Zinc oxide varistor MOV Blocks for surge arresters D60 D30 D32 customized dimension
Features
- The zinc oxide varistor is installed in the arrester and has excellent nonlinear volt-ampere characteristics.
- Under normal operating voltage, it exhibits a large resistance, and its leakage current is only in the microampere range.
- When there is an overvoltage, the low resistance is immediately converted, the energy is released, the overvoltage range is limited, and the large resistance is restored immediately after the overvoltage disappears, to ensure the safe operation of the power system.
Application
zinc oxide varistors are widely used in chemical, electronic, electrical, instrumentation, and mechanical industries, as they can withstand high temperatures, humidity, and corrosive environmental impacts.
Zinc oxide varistors can also be used in inductors, temperature sensors, and microwave circuits.
In addition to the above-mentioned applications, zinc oxide resistors can also be used for functions such as current limiting, voltage divider, and resistance regulation in electronic devices. For example, in DC power supplies, zinc oxide resistors can be used to limit the magnitude of the current and protect the circuit and equipment from excessive current damage. In a voltage-dividing circuit, it can be used to reduce the magnitude of the voltage to meet specific circuit needs. In addition, by changing the resistance value of the resistor sheet, the stability of the circuit can also be adjusted.
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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