JB/T 6466-1992 Indoor and outdoor porcelain-sleeved terminals for power cables with rated voltages up to and including 8.7/10kV JB/T6466-1992 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
Indoor and outdoor porcelain-sleeved terminals for power cables with rated voltages up to and including 8.7/10kV
1 Subject content and scope of application
JB646692
This standard specifies the product marking and code, technical requirements, test methods, inspection rules and markings, packaging, transportation and storage of indoor and outdoor porcelain-sleeved terminals for power cables with rated voltages up to and including 8.7/10kV. This standard applies to indoor and outdoor porcelain-sleeved terminals for oil-impregnated paper insulated power cables with rated voltages of U./U up to and including 8.7/10kV, and the use conditions shall comply with the provisions of Article 4.1 of GB11033.1. 2 Reference standards
GB2900.10
GB11033
GB5589
GB9327
3 Terminology
Electrical terminology Wires and cables
Basic technical requirements for power cable accessories with rated voltage of 26/35kV and below Technical conditions for high-voltage insulator porcelain parts
Crimp-type copper and aluminum terminals and connecting tubes for power cable conductors Test methods for cable accessories
Test methods for compression and mechanical connection joints of cable conductors Test method for high-voltage insulators for AC systems Artificial pollution migration test method Salt spray method High-voltage test technology Part 2 Test procedure This standard adopts the terms specified in GB2900.10 and GB11033.1. 4 Product marking and code
4.1 Code
4.1.1 According to series
Indoor terminal series
Outdoor terminal series.
4.1.2 According to structural features
Porcelain sleeve type
4.1.3 According to shape to be categorized
Round: 3-core or 4-core cable, the conductor insulation leads upward and is evenly distributed along the circumference....Fan-shaped: 3-core or 4-core cable, the conductor insulation leads upward and is arranged on a plane"Inverted: 3-core or 4-core cable, the conductor insulation leads downward. 4.1.4 According to shell material
Ministry of Machinery and Electronics Industry 1992-08-06 Approved N
2 (Provincial Road)
1993-0101 Implementation
Aluminum alloy
Glass fiber reinforced plastic.
Insulators·
4.1.5 According to the design sequence
First design
Second design
(and so on)
4.1.6 According to voltage level
1.8/3kV and below..
3.6/6.6/6, 6/10kV..
8.7/10kV..
4.1.7 According to the number of cable cores
4.2 Product representation method
4.2.1 The composition and arrangement order of the product model are as follows JB6466-92
JB6466-92
Cable core number code|| tt||Voltage level code
Design frequency code
Shell material code
Shape feature code
Structural feature code
Series code
4.2.2 Example
8.7/10kV 3-core cable outdoor round cast iron porcelain sleeve terminal, first design. a.
Indicated as WCY-1-33JB6466--92
b.3.6/6kV, 6/6 or 6/10kV 3-core cable outdoor round aluminum alloy porcelain sleeve terminal, first design. Indicated as WCYL-1--23JB6466-92
c.8.7/10kV 3-core cable outdoor round aluminum alloy porcelain sleeve terminal, second design Design. Indicated as WCGL-2-33JB6466-92
d.3.6/6kV, 6/6 or 6/10kV 3-core indoor sector soft porcelain sleeve terminal, second design. Indicated as NCS2~23JB646692
5 Technical requirements
In addition to meeting the requirements of Class I terminals specified in GB11033, porcelain sleeve terminals shall also meet the following requirements. 58
3月6466-￥2
5.1 All metal parts of the terminal basin that are subject to atmospheric influence shall be subjected to surface thermal treatment according to the requirements of Tengdi 5.2 The porcelain sleeve shall meet the requirements of GE772
5.3 The cable entry sleeve has a sealing and straightening type, and the entry sleeve shall be left in the wrong direction. The order of the cable entry sleeve should be obtained by the contractor. Smooth and complete
5.4 Conductor connection fittings shall comply with the national standard for crimping steel, terminal blocks and data connection for power cable conductors: The DC resistance of the terminal post shall not be greater than 1.2 of the direct current resistance of the same length of fine aluminum conductor. 5.5 The installation dimensions of the terminal box and the bracket shall comply with the provisions of Figure 1 and Table 1. a.3 Holes
Figure 1 Installation holes for fixing the terminal box and the bracket
Note that the tolerances of L, Lt, and L are in accordance with the requirements of IT13 level, and the required tolerances are shown in Figure 1. 5.6 Grounding wire
The terminal grounding wire material shall be plated copper wire, and the cross-section of the grounding wire is recommended to be selected according to the provisions of Table 2. 8
JB6↓66-92
Main cable core section
35 and below
5G~120
150~300
5.7 Sealing performance
50 and below
185~300
5.7.1 The terminal box made of metal material should be able to withstand 0.3MPa air pressure and a sealing performance test lasting 1min. The box should not leak during the entire test.
