CHAPTER 5: SETTINGS
SYSTEM SETUP
T35 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
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5
The aging acceleration factor is computed every minute. It has a value of 1.0 when the actual winding hottest spot
temperature is equal to the rated temperature, is greater than 1 if the actual temperature is above the rated temperature,
and less than 1 if the actual temperature is below the rated temperature.
NO LOAD LOSS
— This setting is obtained from the transformer data and is used to calculate the aging acceleration factor.
TYPE OF COOLING
— Defines the type of transformer cooling and is used to calculate the aging acceleration factor. The
values and their description for this setting are as follows:
“OA”: oil-air
“FA”: forced air
“Non-directed FOA/FOW”: non-directed forced-oil-air/forced-oil-water
“Directed FOA/FOW”: directed forced-oil-air/forced-oil-water
TOP OIL RISE OVER AMBIENT
— Available from the transformer nameplate data
THERMAL CAPACITY
— Available from the transformer nameplate data. If not, see the following calculations. For the “OA”
and “FA” cooling types:
C = 0.06 (core and coil assembly in lbs.) + 0.04 (tank and fittings in lbs.) +1.33 (gallons of oil), Wh/°C; or
C = 0.0272 (core and coil assembly in kg) + 0.01814 (tank and fittings in kg) + 5.034 (L of oil), Wh/°C
For the “Non-directed FOA/FOW” (non-directed forced-oil-air/forced-oil-water) or “Directed FOA/FOW” (directed forced-oil-
air/forced-oil-water) cooling types, the thermal capacity is given by:
C = 0.06 (core and coil assembly in lbs.) + 0.06 (tank and fittings in lbs.) + 1.93 (gallons of oil), Wh/°C; or
C =0.0272 (weight of core and coil assembly in kg) + 0.0272 (weight of tank and fittings in kg) + 7.305 (L of oil), Wh/°C
For dry-type power transformers:
C = 0.048
×
(weight of copper winding); or
C = 0.015
×
(weight of core and copper windings from the nameplate); or
C = 0.12
×
(weight of aluminum windings); or
C = 0.02
×
(weight of core and aluminum coils from the nameplate)
WINDING THERMAL TIME CONSTANT
— Required for insulation aging calculation. If this value is not available from the
transformer data, select “2 min.”
5.5.4.3 Windings 1 to 6
SETTINGS
SYSTEM SETUP
TRANSFORMER
WINDING 1(6)
Rated Winding
Temperature
Power Capacity
Normal Life
Expectancy
At
Θ
H_R
Oil
55 °C
≤
500 kVA
180000 hrs
95 °C
≤
100 MVA
6.5
×
10
4
hrs
95 °C
65 °C
≤
500 kVA
20 years
110 °C
≤
100 MVA
6.5
×
10
4
hrs
110 °C
> 100 MVA
6.5
×
10
4
hrs
110 °C
Dry
80 °C
Any
20 years
140 °C
115 °C
Any
20 years
175 °C
150 °C
Any
20 years
210 °C
WINDING 1
WINDING 1 SOURCE:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6
(or the user-defined name)
WINDING 1 RATED MVA:
100.000 MVA
Range: 0.001 to 2000.000 MVA in steps of 0.001
WINDING 1 NOM
φ
-
φ
VOLTAGE: 220.000 kV
Range: 0.001 to 2000.000 kV in steps of 0.001
Содержание T35
Страница 9: ...TABLE OF CONTENTS T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL ix ABBREVIATIONS INDEX ...
Страница 10: ...x T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL TABLE OF CONTENTS ...
Страница 14: ...1 4 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL FOR FURTHER ASSISTANCE CHAPTER 1 INTRODUCTION 1 ...
Страница 202: ...4 88 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL FLEXLOGIC DESIGN USING ENGINEER CHAPTER 4 INTERFACES 4 ...
Страница 472: ...5 270 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL TESTING CHAPTER 5 SETTINGS 5 ...
Страница 500: ...6 28 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL PRODUCT INFORMATION CHAPTER 6 ACTUAL VALUES 6 ...
Страница 514: ...7 14 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL TARGETS MENU CHAPTER 7 COMMANDS AND TARGETS 7 ...
Страница 580: ...A 16 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL FLEXANALOG ITEMS APPENDIX A FLEXANALOG OPERANDS A ...
Страница 588: ...C 6 T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL COMMAND LINE INTERFACE APPENDIX C COMMAND LINE INTERFACE C ...
Страница 596: ...iv T35 TRANSFORMER PROTECTION SYSTEM INSTRUCTION MANUAL ABBREVIATIONS ...