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GB/T 34570.2-2017Safety for rechargeable battery packs and chargers for electric tools - Part 2: Safety for chargers (English PDF)

电动工具用可充电电池包和充电器的安全第2部分：充电器的安全

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

September 29, 2017

Implementation date

April 1, 2018

Scope

GB/T 34570.2-2017 is the English-translated version of 电动工具用可充电电池包和充电器的安全第2部分：充电器的安全.

GB/T 34570.2-2017 is the Chinese standard "Safety for rechargeable battery packs and chargers for electric tools - Part 2: Safety for chargers".

Its scope clause reads: This part of GB/T 34570 specifies the safety of charger or charging unit used for charging in a conductive way the detachable or separable battery pack of motor-operated hand-held, transportable electric tools and lawn and garden tools powered by rechargeable battery.

This part is applicable to indoor or outdoor portable or fixed chargers or charging units supplied by mains supply at a voltage below single-phase a.c. 250 V. This part also covers the requirements for the safety of chargers in battery tools which can be directly connected to mains supply or non-isolated power for operation and/or charging.

This part is not applicable to: - - Battery charging piles and charging devices used for electric vehicles; - - Charger of power supply unit used for electronic equipment; - - Charger of electronic flash equipment and power supply unit used for photography; - - Charger of battery used for toys; - - Battery charger used in special sites, e.g., sites with erosive and explosive gases (dusts, steams or combustible gases).

Its clauses include terms and definitions; general requirements; general conditions of test; classification; marking and description.

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Document preview — GB/T 34570.2-2017

National Standard of the People's Republic of China

ICS: 25.140.20
Classification: K 64

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword i
1 Scope
2 Normative References
3 Terms and Definitions
4 General Requirements
5 General Conditions of Test
6 Classification
7 Marking and Description
8 Electric Safety
9 Abnormal Operations
10 Mechanical Strength
11 Power Connection
12 Screw and Connecting Piece
13 Toxic and Hazardous Substances

1 Scope

This part of GB/T 34570 specifies the safety of charger or charging unit used for charging in a conductive way the detachable or separable battery pack of motor-operated hand-held, transportable electric tools and lawn and garden tools powered by rechargeable battery.

This part is applicable to indoor or outdoor portable or fixed chargers or charging units supplied by mains supply at a voltage below single-phase a.c. 250 V.

This part also covers the requirements for the safety of chargers in battery tools which can be directly connected to mains supply or non-isolated power for operation and/or charging.

This part is not applicable to:

- - Battery charging piles and charging devices used for electric vehicles;

- - Charger of power supply unit used for electronic equipment;

- - Charger of electronic flash equipment and power supply unit used for photography;

- - Charger of battery used for toys;

- - Battery charger used in special sites, e.g., sites with erosive and explosive gases (dusts, steams or combustible gases).

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 1002-2008 Single Phase Plugs and Socket-outlets for Household and Similar Purposes - Types Basic Parameters and Dimensions

GB/T 2099.1-2008 Plugs and Socket-outlets for Household and Similar Purposes - Part 1: General Requirements

GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products - Part 2: Tests Methods - Test Fc: Vibration (Sinusoidal)

GB/T 2423.55-2006 Environmental Testing for Electric and Electronic Products - Part 2: Test Methods - Test Eh: Hammer Tests

GB/T 3883.1-2014 Safety of Motor-operated Hand-held, Transportable Electric Tools and Lawn and Garden Tools - Part 1: General Requirements

GB/T 4208-2008 Degrees of Protection Provided by Enclosure (IP Code)

GB/T 4343.2-2009 Electromagnetic Compatibility - Requirements for Household Appliances Electric Tools and Similar Apparatus - Part 2: Immunity - Product Family Standard

GB/T 5013.1-2008 Rubber Insulated Cables of Rated Voltages Up To and Including 450/750 V - Part 1: General Requirements

GB/T 5023.1-2008 Polyvinyl Chloride Insulated Cables of Rated Voltages Up To and Including 450/750V - Part 1: General Requirements

GB/T 5169.11-2006 Fire Hazard Testing for Electric and Electronic Products - Part 11: Glowing/Hot-wire Based Test Methods - Glow-wire Flammability Test Method for End-products

GB/T 5169.16-2008 Fire Hazard Testing for Electric and Electronic Products - Part 16: Test Flames - 50W Horizontal and Vertical Flame Test Methods

GB/T 5169.21-2006 Fire Hazard Testing for Electric and Electronic Products - Part 21: Abnormal Heat - Ball Pressure Test

GB/T 12113-2003 Methods of Measurement of Touch Current and Protective Conductor Current

GB/T 16842-2008 Protection of Persons and Equipment by Enclosures - Probe for Verification

GB/T 16895.21-2011 Low-voltage Electrical Installations - Part 4-41: Protection for Safety - Protection against Electric Shock

GB/T 17626.2-2006 Electromagnetic Compatibility (EMC) - Testing and Measurement Techniques - Electrostatic Discharge Immunity Test

GB/T 17626.4-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Electrical Fast Transient/Burst Immunity Test

GB/T 17626.5-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Surge Immunity Test

