BS IEC IEEE 65700-19-03-2014 pdf download.Bushings for DC application.
This International Standard applies to outdoor and indoor bushings of any voltage used on DC systems, of capacitance graded or gas insulated types for use as components of oil-filled converter transformers and smoothing reactors, as well as air-to-air DC bushings. This standard does not apply to the following:
• cable terminations (potheads);
• bushings for instrument transformers;
• bushings for test power supplies;
• bushings applied with gaseous insulation (other than air at atmospheric pressure) external to the bushing;
• bushings for industrial application;
• bushings for traction application;
• bushings for distribution class transformers.
This standard makes reference to IEC 601 37 for general terms and conditions and defines the special terms used, operating conditions, ratings, test procedures as well as general mechanical and electrical requirements for bushings for DC application.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60050, International Electrotechnical Vocabulary (IEV). Available from:
http://www.electropedia.org/
IEC 60060-1 :201 0, High-voltage test techniques – Part 1: General definitions and test requirements
IEC 60071 -1 , Insulation co-ordination – Part 1: Definitions, principles and rules
IEC 60071 -5, Insulation co-ordination – Part 5: Procedures for high-voltage direct curren (HVDC) converter stations
IEC 60076-1 , Power Transformers – Part 1: General
IEC 60076-2, Power Transformers – Part 2: Temperature rise for liquid-immersed transformers
IEC 60076-7, Power Transformers – Part 7: Loading guide for oil-immersed power transformers
IEC 601 37:2008, Insulated bushings for alternating voltages above 1000 V
IEC 60270, High-voltage test techniques – Partial discharge measurements
IEC 60296, Fluids for electrotechnical applications – Unused mineral insulating oils for transformers and switchgear
IEC 60376, Specification of technical grade sulfur hexafluoride (SF6) for use in electrical equipment
IEC 60480, Guidelines for the checking and treatment of sulfur hexafluoride (SF6) taken from electrical equipment and specification for its re-use
IEC 60836, Specifications for unused silicone insulating liquids for electrotechnical purposes
IEC 60867, Insulating liquids – Specifications for unused liquids based on synthetic aromatic hydrocarbons
IEC 61 245, Artificial pollution tests on high-voltage insulators to be used on d.c. systems
IEC 61 378-2, Converter transformers – Part 2: Transformers for HVDC Applications
IEC 61 462, Composite hollow insulators – Pressurized and unpressurized insulators for use in electrical equipment with rated voltage greater than 1 000 V – Definitions, test methods, acceptance criteria and design recommendations
IEC 621 55, Hollow pressurized and unpressurized ceramic and glass insulators for use in electrical equipment with rated voltages greater than 1 000 V
CISPR 1 6-1 (all parts), Specification for radio disturbance and immunity measuring apparatus and methods
CISPR 1 8-2, Radio interference characteristics of overhead power lines and high-voltage equipment – Parts 2: Methods of measurement and procedure for determining limits
IEEE Std C57.1 9.00™-2004, IEEE General Requirements and Test Procedures for Outdoor Apparatus Bushings (ANSI) IEEE Standards Dictionary Online 2
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 601 37, IEEE Std C57.1 9.00, IEC 60050-471 and the IEEE Standards Dictionary Online, as well as the following, apply.
3.1.1 DC bushing
bushing subject to DC voltage stress, i.e. bushings applied to the valve winding side of a converter transformer, bushings applied to a DC smoothing reactor, wall bushing or a bushing applied to a converter valve.BS IEC IEEE 65700 pdf download.