GB/T 13870.1-2008: Effects of current on human beings and livestock -- Part 1: General aspects

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Scope

As far as a given current path through the human body is concerned, the danger to the person mainly depends on the value of the current and the energization time. But when
In many cases, the time/current zones specified in the following clauses are not actually used directly in the design of electric shock protection. Must be a letter of time
The allowable limit value of the number of contact voltages (that is, the product of the current through the human body and the human body impedance) is used as a criterion. Because the impedance of the human body varies with contact
Voltage. Therefore, the relationship between current and voltage is not linear, so the relationship data needs to be given. Different parts of the human body such as the skin,
The resistive and capacitive components of blood, muscles, other tissues, and joints that respond to current constitute the body's impedance.
The value of the body impedance depends on several factors, especially the current path, the contact voltage, the duration of the current, the frequency, and the skin moisture course
Degree, contact surface area, pressure and temperature applied.
The impedance values listed in this standard are mainly obtained from careful examination of data obtained from corpses and a few living people.
The effect of AC current on the human body is basically the AC current effect at the frequency of 50Hz or 60Hz most commonly used in electrical devices.
Relevant research results are based, but the data given are considered to be applicable to the frequency range of 15Hz to 100Hz, at the beginning of this range
The frequency threshold is higher than the threshold of 50 Hz or 60 Hz. Mainly, this chapter first considers the risk of ventricular fibrillation because it is the cause
The main mechanism for fatal accidents.
In terms of the number of DC applications, DC accidents are much less than expected, only in very unfavorable situations, such as in
Fatal accidents can only occur in mines; part of the reason is that the charged DC charged body is easier to get rid of, and when the duration of the shock is longer than the heart
During the cycle, the ventricular fibrillation threshold of DC current is much higher than that of AC.
Note. GB/T 13870 includes information on human impedance and human current thresholds for various physiological effects. This information can be combined for reference
Of human body current pathways, wet conditions of contact, and AC and DC contact voltage thresholds of skin contact areas.
The data of the physical effects are included in the GB/T 3805 standard.

Basic Data

Standard ID	GB/T 13870.1-2008 (GB/T13870.1-2008)
Description (Translated English)	Effects of current on human beings and livestock -- Part 1: General aspects
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Q77
Classification of International Standard	91.140.50
Word Count Estimation	42,462
Date of Issue	2008-06-19
Date of Implementation	2009-04-01
Older Standard (superseded by this standard)	GB/T 13870.1-1992
Quoted Standard	GB/T 3805-1993; IEC Guide 104-1997
Adopted Standard	IECTS 60479-1-2005, IDT
Regulation (derived from)	Announcement of Newly Approved National Standards No. 10 of 2008 (total 123)
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary	This standard specifies: through the human body a given current path, the risk depends on the person's current value and the power-on time. However, in many cases, the following terms of the time/current region is actually not used directly for shock protection design. Must contact voltage as a function of time (i. e., the current through the human body impedance of the product) of the permissible limit as the criterion. Since the impedance of the human body with the contact voltage. Therefore current and voltage relationship is not linear, therefore need to give the relational data. Different parts of the body such as skin, blood, muscle, other tissues and joints on the current rendered resistive and capacitive components of the body composition impedance.