GB/T 14048.11-2024 English PDF (GBT14048.11-2024)

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GB/T 14048.11-2024: Low-voltage switchgear and controlgear - Part 6-1: Multiple function equipment - Transfer switching equipment
GB/T 14048.11-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.120.40; 29.130.20
CCS K 30
Replacing GB/T 14048.11-2016
Low-voltage switchgear and controlgear - Part 6-1: Multiple
function equipment - Transfer switching equipment
(IEC 60947-6-1:2021, MOD)
ISSUED ON: APRIL 25, 2024
IMPLEMENTED ON: NOVEMBER 01, 2024
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 4
Introduction ... 8
1 Scope ... 11
2 Normative references ... 12
3 Terms, definitions, symbols and abbreviated terms ... 13
3.1 Transfer switching devices ... 14
3.2 Operation of TSE ... 16
3.3 Main contact positions ... 19
3.4 Symbols and abbreviated terms ... 19
4 Classification ... 20
5 Characteristics ... 21
5.1 Summary of characteristics ... 21
5.2 Type and characteristics of equipment ... 21
5.3 Rated and limiting values for the main circuit ... 23
5.4 Utilization category ... 25
5.5 Control circuits ... 25
5.6 Auxiliary circuits ... 26
6 Product information ... 26
6.1 Nature of information ... 26
6.2 Marking ... 26
6.3 Instructions for installation, operation and maintenance, decommissioning and
dismantling... 29
6.4 Environmental information ... 30
7 Normal service, mounting and transport conditions ... 30
8 Constructional and performance requirements ... 30
8.1 Constructional requirements ... 30
8.2 Performance requirements ... 33
8.3 Electromagnetic compatibility (EMC) ... 39
9 Tests ... 41
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020,
Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents.
This document is Part 6-1 of GB/T 14048, Low-voltage switchgear and controlgear.
The following parts have been issued under GB/T 14048:
-- Part 1: General rules;
-- Part 2: Circuit-breakers;
-- Part 3: Switches, disconnectors, switch-disconnectors and fuse-combination
units;
-- Part 4-1: Contactors and motor-starters - Electromechanical contactors and
motor-starters (Including motor protector);
-- Part 4-2: Contactors and motor starters - Semiconductor controllers and
starters for AC motors (including soft starters);
-- Part 4-3: Contactors and motor-starters - AC semiconductor controllers and
contactors for non-motor loads;
-- Part 5-1: Control circuit devices and switching element - Electromechanical
control circuit devices;
-- Part 5-2: Control circuit appliances and switching elements - Proximity
switches;
-- Part 5-3: Control circuit devices and switching elements - Requirements for
proximity devices with defined behaviour under fault conditions (PDDB);
-- Part 5-4: Control circuit devices and switching elements - Method of assessing
the performance of low-energy contacts - Special test;
-- Part 5-5: Control circuit devices and switching elements - Electrical
emergency stop device with mechanical latching function;
-- Part 5-6: Control circuit devices and switching elements - DC interface for
proximity sensors and switching amplifiers (NAMUR);
-- Part 5-7: Control circuit devices and switching elements - Requirements for
proximity devices with analogue output;
-- Part 5-8: Control circuit devices and switching elements - Three-position
enabling switches;
-- Part 5-9: Control circuit devices and switching elements - Flow rate switches;
-- Part 6-1: Multiple function equipment - Transfer switching equipment;
-- Part 6-2: Multiple function equipment control and protective switching
devices (or equipment) (CPS);
-- Part 7-1: Ancillary equipment - Terminal blocks for copper conductors;
-- Part 7-2: Ancillary equipment - Protective conductor terminal blocks for
copper conductors;
-- Part 7-3: Ancillary equipment - Safety requirements for fuse terminal blocks;
-- Part 7-4: Ancillary equipment - PCB terminal blocks for copper conductors;
-- Part 7-5: Ancillary equipment - Terminal blocks for aluminium conductors;
-- Part 8: Loaded thermal protection (PTC) control units for rotating electrical
machines;
-- Part 9-1: Active arc-fault mitigation systems - Arc quenching devices;
This document replaces GB/T 14048.11-2016, Low-voltage switchgear and controlgear
- Part 6-1: Multiple function equipment - Transfer switching equipment. Compared with
GB/T 14048.11-2016, except for structural adjustment and editorial changes, the main
technical changes are as follows:
-- Add the provisions for the scope to which this document does not apply (see
Clause 1; Clause 1 of the 2016 edition);
-- Update terms and definitions (see Clause 3; Clause 3 of the 2016 edition);
-- Add multi-source transfer switching equipment (see Clause 4, Annex D);
-- Add bus-tie transfer switching equipment (see Clause 4, Annex E);
-- Add bypass transfer switching equipment (see Clause 4, Annex F);
-- Change the definition of utilization category (see 5.4; 5.4 of the 2016 edition);
-- Change the marking requirements (see 6.2; 6.2 of the 2016 edition);
-- Add requirements for clearances and creepage distances (see 8.1.6);
-- Add requirements and tests for mechanical and electrical interlock (see 8.2.1.2,
9.2.3.2);
-- Add requirements for operating sequences (see 6.3);
Low-voltage switchgear and controlgear - Part 6-1: Multiple
function equipment - Transfer switching equipment
1 Scope
This document applies to transfer switching equipment (TSE), to be used in power
systems for ensuring the continuity of the supply and allowing the energy management
of the installation, by transferring a load between power supply sources, the rated
voltage of which does not exceed 1 000 V AC or 1 500 V DC.
It covers:
-- manually operated transfer switching equipment (MTSE);
-- remotely operated transfer switching equipment (RTSE);
-- automatic transfer switching equipment (ATSE).
It does not cover:
a) TSE configurations that are either not manufacturer tested and/or not marked
according to this document as a complete transfer switch;
b) auxiliary contacts (for guidance, see GB/T 14048.5);
c) transfer switches used in explosive atmospheres [for guidance, see IEC 60079
(all parts)];
d) embedded software design (for guidance, see IEC TR 63201);
e) cybersecurity aspects (for guidance, see IEC TS 63208);
f) TSE rated for direct-on-line starting asynchronous motor of design NE and HE,
according to GB/T 21210-2016 (for guidance, see AC-3e utilisation category
according GB/T 14048.4-2020);
g) Other types of TSE, including closed-circuit transfer TSE, neutral overlapping
transfer TSE, TSE with load shedding function, etc. The supplementary
requirements for these types of TSE are under consideration.
The control electrical appliances (such as control switches, etc.) and protective
electrical appliances (such as circuit breakers, etc.) required by TSE shall comply with
the requirements of relevant national standards.