This standard specifies the classification, technical requirements, test methods, inspection rules and markings of live line lifting tools. This standard is applicable to 110~500kV live replacement suspension insulator string lifting tools. GB 15632-1995 General technical conditions for wire lifting tools for live work GB15632-1995 Standard download and decompression password: www.bzxz.net

National Standard of the People's Republic of China
General specifications for live-line lifting devices1Subject content and scope of application
GB15632—1995
This standard specifies the requirements for live-line lifting devices Classification, technical requirements, test methods, inspection rules and signs of work line lifting tools, etc. This standard is applicable to 110~500kV live replacement suspension insulator string lifting tools. 2 Reference standards
GB311.1-83 Insulation coordination of high-voltage power transmission and transformation equipment GB311.2~311.6-83 High-voltage experimental technology GB311.7-88 Guidelines for the use of insulation coordination of high-voltage power transmission and transformation equipment GB5129. 5-85 epoxy laminated glass cloth board
GB5131.2-85 epoxy laminated glass cloth pipe
insulating pulley for live work
GB13034-91
GB13035—91
GB13398-92
DL40991
DL408--91
Insulated ropes for live work
General technical conditions for insulating rods for live work Electrical Industrial safety work regulations
Electrical industry safety work regulations
Technical conditions for aluminum alloy and copper alloy forgings
QJ502-—804
General technical conditions for mechanical assembly||tt| |YB3205—80
YB3206-80
YB3207-80
YB3212--80
3 terms
General technical conditions for machining||tt| |General technical conditions for forgings
General technical conditions for heat treatment parts
The wire lifting tool is used to replace the insulation strength of the hanging insulator string and the mechanical load it bears. It consists of metal hangers at both ends, a length adjustment mechanism and a middle A general term for tools made of insulating parts for lifting conductors. 4 categories
Wire lifting tools can be divided into four categories: tubes, rods, plates and insulated ropes according to the different material shapes of the intermediate insulating parts. 5 Technical Requirements
5.1 General Requirements
5.1.1 Raw materials used for manufacturing live line lifting tools should be inspected in advance. 5.1.1.1 The metal parts at the end of the line lifting tool should be made of LC4 aluminum alloy material or materials that exceed its performance. The LC4 aluminum alloy material should be approved by the State Bureau of Technical Supervision on 1995-07-25 and implemented on 1996-08-01
Comply with QJ502 regulations. | |tt | Materials must comply with the requirements of GB13035; rod products must not be lower than the requirements of GB5129.5. 5.1.1.3 The material selection and inspection of the length adjustment mechanism can be specified according to the specific design requirements of the structure. 5.1.2 In wire lifting tools, all aluminum alloy parts should be surface anodized. After the insulating laminated material is made into parts, the processed surface should be insulated. The inner hole of pipe parts must be insulated. 5.1.3 After the parts of the wire lifting tool are processed and formed, each processed surface should be regular and smooth. The surface roughness of metal parts should be less than 6; the insulating parts should meet the appearance requirements in GB5129.5 and GB5131.2. 5.2 Electrical performance indicators of wire lifting tools
The electrical performance indicators of the type test of wire lifting tools shall be in accordance with the requirements of DL409 and comply with the provisions of Table 1. 5.2.1
Table 1
rated voltage
kv
110
220
330
500||tt ||5.2.2
Test length
m
1.00
1.80
2.80
3.70
Power frequency resistance Received voltage
electricity
voltage
kv
250
450
420
640
value
hour
time
min
1
1
5
strobe Network
Breakdown voltage
kv
≥300
≥510
15 operating shocks
Withstand voltage||tt| |kv
900
1175
The electrical performance indicators of the factory test of the wire lifting tool should be in accordance with the requirements of DL409 and comply with the provisions of Table 2. Table 2
amount
fixed
electricity
voltage
kv
110
220
330
500
5.3
Mechanical performance index of thread lifting tool
Test
Examination
Length
m||tt ||1.00
1.80
2.80
3.70
degree
electricity
voltage
kv
250
450
420
640
power frequency withstand voltage
value
The mechanical performance index of the wire lifting tool should be in accordance with DL409 requirements, comply with the provisions of Table 3. Table 3
Specifications of wire lifting tools
(level)
5.0kN level
10.0kN level
15.0kN level
allowed Load
kN
5.0
10.0
15.0
Dynamic load
kN
7.5
15.0
22.5
static load
kN
12.5
25.0
37.5
hour
min| |tt||1
1
5
5
interval
damage load
kN
15.0|| tt||30.0
45.0
Thread lifting tool specifications
(level)
20.0kN level
25.0kN level
30.0 kN level
35.0kN level
40.0kN level
5.4 Weight requirements of line lifting tools
allowable load
kN
20.0| |tt||25.0
30.0
35.0
40.0
GB15632-1995
Continued Table 3
Dynamic load||tt| | kN | | tt | | 30.0 | More than 10kg. 5.5 Minimum effective insulation length of the wire lifting tool Static load
kN
50.0
62.5
75.0
87.5
100.0||tt ||The minimum effective insulation length of the wire lifting tool should be in accordance with the requirements of DL409 and comply with the provisions of Table 4. Table 4
Voltage level, kV
Minimum insulation length, m
110
1.00
5.6 Shape requirements for the contact surface between the wire lifting tool and the wire 220
1.80
The arc shape of the contact surface between the wire lifting tool and the conductor shall comply with the requirements of Table 5. Table 5
Guide
Structural requirements
Line
Gauge
Grid
R,mm
r,mm| |tt||s.mm
h,mm
150
140
14
45
3
5.7 The contact surface between the wire lifting tool and the conductor should be lined with rubber material. 5.8 The shape of each part of the wire lifting tool should be rounded, and there should be no sharp edges and corners. 330
2.80
