Application and Setting Notes
Parameter:
Gn 60CTS-I Element
•
Default setting:
Disabled
This setting is used to allow the element to be switched on and off if it is not required.
Parameter Value
Description
Disabled
This element is off and is not available
Enabled
The element is available for use and can be parame-
terized
Parameter:
Gn 60CTS-I Setting
•
Default setting: 0.05 x I
n
(0.05 ⋅ I
rated
)
The current from each phase is monitored. If 1 or 2 of the 3 input currents falls below this setting the
60CTS Delay
is initiated.
If all 3 input currents fall below the setting, CT failure is not raised.
Parameter:
Gn 60CTS-I Delay
•
Default setting:
10 s
This is the delay applied to the 60CTS-I alarm output. This delay is used to prevent nuisance indications
which would otherwise occur during switching operations and system faults.
Parameter:
Gn 60CTS-V Element
•
Default setting:
Disabled
This setting is used to allow the element to be switched on and off if it is not required.
Parameter Value
Description
Disabled
This element is off and is not available
Enabled
The element is available for use and can be parame-
terized
Parameter:
Gn 60CTS-V Inps
•
Default setting: 0.1 x I
n
(0.1 ⋅ I
rated
)
If the measured negative phase sequence current is above this threshold without corresponding NPS
voltage it could indicate that a CT failure has occurred. The 60CTS-V element will not operate unless this
threshold is exceeded.
Parameter:
Gn 60CTS-V Vnps
•
Default setting:
10 V
If the negative phase sequence voltage is above this threshold this indicates a system fault and operation
of the 60CTS-V element is inhibited.
Parameter:
Gn 60CTS-V Delay
•
Default setting:
10 s
This is the delay applied to the 60CTS-V alarm output. This delay is used to prevent nuisance indications
which would otherwise occur during switching operations and system faults.
6.2.4
Supervision Functions
6.2 60CTS CT Supervision
348
Reyrolle 7SR5, Transformer Protection Device, Device Manual
C53000-G7040-C015-1, Edition 11.2019
Содержание Reyrolle 7SR5
Страница 8: ...8 Reyrolle 7SR5 Transformer Protection Device Device Manual C53000 G7040 C015 1 Edition 11 2019 ...
Страница 24: ...24 Reyrolle 7SR5 Transformer Protection Device Device Manual C53000 G7040 C015 1 Edition 11 2019 ...
Страница 132: ...132 Reyrolle 7SR5 Transformer Protection Device Device Manual C53000 G7040 C015 1 Edition 11 2019 ...
Страница 142: ...142 Reyrolle 7SR5 Transformer Protection Device Device Manual C53000 G7040 C015 1 Edition 11 2019 ...
Страница 338: ...338 Reyrolle 7SR5 Transformer Protection Device Device Manual C53000 G7040 C015 1 Edition 11 2019 ...