Transformer - GE T60 Instruction Manual

CHAPTER 5: SETTINGS

5.5.4 Transformer

5.5.4.1 Menu
SETTINGS  SYSTEM SETUP  TRANSFORMER
 TRANSFORMER

The T60 provides primary protection for medium to high voltage power transformers. It is able to perform this function on
two to five winding transformers in a variety of system configurations.
5.5.4.2 General transformer settings
SETTINGS  SYSTEM SETUP  TRANSFORMER  GENERAL
 GENERAL

The general transformer settings apply to all windings. Settings specific to each winding are shown in the following
section.
— Selects the number of windings for transformer setup.
NUMBER OF WINDINGS
— Reference winding is the winding to which all currents are referred. That is, the currents from all
REFERENCE WINDING
other windings are normalized (magnitude compensation) to this winding, and the per unit value of the differential
currents, the restraint currents, and the corresponding differential characteristics (pickup, break points, and so on) are all
based on the CT Nominal of this winding. The reference winding can be selected either automatically or manually. When
T60 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
 GENERAL


 WINDING 1



 WINDING 6


 THERMAL INPUTS


NUMBER OF WINDINGS:

2
REFERENCE WINDING:

Automatic Selection
PHASE COMPENSATION:

Internal (software)
LOAD LOSS AT RATED

LOAD: 100 kW
RATED WINDING TEMP

RISE: 65°C (oil)
NO LOAD LOSS:

10 kW
TYPE OF COOLING:

OA
TOP-OIL RISE OVER

AMBIENT: 35°C
THERMAL CAPACITY:

100.00 kWh/°C
WINDING THERMAL TIME

CONSTANT: 2.00 min
See below
See page 5-151
See page 5-160
Range: 2 to 6 in steps of 1
Range: Automatic Selection, Winding 1, Winding 2,...,
Winding 5
Range: Internal (software), External (with CTs)
Range: 1 to 20000 kW in steps of 1
Range: 55°C (oil), 65°C (oil), 80°C (dry), 115°C (dry),
150°C (dry)
Range: 1 to 20000 kW in steps of 1
Range: OA, FA, Non-directed FOA/FOW, Directed FOA/FOW,
Sealed Self Cooled, Vented Self Cooled, Forced Cooled
Range: 1 to 200°C in steps of 1
Range: 0.00 to 200.00 kWh/°C in steps of 0.01
Range: 0.25 to 15.00 min. in steps of 0.01
SYSTEM SETUP
5
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