IEC +A+A(E). Edition consolidated with amendments and This English-language version is derived from the. This standard applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of. Find the most up-to-date version of IEC at Engineering

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NOTE 2 A volume may consist of several permanently connected gas-filled compartments.

Guide for application of IEC 62271-100 and IEC 60694. Part I and II

Each drawing or data schedule shall be uniquely referenced and shall contain a statement ie the effect that the manufacturer guarantees that the drawings or data schedules truly represent the switchgear and controlgear to be tested.

This standard applies to all high-voltage switchgear and controlgear except as otherwise specified in the relevant IEC standards for the particular type of switchgear and controlgear. The “common values” as used in tables 1a and 1b apply to phase-to-earth, between phases and across the open switching device, if not otherwise specified in this standard.

Equipment tested at one height above ground surface level will be deemed to be satisfactory if mounted at a greater height above ground surface level when in service.

The case, tank, frame and other normally earthed parts shall be connected to earth. Definitions, test and procedure requirements IEC If the insulation of a coil is made of several different insulating materials, the permissible temperature rise of the coil shall be taken as that for eic insulating material with the lowest limit of temperature rise.

The iiec share is specified in 6. The following test procedure shall be followed: The thermometers or thermocouples shall be protected against air currents and undue influence of heat.

Other rated characteristics may be necessary and will be specified in the relevant IEC standards. Other connectors shall comply with the requirements of the applicable parts of IEC Idc On contact oec, oxidation may occur which decreases the effective current-carrying capabilities. The connecting point shall be marked with the “protective earth” symbol, as indicated by symbol No. Parts of high-voltage switchgear and controlgear housing compressed gas shall comply with the requirements laid down in the relevant IEC standards.


It is recommended 660694 parts be tested in sequence, starting with first connected part. General definitions and test requirements IEC Care shall be taken to ensure that no damage is caused to iev surrounding insulating materials. 6694 reference given above is to be applied in the present case.

For particular applications, different values may be specified to the manufacturer in accordance with clause 9 of the relevant equipment standard. P liq the drop in pressure in a given time caused by the leakage rate F liq without replenishment 3.

Means shall be provided to enable gas systems to be safely replenished whilst the equipment is in service. Supplementary requirements for fuses for use by authorized persons fuses mainly for industrial application IEC In addition a means of charging a spring or weight by hand shall be provided if specified to the manufacturer; such means shall comply with 5.

This identification may be limited to the ends of the conductors.

The method and extent of identification 60964 conductors, for example by numbers, colours or symbols, is the responsibility of the manufacturer. Rapid temperature changes should be taken into account. The manufacturer should take every care so that, by appropriate circuit design and protections, internal faults or overload conditions will not give rise to fire hazard.

Pilot switches, for example pressure switches, temperature switches, etc. Where a user has no specific local requirements, it is recommended that the colouring and labelling of any indicator lights be in accordance with these two publications.

Ancillary equipment — Section One: The testing laboratory shall iwc that drawings and data schedules adequately represent the essential details and parts of the switchgear and controlgear to be tested, but shall not be responsible for the accuracy of the detailed information.


Where a component may need adjustment during its service life, easy access should be considered without danger of electrical shock.

When, however, the characteristics of the test plant are such that the peak and r. They are listed in annex G. Procedure C of IEC may be applied as an alternative to the 15 impulses withstand test. This concept as defined does not apply to items consisting of software only.

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If it is necessary, a value lower or higher than 1 s may be chosen. Thermal electrical relays IEC Consolidated editions The IEC is now publishing consolidated versions of its publications.

The permissible values shall be given by the manufacturer. A complete secondary system may consist of parts belonging to both classes. Where contact with a heater or shield can occur accidentally, the surface temperature shall not exceed the temperature-rise limits for accessible parts which need not be touched in normal operation, as specified in table 3.

Manual control switches, for example push-buttons, rotary switches, etc. NOTE 2 Non-vertical insulators liable to be covered with melting polluted snow may require a longer creepage distance. Table 8 — Example of grouping of type tests Group 1 Type tests Dielectric tests on main, auxiliary and control circuits Radio interference voltage r. The IEC shall not be held responsible for identifying any or all such patent rights.

Terminal blocks for copper conductors IEC Switchgear and controlgear with the exception of d. This results in an increased ic resistance or even no conduction at very low voltage while no problems are observed at higher voltage. Frequency meters shall comply with the requirements of IEC AC semiconductor motor controllers and starters IEC The assessment criterion takes into account the non-linearity of the resistance.