GB 1985- 2004 高压交流隔离开关和接地开关 英文版

High-voltage Alternating-current Disconnectors and Earthing Switches

1. General

1.1 Scope

The standard is suitable for using for the following AC disconnectors and earthing switches, like fixed indoors and outdoors, terminal is seal and open, the rated voltage is more than 3.6kV, and the operating frequency is less than 50HZ.

The standard is also suitable for the operation mechanism and its auxiliary equipment of these disconnectors and earthing switches.

The additional requirement of disconnectors and earthing switches in enclosed switch equipment and control equipment are given in GB 3906, GB 7674 and IEC 60466.

Note: the standard is exclusive of the situation that the fuse is not taken as a component of the disconnectors.

1.2 Normative quotation

The clauses in the following documents are cited by the Standard becoming the clauses of the Standard. If the cited document is marked date, its subsequent amendment list (exclusive of correction content) or revised edition are not suitable for the Standard. However, the various parties entering into an agreement according to the Standard are encouraged to research whether these documents' latest edition is used or not. If the cited documents are not marked date, the latest edition is suitable for the standard.

GB/T 311.2-2002 Insulation co-ordination-Part 2: Application guide for insulation co-ordination for high voltage transmission and distribution equipment (eqv IEC 60071-2:1996)

GB/T 1804-2000 General tolerances-Tolerances for linear and angular dimensions without individual tolerance indications (eqv ISO 2768-1:1989)

GB/T 2900.20-1994 Electrotechnical terminology-High-voltage switchgear (neq IEC 60050)

GB 3804-2004 3.6kV-40.5 kV High-voltage AC Load Switch (IEC 60265-1:1998, MOD)

GB 3906-1991 3-35 kV AC Metal Seal Switchgear (neq IEC 60298:1990)

GB/ T 4109-1999 Technical specification of high voltage bushings (eqv IEC 60137:1995)

GB 4208-1993 Degrees of protection provided by enclosures (IP Code) (eqv IEC 60529:1989)

GB/T 5582-1993 External insulation pollution classes of high-voltage electric power equipments (neq IEC 60815:1986)

GB/T 7354-2003 Partial Discharge Measurement (IEC 60270:2000, IDT)

GB 7674-1997 Gas-insulated metal-enclosed switchgear for rated voltages of 72.5 kV and above (eqv IEC 60517:1990)

GB/T 11022-1999 Common specifications for high-voltage switchgear and controlgear standards (eqv IEC 60694:1996)

GB/T 14810-1993 AC high-voltage switches for rated voltages of 110kV and above (neq IEC 60265-2:1988)

IEC 60466:1987 AC insulation-enclosed switchgear and controlgear for rated voltage 1kV above to 38kV

IEC 60865-1:1993 Short-circuit currents - Calculation of effects- Part 1 Definition and calculation method