The HY5WS-17/50DL-TB arrester is the basis for the insulation coordination of various electrical equipment (transformers, reactors, generators, motors, PTs, CTs, circuit breakers, contactors, etc.) in the power system. The protection performance of the arrester determines the power system. The internal and external insulation indicators of electrical equipment (short-term power frequency withstand voltage, lightning impulse withstand voltage and operating impulse withstand voltage, etc.).

Metal oxide arresters are products in conventional arresters. After the full introduction of this technology in my country in the mid-1980s, through years of practice and digestion, the current product performance of various professional arrester factories is not far behind that of the United States, Japan, Western Europe and other countries, and products that truly meet all requirements can also meet IEC requirements. all the requirements of the standard.

The core working element of this product is fired with multi-element metal oxide powder mainly composed of zinc oxide, which has excellent nonlinear volt-ampere characteristics, fast response to steep waves, and large flow capacity. Products with gaps use self-blowing gaps and a pressure-equalizing irradiation structure, which reduces the dispersion of discharge and has a small impact coefficient.

The use of composite insulating jackets conforms to the development trend of miniaturization, safety and maintenance-free power products. Compared with traditional inorganic materials such as ceramics and glass, polymer organic composite materials have the advantages of small size, light weight, pollution resistance, no cleaning, explosion-proof and vibration-proof. It is a lightning protection component in the integrated and modularized medium and high voltage power transmission and transformation equipment.

Use and implementation standards:

This product is used in power generation, transmission, substation, and distribution systems of AC 220kV and below. It is used to limit the amplitude of lightning and overvoltage within the system to a specified level. It is the basic equipment for the insulation coordination of the entire system. At the same time, this product cannot be used to limit resonance overvoltage, and other methods are required for system resonance elimination.

The model of this product is compiled in accordance with the provisions of JB/T8459-1996 "Surge Arrester Product Model Compilation Method", and the non-gap product implements the GB11032-2000 "AC non-gap metal oxide arrester" standard; the gap product implements JB/T9672-2005 "A series connection". Gap Metal Oxide Arrester" standard. Important parameters and configuration methods that are not clearly defined in the above standards shall be revised and implemented according to the requirements of DL/T620-1997 "Overvoltage Protection and Insulation Coordination of AC Electrical Installations". Shanghai Yizhen Electric Power Equipment Co., Ltd. is a professional production base that has been engaged in the design, development, production and manufacture of high and low voltage electrical products for many years. The company has strong technical force, good working environment, production conditions, testing equipment and strict quality management system. The products have high technical content and stable performance. The company's leading products are 330kV and below arrester series, 330kV and below composite insulator series, 35kV and below three-phase combined overvoltage protector (three-phase combined lightning arrester) series, and current transformer secondary overvoltage Discharge counters for protectors and arresters, monitor series, harmonic eliminator series for neutral point of voltage transformers, hot-melt type for arresters, line overvoltage protectors; thermal explosion type disconnectors; drop-out arresters, drop-out fuses , isolating switch, vacuum circuit breaker, live display and other products. At the same time use various production testing equipment. The company's products meet national standards.

Zinc oxide arrester (HY5WS-17/50 arrester) is the current overvoltage protector. It uses zinc oxide resistor as the main component. Compared with the traditional silicon carbide arrester, it greatly improves the volt-ampere characteristics of the resistor and improves the The current capacity can be made into a gapless arrester. As a result, fundamental changes in the structural characteristics of electrical appliances have been brought about.

When the arrester is under normal operating voltage, the current flowing through the arrester is only microampere. When subjected to overvoltage, the excellent nonlinear characteristics of the arrester play a role. The current flowing through the arrester reaches thousands of amperes, and the arrester is in a conducting state. , release overvoltage energy, thereby preventing overvoltage from infringing on power transmission and transformation equipment.

Conditions of Use:

1. The ambient temperature is not higher than +40℃, not lower than -40℃

2. The altitude does not exceed 1000m-2000m

3. The maximum wind speed does not exceed 35m/s

4. Areas with a seismic cracking degree of 7 degrees and below

5. Power frequency 50Yz or 60Yz

6. The power frequency voltage applied to the arrester for a long time does not exceed the continuous operating voltage of the arrester. Abnormal use conditions, need to be explained when ordering and resolved through negotiation between the two parties

Features:

The company produces 0.22-110KV grade various types of zinc oxide arresters. In addition to the performance in line with the national standard GB11032, there are the following characteristics:

1. The actual DC reference voltage is more than 4% higher than the specified value of the national standard, which is beneficial to improve the stability of the arrester.

2. The energy tolerance capacity is large, for example, the 2mA square wave current capacity of the 10KV distribution type arrester can actually reach 150A; the 4/10μs high current impulse capacity can reach 65KA.

3. The leakage current is small, and the leakage current under 0.75 times DC 1mA voltage is usually not more than 20μA, and the aging resistance is good, and it is stable and reliable for long-term use.

4. The sealing structure is reliable, and the composite jacket adopts one-time integral molding.

5. The product has large creepage distance and good pollution resistance.

6. Can design and produce all kinds of products with special requirements according to user requirements.