5-108
T60 Transformer Protection System
GE Multilin
5.4 SYSTEM SETUP
5 SETTINGS
5
The T60 Transformer Protection System has been designed to provide primary protection for medium to high voltage power
transformers. It is able to perform this function on 2 to 5 winding transformers in a variety of system configurations.
b) GENERAL TRANSFORMER SETTINGS
PATH: SETTINGS
SYSTEM SETUP
TRANSFORMER
GENERAL
The general transformer settings apply to all windings. Settings specific to each winding are shown in the following section.
•
NUMBER OF WINDINGS
: Selects the number of windings for transformer setup.
•
REFERENCE WINDING
: When set to Automatic Selection, a CT ratio mismatch can occur in firmware versions up to
7.1x that can cause signal clamping and misoperation on the differential element. To avoid this, manually select the
winding as outlined in the T35/T60 Reference Winding Selection and CT Ratio Mismatch Application Note (document
GET-8548). For releases subsequent to 7.1x, contact GE Grid Solutions to inquire if this applies.
•
PHASE COMPENSATION
: Selects the type of phase compensation to be performed by the relay. If set to “Internal
(software)”, the transformer phase shift is compensated internally by the relay algorithm. If set to “External (with CTs)”,
the transformer phase shift is externally compensated by the CT connections.
•
LOAD LOSS AT RATED LOAD
: This setting should be taken from the transformer nameplate. If not available from the
nameplate, the setting value can be computed as
, where
is the winding rated current and
R
is
the three-phase series resistance. The setting is used as an input for the calculation of the hottest-spot winding tem-
perature.
MESSAGE
WINDING 4
MESSAGE
WINDING 5
MESSAGE
WINDING 6
MESSAGE
THERMAL INPUTS
GENERAL
NUMBER OF WINDINGS:
2
Range: 2 to 6 in steps of 1
MESSAGE
REFERENCE WINDING:
Automatic Selection
Range: Automatic Selection, Winding 1, Winding 2,...,
Winding 5
MESSAGE
PHASE COMPENSATION:
Internal (software)
Range: Internal (software), External (with CTs)
MESSAGE
LOAD LOSS AT RATED
LOAD:
100 kW
Range: 1 to 20000 kW in steps of 1
MESSAGE
RATED WINDING TEMP
RISE: 65°C (oil)
Range: 55°C (oil), 65°C (oil), 80°C (dry), 115°C (dry),
150°C (dry)
MESSAGE
NO LOAD LOSS:
10 kW
Range: 1 to 20000 kW in steps of 1
MESSAGE
TYPE OF COOLING:
OA
Range: OA, FA, Non-directed FOA/FOW, Directed FOA/
FOW, Sealed Self Cooled, Vented Self Cooled,
Forced Cooled
MESSAGE
TOP-OIL RISE OVER
AMBIENT:
35°C
Range: 1 to 200°C in steps of 1
MESSAGE
THERMAL CAPACITY:
100.00 kWh/°C
Range: 0.00 to 200.00 kWh/°C in steps of 0.01
MESSAGE
WINDING THERMAL TIME
CONSTANT: 2.00 min
Range: 0.25 to 15.00 min. in steps of 0.01
P
R
I
n W
( )
2
R
×
=
I
n W
( )
Summary of Contents for T60
Page 6: ...vi T60 Transformer Protection System GE Multilin TABLE OF CONTENTS ...
Page 14: ...xiv T60 Transformer Protection System GE Multilin TABLE OF CONTENTS ...
Page 34: ...1 20 T60 Transformer Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 490: ...5 344 T60 Transformer Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 522: ...6 32 T60 Transformer Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 536: ...7 14 T60 Transformer Protection System GE Multilin 7 1 COMMANDS 7 COMMANDS AND TARGETS 7 ...
Page 568: ...10 12 T60 Transformer Protection System GE Multilin 10 6 DISPOSAL 10 MAINTENANCE 10 ...
Page 596: ...A 28 T60 Transformer Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 716: ...B 120 T60 Transformer Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 762: ...E 10 T60 Transformer Protection System GE Multilin E 1 IEC 60870 5 104 PROTOCOL APPENDIX E E ...
Page 774: ...F 12 T60 Transformer Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...