GB/T 13870.1-2022
Effects of current on human beings and livestock—Part 1：General aspects

Standard No.

GB/T 13870.1-2022

Language

Chinese

Release Date

2022

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Lastest

GB/T 13870.1-2022

Replace

GB/T 13870.1-2008 GB/T 13870.3-2003

Scope

This document provides basic guidance on the effects of electrical currents on humans and domestic animals. For a given current path through the human body, the danger to the person depends mainly on the value of the current and the duration of the current. However, in many cases, the time/current regions specified in the following clauses are not actually directly used in the design of electric shock protection. The permissible limit value of the contact voltage (that is, the product of the current passing through the human body and the impedance of the human body) must be used as a criterion. Because the impedance of the human body changes with the contact voltage. Therefore, the relationship between current and voltage is not linear, so the relationship data needs to be given. The resistive and capacitive components presented by different parts of the human body such as skin, blood, muscles, other tissues and joints to the current constitute the body impedance. The value of body impedance depends on several factors, in particular the path of the current, the contact voltage, the duration, frequency, degree of skin moisture, contact surface area, applied pressure and temperature. The impedance values listed in this document are the result of careful review of data obtained primarily from cadavers and a few living humans. The effect of alternating current on the human body is basically based on the relevant research results on the effect of alternating current with a frequency of 50 Hz or 60 Hz, which is the most commonly used in electrical devices, but the data given are considered to be applicable for 15 Hz to 100 Hz The frequency range at which the frequency threshold at the beginning of this range is higher than the threshold of 50 Hz or 60 Hz is mainly due to the risk of ventricular fibrillation, which is the main mechanism of fatal accidents. Judging from the number of direct current applications, accidents with direct current are much less than expected, and fatal accidents occur only in very unfavorable situations, such as in mines; Ease of disengagement, and the ventricular fibrillation threshold for direct current is much higher than for alternating current when the shock duration is longer than the cardiac cycle. This basic safety publication is intended primarily for use by technical committees preparing standards in accordance with the principles specified in IEC Gui de 104 and ISO/IEC Gui de 51. It does not apply to manufacturers or notified bodies. Where applicable, it is the responsibility of the technical committees to use essential safety publications in the preparation of publications. Unless expressly mentioned or included in the relevant publication, the requirements, test methods or test conditions of the basic safety publication will not apply.

GB/T 13870.1-2022 history

• 2022 GB/T 13870.1-2022 Effects of current on human beings and livestock—Part 1：General aspects
• 2008 GB/T 13870.1-2008 Effects of current on human beings and livestock.Part 1:General aspects
• 2003 GB/T 13870.3-2003 Effects of current on human beings and livestock Part 3: Effects of currents passing through the body of livestock
• 1992 GB/T 13870.1-1992 Effects of current passing throuth the humman body.Part 2:Special aspects

GB/T 13870.1-2022 Effects of current on human beings and livestock—Part 1：General aspects has been changed from GB/T 13870.3-2003 Effects of current on human beings and livestock Part 3: Effects of currents passing through the body of livestock.

GB/T 13870.1-2022 -All Parts