
7SR210 & 7SR220 Commissioning & Maintenance Guide
© 2013 Siemens Protection Devices Limited
Page 69 of 82
3.3
Current Transformer Supervision. (60CTS)
7SR22
46
BC
46
NPS
(x2)
37
(x2)
49
50
BF
V
L1
(V
A
)
V
L2
(V
B
)
V
L3
(V
C
)
V
4
(V
X
)
I
L1
(I
A
)
81
HBL
2
37
(x2)
49
50
BF
I
L2
(I
B
)
81
HBL
2
37
(x2)
49
50
BF
I
L3
(I
C
)
81
HBL
2
60
CTS
I
4
(I
G
)
I
5
(I
SEF
)
74
TCS
NOTE: The use of some
functions are mutually exclusive
67/
50
(x4)
67/
51
(x4)
67/
50N
(x4)
67/
50
(x4)
67/
50
(x4)
67/
51
(x4)
67/
51
(x4)
67/
51N
(x4)
67/
50G
(x4)
67/
51G
(x4)
67/
50S
(x4)
67/
51S
(x4)
64
H
27
59
27
59
(x4)
27
59
(x4)
27
59
(x4)
47
(x2)
81
(x6)
79
Optional
59N
(x2)
81
HBL
2N
60
VTS
51V
51V
51V
37G
(x2)
37S
(x2)
51c
60
CTS-
I
60
CTS-
I
60
CTS-
I
37
50
BF
37
50
BF
25
21
FL
21
FL
21
FL
51c
51c
51c
Figure 3.3-1
Current Transformer Supervision
Voltage Inputs:
V
L1
(V
A
), V
L2
(V
B
), V
L3
(V
C
) for directional elements.
Current Inputs:
I
L1
(I
A
), I
L2
(I
B
), I
L3
(I
C
),
Disable:
51N, 46IT, 46DT, 46BC
Map Pickup LED:.
60CTS - Self Reset
The presence of NPS current without NPS voltage is used to indicate a current transformer failure.
Apply normal 3P balanced current with a crossover of any two phases at a level above
60CTS Inps
setting.
Measure the delay to operation.
Apply 3P balanced voltage with a similar phase crossover to the current. Increase the applied 3P voltage until the
CTS element resets.
Reduce the 3P voltage to cause CTS operation again. Gradually reduce the 3P current until the element resets.
Содержание Argus 7SR21
Страница 1: ...Energy Management 7SR21 7SR22 Argus Overcurrent Relay Reyrolle Protection Devices ...
Страница 2: ......
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