ABB GSB 245 Technical Manual - Page 6

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T R A N S F O R M E R B U S H I N G S T Y P E G S B T E C H N I C A L G U I D E

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Table 1. General specifications

For conditions exceeding the standard specification, please consult the supplier.

Application:

Classification:

Ambient temperature:

Altitude of site:

Level of rain and humidity:

Pollution level:

Immersion medium:

Max pressure of medium:

Angle of mounting:

Test tap:

Voltage tap:

Capacitance C

Conductor:

Markings:

Cenelec Technical specification

50458

Transformers

Resin impregnated paper, capacitance graded, outdoor immersed bushing,

temperature class E (120 °C) according to IEC 60137

+40 to -40 °C (-60 °C according to GOST 10693-81 in applicable parts.)

< 1000 m

1-2 mm rain/min. horizontally and vertically, as per IEC 60060-1, and 5 mm/min. as per

IEEE

According to specific creepage distance and IEC 60815

Transformer oil.

Oil temperatures for normal load:

Maximum daily mean temperature +90 °C. Maximum temporary temperature: +100 °C.

Oil temperatures for long and short time overload:

Maximum daily mean temperature +90 °C. Maximum temporary temperature: +115 °C.

100 kPa (over pressure)

Horizontal to vertical

Dimensions according to IEEE Potential tap type A. U

of test tap:

< 5000 pF

Center tube or flexible draw lead conductor.

Conforming to IEC/IEEE.

Yes, for GSB 245 and GSB 420

= max. 600 V

= 6 kV