5.7.2 The terminal box should be able to withstand 0.3MPa hydraulic or air pressure and a sealing performance test lasting 15min. The pressure gauge should indicate stable during the entire test and the terminal box should not stagnate. 5.8 Mechanical properties
The terminal box should be able to withstand 0.8MPa hydraulic pressure and a mechanical performance test lasting 1min. During the entire test, the terminal box should not break or leak.
5.9 Electrical performance
According to the installation process instructions provided by the manufacturer, install the provided electrical terminal box, various installation components and materials at the end of the cable of corresponding specifications with reliable performance, and then conduct electrical performance tests. The test items and requirements shall comply with the provisions of Table 3 and Table 4, and the number of test samples shall comply with the provisions of GB11033.2.
5.10 The terminal box shall have structural components for clamping cables, and the surface of the components shall be treated according to the anti-corrosion requirements. 5.11
The distance between the exposed conductors of the terminal box and the relative distance to the ground shall comply with the provisions of Appendix D. The main properties of the insulating sealing materials used in the terminal shall comply with the provisions of Appendix A, B, and C. Table 3
Test voltage
Test items
Power frequency voltage test
Dry state 1min
Mixed state 1min
Implant pressure load cycle
126 cycles
117 cycles
Load cycle test
(without voltage)9 weeks
Short circuit test
Short circuit thermal stability
Short circuit dynamic stability
6/6,
8.7/10,
(Conductor is heated by current for 5h and cooled for 3h. The highest temperature of the conductor during heating is the allowable working temperature of the cable plus 5C)bzxz.net
(Conductor is heated by current for 5h and cooled for 3h. The highest temperature of the conductor during heating is the allowable working temperature of the cable plus 5C. The entire cable end sample should be Assuming it is submerged in water)
(Each sample is short-circuited twice, and the current value should comply with the provisions of Table 1 of CB11033.1)
(Each sample is short-circuited once, and the current is 63
Test method
GB11033.1
Article 5.1
In the test
No flashover, no breakdown
Evaluated by subsequent tests
Evaluated by subsequent tests
Evaluated by subsequent tests
Test series
Indoor terminals
Outdoor terminals
Test items
Salt spray test 1h/time
Repeat three times (containing
NaCl5%, can also be selected as required)
Impulse voltage test
1.2/50μs
±10 times
DC voltage test
Negative polarity 15min
Power frequency voltage test
Radio interference test
Test measurement 1MHz
Interference signal voltage
No more than V
Appearance inspection
Test items
Power voltage test
Dry state 1min
Wet state 1min
Test voltage value
6/6,|| tt||JB6466—92
Continued Table 3
Test methods
8.7/10,
CB4585.1 and
(Appearance inspection is required after all cable terminal samples have passed all tests)
GB11033.2
Article 2.3.2
According to GB4585.1
No breakdown, positive and negative poles
GB311.3 and
allow flashover
GB 11033.1
Article 5.3
GB311.3 and
GB11033.1
Article 5.2
GB11033.1
Article 5.1
under consideration
test voltage value
once, but not included
in the total number of tests
no flashover, no breakdown
no flashover, no breakdown
discharge under the specified test
voltage. Dry
The signal is not greater than
the specified value
No cracks, deformation,
drowning insulation
Test method
GB11033.1
Article 5.1
Test series
Indoor terminal
No flashover, no breakdown
Outdoor terminal
Test procedure
Indoor terminalOutdoor terminal
Test items
Impact voltage test
1.250 ges
Cylinder current test
Negative polarity 15mia
Power frequency voltage test
Test method
JB 6466--92
Test voltage value
Test method
GB311.3 and no breakdown. Positive and negative polarity are each allowed to flash over once. But it is not included in the total number of tests
GB311.3 and
GB33.1
Article 5.2
GB11033.1
Article 5.1
Article 5.2The requirements specified in the test method specified in CB772 shall be followed. The requirements specified in Article 5.4 shall be tested according to the test method specified in GB9327.2. 6.2
The requirements specified in Article 5.7 shall be tested according to the provisions of GB5589.4. The requirements specified in Article 5.3 shall be tested according to the provisions of Article 5.11 of GB11033.1. 9.4
No flashover, no breakdown
No flashover, no breakdown
The requirements specified in Article 5.9 shall be tested according to the test method specified in Table 3 or Table 4. 5.s
The requirements specified in Articles 5., 5.3 and 5.10 shall be tested by day force. Inspection rules
Indoor terminal Outdoor terminal
7.1 Products shall be inspected and qualified by the technical inspection department of the manufacturing unit before they can be shipped out of the factory, and the shipped products shall be accompanied by a product quality inspection certificate. 1.2 The product shall be subjected to type test in accordance with the requirements of Articles 5.1 to 5.8, Table 3 of Article 5.9 and Articles 5.10 to 5.12. The number of test samples and the evaluation method of test results shall comply with the corresponding provisions of Class I terminals in GB11033. 7.3 Sampling test
7.31 During normal production, a sampling test shall be conducted once every 3 to 5 years. It shall also be conducted when the user makes a request and both parties agree. 7.3.2 The product shall be subjected to sampling test in accordance with the requirements of Articles 5.4 to 5.6, Article 5.7.2, Article 5.8, Table 4 of Article 5.9, Article 5.11 and Article 5.12. The number of test samples and the evaluation method of test results shall comply with the corresponding provisions of Class I terminals in GB11033. 7.4 Routine test
The product shall be subjected to routine test in accordance with the requirements of Articles 5.1, 5.3, 5.7.1 and 5.10. 8 Marking, packaging, transportation and storage
Terminal boxes must be marked with obvious and permanent markings when leaving the factory. The markings are as follows: 8
Manufacturer name;
Product model, name, product standard number: Rated voltage:
Conductor material, cross-section and core effect;
Factory expiration date number.
