protection TOV Chapter 6 Voltage ...
Page 162: ...150 Autorecloser AR Chapter 9 Control ...
Page 174: ...162 Event function EV Chapter 10 Logic ...
Page 210: ...198 Serial communication Chapter 12 Data communication ...
Page 226: ...214 Serial communication modules SCM Chapter 13 Hardware modules ...
Page 230: ...218 Terminal diagrams Chapter 14 Diagrams Figure 87 REL 501 C1 with DC switch ...
Page 234: ...222 Terminal diagrams Chapter 14 Diagrams ...
Page 237: ......