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GB/T 46048-2025Electric earth-moving machinery — Methods of noise test (English PDF)

电动土方机械　噪声测试方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

March 1, 2026

Scope

GB/T 46048-2025 is the English-translated version of 电动土方机械　噪声测试方法.

GB/T 46048-2025 is the Chinese national standard covering measuring the noise of a battery or cable-fed excavator or loader — the test site and the microphone positions, the operating cycles that stand in for work now that there is no engine speed to set them by, the sound power and the operator ear position, and the tonal components a drive whine introduces. With the engine gone, the noise that remains is a different noise, and the old test cycles no longer describe it. First edition, under the China Machinery Industry Federation. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.

Document preview — GB/T 46048-2025

National Standard of the People's Republic of China

ICS: 53.100
Classification: P 97

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

PrefaceIII
1 Scope1
2 Normative references1
3 Terms and Definitions1
4 measuring instruments1
5 Test Environment2
6 Measurement of time-averaged A-weighted sound pressure level2
7 Regulations on the configuration, operation and position of the machine3
8 Determination of A-weighted sound power level and driver position emission sound pressure level4
9 Determination of Loudness, Sharpness and Prominence Ratio at the Driver's Position5
10 Recorded Information5
11 Reported Information6
Appendix A (Informative) Electric Earthmoving Machinery Noise Test Record Sheet7
Appendix B (Informative) Measurement and determination of loudness, sharpness and prominence ratio at the driver's position10
Reference14

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.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Earthmoving Machinery (SAC/TC334).

This document was drafted by: Jiangsu Xugong Guozhong Laboratory Technology Co., Ltd., Tianjin Engineering Machinery Research Institute Co., Ltd., Shandong Lingong Machinery Cheng Machinery Co., Ltd., Shaanxi Tongli Heavy Industry Co., Ltd., Boreton (Shandong) New Energy Vehicle Co., Ltd., Shandong Kenshi Heavy Industry Machinery Co., Ltd., Fujian Jingong New Energy Technology Co., Ltd., Inner Mongolia Northern Heavy Duty Truck Co., Ltd., Longgong (Fujian) Machinery Co., Ltd.

Shantui Construction Machinery Co., Ltd., Xiamen XGMA Machinery Co., Ltd., China Machinery Science and Technology (Beijing) Vehicle Inspection Engineering Research Institute Co., Ltd.

Company, Shanxi Taizhong Engineering Machinery Co., Ltd., Guangxi Liugong Machinery Co., Ltd., Sinomach Changlin Co., Ltd., Hyde Acoustics (Shanghai) Technology Co., Ltd., Hubei Huazhong Electric Power Technology Development Co., Ltd., and Shandong Hi-Speed Engineering Equipment Co., Ltd.

The main drafters of this document are: Zhuang Chao, Chen Baoqing, Xu Shoujun, Zhao Qiyuan, Lu Daiji, He Guangmin, Zhao Jianjie, Song Liming, Le Furong, Ding Jiamin, Huang Yanqun, Huang Haichao, Qiao Xiaojun, Duan Chuandong, Shi Wei, Mao Yang, Yu Mingjun, Ding Xijiu, Song Tianjia, Wu Hongli, Yin Manyi, Wang Xiujing, Wang Sanlong.

Test method for noise from electric earth-moving machinery

1 Scope

This document describes the method for measuring the external emitted noise and the driver position noise of electrically powered earth-moving machinery.

This document applies to the determination of noise levels of pure electric earthmoving machinery and hybrid earthmoving machinery as defined in GB/T 44254, fuel cell earthmoving machinery The measurement of noise of earth-moving machinery and externally powered earth-moving machinery shall be carried out for reference.

2 Normative references

GB/T 3767-2016

GB/T 3785.1-2023

GB/T 15173-2010

GB/T 25614-2010

GB/T 25615-2010

GB/T 44254

3 Terms and Definitions

The terms and definitions defined in GB/T 25614-2010, GB/T 25615-2010 and GB/T 44254 apply to this document.

4 Measuring instruments

4.1 Acoustic measurement instruments

4.1.1 The integrating sound level meter or other equivalent measurement system used for measurement shall preferably be a Class 1 sound level meter that meets the requirements of GB/T 3785.1-2023. Level meter.

4.1.2 Before and after measurement, the entire measurement system should be calibrated using a Class 1 accuracy sound calibrator that complies with GB/T 15173-2010. calibration.

4.2 Speed measuring instrument

The measurement accuracy of the speed measuring instrument should not be less than ±2%.

4.3 Meteorological parameter measuring instruments

The measurement accuracy of meteorological parameter measuring instruments should meet the following requirements.

— Thermometer. ±1°C;

— Anemometer. ±1m/s.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 44254Electric earth-moving machinery - Terminology

GB/T 3767-2016 · GB/T 3785.1-2023 · GB/T 15173-2010 · GB/T 25614-2010 · GB/T 25615-2010

Editions of GB/T 46048

Edition	Title	Revision	Status
GB/T 46048-2025	Electric earth-moving machinery - Methods of noise test	current edition	Current

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