CEI/IEC 60571:1998+A1:2006
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1 General1 General
1.1 Scope1.1 Scope
This International Standard applies to all electronic equipment for control, regulation, protection, supply, etc. installed on rail vehicles and associated with
一either the accumulator battery of the vehicle;
一or a low-voltage power supply source with or without a direct connection to the contact system (transformer, potentiometer device, auxiliary supply) with the exception of electronic power circuits, which conform to IEC 61287-1.
This standard covers the conditions of operation, design, construction, and testing of electronic equipment, as well as basic hardware and software requirements considered necessary for competent, reliable equipment.
Additional requirements in other standards or individual specifications may complement this standard, if they are justified.
Specific requirements related to practices necessary to assure defined levels of functional safety are to be determined in accordance with 4.6.3.1 and 4.6.3.2 of IEC 62278 and its informative Annex A.
Software safety integrity level of 1 or higher shall only be considered when it is shown that a residual safety risk remains and that it has to be carried by the software driven programmable electronic system. In such a case (i.e. software safety integrity level 1 or higher), IEC 62279 is applicable.
For the purposes of this standard, electronic equipment is defined as equipment mainly composed of semiconductor devices and recognized associated components. These components will mainly be mounted on printed boards.
NOTE Sensors (current, voltage, speed, etc.) and firing unit printed board assemblies for power electronic devices are covered by this standard. Complete firing units are covered by IEC 61287-1.
1.2 Normative references1.2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
IEC 60068-2-1:1990, Environmental testing-Part 2: Tests-Tests A: Cold
IEC 60068-2-2:1974, Environmental testing一Part 2: Tests一Tests B: Dry heat
IEC 60068-2-30:1980, Environmental testing一Part 2: Tests-Test Db and guidance: Damp heat, cyclic (12+12-hour cycle)
IEC 60077-1，Rules for electric traction equipment
IEC 60297 (all parts), Mechanical structures for electronic equipment一Dimensions of mechanical structures of the 482,6 mm (19 in) series
IEC 60321，Guidance for the design and use of components intended for mounting on boards with printed wiring and printed circuits
IEC 60352-1，Solderless connections一Part 1: Solderless wrapped connections一General requirements, test methods and practical guidance
IEC 60352-2, Solderless connections一Part 2: Solderless crimped connections一General requirements, test methods and practical guidance
IEC 60529, Degrees of protection provided by enclosures (1P Code)
IEC 60605 (all parts), Equipment reliability testing
IEC 60617一DB: 20011, Graphical symbols for diagrams
IEC 60850, Supply voltages of traction systems
IEC 61000-4-4:1995, Electromagnetic Compatibility (EMC)一Part 4 IEC 61000-4-4:1995, Electromagnetic Compatibility (EMC)-Part 4 Testing and measurement techniques一Section 4: Electrical fast transientlburst immunity test一Basic EMC publication
IEC 61000-4-5, Electromagnetic Compatibility (EMC)一Part 4 IEC 61000-4-5, Electromagnetic Compatibility (EMC)-Part 4 Testing and measurement techniques一Section 5: Surge immunity test
IEC 61082 (all parts), Preparation of documents used in electrotechnology
IEC 61188-5 (all parts), Printed boards and printed board assemblies一Design and use一Attachment (landloint) considerations
I EC 61249, Materials for printed boards and other interconnecting structures
IEC 61287-1，Power convertors installed on board rolling stock一Part 1: Characteristics and test methods
IEC 61373, Electrical railway equipment一Rolling stock一Shock and vibration requirements
IEC 62236-3-2:2003, Railway applications一Electromagnetic compatibility一Part 3-2: Rolling stock一Apparatus
IEC 62278:2002, Railway applications一Specification and demonstration of reliability, availability, maintainability and safety (RAMS)
IEC 62279, Railway applications一Communications, signalling and processing systems一 Software for railway control and protection systems
ISO 9000-3, Quality management and quality assurance standards一Part 3: Guidelines for the application of ISO 9001 to the development, supply and maintenance of software
ISO 9001，Quality systems一Model for quality assurance in design, development, production, installation and servicing
ISO 9002, Quality systems一Model for quality assurance in production, installation and servicing
1 “DB” refers to the IEC on-line database.
1.3 Definitions
For the purpose of this International Standard, the following definitions apply:
1.3.1
printed board
base material cut to size containing all holes and bearing at least one conductive pattern. Printed boards are typically subdivided according to
一their structure (e.g. single and double-sided, multilayers);
一the nature of the base material (e.g. rigid, flexible).
1.3.2
printed board assembly
printed board with electrical and mechanical components and/or other printed boards attached to it with all manufacturing processes, soldering, coating, etc. completed
1.3.3
plug一in unit
unit which plugs into a subrack and is supported by guides. These units can be of various types, ranging from a printed board with components mounted in a frame to a box type unit
1.3.4
subrack
structural unit for housing printed board assemblies and/or plug-in units
1.3.5
rack
free-standing or fixed structure for supporting electrical or electronic equipment (e.g. subracks)
1.3.6
cubicle
any enclosure for housing electrical and/or electronic equipment
1.3.7
line replaceable unit (LRU)
unit designed to be exchanged as a result of on-vehicle fault diagnosis, e.g. a subrack, or plug-in unit
1.3.8
performance check
short-form performance test which is carried out during and after environmental tests, sufficient to prove that the equipment is within its operational limits, and that it has survived an environmental test
1.3.9
control system voltage supply
voltage supply used to power the vehicle control equipment
The supply may be derived from a vehicle battery. The battery may be charged from battery chargers, auxiliary inverters and motor-alternator or motor-generator sets with associated electronic regulations.
Where the control system voltage supply is derived from a battery, the nominal and rated control system voltages are defined in 3.1.Where no battery is fitted, the nominal control system voltage is the normal controlled level of that voltage.
1.3.10
vehicleing
all wiring which can be connected to the control system voltage supply, wherever located, and all other wiring external to the electronic equipment under consideration
1.3.11
supply overvoltage
electrical disturbance to the control system voltage supply caused by equipment controlling that supply. A surge will occur as an increase in the level of the control system voltage supply
1.3.12
surge
non-periodic and relatively short positive or negative (or both) variable (voltage or current) between two steady states
It may be produced by the normal operation of equipment within the vehicle, caused generally by the discharge of energy when inductive circuits are switched.
It may be present either on the control system voltage supply, or on wiring connected directly to switched inductive circuits, or coupled electrostatically or electromagnetically from such wiring into other wiring.
The effective value of the source impedance of a transient will depend upon the manner of its generation and coupling.
1.3.13
burst
repetitive pulses occurring during a fixed time interval
They may occur during normal operation of the vehicle, typically resulting from unstable arc conditions.
1.3.14
failure failure
inability of an item of equipment to continue to perform its intended function
A temporary malfunction is not considered a failure provided that
a) the equipment recovers normal operation automatically following malfunction;
b) the malfunction is not apparent to the vehicle-operating staff; for example, fault indicators do not light up.
NOTE Attention is drawn to the possibility of a consequential failure of one item of equipment resulting from a temporary malfunction of another item of equipment connected to it.
1.3.15
damage
any change in visual appearance or alteration of mechanical integrity
1.3.16
useful life
period from a stated time, during which, under stated conditions, an item has an acceptable failure rate, or until an unrepairable failure occurs
NOTE For a repairable item the individual useful life may be ended by a failure which is not considered as repairable for any reason. 原件下载： 
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