JB6466-92
The terminal box and its accessories should be properly packed to prevent loosening and loss of parts. The corresponding protective equipment should be provided. 8.2.1
Materials with a shelf life must be marked with the date of manufacture and shelf life. The outside of the package should be marked with "Handle with Care" and "Information" and other large marks.
The package box should be accompanied by a list of materials and installation process instructions. The package box should indicate:
Manufacturer name;
Product model, name, product certificate; rated voltage;
Conductor material, cross-section and core effect;
Weight;
Factory notice date and number.
8.3 Transportation
Products should be protected from strong vibration and impact during transportation. Strike. The terminal boxes should be stored in a dry, ventilated warehouse with fire prevention measures. The storage of all parts and accessories should comply with the specified requirements.
Asphalt-based pouring agent for cable accessories See Table A1 Items
Shrinkage rate (150~20℃)%
Deepness of recess after shrinkage
Minerals (ash)%
Adhesion rate%≥
Free sulfur
Permeability
Heating loss%
Water absorption (2mm, 6.5mm2h and 24h)
Water-soluble acid or alkali
Softening point (ring and ball method)
Solubility (benzene)%
Flash point (open) ≥
Breakdown strength (2.5mm) || tt||60℃1min)
Pouring temperature C
Frost crack point≤
JB646692
Appendix A
Asphalt-based casting agent for cable accessories
(Supplement)
120~140
150~160
160~170
170~180
180~190
JB6466—92
Appendix B
Rosin petroleum-based fluid insulating agent for cable accessories (Supplement)
Rosin petroleum-based fluid insulating agent for cable accessories See Table B1Table B1
Project name
Kinematic viscosity m/sAperture 5mm
Specific gravity 2 5℃
Flash point (℃）≥
Ignition point (℃)
Pouring temperature (C)
Acid value (KOHmmg/g)≤
Shrinkage (150~20℃)%
Free high sulfur
Ash content%≤
Crystallization 80℃300h
Breakdown strength (kV/mm）20℃>| |tt||Dielectric loss tangent tg320℃
Dielectric constant 40~60℃
Volume resistivity (n·cm）
100℃
Appendix C
Performance index
6×10-~7×10-
1.4X10-~1.6×10~3
0.89~0.95
5×102
Asphalt alkyd glass varnished cloth tape for cable accessories (supplement)
Asphalt alkyd glass varnished cloth tape for cable accessoriesSee Table C1Table C1
Tensile strength (N/15mm width)
Elongation %≥
Volume resistivity (n·cm)
Dielectric constant e
Breakdown strength (kV/mm)
130℃
Dielectric loss tangent t ge (%) 20℃
Oil resistance After immersion in low-voltage cable oil at 105℃ ± 2℃ for 48h Water absorption (%)
After immersion in 20℃ water for 24h≤
Energy index
The paint layer should not be sticky and peel off
JB646692
Appendix D
Requirements for the phase-to-phase and relative distances between bare conductors in terminal boxes (reference)
Requirements for the phase-to-phase and relative distances between bare conductors in terminal boxes are shown in Table D1. D1
Rated voltage U./U
Indoor type
Outdoor type
1.8/3 and below
3.6/6.6/6, 6/10
Additional instructions:
This standard is proposed and managed by Shanghai Cable Research Institute of the Ministry of Machinery and Electronics Industry. 8.7/10
This standard was drafted by Shanghai Cable Research Institute of the Ministry of Machinery and Electronics Industry and Cable Accessories Professional Committee of Wire and Cable Association of China Electrical Equipment Industry Association.
The main drafters of this standard are Ge Guangming, Zhou Mingyang and Wu Meisheng. 66
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