GB/T 17215.321-2021: Electricity metering equipment (AC) - Particular requirements - Part 21: Static meters for active energy(classes A, B, C, D and E)

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Scope

This Part of GB/T 17215.3 specifies the standard electricity value, structure, meter's
marking and documentation, metering performance, climate environment, external
influence, metering performance protection, electrical requirements, for static meters
for active energy.
This Part of GB/T 17215.3 is only applicable to the newly manufactured static meters
for active energy, which is used to measure the AC active energy, in 50 Hz or 60 Hz
power grid, AND has an accuracy class of A, B, C, D, E. (below referred to as "meter").
It is also applicable to other type tests.
Note 1: For other requirements (such as structure, EMC, reliability), refer to GB/T 17215.211-
2021, as well as the relevant parts of GB/T 17215.911, GB/T 17215.921, GB/T 17215.9311,
GB/T 17215.9321, GB/T 17215.941.
This Part applies to newly manufactured electricity metering equipment, which is used
to meter and control electrical energy in the power grid, that has a voltage not exceeding
600 V. All special functional units, except the electrical energy measuring function, can
be integrated in the meter enclosure, OR can form a separate enclosure.
Note 2: The above voltage is the line-to-neutral line voltage, which is derived from the nominal
voltage, as shown in Table 7 of IEC 62052-31:2015.
If the meter has functions other than metering active energy, for example:
- Measurement of voltage amplitude, current amplitude, power, frequency, power
factor, etc.;
- Measurement of power quality parameters;
- Load control function;
- Data communication interface.
If encapsulated in the meter enclosure, the relevant standards can apply to these
functional requirements. However, the requirements for these functions are not within
the scope of this Part.
Note 3: The requirements for power monitoring devices and measurement functions (such as
voltage amplitude, current amplitude, power, frequency, etc.) have been covered in GB/T
18216.12; BUT equipment, that complies with GB/T 18216.12, is not suitable as a payment
meter, unless they also meet the accuracy class requirements of this Part.
Note 4: The requirements for power quality monitoring meters have been covered in IEC
62586-1. The measurement methods for power quality monitoring functions have been covered
in GB/T 17626.30-2012. The test requirements for power quality monitoring functions are
covered in IEC 62586-2.
The requirements of this Part apply, if the meter is designed to be mounted on a
specified mating (meter) socket or rack. The test is performed, with the meter mounted
on the specified mating socket or rack. However, the requirements for such socket or
rack are outside the scope of this Part.
Note 5: Examples of rack-mounted meters are: rail-mounted meters, panel-mounted meters, etc.
If the meter is designed to install a separated indicator display, the requirements of this
Part apply; meanwhile, the meter can be connected to its separated indicator display for
testing, unless otherwise specified.
If the meter has more than one current circuit per phase (for example: multi-unit meter),
the requirements of this Part apply to all current circuits of any current-measuring unit,
in the meter enclosure.
This Part also applies to auxiliary input and output circuits, operating indicators, test
outputs of electricity metering equipment.
Note 6: For example, pulse input and output, control input and output, power test output.
This Part distinguishes:
- Single-phase meters and multi-phase meters;
- Directly connected meters and meters connected via a transformer;
- Meters with integrated indicating displays and meters with separated indicating
displays;
- Indoor and outdoor meters.
This Part does not apply to:
- The meters, which have a line-to-neutral voltage in excess of 600 V derived from
the nominal voltage;
4.4 Power consumption
Power consumption shall comply with the requirements, test conditions, test procedures,
acceptance criteria, which are specified in 4.4 of GB/T 17215.211-2021.

Basic Data

Standard ID	GB/T 17215.321-2021 (GB/T17215.321-2021)
Description (Translated English)	Electricity metering equipment (AC) - Particular requirements - Part 21: Static meters for active energy(classes A, B, C, D and E)
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	N22
Word Count Estimation	20,251
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration