34S 821K High Quality Zinc Oxide Varistor Lightning protection chip 580-660V

Introduction
 
       Metal Oxide Varistor (MOV) as one nonlinear resistance element is mainly made of zinc oxide (ZnO), which has very high surge capacity and big nonlinear coefficient. Below the threshold voltage, its resistance is very high, nearly no current flows through, but above the threshold voltage, the resistance reduces sharply, huge current can be discharged. Due to this characteristic, varistor as a protection component in electronic and electrical equipment can absorb abnormal over-voltage and lightning surge.
 
Features

• 34S metal oxide varistor (MOV), with epoxy resin
• Diameter and thickness is controlell effectively within the design scale.
• Peak current is reached the world leading level. It can afford 8/20us impulse, peak current Imax 40kA punch 2 times.
• Thermal stability. Soldering thermal cutoff member with 145 degree, the cutoff time is no less than 5 senconds under 1A current; the cutoff time is 3-5 seconds under 1.5A current.
• Energy absorption capacity, applied 2ms impulse, impulse current is 600A, the max. energy absorption capacity is more than 1000J.
• Life time. Applied 83% varistor voltage at 85 degree to accelerate aging. The lifetime characteristic curve is good, varistor voltage change rate is less than +/-10%
• Power frequency withstand. Applied 1.2 tims electric load rate, tested for 5 minutes, the varistor is good, the varistor voltage change rate is less than +/-10%.
• Stability. To exposure in the air for one week, varistor voltage and leakage current is less than |+/- 10%, product performance stable.

Technical Parameter

COMPANY OVERVIEW

Xian Xiwuer Electronic and Info. Co., Ltd is a wholly state-owned company with a registered capital of CNY 101.465 million (exchanged to USD15.85 million), owning total assets of CNY315 million (traded to USD 49.22 million). It was established in 1976. Currently, it has about 460 employees, with an annual sales income of CN280 million (exchanged to USD43.75 million). The company has four production and business bases covering an area of 43052 square meters, and a construction area of more than 50000 square meters. The company has 8 persons with master's degrees, more than 80 engineers with senior technical titles 12 technicians who have been awarded Experts with Outstanding Contributions by the Xian municipal government, and 1 expert who has been enjoying a special allowance from the State Council.

The main products include

l Smart Embedded Epoxy Pole；

l Integrated Instrument Transformer

l Capacitive Voltage Divider

l Rogowski Coil

l High Voltage Capacitor Rod；

l High Voltage Film Capacitor；

l High Voltage Resistor；

l Primary and Secondary Integrated Intelligent assembly and components with the function of

l voltage measurement, current measurement, protection, temperature monitoring, and power supply；

l Medium-High Voltage components/parts/ assembly；

l Surge Protective Device for Power Supply System；

l Chips for lightening devices；

l Zinc Oxide Varistor；Thermistor.

Major Customers: ABB, Schneider, GE, ZTE, XD Electric, XJ Electric, PingGao Electric and etc.

The company has the provincial Technical R&D Center. The company has developing and manufacturing experiences of the key products HV Ceramic Capacitor, SPD, Varistor, Thermistor and for nearly 20 years. There have been 32 patented technology, 4 invention patents, and 4 national key new products. The company is in the leading position in the same industry. The company has grown very fast with a unique management system which is the fundamental guarantee to the continuous development of the enterprise under the state-owned system. In Northwest China, the company is the first to implement ISO 9001 standards and the first to promote the use of ERP management systems, having achieved ISO9001, ISO14001, and ISO45001 approval, thus standardizing and improving the management level of the company.

Through continuous technological innovation, product R&D, and quality improvement the main technical performance and reliability of the products are at the internationally advanced level as the same level with Panasonic and Siemens. The products have got UL, VDE, TUV, CAS, CE, CQC, RoHS, and REACH Certification. The company has advanced production equipment among which the key production equipment and modern assembly lines are imported from Japan, the U.S.A, Germany, Korea, and Belgium including 26m large sintering tunnel furnaces8 automatic assembly lines, the largest energy impulse current generator and a series of special test equipment and environmental test equipment. In the same industry in China, the company has the largest production capacity, the highest degree of automation with the most complete testing methods. The company has two routine test laboratories with the most advanced lightning testing equipment and environmental testing equipment which comply with national standards for laboratory construction. They are the significant laboratories supported by Shaanxi Province with professional testing technicians undertaking part of the supervision and inspection of electronic products in Shaanxi Province at the same time.

We believe we are able to supply satisfied goods and services to customers at home and abroad with the most reasonable price and the shortest delivery time. on the bases of our excellent quality assurance capacity, technical development capacity, and rich manufacturing experiences.

CERTIFICATE