ZnO varistor D52 H20 MOV blocks for surge protection ZOV electrical
part high voltage metal oxide varistor
Zinc oxide varistor is a polycrystalline semiconductor material
modified with zinc oxide as the main body and doped with various
metal oxides. Due to its superior protection performance, large
current capacity, and no freewheeling, it is widely used in
internal and external overvoltage protection of power and
electronic systems. Lightning arresters are the main product form
used in power systems. When the voltage gradient of the zinc oxide
varistor sheet is high, the current capacity is large, the residual
voltage ratio is low, and the aging performance is excellent, it
can not only reduce the volume and quality of the arrester itself,
reduce the insulation level and cost of the protected equipment but
also provide energy for power equipment. Provide safer and more
reliable protection.
Features
- The aging performance is excellent, it can not only reduce the
volume and quality of the arrester itself, but also reduce the
insulation level and cost of the protected equipment
- It also provides energy for power equipment.
- Provide safer and more reliable protection.
Application
- Voltage division, filtering, and attenuation in signal processing
circuits: Zinc oxide varistor ceramics can also be used in signal
processing circuits for functions such as voltage division,
filtering, and attenuation.
- Current detection and voltage measurement in sensor circuits: Zinc
oxide varistor ceramics are used in sensor circuits for functions
such as current detection and voltage measurement.
Technical Datasheet -----MOV Blocks for Lightning
Arrester Classification 2 (10KA)
Specification | Diameter | Thickness | D.C. reference voltage (U1mA) | Residual voltage (8/20μs) at 10kA | Current impulse withstand capability | Rated voltage | Maximum energy absorption capacity |
| 4/10μs | 2ms |
| mm | mm | kV | kA | A | kV | kJ/kVr |
| MOV46×20 | 48±0.5 | 20±0.5 | 4.0 ~ 4.8 | 7.0 ~ 8.4 | 100 | 600 | 3 | 4.9 |
| MOV46×30 | 48±0.5 | 30±0.5 | 6.2 ~ 7.0 | 10.9 ~ 12.3 | 100 | 600 | 4.5 | 4.9 |
| MOV52×20 | 52±0.5 | 20±0.5 | 4.0 ~ 4.8 | 7.0 ~ 8.4 | 100 | 800 | 3 | 6.3 |
| MOV52×30 | 52±0.5 | 30±0.5 | 6.2 ~ 7.0 | 10.8 ~ 12.2 | 100 | 800 | 4.5 | 6.3 |
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
