surge arresters MOV metal oxide varistor for semiconductor D30×30 Metal oxide varistor
MOV Blocks is a ceramic semiconductor element made of zinc oxide as the main material, its resistance value changes with the change of applied voltage, is the core component of metal oxide arrester, and its quality directly determines the performance of arrester. Our company's metal oxide varistors have the characteristics of strong galvanizing ability, high protection performance, good nonlinear characteristics, exquisite appearance and diverse specifications. The common voltage gradient range is 200~230V/mm. Its diameter and height can be flexibly determined according to customer requirements. The maximum diameter of the varistor is 138 mm, and the maximum height is 41 mm.
Features
- Excellent non-linear characteristics
- Compliance with IEC /IEEE (ANSI) standard
- High discharge current capability
- High energy absorb capability
Application
- Metal oxide varistor is currently the most common voltage clamping device and can be used for a variety of voltages and currents.
- Metal oxide varistors are very effective at absorbing short-term voltage transients and have higher energy handling capabilities.
- Like ordinary varistors, metal oxide varistors start conducting at a certain voltage and stop conducting when the voltage drops below a threshold voltage.
Technical Datasheet -----MOV Blocks for Lightning Arrester Classification DM (5KA)
| Specification | Diameter | Thickness | D.C. reference | Residual
voltage (8/20μs) | Current impulse
withstand capability | Rated voltage | Maximum
energy
absorption
capacity |
| 4/10μs | 2ms |
| mm | mm | kV | kA | A | kV | kJ/kVr |
| MOV30×3 | 30±0.5 | 3.0±0.5 | 0.6 ~ 0.8 | 1.1 ~ 1.5 | 40 | 150 | 0.28 | 0.8 |
| MOV30×6 | 30±0.5 | 6.0±0.5 | 1.2 ~ 1.6 | 2.2 ~ 2.9 | 40 | 150 | 0.5 | 0.8 |
| MOV30×20 | 30±0.5 | 20±0.5 | 4.0 ~ 4.8 | 7.3 ~ 8.7 | 65 | 150 | 3 | 1.2 |
| MOV30×30 | 30±0.5 | 30±0.5 | 6.2 ~ 7.0 | 10.9 ~ 12.7 | 65 | 150 | 4.5 | 1.2 |
| MOV32×20 | 32±0.5 | 20±0.5 | 4.0 ~ 4.8 | 7.0 ~ 8.4 | 65 | 200 | 3 | 1.6 |
| MOV32×30 | 32±0.5 | 30±0.5 | 6.2 ~ 7.0 | 10.9 ~ 12.3 | 65 | 200 | 4.5 | 1.6 |
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
• Smart Embedded Epoxy Pole；
• Integrated Instrument Transformer
• Capacitive Voltage Divider；
• High Voltage Capacitor Rod；
• High Voltage Film Capacitor；
• High Voltage Resistor；
• Primary and Secondary Integrated Intelligent assembly and components with the function of voltage measurement, current measurement, protection, temperature monitoring, and power supply；
• Medium-High Voltage components/parts/ assembly；
• Surge Protective Device for Power Supply System；
• Chips for lightening devices；
• 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
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