What is BS EN IEC 61557-12 -Requirements for electrical safety in power metering and monitoring devices about?
BS EN IEC 61557-12 discusses electrical safety in low voltage distribution systems up to 1000 V AC and 1500 V DC and equipment for testing, measuring, or monitoring protective measures with a focus on power metering and monitoring devices (PMD).
BS EN IEC 61557-12 is the 12th part of the multi-series on electrical safety in low voltage distribution systems that specifies requirements for power metering and monitoring devices (PMD) that measure and monitor the electrical quantities within electrical distribution systems, and optionally other external signals. These requirements also define the performance in single- and three-phase AC or DC systems having rated voltages up to 1 000 V AC or up to 1 500 V DC.
Note 1: BS EN IEC 61557-12 is not applicable for:
- Electricity metering equipment that complies with IEC 62053-21, IEC 62053-22, IEC 62053-23, and IEC 62053-24. Nevertheless, uncertainties defined in this document for active and reactive energy measurement are derived from those defined in IEC 62053 (all parts)
- The measurement and monitoring of electrical parameters defined in IEC 61557-2 to IEC 61557-9 and IEC 61557-13 or in IEC 62020
- Power quality instrument (PQI) according to IEC 62586 (all parts)
- Devices covered by IEC 60051 (all parts) (direct acting analogue electrical measuring instrument).
Note 2: BS EN IEC 61557-12 does not address functional safety and cyber security aspects.
Who is BS EN 61557-12 - Requirements for electrical safety in power metering and monitoring devices for?
BS EN 61557-12 on the requirements for electrical safety in power metering and monitoring devices is useful for:
- Authorities working with the power distribution system
- Power metering and monitoring devices manufacturers
- Electrical engineers
Why should you use BS EN 61557-12 - Requirements for electrical safety in power metering and monitoring devices?
A Power Monitoring Device measures power consumption to support energy-saving activities. Electricity is not visible, but it is a familiar, convenient form of energy that is converted into heat, light, sound, power, or other forms and can be used.
The devices on the current market have different characteristics, which need a common system of references. Therefore, there is a need for BS EN 61557-12 to facilitate the choices of the end-users in terms of performance, safety, interpretation of the indications, etc.
BS EN IEC 61557-12 provides a basis by that such devices can be specified and described, and their performance evaluated. Power metering and monitoring devices (PMD), as defined in BS EN IEC 61557-12, give additional safety information, which aids the verification of the installation and enhances the performance of the distribution systems.
The power metering and monitoring devices (PMD) for electrical parameters described in BS EN IEC 61557-12 are used for general industrial and commercial applications. Using BS EN IEC 61557-12 best practices guidance can ensure the safety of the user/manufacturer.
