GB/T 18216.12-2025Electrical safety in low voltage distribution systems up to 1 000 V AC and 1 500 V DC - Equipment for testing, measuring or monitoring of protective measures - Part 12: Power metering and monitoring devices(PMD) (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

This document is the standard for electrical safety protection measures for low voltage power distribution systems with an AC voltage of 1000V and a DC voltage of 1500V and below.

Part 12 of "Test, Measuring or Monitoring Equipment". GB/T 18216 has published the following parts.

--- Part 1: General requirements;

--- Part 2: Insulation resistance;

--- Part 3: Loop impedance;

--- Part 4: Grounding resistance and equipotential grounding resistance;

--- Part 5: Resistance to earth;

--- Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems;

--- Part 7: Phase sequence;

--- Part 8: Insulation monitoring devices in IT systems;

--- Part 9: Insulation fault location equipment in IT systems;

--- Part 10: Combined measuring equipment for testing, measuring or monitoring protective measures;

--- Part 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems;

--- Part 12: Power measurement and monitoring devices (PMD).

This document replaces GB/T 18216.12-2010 "Electrical safety of low voltage power distribution systems with AC 1000V and DC 1500V and below" Test, measuring or monitoring equipment for protective measures Part 12: Electric quantity measuring and monitoring devices (PMD)" and GB/T 18216.12-Compared with 2010, in addition to structural adjustments and editorial changes, the main technical changes are as follows.

--- Added requirements for power measurement and monitoring functions (PMF) in the scope and requirements for devices with embedded power measurement and monitoring functions the additional requirements for the EPMF (see Chapter 1) and the specific terms are given (see Appendix H);

--- PMD-A was deleted because GB/T 39853 series of national standards mainly covers this type of device;

--- Added three PMD categories and gave the minimum functional requirements for each category (see 4.3).

This document is equivalent to IEC 61557-12:2021 "Electrical safety standards for low voltage power distribution systems up to 1000 V AC and 1500 V DC" Test, measuring or monitoring equipment for complete protective measures - Part 12: Electrical quantity measuring and monitoring devices (PMD)".

The following minimal editorial changes were made to this document.

--- Correct the sign of the total harmonic distortion rate of the root mean square value of current in 3.5.1 from "THD_R" to "THD_Ri";

---Correct the units in Table 24, Table 32, Table 33, Table 34, Table 38, Table 39, Table 40, Table 42 and Table 43 to %.

Introduction

IEC 60364-6 specifies the initial testing, continuous monitoring and commissioning of electrical installations in TN, TT or IT systems.

In addition to specifying the general criteria for carrying out these tests, IEC 60364-6 also includes the Only in a few cases, such as when measuring insulation resistance, does IEC 60364-6 include the measurement equipment used.

Circuit diagrams given as examples in IEC 60364-6 and referenced in the main body of the document are generally not applicable to Actual use.

When dangerous voltages are present in electrical installations, or when equipment is used improperly or is damaged, testing can easily cause accidents.

Therefore, technicians need to rely on measuring devices that ensure the safety of the measuring method in addition to simplifying the measurement.

Applying the general rules for safety of electrical and electronic measuring equipment (IEC 61010-1) to perform protective measures testing is not sufficient in itself.

Measurements during power installation may cause harm not only to the technicians but also to third parties due to different measurement methods.

Similarly, in order to obtain an objective assessment of the equipment, for example, periodic testing, continuous insulation monitoring or in the case of performance assurance, an important prerequisite is to obtain reliable and comparable measurement results using measuring devices from different manufacturers.

GB/T 18216 Test Method for Electrical Safety Protection Measures for Low Voltage Distribution Systems with AC 1000V and DC 1500V and Below the purpose of the "Testing, Measuring or Monitoring Equipment" is to provide uniform principles for compliance with the above characteristics. These principles apply to nominal voltage AC Measuring and monitoring equipment for electrical safety tests and performance tests in systems with 1000V and DC 1500V and below. GB/T 18216 it is planned to consist of 17 parts.

--- Part 1: General requirements. The purpose is to establish the low voltage distribution system with nominal voltage AC 1000V and DC 1500V and below General requirements for test equipment used for measuring and monitoring electrical safety in systems.

--- Part 2: Insulation resistance. The purpose is to establish the insulation resistance of equipment and electrical installation equipment in the non-excited state.

Relevant requirements for resistance equipment.

--- Part 3: Loop impedance. The purpose is to establish the measurement between the line conductor and the protective conductor, between the line conductor and the neutral conductor, or between the two Requirements for loop impedance equipment between line conductors.

--- Part 4: Ground resistance and equipotential ground resistance. The purpose is to establish the ground conductor of the measuring equipment, the protective ground conductor and and related requirements for the resistance of equipotential bonding conductors.

--- Part 5: Earth resistance. The purpose is to establish the relevant requirements for measuring equipment using AC voltage to measure earth resistance.

--- Part 6: Effectiveness of residual current devices (RCD) in TT, TN and IT systems. The purpose is to establish the effectiveness of residual current devices (RCD) in TT, TN and IT systems.

