Publication details
| Publication CODE |
Title |
| NBN EN 61472:2013 (2013-07) |
LIVE WORKING - MINIMUM APPROACH DISTANCES FOR A.C. SYSTEMS in THE VOLTAGE RANGE 72,5 kV TO 800 kV - A METHOD OF CALCULATION |
| |
| Price Excl. VAT |
Total number of pages, tables and drawings |
|
25.00 €
|
2 P. |
Description
Describes a method for calculating the minimum approach distances for live working, at maximum voltages between 72,5 kV and 800 kV. This standard addresses system overvoltages and the working air distances or tool insulation between parts and/or workers at different electric potentials.
The required withstand voltage and minimum approach distances calculated by the method described in this standard are evaluated taking into consideration the following:
- workers are trained for, and skilled in, working in the live working zone;
- the anticipated overvoltages do not exceed the value selected for the determination of the required minimum approach distance;
- transient overvoltages are the determining overvoltages;
- tool insulation has no continuous film of moisture or measurable contamination present on the surface;
- no lightning is seen or heard within 10 km of the work site;
- allowance is made for the effect of conducting components of tools;
- the effect of altitude, insulators in the gap, etc, on the electric strength is taken into consideration.
For conditions other than the above, the evaluation of the minimum approach distances may require specific data, derived by other calculation or obtained from additional laboratory investigations on the actual situation.
|
| Class |
C18
(ELECTRICAL INSTALLATIONS OPERATION - PROTECTION AND PREVENTION MEASURES)
|
Available files
ATTENTION: Belgian registered standards (NBN EN or NBN HD) are generally
only available in English or French. Only the cover page is translated
and the document itself is in English or in French.
Very important notice: 98% of the text of the NBN EN 55XXX,
NBN EN 6XXXX comes from the IEC text which is NOT included.
This text can be ordered here:
IEC 61472:2013.
For the series NBN EN 50XXX, the standards are however complete.
|
EN version
|
FR version
|
DE version
|
|
Status
| Status |
Registered trilingual Belgian standard EN or FR or DE |
| Situation |
Currently active
Replaces
NBN EN 61472:2005
|
|
Origin
| Committee |
TC 78
LIVE WORKING
|
| Responsible |
Ir DELENS Marc
|
Approval
| BEC Approval |
2013-05-16 |
| NBN Approval |
2013-11-29 |
| Belgian Official Journal |
2013-12-16 |
| Registration |
137732 |
| ICS-Code (International Standards Classification) |
13.260
, 29
, 29.260.99
|
| NBN Status |
New |
|
| Date of ratification (d.o.r.) |
2013-05-16 |
| Date of availability (d.a.v.) |
2013-07-05 |
| Date of announcement (d.o.a.) |
2013-08-16 |
| Date of publication (d.o.p.) |
2014-02-16 |
| Date of withdrawal former edition (d.o.w.) |
2016-05-16 |
|
Correspondences with international standards
| Relation |
International standard |
Date |
| is identical to |
EN 61472:2013
|
2013-07-05 |
| is identical to |
IEC 61472:2013/ed. 3.0
|
2013-04-11 |
|
