IEEE 957 : 2005
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
GUIDE FOR CLEANING INSULATORS
Hardcopy, PDF
07-08-2023
20-09-2005
Important note : Users cannot be edited or removed once added to your Multi user PDF.
1 Overview
1.1 Scope
2 Normative references
3 Definitions, acronyms, and abbreviations
3.1 Definitions
3.2 Acronyms and abbreviations
4 Insulators to be cleaned
4.1 Introduction
4.2 Transmission line insulators
4.3 Station equipment
4.4 Distribution line equipment
4.5 Large diameter equipment
4.6 Greased insulator cleaning
4.7 Resistive glazed insulator cleaning
4.8 Room temperature vulcanizing coated ceramic insulator cleaning
5 Types of contaminants
5.1 Salt
5.2 Cement/lime
5.3 Dusts
5.4 Bird excrement
5.5 Chemical
5.6 Smog (vehicular emission)
5.7 Cooling tower effluent
5.8 Smoke
5.9 Organic
5.10 Ice/snow
5.11 Frequency of cleaning
6 Methods
6.1 Energized
6.2 De-energized
6.3 Results
7 Cleaning equipment
7.1 High-pressure water equipment (2750 kPa to 7000 kPa)
(400 psi to 1000 psi)
7.2 Medium-pressure water equipment (2100 kPa to 2750 kPa)
(300 psi to 400 psi)
7.3 Low-pressure water equipment (1400 kPa) (200 psi)
7.4 Compressed air, dry-type cleaner
7.5 Fixed spray
8 Technical considerations for energized cleaning with water
8.1 Leakage current
8.2 Working distance
8.3 Water quality
8.4 Water supply
8.5 Water pressure
8.6 Nozzles
8.7 Grounding
8.8 Laboratory tests in grounded environments
8.9 Fixed nozzle
8.10 Helicopter-mounted nozzle
9 Industry practices
9.1 General industry practices
9.2 Individual company standards/rules
9.3 Public/public relations
9.4 Limitations
10 Summary
10.1 Grounding
Annex A (informative) Bibliography
Annex B (informative) Maintenance of ceramic insulators after
cleaning
Annex C (informative) English units
Lists the procedures used for cleaning contaminated electrical insulators (excluding nuclear, toxic, and hazardous chemical contaminants), of all types, using varied equipment and techniques.
| DocumentType |
Guide
|
| ISBN |
978-0-7381-4690-4
|
| Pages |
77
|
| PublisherName |
Institute of Electrical & Electronics Engineers
|
| Status |
Withdrawn
|
| Supersedes |
| UFC 3-550-07 : 2017 | UNIFIED FACILITIES CRITERIA - OPERATION AND MAINTENANCE (O&M;): EXTERIOR POWER DISTRIBUTION SYSTEMS |
| IEEE C57.19.100-2012 REDLINE | IEEE Guide for Application of Power Apparatus Bushings |
| IEEE 242-2001 | IEEE Recommended Practice for Protection and Coordination of Industrial and Commercial Power Systems (IEEE Buff Book) |
| IEEE 1651 : 2010 | REDUCING BIRD-RELATED OUTAGES |
| IEEE 1523-2002 | IEEE Guide for the Application, Maintenance, and Evaluation of Room Temperature Vulcanizing (RTV) Silicone Rubber Coatings for Outdoor Ceramic Insulators |
| IEEE 1048-2003 | IEEE Guide for Protective Grounding of Power Lines |
| IEEE 4-2013 | IEEE Standard for High-Voltage Testing Techniques |
| IEEE 80-2013 REDLINE | IEEE Guide for Safety in AC Substation Grounding |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.