范围:国际标准IEC 71的本部分适用于电压高于1 kV的设备的三相交流系统。它规定了设备和这些系统安装的相间、相间和纵向绝缘的标准耐受电压选择程序。它还列出了标准耐受电压的标准值列表。本部分建议所选耐受电压应与设备的最高电压相关联。该协会仅用于绝缘协调目的。本标准不包括人身安全要求。尽管本部分的原则也适用于传输线绝缘，但耐受电压的值可能不同于标准耐受电压。考虑到本标准的建议，仪器委员会负责规定适用于相关设备的耐受电压和试验程序。 注:在IEC 71-2应用指南（修订版）中，本标准中给出的所有绝缘配合规则都有详细的理由，尤其是标准耐受电压与设备最高电压的关联。当一组以上的标准耐受电压与设备的同一最高电压相关联时，为选择最合适的一组提供指导。1A。1电力变压器和电抗器本条款适用于所有充液电力变压器、自耦变压器、升压变压器、有载调压变压器、串联调压器、接地变压器、移相变压器和并联电抗器。本条款涉及该设备的额定绝缘水平和介电测试规定。本条款涵盖的设备的介电测试通常根据CSA标准CAN/CSA的要求进行- C88。除非另有说明，脉冲试验应先于低频试验。虽然所有冲击试验均为标准冲击耐受试验（定义见本标准第5.3条），但未给出冲击次数，也未给出进行试验的顺序，除非如上所述。关于这些和其他细节，读者应参考CSA标准CAN/CSA-C88。1A。2配电变压器本条款适用于所有充液配电变压器，ONAN和LNAN型，额定电压为1000 kV？单相和3000 kV的A及以下电压？三相为A及以下，设备最高电压为36 kV及以下。本条款涉及该设备的额定绝缘水平和介电测试规定，并说明了CSA标准CAN/CSA-C2的要求。本条所述设备的介电试验通常按照后一标准的要求进行。 本条款还规定了自保护变压器的介电要求。1A。3干式变压器本条款适用于最高电压为1至46 kV设备的单相和三相干式变压器。本条款涉及本设备的额定绝缘水平和介电测试规定，并基于CSA标准C9。1A。4电容式电压互感器本条款适用于所有拟连接在线路和大地之间的电容式电压互感器，主要由电容分压器和电磁装置组成。电容式电压互感器可提供电力线载波耦合。本条款也适用于用作耦合电容器的电容分压器。它不适用于现场调节电容电位装置，包括套管电位装置和异相电位装置。本条款涉及该设备的额定绝缘水平和介电测试规定，并满足CSA标准CAN3的要求- C13。1.1A。5互感器本条款适用于包括电磁式电压互感器和电流互感器的所有互感器。本条款涉及该设备的额定绝缘水平和介电测试规定，并说明了CSA标准CAN3-C13的要求。1A。6电源断路器本条款规定了I和II范围内设备的单相和三相最高电压电源断路器的额定绝缘水平和介电测试。试验要求通常符合IEC 60056和IEC 60694的要求。如果ANSI C37测试要求不同，则应注意这些差异。1A。7隔离开关本条款规定了I和II范围内设备的单相和三相最高电压隔离开关的额定绝缘水平和介电试验。试验要求通常符合IEC 60129和IEC 60694的要求。 这里是ANSI C37。34.不同的测试要求，请注意这些差异。1A。8电力变压器和电抗器衬套本条款适用于户外套管，其雷电冲击耐受电压为110至1950 kV，作为充液变压器和电抗器的部件安装在Um为17.5至765 kV的系统上。本条款涉及该设备的额定绝缘水平和介电测试规定，并满足CSA标准CAN/CSA-C88的要求。1.

