IEC 60694 PDF


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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C Closed pressure system for gas The switchgear and controlgear shall be considered to have passed the test if no disruptive discharge occurs.

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Annex E gives some information, examples and guidance for tightness. If measuring impedances different from those specified iex CISPR publications are used, they shall be not more than ? NOTE 2 Non-vertical insulators liable to be covered with melting polluted snow may require a longer creepage distance. Terminal blocks for copper conductors IEC This results in an increased contact resistance or even no conduction at very low voltage while no problems are observed at higher voltage.

Manual control switches, for example ie, rotary switches, etc.

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Such characteristics and their symbols are: Requirements for any contacts of manual control switches that are made available to the user are contained in 5. Otherwise, the contacts shall be regarded as “bare”. For most of the rated voltages, several rated insulation levels exist to allow for application of different performance criteria or overvoltage patterns.

The maximum actuating force required for manually charging a spring or weight shall not exceed N. The auxiliary equipment shall be tested at its rated supply voltage U a or at its rated current. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared ieec publication, 60964 well as the list of publications issued, is also available from the following: Switches, disconnectors, switch-disconnectors and fuse-combination units IEC Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Electromechanical contactors and motor-starters 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.


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Insulation tests for electrical relays IEC The time for the whole test may be shortened by preheating the circuit with a higher value of current, except where the measurement of thermal time constant is required.

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 the insulating material with the lowest limit of temperature rise.

The operational characteristics of the auxiliary contacts should comply with one of the classes shown in table Vibration, shock, bump and seismic tests on measuring relays and protection equipment — Section One: Tungsten filament lamps shall comply with the requirements eic IEC The test arrangement shall be noted in the test report. This criteria will normally be met after a test iwc of five times the thermal time constant of the tested device.

As no IEC standard exists for shunt releases, they should satisfy the requirements of the relevant equipment standard. For switchgear and controlgear having only internal insulation, the ambient air conditions are of no influence and the correction factor K t shall not be applied.


The supply system should preferably be referenced to earth i. NOTE 1 The R 10 series comprises the numbers 1 — 1,25 — 1,6 — 2 — 2,5 — 3,15 — 4 — 5 — 6,3 — 606694 and their products by 10 n.

General terms on measurements in electricity IEC NOTE Several gas-filled compartments may be permanently interconnected to form a common gas-system gastight assembly. In the particular case of maintenance in a compartment when adjacent compartments contain gas under pressure, the permissible gas leakage rate across partitions should also be isc by the manufacturer, and the time between replenishments shall be not less than one month.

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

Requirements for contactor and motor-starter contacts available to the user, if any, are contained in 5. In the case of IP5X category 2 of Each test shall be preceded by a no-load operation of the mechanical switching device and, with the exception of earthing switches, by measurement of the resistance of the main circuit.

If only the protection against access to hazardous parts is requested or if it is higher than that indicated by the first characteristic numeral, an additional letter may be used as in table 6. Some insulating materials retain a iecc after an impulse test and for these cases care should be taken when reversing the polarity.