185~240
200
18
50
4
Destruction load
kN||tt| |60.0
75.0
90.0
105.0
120.0
500
3.70
300~400||tt| | 280 | | tt | | 22 | | tt | 5.10 Test items for wire lifting tools
Each specification of wire lifting tools shall undergo electrical performance tests and mechanical performance tests in accordance with the technical requirements of this chapter. 6 Test method
6.1 General conditions of the test
GB15632-1995
Figure 1 Structural diagram of the contact surface between the tool and the wire R—radius of the longitudinal section of the groove bottom; r—cross section of the groove bottom Radius; s—groove depth; h—rubber pad thickness 6.1.1 Collection of component samples
6.1.1.1 Sample collection of insulating material parts Each batch of insulating material parts must have the materials supplied by the manufacturer before leaving the factory Inspection certificate. The inspection date shall not exceed 18 months. If it exceeds, the products must be re-sampled and inspected according to the standards for insulating material products. The sampling method is carried out in accordance with the relevant standards. 6.1.1.2 Collection of forging samples
Collection of forging samples shall be carried out in accordance with the contents of YB3207. 6.1.1.3 Sampling or sampling methods of heat-treated parts Parts heat-treated in the same furnace are allowed to be randomly inspected, and the number of random inspections shall be in accordance with the provisions of YB3212. 6.1.1.4 Sampling method of the wire lifting tool assembly. All wire lifting tools after assembly need to be carried out in accordance with the provisions of this standard, including electromechanical tests except destructive tests. Pre-production tools should include destructive testing.
6.1.2 Preparation of specimens
The preparation of specimens of insulating material parts for wire lifting tools shall be carried out in accordance with relevant standards. Metal material parts are in the finished state or samples taken during processing.
6.2 Electrical test
The high voltage test shall be carried out in accordance with the regulations of GB311.
6.2.1110kV and 220kV voltage level power frequency flashover breakdown test of insulated parts of line lifting tools. Use three insulating component samples of the same specification to conduct power frequency flashover breakdown test respectively. The breakdown voltage value should comply with the requirements of Table 1, and the flashover breakdown voltage should meet the requirements of Table 1 to be qualified. 6.2.2 Power frequency withstand voltage test of the insulating parts of the line lifting tool GB156321995
Use three insulating parts of the same specification to conduct the power frequency withstand voltage test respectively. The power frequency withstand voltage value should comply with the provisions of Table 1. It is qualified if there is no breakdown, no flashover and no heating. bZxz.net
6.2.3330kV and 500kV voltage level operating impact withstand voltage test of insulating components of wire lifting tools. Use three insulating component samples of the same specification to perform the operating impact withstand voltage test 15 times respectively. The operating impulse withstand voltage test voltage The value should comply with the provisions of Table 1, and it is qualified if there is no primary breakdown, flashover and overheating. 6.3 Mechanical test
6.3.1 Mechanical strength test of each component of the wire lifting tool After each component of the wire lifting tool is processed and formed, a mechanical strength test must be carried out. Use three parts of the same type to conduct mechanical strength tests respectively. The load position and direction should be the same as those in actual use. The items and indicators of the mechanical strength test should comply with the provisions of Table 3 and meet the requirements of the specific structural design. 6.3.2 Tensile strength test of the wire lifting tool assembly. The assembled wire lifting tool must undergo a tensile strength test of the entire assembly. Use three sets of wire lifting tools of the same specification and arrange them horizontally as shown in Figure 2. For any wire lifting tool that directly hooks the conductor, a force-balanced end frame that matches the wire lifting hanger must be used during the test to balance the load at each stress-bearing position of the hanger. T7777777
Figure 2 Schematic diagram of the specimen layout during the tensile strength test of the assembly 1 - Tensile test device; 2 - Test force measuring instrument; 3 - Balanced end frame for testing the lower end side of the specimen; 4 - Test piece Lower end hanger group; 5 - test piece middle insulating component group; 6 - test piece length adjustment mechanism, 7 - test piece upper end hanger group; 8 - test piece upper end side fixing device
6.3.2.1 lifting wire Tool assembly dynamic load tensile strength test applies an external tensile force of 1.5 times the allowable working load value to the sample (the loading speed within this dynamic load is not limited) and is actually operated for three times. The tool is flexible, light and has no jamming phenomenon. to be qualified. 6.3.2.2 In the static load tensile strength test of the wire lifting tool assembly, an external tensile force of 2.5 times the allowable working load value is applied to the sample. The loading speed within this load should rise evenly and slowly (generally, a stress increase of 1MPa/s is used) speed), impact loading is not allowed. The sample is qualified if it lasts for 5 minutes under the maximum static test load. After unloading, the parts of the tool do not undergo permanent deformation or damage, the screw of the length adjustment mechanism moves freely, or the hydraulic system is intact. 7 Inspection Rules
7.1 Type Inspection
Thread-lifting tool products before finalization must be type-inspected according to this standard. The items included in the type inspection are the following tests stipulated in this standard: power frequency withstand voltage test of insulating parts of line lifting tools; a.
