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Insulator technical regulation


Insulator
Technical Regulation

Content

1 General rules

2 Technology conditions

3 Design and manufacturing

4 Test and inspection

1 General rule The technology conditions apply to XX lines for engineering composite insulator in the design, manufacture, test and inspection, packaging and supply requirements. 1.1Technical 1.1 This technical conditions and drawing contains the technology of the composite insulator and finishing should comply with the international most advanced manufacturing and assembly practice, with the composite insulator should be brand new, unused, and its design and manufacture according to the buyer should be approved drawings, design data and files. Not for drawing and the technical conditions of the missing book, neglect and not clear and free to provide first class the insulator, quality and service of responsibility, if found to have any defects and not clear place, the seller shall timely notify the buyer, in not clarify any before measures, of the seller. 1.2 Standard 1.2 1) The technical conditions provided in books and drawings of outside requirements, the seller shall follow the national standards and relevant industry standard to the latest version. Table 1 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 Standard No. GB/T 19519-2004 JB/T 8460-1996 GB/T 4056-2008 JB/T 3384- 1999 GB/T 4585-2004 GB 311.1-1997 GB/T 775.1-2006 GB/T 775.2-2003 GB/T 775.3-2006 JB/T 8177-1999 JB/T 8181-1999 DL/T 557-2005 JB/T 9673-1999 Main standard for insulator products Name of standard Nominal voltage is higher than 1000 V overhead lines of communication with composite insulator-definition, test method and acceptance criteria High voltage lines form with great suspension type composite insulator size and characteristics Insulator string ball of components of the nest connection size High voltage insulator: the sampling plan Communication with high pressure system of an insulator artificial contamination test High voltage power transmission and transformation equipment in the insulation coordination Insulator test method part 1: general test method Insulator test method part 2: electrical test method Insulator test method, part 3: mechanical test method Insulator metal accessories hot dip galvanized coating: the general technical conditions Insulator string ball nest with elements connected lock pin High voltage lines in the air breakdown test insulator impact-definition, test method and criterion Insulator: product packaging

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DL/T 864-2004

Nominal voltage is higher than 1000 V ac overhead lines with composite insulator use guideline

easures 1.3 Measures In the design information, technical conditions and drawings and other documents, should use SI metric unit. By degrees Celsius temperature should be unit. 1.4 Special tools and instruments The seller shall provide the products with special instrument to, the equipment should be new and good performance.

2 Technology conditions
2.1 In the paper
Composite insulator should be the ball, bowl connection type. 2.1.1 Use environment condition Table 2 No. 1 2 3 4 5 6 7 8 Installation Sea level Height(m) Environment temprature(℃) Sunlight(W/cm2,speed of wind/s) Icing thickness(mm) Max speed of wind(m/s) Annual average relative humidity(%) Filthy degree 2.1.2 Electrical and mechanical properties Table 3 No. Code of insulator Composite insulator electrical and mechanical properties FXBW4-220/100 <1000 -10~40 0.1 10 30 90 Ⅱ、Ⅲ Insulator using environment Item Content

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1 2 3 4 5 6 7 8 9

Nominal voltage(kV) Rating mechanical load(kN) Length(mm) Min dry arcing distance(mm) Creepage distance(mm) Metal connection mark

220 100 2240 1980 ≥6300 16

Lighting impulse withstand voltage ≥1000 (kV) Power frequency withstand voltage ≥395 (kV) Outer dia of grading ring(mm) HV:305

3. Design and manufacturing
At least two part of composite insulators by insulators composition, namely mandrel and sheath, and matches by the hardware connection. 3.1 The composite insulator FRP rod Composite insulator FRP rod is the inner insulation parts, used to ensure that the design of the mechanical strength. Mandrel resin with glass fiber reinforced bar is made. FRP rod should be able to in a wide range of temperature under the mechanical load in the long term, you should also inherit long-term electrical stress and short-term electricity peak stress. FRP rod should be able to keep stable temperature conditions in, in dynamic load condition have high mechanical strength. Mandrel in longitudinal and transverse dielectric strength spun glass content hygroscopic, etc should meet the strict quality control standards. Mandrel resin with glass fiber reinforced bar of stress corrosion resistance is made of rods. 3.2 The composite insulator sheath and umbrella skirt. Sheath composite insulator is outer insulation parts, it provides the required creepage distance and protection of rods from weather, with insulating material made of umbrella skirt is part of the sheath. Umbrella skirt is sheath protruding to increase creepage distance. Umbrella skirt can have an umbrella

