IS 2099-1986

标准号：IS 2099-1986
发布日期：1986/12/1 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：1.1 This standard covers rated values, performance requirements and tests for bushings for three-phase alternating current systems, having rated voltage above 1000 volts and frequencies between 15 and 60 Hz.1.2 This standard applies to bushings which are supplied separately, intend-ed for use in electrical apparatus and installations for three-phase alternat-ing current system having rated voltages above 1 000 volts and frequencies between 15 to 60 Hz.Note 1 — The application of this standard to bushings for other than three-phase systems shall be subject to special agreement between the purchaser and the manu-facturer.Note 2 — This standard does not apply to bushings for use with rectifiers, rotating machines, testing transformer, dc converter transformers, or terminals for power cables ( pot heads ). Such bushings shall be subject to special agreement between the purchaser and the manufacturer.Note 3 — Moreover, this standard is not applicable to insulating structures similar to bushings which are used as support insulators inside metal enclosed switchgear.Note 4 — If a bushing, due to its design or use, cannot be tested separately under the conditions specified in this standard, the test procedure is to be agreed upon between the purchaser and the manufacturer.