IEC 60322 pdf download – Railway applications — Electric equipment for rolling stock — Rules for power resistors of open construction

IEC 60322 pdf download – Railway applications — Electric equipment for rolling stock — Rules for power resistors of open construction
1scope and object
This International Standard gives the rules for all power resistors (for example,braking.heating,snubber and filter) used in the power and auxiliary circuits on board rolling stockirrespective of the circuit and the type of vehicle where they are used.
These resistors are generally of open construction and are used in polluted areas. Theconstruction consists of resistor elements of grids, plates,strips, ribbons or wires.
NOTE Certain of these rules may, after agreement between user and manufacturer，be used for electricalequipment installed on other vehicles such as mine locomotives, trolley buses, etc.
This standard states
– the characteristics of the resistors;
the service conditions with which the power resistors have to comply;
the tests intended for confirming that these conditions have been met and the methods tobe adopted for these tests;
the information to be marked on, or given with, the resistors.
This standard does not give requirements relating to general service conditions and generalrules which are given in lEC 6o077-1.
The object of this standard is to adapt the general rules given in IEC 60077-1 to powerresistors for rolling stock in order to obtain uniformity of requirements and tests throughout thecorresponding range of components and to avoid the need for testing to two differentstandards.
2Normative references
The following normative documents contain provisions which，through reference in this text,constitute provisions of this International ‘Standard. For dated references,subsequentamendments to,or revisions of，any of these publications do not apply. However,parties toagreements based on this International Standard are encouraged to investigate the possibilityof applying the most recent editions of the normative documents indicated below. For undatedreferences， the latest edition of the normative document referred to applies. Members of lECand lS0 maintain registers of currently valid International Standards.
IEC 60050(811):1991, International Electrotechnical Vocabulary (IEV) – Chapter 811:Electrictraction
IEC 60077-1:1999,Railway applications – Electric equipment for rolling stock – Part 1: Generalservice conditions and general rules
IEC 60364-4-41:1992，Electrical installations of buildings – Part 4: Protection for safety -Chapter 41: Protection against electric shock
IEC 60943:1998，Guidance concerning the permissible temperature rise for parts of electricalequipment, in particular for terminals
IEC61133:1992,Electric traction – Rolling stock – Test methods for electric andthermallelectric rolling stock on completion of construction and before entry into service
IEC 61373:1999，Railway applications – Roling stock equipment – Shock and vibration tests
3Definitions
For the purpose of this International Standard,the definitions of lEC 60050(811) and thefollowing definitions apply.
3.1
resistor element
resistive conductor forming part of a resistor case or frame, usually in the form of grids, plates,strips, ribbons or wires and which may have intermediate tappings
[IEV811-27-11]
NOTE A resistor element is usually a removable assembly.
3.2
resistor
general term used in this standard to designate any of the following forms of electricalresistance
3.2.1
resistor caseresistor frame
set of resistor elements assembled into a single structure[IEV 811-27-12]
NOTE1 Resistor case is used for resistors having one or more resistor elements installed in an enclosureintended to form part of a forced air cooling duct.
NOTE 2 Resistor frame is used for resistors having one or more resistor elements installed on a common framefor natural cooling in open air.
3.2.2
resistor section
resistive circuit contained between two terminals,dedicated to an electrical function andconnected to external equipment
[IEV811-27-14 modified.]
NOTE A resistor section may consist of a part or more than one resistor case or frame.