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edges can also be no umbrella edges. Silicone material should be. To sheath and umbrella skirt material request is: 1) Climate sex in order to prevent the oxygen resistance, ozone, ultraviolet radiation and the rapid aging caused by water. 2) High resistance to tracking the mark sex to prevent formation conductive path. 3) High corrosion resistance to prevent sheath or umbrella skirt breakdown. 4) Long-term hydrophobic to reduce the discharge and aging. 5) tear strength, high to prevent handling and installation damage. 6) High resistance to hydrolysis sex to prevent increase the conductivity of the material. 7) In the temperature range high flexibility and can keep a very low (glass transformation) temperature, to prevent the low temperature and temperature caused a sharp change crack or rupture. 8) In any case, have prevented birds and insects, rodents to pluck the sheath and umbrella skirt ability. To ensure the effectiveness of the protection of rods and persistence, connection interface (core nice-sheath, sheath-hardware) must is high quality, coating of silica gel sheath shall be subject to high pressure and high temperature, vacuum injection molding process. 3.3 Composite insulator metal fittings Metal fittings are part of the composite insulator, used for the Eiffel Tower or wire connection. Metal fittings use commonly galvanized steel forgings and must have appropriate extension with can and mandrel connection. In addition to all of the stainless steel iron metal parts should be in accordance with JB/T 8177-1999 "insulator metal accessories hot dip galvanized coating: general technology conditions of galvanizing. At the end of the hardware connection area can be considered as a kind of mechanical melt silk (fuse), it had decided the insulator rated the mechanical strength. Connection of the design principle is to ensure that the ideal stress distribution in case of damage to the glass fiber core great characteristic reduced. In addition, it also should guarantee the composite insulator long-term mechanical and electrical properties. Mandrel and hardware is used between the pressure meet, not the wedge-shaped connection. In normal operation conditions, metal parts up dizzy voltage and radio interference level in the allowable value should be within.

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Metal fittings connection size should conform to the state standards mark 16 mm requirements. In order to reduce the insulator internal and external potential gradient, and put the radio and electromagnetic interference down to allow level, insulator high pressure end need to install pressure ring. Pressure of materials should be used in the ring aluminum or aluminum alloy. 3.4 Mark Each composite insulator should mark factory name or trademark, manufacturing date. Each composite insulator should mark the use of voltage and rated mechanical load. Mark should be used in metal fittings relief molding. 3.5 Maintenance Provide the insulator should be suitable for charged maintenance technology, make can be convenient, fast and securely usually charged operation.

4. Test and inspection
According to the IEC, GB test and other relevant standards, and the technology of the requirements of the test, the test fee shall be borne by the seller. Without the type testing or sampling test insulator may not be used to supply. 4.1 Test them one by one According to the following projects one test, such as the discovery of any a do not conform to the requirements, the only insulator not qualified. 1) Inspection of GB/T-19519 and GB/T-775.1 execution. 2) Tensile load test according to GB/T-19519 and GB/T-775.1 execution. 3) Industrial frequency tolerance test voltage of GB/T-19519 execution. 4.2 Sampling test Sampling test according to GB/T 19519-2004 article 7 execution. 4.3 Type test In one type test after test, the test as long as there is a insulator is not in conformity with the test of any project a requirements, the type testing is not qualified. 1) At the end of the area and interface connection accessories test: A) Do flash power frequency network test: according to GB/T 19519-2004, try product number only for 3 B) Suddenly unload test: according to GB/T 19519-2004, try product number for a 3) only.

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C) The heat engine test: according to GB/T 19519-2004, try product quantity for b) after only three. D) Boiled test: according to GB/T 19519-2004, try product quantity for c) after only three. E) Inspection: according to GB/T 19519-2004, try product quantity for d) after only three. F) Steep slope impact test: according to GB/T 19519-2004, try product quantity for e) after only three. G) Industrial frequency voltage test: according to GB/T 19519-2004. Try product quantity for f) after only three. 2) Umbrella set up mark and electrical erosion test: according to GB/T 19519-2004, try product quantity for two. 3) Mechanical strength-the time trial: according to GB/T 19519-2004, try product number only 6. 4) Insulator FRP rod test: A) Penetration test: according to GB/T 19519-2004, try product number only for 10. B) Water diffusion test: according to GB/T 19519-2004, try product number only 6. 5) Size and creepage distance check: according to GB/T 19519-2004 and GB/T 775.1-2006, try product quantity for nine. 6) Zinc layer test: according to GB/T 19519-2004 and JB/T 8177-1999, try product number only for 3. 7) Lock pin operation test: according to GB/T 19519-2004 and JB/T 8181-1999, try product number only for 3. 8) Rated mechanical load resistance test: according to GB/T 19519-2004, try product number only for 3. 9) 70% rated mechanical load resistance test: according to GB/T 19519-2004, try product number only for 3. 10) the total wave impact resistance lightning voltage test: according to GB/T 19519-2004 and GB/T 775.2-2003, try product number only for 3. 11) Industrial frequency a minute wet tolerance test: according to GB/T 19519-2004 and GB/T 775.2-2003, try product for the number 10) of 3 only after. 12) Operation impact wet tolerance voltage test: according to GB/T 19519-2004 and GB/T 775.2-2003, try product for the number 11) of 3 only after. 13) Stress corrosion resistance test and mechanical drawing damage load contrast test, according to the DL/T 864-2004 appendix B test method, try product number six.

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