GB 6830-1986: The tolerable limits of danger on telecommunication lines from power lines

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Scope

This standard applies to the hazardous impact of all types of AC power lines,
AC electric railway contact networks, other strong electric lines on the adjacent
telecommunication lines (including telecommunication lines and cables, cable
broadcast lines, cables and broadcast audio cables) under the following status
and conditions*:
1.1 Fault status of high-voltage lines
1.1.1 The three-phase symmetrical neutral point directly grounded power line
has one-phase short-circuit grounded.
1.1.2 The three-phase symmetrical neutral point indirectly grounded power line
has two-phase short-circuit grounded simultaneously at different locations.
1.1.3 The three-phase symmetrical neutral point indirectly grounded power line
has one-phase short-circuit grounded.
1.1.4 AC electric railway contact network conductor is short-circuit grounded.
1.1.5 Other asymmetric power line conductor is short-circuit grounded.
1.2 Normal operation status of high-voltage line
1.2.1 AC electric railway contact network line operate normally.
1.2.2 Other asymmetric power lines operate normally.
1.3 Grounding current impact caused by ground short-circuit fault current of the
high-voltage system
Since the power line and the AC electric railway contact network system
generate ground potential in the area where the short-circuit fault current flows
into and out of the earth, it causes ground current impact onto the adjacent
telecommunication system (the local grounding device, the underground cable).

Basic Data

Standard ID	GB 6830-1986 (GB6830-1986)
Description (Translated English)	The tolerable limits of danger on telecommunication lines from power lines
Sector / Industry	National Standard
Classification of Chinese Standard	M04
Classification of International Standard	33.040.50
Word Count Estimation	5,580
Date of Issue	9/2/1986
Date of Implementation	10/1/1987
Issuing agency(ies)	National Bureau of Standards
Summary	This standard applies to all types of AC power cord and AC electric railway catenary power lines and other strong, may have dangerous effects on neighboring telecommunication lines (including telecommunications open wire and cable, open wire and cables and cable radio broadcast sound transmission cable) case.