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Help CenterSuspension Insulator Suspension Porcelain Bottle 35kv Tension Line Disc Suspension Porcelain Insulator Manufacturer
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Main Technical Specifications: The following are typical parameters of disc suspension ceramic insulators commonly used for 35kV tension lines. Actual supply can be customized according to engineering requirements.
| Item | Typical Value/Range |
| Nominal Structural Height | 146mm |
| Nominal Disc Diameter | 254mm |
| Nominal Creepage Distance | 320mm |
| Mechanical Failing Load | 70kN / 100kN |
| Power Frequency Wet Withstand Voltage per Unit | 45kV |
| Lightning Impulse Withstand Voltage per Unit | 100kV |
| Connection Type | Ball-and-Socket Connection / Ball Head Connection |
Raw Materials and Process Control: Hejian Haokang Electric Co., Ltd. selects high-quality raw materials such as high-alumina electrical porcelain clay, feldspar, and quartz. Through strict classification screening and ball-mill fine grinding, the particle size of raw materials is controlled within an appropriate range. Processes such as iron removal, filter pressing, and vacuum pugging are then used to remove impurities and air, ensuring a dense and uniform body. The products are formed by advanced jiggering or isostatic pressing processes, resulting in good dimensional consistency and high green strength of the porcelain parts. The glazing process uses automated glaze pouring, producing a uniform glaze layer thickness that effectively enhances the surface insulation performance of the porcelain parts. During the firing process, the heating rate, soaking time, and cooling curve are controlled to promote full development of mullite crystals, achieving high mechanical and electrical strength. Advanced process control greatly reduces the occurrence of defects such as internal pores and micro-cracks in the products.
- Mechanical Performance Advantages: The porcelain parts have high flexural and tensile strength, and the per-unit mechanical failing load is stable. When assembled into tension strings, they provide a sufficient safety factor to cope with extreme conditions such as conductor tension fluctuations, galloping, and icing.
- Electrical Performance Advantages: The large creepage distance and disc diameter design effectively reduce surface leakage current and improve pollution withstand capability. The semiconductive properties of the glaze layer make voltage distribution more uniform and reduce partial discharge.
- Long-term reliability: The porcelain material has good chemical stability, is resistant to acid, alkali, and salt spray corrosion, and resists UV aging; hot-dip galvanized accessories extend the overall service life of the product and reduce the frequency of maintenance and replacement.
- Easy installation: The standardized ball-and-socket dimensions are compatible with common hardware fittings on the market such as tension clamps, ball-clevis fittings, and ball-eye hooks. Installation requires no special tools, and it also facilitates later inspections and zero-value detection.
Typical application scenarios: This product is suitable for tension towers of 35kV transmission lines, including line angle towers, terminal towers, branch towers, and long-span sections. In newly constructed lines, single-string or double-string configurations can be selected based on force calculations; in renovation of old lines, it can replace old insulators with deteriorated mechanical performance or insufficient creepage distance, thereby improving the overall insulation level of the line. In addition, this product can also be used for insulation support of down-lead conductors on 35kV substation structures and for line-side insulation at the incoming section of substations.
Installation and maintenance points: During transportation and installation, insulators should be protected from impact on the porcelain parts, and must not be dropped from heights. When lifting, flexible slings should be used to prevent damage to the steel caps. Before installation, check whether the porcelain parts have cracks or the glaze is damaged, and wipe off surface dust with a clean cloth. When assembling tension strings, ensure that the ball and socket of each insulator are properly connected to avoid disconnection; at the same time, adjust the direction of force so that the insulator string is uniformly stressed. After the line is put into operation, it is recommended to conduct pollution degree detection and infrared thermometry on insulators every 1 to 2 years, clean surface dirt promptly, and replace zero-value and low-value insulators in time to prevent flashover accidents.
Hejian Haokang Electric Co., Ltd. has long been supplying line porcelain insulators including suspension, pin, porcelain cross-arm, porcelain tension rod, spool, strain, traveling, and line post types. It also provides station porcelain insulator products such as indoor and outdoor post insulators, wall bushings, and rod post insulators, as well as various electrical porcelain sleeves and components. The company serves customers in the power industry with stable and reliable product quality and a pragmatic and honest business attitude. Both new and old customers are welcome to make inquiries and visit our factory. We are willing to establish long-term and extensive cooperation with you. If you are planning a 35kV tension line project, we suggest you provide information such as the pollution level of the area the line passes through, the line tension, the conductor type, and the altitude. Based on actual operating conditions, we will recommend appropriate insulator types, numbers of pieces, and string configuration schemes, and provide necessary technical documentation and after-sales support to ensure your line operates safely and economically.
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