GB/T 8286-2017 English PDF (GBT8286-2017)

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GB/T 8286-2017: Mining flameproof movable substations
GB/T 8286-2017
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 29.180
K 41
Replacing GB/T 8286-2005
Mining Flameproof Movable Substations
ISSUED ON: DECEMBER 29, 2017
IMPLEMENTED ON: JULY 01, 2018
Issued by: General Administration of Quality Supervision, Inspection
and Quarantine;
Standardization Administration of PRC.
Table of Contents
Foreword ... 4
1 Scope ... 6
2 Normative References ... 6
3 Terms and Definitions ... 7
4 Technical Requirements ... 8
4.1 Use conditions ... 8
4.2 Rated value ... 9
4.3 Insulation performance ... 10
4.4 Moisture resistance ... 10
4.5 Flange ... 10
4.6 Flameproof enclosure ... 11
5 Inspection Rules, Test Items and Methods ... 12
5.1 Inspection rules ... 12
5.2 Test items and methods ... 12
6 Marking, Packaging, Transportation and Storage ... 13
6.1 Marking ... 13
6.2 Packaging ... 14
6.3 Transportation ... 15
6.4 Storage ... 15
7 Mining Flameproof Dry-Type Transformer ... 15
7.1 Technical requirements ... 15
7.2 Inspection rules, test items and methods ... 19
7.3 Marking ... 20
8 High Voltage Load Switch for Mining flameproof Movable Substation ... 20
8.1 Technical requirements ... 20
8.2 Inspection rules, test items and methods ... 23
8.3 Mark ... 24
9 High-Voltage Vacuum Switch for Mining Flameproof Movable Substation .. 24
9.1 Technical requirements ... 24
9.2 Inspection rules, test items and methods ... 29
9.3 Marks ... 30
10 Cable Connector for Mining flameproof Movable Substation ... 31
11 Low-Voltage Feed Switch for Mining flameproof Movable Substation ... 31
12 Low-Voltage Protect Box for Mining flameproof Movable Substation ... 31
12.1 Technical requirements ... 31
12.2 Inspection rules, test items and methods ... 34
12.3 Marks ... 35
Bibliography ... 36
Mining Flameproof Movable Substations
1 Scope
This Standard specifies the terms and definitions, technical requirements, inspection
rules, test items and methods, marking, packaging, transport and storage of mining
flameproof movable substation (hereinafter referred to as movable substation) and its
components, namely the mining flameproof dry-type transformer (hereinafter referred
to as dry-type transformer), high-voltage load switch for mining flameproof movable
substation (hereinafter referred to as high-voltage load switch) or high-pressure
vacuum switch for mining flameproof movable substation (hereinafter referred to as
high-pressure vacuum switch), cable connector for mining flameproof movable
substation (hereinafter referred to as cable connector), and low-voltage feed switch for
mining flameproof movable substation (hereinafter referred to as low-voltage feed
switch) or low-voltage protect box for mining flameproof movable substation
(hereinafter referred to as low-voltage protective box).
This Standard is applicable to movable substation and its dedicated dry-type
transformer, high-voltage load switch or high-voltage vacuum switch, cable connector
and low-voltage feed switch or low-voltage protect box.
2 Normative References
The following documents are essential to the application of this document. For the
dated documents, only the versions with the dates indicated are applicable to this
document; for the undated documents, only the latest version (including all the
amendments) are applicable to this document.
GB/T 191 Packaging – Pictorial Marking for Handling of Goods
GB/T 311.1 Insulation Coordination – Part 1: Definitions, Principles and Rules
GB/T 1094.11 Power Transformers – Part 11: Dry-Type Transformers
GB/T 1984 High-Voltage Alternating-Current Circuit-Breakers
GB/T 1985 High-Voltage Alternating-Current Disconnector and Earthing Switches
GB/T 2900.1 Electrotechnical Terminology – Fundamental Terms
GB/T 2900.18 Electrotechnical Terminology – Low Voltage Apparatus
GB/T 2900.19 Electrotechnical Terminology – High-Voltage Test Technique and
Insulation Coordination
GB/T 2900.20 Electrotechnical Terminology – High-Voltage Switchgear and
Controlgear
GB/T 2900.35 Electrotechnical Terminology – Electrical Apparatus for Explosive
Atmosphere
GB/T 2900.95 Electrotechnical Terminology – Transformers, Voltage Regulators
and Reactors
GB/T 3309 Mechanical Test at Ambient Temperature for High-Voltage Switchgear
GB/T 3804 High-Voltage Alternating Current Switches for Rated Voltage above
3.6kv and less than 40.5kv
GB 3836.1 Explosive Atmospheres - Part 1: Equipment - General Requirements
GB 3836.2 Explosive Atmospheres - Part 2: Equipment Protection by Flameproof
Enclosures “d”
GB/T 11022 Common Specifications for High-Voltage Switchgear and Controlgear
Standards
GB/T 14048.1 Low-Voltage Switchgear and Controlgear - Part 1: General Rules
GB/T 16927.1 High-Voltage Test Techniques - Part 1: General Definitions and Test
Requirements
AQ 1043-2007 Mining Products Safety Label
JB/T 501 Test Guide for Power Transformers
JB/T 8739 Mine Explosion-Proof High-Voltage Distribution Device
MT 871 Mining Blast-Proof Switchgear with Vacuum Circuit Breaker for Low-
voltage Alternate Circuit
MT/T 947 Flameproof High-Voltage Cable Coupling Devices for Coal Mine
3 Terms and Definitions
For the purpose of this document, the terms and definitions given in GB/T 2900.1, GB/T
2900.18, GB/T 2900.19, GB/T 2900.20, GB/T 2900.35 and GB/T 2900.95 and the
following apply.
5 Inspection Rules, Test Items and Methods
5.1 Inspection rules
Each component of the movable substation shall be respectively inspected in
accordance with the provisions of the corresponding standards; the inspection
procedures shall be in accordance with the relevant provisions of GB 3836.1.
5.2 Test items and methods
5.2.1 Routine test
5.2.1.1 Each movable substation shall withstand the following routine test items:
a) Inspect the flameproof gas BETWEEN high-voltage load switch or high-voltage
vacuum switch, low-voltage feed switch or low-voltage protect box AND dry-type
transformer; and the flameproof gas BETWEEN high-voltage load switch or high-
voltage vacuum switch, low-voltage feed switch or low voltage protect box AND
cable connector according to the requirements of GB 3836.2;
b) Carry out short-time power frequency withstand voltage test according to the
requirements of GB/T 16927.1, and shall comply with the provisions of 4.3;
c) According to the different components of the movable substation and the
requirements for technical conditions of each product, inspect the routine test
report; and conduct connecting and disconnecting actions, and relevant tests
such as display, etc.
5.2.1.2 The enclosure of each component of the movable substation shall be subjected
to a static pressure test in accordance with the provisions of GB 3836.2.
5.2.2 Type test
5.2.2.1 The type test is a representative test that is conducted to verify whether the
product meets the specified technical requirements. It shall be carried out on the basis
of passing the routine test. When the products have the completely the same rated
values and structures or only have minor differences, the type test for one product may
represent them.
5.2.2.2 If the type test for each component of the mobile substation is qualified, the
type test for the movable substation shall be regarded as qualified.
5.2.2.3 Periodic type test shall be conducted at least once every five years.
5.2.2.4 Each component of the mobile substation shall be tested for enclosures and
e...