Scope:This part of International Standard IEC 71 applies to three- phase a.c. systems having a highest voltage for equipment above 1 kV. It specifies the procedures for the selection of the standard withstand voltages for the phase-to-earth, phase-to-phase and longitudinal insulation of the equipment and the installations of these systems. It also gives the lists of the standardized values from which the standard withstand voltages shall be selected.This part recommends that the selected withstand voltages should be associated with the highest voltage for equipment. This association is for insulation co-ordination purposes only. The requirements for human safety are not covered by this Standard.Although the principles of this part also apply to transmission line insulation, the values of the withstand voltages may be different from the standard withstand voltages.The apparatus committees are responsible for specifying the withstand voltages and the test procedures suitable for the relevant equipment taking into consideration the recommendations of this Standard.NOTE - In IEC 71-2 Application Guide, (under revision), all rules for insulation co-ordination given in this Standard are justified in detail, in particular the association of the standard withstand voltages with the highest voltage for equipment. When more than one set of standard withstand voltages is associated with the same highest voltage for equipment, guidance is provided for the selection of the most suitable set.1A.1 Power transformers and reactorsThis Clause applies to all liquid-filled power transformers, auto-transformers, booster transformers, load-tap-changing transformers, series-voltage regulators, grounding transformers, phase-shifting transformers, and shunt reactors. This Clause deals with the rated insulation levels and dielectric test prescriptions for this equipment.Dielectric tests for equipment covered by this Clause are generally made in accordance with the requirements of CSA Standard CAN/CSA-C88. Impulse tests, unless otherwise noted, shall precede the low-frequency tests. While all impulse tests are standard impulse withstand tests (as defined in Clause 5.3 of this Standard), the number of impulses is not given, nor, except as noted above, is the order in which the tests are to be carried out. For these and other details the reader should refer to CSA Standard CAN/CSA-C88.1A.2 Distribution transformersThis Clause applies to all liquid-filled distribution transformers, types ONAN and LNAN, rated at 1000 kV?A and below for single-phase and 3000 kV?A and below for three-phase, with 36 kV highest voltage for equipment and below. This Clause deals with rated insulation levels and dielectric test prescriptions for this equipment, and addresses the requirements of CSA Standard CAN/CSA-C2. Dielectric tests for equipment covered by this Clause are generally made in accordance with the requirements of the latter Standard. This Clause also provides the dielectric requirements for self-protected transformers.1A.3 Dry-type transformersThis Clause applies to single-phase and three-phase dry-type transformers with highest voltage for equipment from 1 to 46 kV. This Clause deals with rated insulation levels and dielectric test prescriptions for this equipment, and is based on CSA Standard C9.1A.4 Capacitor voltage transformerThis Clause applies to all capacitor voltage transformers intended to be connected between line and earth, composed essentially of a capacitor divider and an electromagnetic device. The capacitor voltage transformer may have provision for power line carrier coupling. This Clause will also be valid for capacitor dividers used as coupling capacitors. It does not apply to field-adjusted capacitance potential devices, including bushing potential devices and out-of-phase potential devices.This Clause deals with rated insulation levels and dielectric test prescriptions for this equipment and addresses the requirements of CSA Standard CAN3-C13.1.1A.5 Instrument transformersThis Clause applies to all instrument transformers comprising elec tromagnetic voltage transformers and current transformers. This Clause deals with rated insulation levels and dielectric test prescriptions for this equipment, and addresses the requirements of CSA Standard CAN3-C13.1A.6 Power circuit breakersThis Clause specifies the rated insulation levels and dielectric tests for single-phase and three-phase power circuit breakers with highest voltage for equipment in Ranges I and II. The test requirements are generally in accordance with those of IEC 60056 and IEC 60694. Where ANSI C37 test requirements differ, these differences are noted.1A.7 DisconnectorsThis Clause specifies the rated insulation levels and dielectric tests for single-phase and three-phase disconnectors with highest voltage for equipment in Ranges I and II. The test requirements are generally in accordance with those of IEC 60129 and IEC 60694. Where ANSI C37.34 test requirements differ, these differences are noted.1A.8 Power transformer and reactor bushingsThis Clause applies to outdoor bushings having lightning-impulse withstand voltages from 110 to 1950 kV installed as components of liquid-filled transformers and reactors installed on systems with Um from 17.5 to 765 kV.This Clause deals with rated insulation levels and dielectric test prescriptions for this equipment and addresses the requirements of CSA Standard CAN/CSA-C88.1.