GE 845 - Page 204

4–76 845 TRANSFORMER PROTECTION SYSTEM – INSTRUCTION MANUAL
SYSTEM CHAPTER 4: SETPOINTS
Figure 4-19: Data for Winding Temperature rise over 30°C
NO LOAD LOSS
Range: 0.001 to 20000.000 kW in steps of 0.001
Default: 125.000 kW
This setting is obtained from the transformer data and is used to calculate the aging
acceleration factor.
TYPE OF COOLING
Range: OA, FA, Non-Directed FOA/FOW, Directed FOA/FOW, Sealed Self Cooled, Vented
Self Cooled, Forced Cooled
Default: OA
The setting 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
“Sealed Self Cooled”, “Vented Self Cooled”, “Forced Cooled”: as named
TOP OIL RISE OVER AMBIENT
Range: 1 to 200°C in steps of 1
Default: 35°C
This setting is available from the transformer nameplate data.
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