GB/T 17626.6-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Immunity to Conducted Disturbances Induced by Radio-frequency Fields

GB/T 17626.11-2008 Electromagnetic Compatibility - Testing and Measurement Techniques - Voltage Dips, Short Interruptions and Voltage Variations Immunity Tests

GB/T 19212.5-2011 Safety of Transformers, Reactors, Power Supply Units and Similar Products for Supply Voltages up to 1,100 V - Part 5: Particular Requirements and Tests for Isolating Transformers and Power Supply Units Incorporating Isolating Transformers

ISO 7010: 2011 Graphical Symbols - Safety Colours and Safety Signs - Registered Safety Signs

Decree of General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China (AQSIQ), No. 32 Measures for the Administration of the Restricted Use of the Hazardous Substances Contained in Electrical and Electronic Products

3 Terms and Definitions

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

Note: unless otherwise specified, the terms "voltage" and "current" refer to the effective values.

3.1 charger

part or whole of charging system contained in an independent shell, with the charger containing at least all energy conversion circuits

Note: in such a case, tools may be charged via a power cord or a built-in plug connected to power socket, an independent charger therefore does not necessarily contain all the charging systems.

3.2 conductive charge

the mode of charging the battery pack by making use of electrical conduction

3.3 d.c. distribution board

board of circuit capable of distributing direct current to socket or terminal

3.4 rated current

input current specified by the producer for the battery charger

3.5 rated input power

input power specified by the producer for the battery charger

3.6 rated output current

output current specified by the producer for the battery charger

3.7 rated output voltage

output voltage specified by the producer for the battery charger

3.8 rated voltage

input voltage specified by the producer for the battery charger

4 General Requirements

The design and structure of charger shall ensure safety work and not cause danger to human or surrounding environment in intended use and reasonably foreseeable use.

Whether it is acceptable or not shall be determined by carrying out all the relevant tests, with all relevant requirements specified in this part met.

5 General Conditions of Test

5.1

The test meeting this part is type test.

5.2

All tests shall be carried out on charger according to the clause sequence, and the charger shall be able to pass all the relevant tests.

5.3

The test shall be carried out in the site without ventilation and with ambient temperature of (20±5)°C.

If the temperature reachable by any part is limited by temperature sensing device or influenced by ambient temperature, the ambient temperature shall be maintained at (23±2) °C.

5.4

The chargers shall be tested at rated voltage and rated frequency in delivery state; for chargers intended to be connected to fixed wiring with flexible cord, they shall be tested with the applicable flexible cord connected to them.

5.5

The parts working at safety extra lower voltage in chargers shall meet the relevant requirements of Type III structure.

5.6

If Type I chargers have ungrounded accessible metal parts which are not separated from the live parts with a grounded intermetallic metal part, they shall meet the relevant requirements of Type II structure.

If Type I chargers have accessible non-metallic parts, they shall meet the relevant requirements of Type II structure, unless the non-metallic parts are separated from the live parts with a grounded intermetallic metal part.

6 Classification

6.1

The charger shall belong to one of the following categories when classified in accordance with electric shock protection:

- - Type I charger;

- - Type II charger.

Compliance is inspected by observation and relevant test.

6.2

Chargers marked with an IP code shall have appropriate protection class in accordance with GB/T 4208-2008.

Compliance is inspected by observation and relevant test.

6.3

There are two modes for charging battery tools or battery packs:

a) Power the built-in charging device of the tools directly from the single-phase AC network through the connector and charge with alternate current;

b) Power the charger from the single-phase AC network through the connector and charge the tool or battery packs with direct current.

The charger or device used to charge the battery tool shall belong to one of the following types:

- - Portable type;

- - Fixed type.

7 Marking and Description

7.1

The charger shall be marked with the following information:

- - The rated output voltage, V;

- - The rated output current, A or mA;

- - The rated voltage, V;

- - Source type symbol, which may be omitted if rated frequency or rated frequency range is marked. The source type symbol shall be marked immediately behind the mark of rated voltage;

- - The rated input power/current, W/A;

- - The rated current of the protective device installed at the D.C. distribution board, A;

- - The polarity of the output terminal, with the anode expressed by "+" and the cathode by "-";

Note: for chargers which can avoid wrong polarity connection, the polarity marks are not necessary;

- - Type II structure symbol (only applicable to Type II charger);

- - Protection class code (IP code) for preventing of hazardous water penetration;

- - Time-current characteristics of delay action fuse;

The following contents shall be marked if the output is no less than 20VA:

- - Read instructions before charging;

- - For indoor use or providing protection against rain (excluding charger or device with the enclosure protection class no less than IPX 4);

Chargers with switches shall be marked with following contents:

- - The maximum turn-on time;

- - The minimum "turn-off" time or the maximum ratio of the "turn-on time" to the "turn-off" time.

If the charger can be adjusted to a different rated DC output voltage, the output voltage that can be tuned to shall be clearly visible.

Compliance is inspected by observation.

The D.C. distribution board shall be marked with the following contents:

- - The maximum output current of each output circuit, A;

- - The type of any accessory power supply that can be connected.

Compliance is inspected by observation.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 16 pages — is available in the English PDF.

Referenced standards

Cited by

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