Requirements for measuring equipment for the effectiveness of protective measures taken by residual current devices in TN and IT systems.

--- Part 7: Phase sequence. The purpose is to establish the requirements for measuring equipment used to test the phase sequence of three-phase distribution systems.

--- Part 8: Insulation monitoring devices in IT systems. The purpose is to establish relevant requirements for insulation monitoring devices in IT systems.

--- Part 9: Insulation fault location equipment in IT systems. The purpose is to establish the relevant About requirements.

--- Part 10: Combined measuring equipment for testing, measuring or monitoring protective measures. The purpose is to establish within a device Combined measurement that combines several measurement functions or test methods that conform to the individual parts of this series of standards Equipment requirements.

--- Part 11: Effectiveness of residual current monitors (RCM) in TT, TN and IT systems. The purpose is to establish Requirements for equipment for testing the effectiveness of residual current monitors (RCM) installed in power distribution systems.

--- Part 12: Electricity measurement and monitoring devices (PMD). The purpose is to establish a comprehensive system for measuring and monitoring electrical parameters in power distribution systems.

Relevant requirements for combined electrical quantity measuring and monitoring devices.

--- Part 13: Hand-held and hand-operated current clamps and sensors for measuring leakage current in distribution systems.

Requirements for hand-held and hand-operated current clamps and sensors for measuring leakage current in systems.

--- Part 14: Equipment for testing the safety of electrical equipment of machinery. The purpose is to specify the equipment for testing the safety of electrical equipment of machinery Special requirements for equipment.

--- Part 15: Functional safety requirements for insulation monitoring devices and insulation fault location equipment in IT systems. The purpose is to specify Functional safety requirements for insulation monitoring devices and insulation fault location equipment in IT systems.

--- Part 16: Equipment for testing the effectiveness of protective measures for electrical equipment and/or medical electrical equipment. The purpose is to specify the test Particular requirements for equipment to ensure the effectiveness of protective measures for electrical equipment and/or medical electrical equipment.

--- Part 17: Non-contact AC voltage indicator. The purpose is to specify the minimum performance of non-contact AC voltage indicators Require.

AC 1000V and DC 1500V and below Electrical safety of low voltage power distribution system Equipment for testing, measuring or monitoring protective measures Part 12: Power measuring and monitoring devices (PMD)

1 Scope

This document specifies the requirements for the measurement and monitoring of various electrical quantities by power measurement and monitoring devices (PMD) within the power distribution system, and optionally these requirements also specify single-phase and three-phase rated voltages up to 1000V AC or 1500V DC Performance of PMD in AC or DC power distribution systems.

These devices may be fixed mounted or portable and are intended for use indoors and/or outdoors.

The power measuring and monitoring devices (PMD) specified in this document provide additional safety information to assist in the verification and Improve the performance of your power distribution systems.

In addition, this document specifies the requirements for measurement functions specifically used to measure and monitor various electrical parameters, referred to as electrical quantity measurement and monitoring functions.

(PMF), can be embedded in devices that are not PMDs and whose main function is not power measurement and monitoring (EPMF).

Annex H describes the requirements for the power measurement and monitoring function (PMF) and the embedded power measurement and monitoring function (EPMF) device.

Additional requirements.

This document describes a power measurement and monitoring device (PMD) for measuring and monitoring electrical parameters, suitable for general industrial and commercial application.

Power measurement and monitoring devices (PMDs) can be associated with sensing devices, such as but not limited to those conforming to the IEC 64869 series of standards.

Instrument transformer or sensor according to IEC 60688.

This document does not address functional safety and cyber security aspects.

This document does not apply to.

--- Electrical measuring equipment conforming to IEC 62053-21, IEC 62053-22, IEC 62053-23 and IEC 62053-24;

---Measurement and monitoring of electrical parameters defined in IEC 61557-2~IEC 61557-9 and IEC 61557-13 or IEC 62020-1;

--- Power quality meters conforming to IEC 62586 (all parts);

--- Direct acting analogue indicating electrical measuring instruments and accessories conforming to IEC 60051 (all parts).

Note 1.Typically, this type of equipment is used for the following applications or for the following general needs.

--- Internal facility energy management, e.g. promoting documents such as ISO 50001 and IEC 60364-8-1;

---Various electrical parameter measurements and/or monitoring;

---Power quality measurement and/or monitoring within commercial/industrial facilities.

Note 2.An electrical parameter measurement and monitoring device usually consists of several functional modules. All or some of the functional modules are combined in one device.

Examples of energy modules are as follows.

---Measure and monitor several electrical appliances simultaneously;

---Energy measurement and/or monitoring, sometimes in compliance with building code requirements;

---Various alarm functions;

---Power quality on the demand side (current harmonics and voltage harmonics, overvoltage/undervoltage, voltage sag and swell, etc.).

Note 3.PMD has historically been called power meter, power monitor, power monitoring device, power monitoring device, power analyzer, multi-function meter, multi-function Measuring equipment, energy meters.

Note 4.Metering, measurement and monitoring applications are described in Appendix A.