DL/T 5033-2006 英文版 输电线路对电信线路危险和干扰影响防护设计规程

ICS 29.020   P 62
Record No. J523—2006
Electric Power Industry Standard of the People's Republic of China
P DL / T 5033 — 2006
To replace DL 5033 — 1994 and DL / T 5063 — 1996

The Design Rules of Telecommunication Lines against Danger and Interference Effects from Power Transmission Lines

Issue Date: May 6, 2006 Implementation Date: October 1, 2006
Issued by the National Development and Reform Commission of the People's Republic of China

1 Scope
These rules specify the limit of danger and interference effects on telecommunication lines arising from high voltage AC overhead power transmission lines (abbreviated as power transmission lines), give the calculation methods of such effects, and provide necessary parameters and protective measures.
These rules apply to the protection design of three-phase AC overhead power transmission lines with a rated voltage of 35 kV and above for telecommunication lines which comply with applicable standards.

2 Terms and Definitions
The following terms and definitions apply to these rules.
2.0.1 High trustworthy power transmission lines

Transmission line in system with directly grounded neutral point, featured by low failure rate and short duration of single-phase grounding short-circuit failure current (mostly shorter than 0.2s, never longer than 0.5s).
2.0.2 Neutral point not directly grounded system
A system in which the neutral point of transformer is not grounded or is grounded through an arc suppression coil or high impedance.
2.0.3 Neutral point directly grounded system
A system in which the neutral point of transformer is directly grounded or is grounded through low impedance.
2.0.4 Telecommunication lines
Communication lines, railway signal electrical line, cable television (signal, feed and subscriber) line, and remote controlling and signaling lines, in forms of overhead open wire, overhead or buried cable, and overhead or buried optical fiber cable.
2.0.5 Railway signal electrical lines
Cables and overhead open wires that transmit information forrailway signal system, such as relay semi-automatic or automatic obturate way circuit, remote controlling line, remote signaling line,and the track circuit within automatic obturates section.
2.0.6 Automatic obturate way circuit
Circuit used to determine the running directions of trains in cases where trains are running bidirectionally within automatic obturate section of the same railway.
2.0.7 Broadcasting user's lines
The matching transmission line between the output end of transformer and the corresponding input end of user's equipment used in the wired broadcasting power transmission system.
2.0.8 Voice-frequency transmission
Transmission of voice-frequency signals directly in metal conductors without analog modulation or digital coding.
2.0.9 Danger effects
Voltage and current induced in telecommunication lines by power transmission lines, excessive enough to endanger the safety of telecommunication operation and maintenance personnel, damage telecommunication lines or equipment, cause fire to buildings and structures, or cause inadvertent operation of railway signaling equipment bringing hazards to traffic safety.

投稿会员：芳华