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ABB GSB oil-air transformer bushing  245KV
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ABB GSB oil-air transformer bushing 245KV

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ABB GSB oil-air transformer bushing  245KV


Ratings GSB 245 362 420 550-1675 550-1800

Rated voltage IEC (kV) / Nominal system voltage 245 362 420 550 550

Rated phase-to-ground voltage IEC (kV) / Insulation class (kV) 146 220 243 318 318

Rated line-to-ground voltage IEEE (kV) 146 220 243 318 318

Basic Insulation Level (kV) (Equal to dry lightning impulse withstand voltage.) 1050 1175 1550 1675 1800

Dry switching impulse (kV) 850 950 1050 1300 1300

Wet switching impulse (kV) 750 950 1050 1300 1300

Rated current (A) IEC/IEEE 1600 1600 1600 1600 1600

Rated frequency (Hz) 50-60 50-60 50-60 50-60 50-60

Temporary over voltage (kV) IEC (phase-to-ground voltage) 196 290 336 440 440

Wet power frequency AC (kV) 460 n.a. 650 750 750

Dry power frequency, routine test 1 min. (kV) 506 561 693 750 750


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