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International Electrotechnical Commission, 02/01/2023
Publisher: IEC
File Format: PDF
$208.00$417.00
Published:01/02/2023
Pages:218
File Size:1 file , 3.1 MB
Note:This product is unavailable in Ukraine, Russia, Belarus
This part of IEC 60255 specifies the product safety requirements for measuring relays and protection equipment having a rated AC voltage up to 1 000 V, or a rated DC voltage up to 1 500 V. Above these limits, IEC 60664-1 is applicable for the determination of clearance, creepage distance and withstand test voltage.
This document specifies essential safety requirements to minimize the risk of fire and hazards caused by electric shock or injury to the user and property. This document specifies only product safety requirements; functional performance of the equipment is not covered.
This document covers all the ways in which the equipment can be mounted and used in cabinets, racks and panels. This document also applies to auxiliary devices such as shunts, series resistors, transformers, auxiliary control panels, display devices, etc., that are used in conjunction with measuring relays and protection equipment and are tested together.
It is possible that ancillary equipment such as network switches used in conjunction with measuring relays and protection equipment needs to comply with additional safety requirements.
This document does not specify the implementation of individual equipment, circuits and components.
This document applies to equipment designed to be safe at least under the following environmental conditions: – indoor use; – altitude up to 2 000 m, in accordance with IEC 60255-1; – rated ambient temperature range, in accordance with IEC 60255-1; – maximum external relative humidity, in accordance with IEC 60255-1; – operating range of auxiliary energizing voltage in accordance with IEC 60255-1; – applicable overvoltage category; – applicable pollution degree of the intended environment (pollution degree 2 in most cases).
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