Inductive Voltage Transformer EGF high voltage

Inductive Voltage Transformer EGF high voltage

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Inductive Voltage Transformer EGF high voltage,
Voltage transformers type EGF are used in high voltage substations within the 245-550 kV range.
They transform high voltage into standardised,
equivalent values for meters, measuring and protection devices.

Technical data

Type EGF

245 300 330 362 420 550
Standard IEC / IEEE
Highest voltage for equipment kV 245 300 330 363 420 550
Rated power-frequency withstand voltage kV 460 460 460 575 630 680
Rated lightning impulse withstand voltage kV 1050 1050 1175 1175 1425 1550
Frequency Hz 50 / 60
Accuracy class 0.1-3; 3P; 6P
Rated thermal limiting output VT part VA ≤ 3000
Max. simultaneous burden (cl. 0.2) VA ≤ 300
Max. number windings 5
Nominal operating / transport overpressure (20°C) bar 4 / 0.5

Type EGF

245

 300 330 362 420 550
Height of unit* A mm 3930 3930 4993 4993 5353 6183
Height to primary terminal* B mm 3905 3905 4968 4968 5328 6153
Depth of unit including terminal box C mm 1052 1052 1293 1293 1293 1293
Depth of unit base D mm 730 730 1075 1075 1075 1075
Width of unit base E mm 730 730 1075 1075 1075 1075
Distance between screw holes at base F mm 600 600 900 900 900 900
Min. creepage distance*   mm 6700 7500 8250 9050 10500 13759
Gross weight, approx. *   kg 670 670 805 805 820 850
Gas weight, approx. * kg 21 21 34 34 36 39

 

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