Electricity metering equipment (AC) – General requirements, tests and test conditions – Part 31: Product safety requirements and tests

Document Number: NL CYS EN 62052 31 : 2019
Sector: Metrology and Measurement. Physical Phenomena
TC: NL TC 3009
ICS: 17.220 - 91.140.50
This part of IEC 62052 specifies product safety requirements for equipment for electrical energy measurement and control. NOTE 1 For other requirements, see the relevant standards. This International Standard applies to newly manufactured metering equipment designed to measure and control electrical energy on 50 Hz or 60 Hz networks with a voltage up to 600 V, where all functional elements, including add-on modules are enclosed in or form a single case. NOTE 2 The voltage mentioned above is the voltage line-to-neutral derived from nominal voltages. See Table 7. This International Standard also applies to metering equipment containing supply and load control switches, but only those which are electromechanical in operation. NOTE 3 For components and sub-assemblies, see Clause 13. When such equipment is designed to be installed in a specified matching socket, then the requirements apply to, and the tests shall be performed on, equipment installed in its specified matching socket. However, requirements for sockets and inserting / removing the meters from the socket are outside the scope of this standard. This International Standard is also applicable to auxiliary input and output circuits. NOTE 4 Examples are impulse inputs and outputs, control inputs and outputs, circuits for meter data exchange. In this standard distinction is made between: • electromechanical meters, static meters and equipment for tariff and load control; • direct connected, current transformer operated, voltage and current transformer operated meters; • protective class I and protective class II equipment; • wall or cabinet mounted, rack mounted and panel mounted equipment; • equipment intended for indoor use and outdoor use. Equipment used in conjunction with equipment for electrical energy measurement and control may need to comply with additional safety requirements. See also Clause 13. NOTE 5 Examples are telecommunication modems and customer information units. This International Standard does not apply to: • equipment where the voltage line-to-neutral derived from nominal voltages exceeds 600 V; • portable meters; NOTE 6 Portable meters are meters that are not permanently connected.