GB/T 19185-2008 English PDF

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GB/T 19185-2008: Calculation method of live working minimum approach distance on a.c. transmission line
Status: Valid

GB/T 19185: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 19185-2008	229	Add to Cart	3 days	Calculation method of live working minimum approach distance on a.c. transmission line	Valid
GB/T 19185-2003	319	Add to Cart	3 days	AC live line safety distance calculation method	Obsolete

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Basic data

Standard ID: GB/T 19185-2008 (GB/T19185-2008)
Description (Translated English): Calculation method of live working minimum approach distance on a.c. transmission line
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: K47
Classification of International Standard: 29.240.20
Word Count Estimation: 10,173
Date of Issue: 2008-09-24
Date of Implementation: 2009-08-01
Older Standard (superseded by this standard): GB/T 19185-2003
Regulation (derived from): Announcement of Newly Approved National Standards No. 16 of 2008 (No. 129 overall)
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 the exchange of live line work safety clearance distance and combined method of calculating risk assessment criteria, the gap coefficient, altitude correction coefficient. The calculated results and experimental studies for design reference. This standard applies to 110kV ~ 750kV AC line safe distance and composition of live working gap is calculated and checked. Live working in substation equipment a safe distance and composition of the gap calculation check, or you can refer to adopt.

GB/T 19185-2008: Calculation method of live working minimum approach distance on a.c. transmission line

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calculation method of live working minimum approach distance on actransmission line ICS 29.240.20 K47 National Standards of People's Republic of China Replacing GB/T 19185-2003 AC Live Line Work Safety Distance Calculation Posted 2008-09-24 2009-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 lines operating over-voltage 2 5 3 Calculation Method 6 calculated coefficients and values \u200b\u200b3 7 hazard rate calculation 4 Environmental impact of 8 5 9 Calculation Example 5

Foreword

This standard replaces GB/T 19185-2003 "AC Live Line Work Safety Distance Calculation Method." The main difference compared with the standard GB/T 19185-2003 as follows. --- On the "Terms and Definitions" chapter "occupying an intermediate potential conductor length", "a combination of a minimum clearance", "statistical safety factor", "middle Conductor potential influence coefficients "and other terms were added; --- In the "Calculation Method" chapter complements the "minimum clearance combination" is calculated; --- In the "coefficient calculation and values" chapter complements the "occupying intermediate potential conductor length", "middle conductor potential impact factor" of Value method; --- On the "Calculation examples" chapter "Table 3 security clearance from the combination calculated value" added "a combination of minimum clearance" list. The standard proposed by China Electricity Council. This standard by the National Standardization Technical Committee work and live under the jurisdiction responsible for the interpretation. This standard was drafted. State Grid Wuhan High Voltage Research Institute, Henan Province Pingdingshan Electric Power Bureau. The main drafters of this standard. Hu Yi, Zhao Jiang, Wu Weining, Yi Hui, Zhang Lihua, Hujian Xun, Shu, the peak. This standard replaces the standards previously issued as follows. --- GB/T 19185-2003. AC Live Line Work Safety Distance Calculation

1 Scope

This standard specifies the calculation method of the exchange of live line work and combination safe distance gap, risk assessment criterion, the gap coefficient, sea Stubbs correction coefficient. The result of the calculation for the design and testing research reference. This standard applies to 110kV ~ 750kV AC live line work safe distance and gap combination calculating and checking. In the substation located Combination safe distance and prepare for live working gap calculation check, but also can refer to use.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB/T 18037 live working tools Technical requirements and design guide Overvoltage protection and insulation coordination DL/T 620 AC electrical installations

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 RMS maximum operating voltage under normal operating conditions, the system appears (phase - phase). 3.2 2% probability of occurrence of overvoltage. 3.3 Insulation presents a 50% probability of flashover impulse voltage peaks. 3.4 Insulating render 90% probability withstand impulse voltage peaks. 3.5 To ensure that the job presents minimal clearance gap 90% probability impulse withstand distance. 3.6 The projected length of the body is part of the job gap on the gap axis. 3.7 Clearance operation minimum allowed value of the distance from the minimum safe distance from electrical body composition range of activities. ......

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