Standard No.:	GB/T 33708-2017
Chinese Name:	静止式直流电能表
English Name:	Static meter for direct current energy
Professional Classification:	N22 Electric energy measurement and load control system
ICS Classification:	17.220.20 Measurement of electrical and magnetic quantities
Issued by:
Issued on:	2017-05-12
Implemented on:	2017-12-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	14000 words
Price(USD):	420 (USD)
Delivery:	via email in 1-3 business day

1 Scope

This standard specifies the terms, requirements and test methods and inspection rules of static meter for direct current energy (hereinafter referred to as instrument).

This standard is only applicable to the newly manufactured instrument with input voltage not greater than 1000V.

This standard is not applicable to the following conditions:

——instrument with input voltage greater than 1000V;

——DC standard instrument;

——portable instrument.

2 Normative References

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

GB/T 4798.1-2005 Environmental Conditions Existing in the Application of Electric and Electronic Products - Section 1: Storage
GB/T 4798.2-2008 Environmental Conditions Existing in the Application of Electric and Electronic Products - Section 2: Transportation
GB/T 13384-2008 General Specifications for Packing of Mechanical and Electrical Product
GB/T 16935.1-2008 Insulation Coordination for Equipment within Low-voltage Systems - Part 1: Principles Requirements and Tests
GB/T 17215.211-2006 Electricity Metering Equipment (a.c.) - General Requirements, Tests and Test Conditions - Part 11: Metering Equipment
GB/T 17215.301-2007 Particular Requirements for Multi-function Electricity Meters
GB/T 17215.321-2008 Electricity Metering Equipment (a.c.) - Particular Requirements - Part 21: Static Meters for Active Energy (Classes 1 and 2)
GB/T 17215.421-2008 Electricity Metering Equipment (a.c) - Tariff and Load Control - Part 21: Particular Requirements for Time Switches
GB/T 17626.11-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests
GB/T 17626.29-2006 Electromagnetic Compatibility(EMC) - Testing and Measurement Techniques - Voltage Dips Short Interruptions and Voltage Variations on d.c. Input Power Port Immunity Tests
GB/T 17627.1-1998 High-voltage Test Techniques For Low-voltage Equipment Part 1: Definitions, Test and Procedure Requirements
QC/T 413-2002 Technical Specification for Electronic Equipment for Automobiles
IEC 61010-1: 2010 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use C Part 1: General Requirements

3 Terms and Definitions

For the purpose of this document, the following terms and definitions apply.

3.1

static meter for direct current energy

energy meter, which generates output directly proportional to the measured energy because the DC current (or voltage representing DC current) and DC voltage acts on solid (electronic) elements

Note: according to connection mode, it may be classified into direct connected meter and indirect connected meter.

3.2

direct connected meter

instrument with measuring element of voltage and current being directly connected to measured DC circuit

3.3

indirect connected meter

instrument with the measuring element of voltage or current being connected to measured DC circuit through one or more conversion devices

Notes:

1 Conversion device may be one kind among DC transducer, mutual inductor, voltage divider or splitter and may also be the composite application of them.