Flashover breakdown test; c.
Operation impact withstand voltage test of insulating parts of wire lifting tools with voltage levels of 330kV and 500kV; Tensile strength test of wire lifting tool assembly. d.
GB15632-1995
Thread lifting tool products that fall into one of the following situations should undergo type inspection, and no less than 3 products should be sampled during product finalization appraisal. Trial design appraisal of new thread lifting tool products put into production or old products transferred to factory for production; a.
When the tool structure has been greatly changed after formal production; b.
c. When tool products are resumed after being discontinued for more than one year; d. When the national supervisory agency requests routine inspections. 7.2 Factory inspection
The appearance inspection and dimensional inspection of the tool must be carried out before leaving the factory. It shall comply with the appearance and size regulations of this standard and GB5129.5 and GB5131.2. Destructive tensile strength must be eliminated. The mechanical tests other than the strength test and the electrical performance test of the product before leaving the factory should comply with the standards; the assembly of each component must comply with the requirements of YB3205, and the processing inspection of the length adjustment mechanism must comply with the requirements of YB3206 and its mechanism design drawings.
7.3 All products produced by the manufacturer of thread lifting tools shall comply with these regulations. Tool products should have certificates and instructions for use. 7.4 The receiving department of line lifting tools has the right to inspect the tools in accordance with the provisions of this standard. If it is found that it does not meet the technical requirements of this standard, the product will be deemed unqualified. The receiving department reserves the right to return goods. 8 Marking, packaging, transportation and storage
8.1 Mark
8.1.1 Mark position
Each component of the thread lifting tool must be marked. The markings on the upper and lower aluminum alloy hangers should be placed on a flat and eye-catching place on the outer surface of the part; the markings on the insulating parts should be placed on the outer surface of the metal parts connected at both ends; the markings on the length adjustment mechanism should be placed on The flat outer surface of the shell.
8.1.2 Manufacturing method of the mark
Using aluminum skin as the material, the front side is marked with the logo content, and the back side is glued to the selected part of the outer surface of the tool. 8.1.3 Mark content
The nameplate mark of the thread lifting tool must have the following content: tool name, trademark or model, manufacturing date, and manufacturer name. Insulated parts should be marked with voltage levels. 8.2 Packaging
8.2.1 Packaging of insulating parts of wire lifting tools
Insulating parts should be packed in layers with canvas sleeves, plastic sleeves and wooden boxes. 8.2.2 Packaging of metal hangers for string lifting tools
8.2.3 Packaging of the length adjustment mechanism of the thread lifting tool The length adjustment mechanism should be packed in a special work suitcase and packed in a wooden crate. 8.2.4 The name of the manufacturer, the name of the product, the gross and net weight and the date of shipment should be marked on the packaging box. In addition, "moisture-proof", "sealed", "handle with care", "do not turn upside down", etc. must also be marked. 8.3 Transportation
When transporting line lifting tool products for live operations, they should be packed into special tool bags, tool boxes or special tool carts to prevent moisture and damage. 8.4Storage
Thread lifting tool products should be stored in a clean and dry special room with good ventilation and equipped with infrared bulbs or dehumidification facilities. If the storage period exceeds the production date by 12 months, electrical performance inspection shall be carried out in accordance with this standard. Additional Notes
GB 15632-1995
This standard is proposed by the Ministry of Electric Power Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Live Works. The participating units of this standard are East China Electricity Management, Changsha Electric Power Bureau, and Hanzhong Power Supply Bureau, Northeast Electric Power Experimental Research Institute This standard is drafted by Beijing Power Supply Bureau. The main drafters of this standard are Wei Huanjia and Jian.
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