Electrical Control Assemblies
1 Scope
This standard specifies the terms and definitions, service conditions and basic requirements for design, manufacture and testing of electrical control assemblies.
This standard is applicable to electrical control assemblies with rated AC voltage not exceeding 1 000 V or rated DC voltage not exceeding 1 500 V (hereinafter referred to as electronic control assemblies or assemblies).
This standard is applicable to electronic control assemblies equipped with or without electronic devices.
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.
GB/T 156-2007 Standard Voltage
GB/T 762-2002 Standard Current Ratings
GB/T 2423.4-2008 Environmental Testing for Electric and Electronic Products — Part 2: Test Method — Test Db: Damp Heat, Cyclic (12h + 12h Cycle)
GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products — Part 2: Test Method — Test Fc: Vibration (Sinusoidal)
GB/T 3047.1-1995 Series of Basic Dimensions of Panels, Rack and Cabinets for Vertical Increment of 20 mm
GB/T 3859.1-2013 Semiconductor Converters — General Requirements and Line Commutated Converters — Part 1-1: Specification of Basic Requirements
GB/T 4025-2010 Basic and Safety Principles for Man-Machine Interface, Marking and Identification — Coding Principles for Indicators and Actuators
GB/T 4026-2010 Basic and Safety Principles for Man-Machine Interface, Marking and Identification — Identification of Equipment Terminals and Conductor Terminations
GB/T 4205-2010 Basic and Safety Principles for Man-Machine Interface (MMI), Marking and Identification — Actuating Principles
GB 4208-2008 Degrees of Protection Provided by Enclosure (IP Code)
GB/T 4588.1-1996 Sectional Specification: Single and Double Sided Printed Boards with Plain Holes
GB/T 4588.2-1996 Sectional Specification: Single and Double Sided Printed Boards with Plated-through Holes
GB 7251.1-2013 Low-voltage Switchgear and Controlgear Assemblies — Part 1: General Rules
GB/T 11021 Electrical Insulation — Thermal Evaluation and Designation
GB/T 13384-2008 General Specifications for Packing of Mechanical and Electrical Product
GB/T 20138-2006 Degrees of Protection Provided by Enclosures for Electrical Equipment Against External Mechanical Impacts (IK Code)
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB 7251.1-2013 and the following apply.
3.1
electrical control assemblies
general name of the switchgear used to control the receiving equipment and the combination of control, measurement, protection and regulation equipment associated with it. Also refers to the combination of these electrical appliances and the associated internal wiring, accessories, housing, and support components
3.2
control unit
general assembly of electrical control assemblies, consisting of all electrical and mechanical components that perform control functions
3.3
electromagnetic compatibility (EMC)
capability of an equipment or system to function satisfactorily in its electromagnetic environment without introducing intolerable electromagnetic disturbance to anything in that environment
[GB/T 4365-2003, Definition 161-01-07]
3.4
electrical control ASSEMBLY manufacturer
organization that responsible for the overall electrical control assemblies
Foreword III
1 Scope
2 Normative References
3 Terms and Definitions
4 Marking, Packaging and Transportation
4.1 Marking
4.2 Packaging
5 Service Conditions
5.1 Normal service conditions
5.2 Special service conditions
5.3 Conditions during transport, storage and installation
6 Technical Requirements
6.1 Performance indexes
6.2 Strength of materials and parts
6.3 Degree of protection provided by enclosure
6.4 Clearances and creepage distances
6.5 Protection
6.6 Selection and installation of switching devices and components
6.7 Internal electrical circuits and connections
6.8 Cooling
6.9 Terminals for external conductors
6.10 Dielectric properties
6.11 Temperature rise limits
6.12 Short-circuit protection
6.13 Electromagnetic compatibility (EMC)
7 Verification
7.1 General
7.2 General inspection
7.3 Strength of materials and parts
7.4 Degree of protection provided by enclosure
7.5 Clearance and creepage distance
7.6 Protection against electric shock and integrity of protective circuits
7.7 Selection and installation of switching devices and components
7.8 Internal electrical circuits and connections
7.9 Terminals for external conductors
7.10 Power-on operation
7.11 Continuous operation
7.12 Electrical properties
7.13 Dielectric properties
7.14 Temperature rise
7.15 Electromagnetic compatibility
7.16 Noise
7.17 Drop test
7.18 Climatic environmental test
