3kv 10ka Power Station Mov Metal Oxide Varistor (D48*H20mm)
Power station mov metal oxide varistor
A varistor is an electronic component with an electrical resistance that varies with the applied voltage.[2] Also known as a voltage-dependent resistor (VDR), it has a nonlinear, non-ohmic current–voltage characteristic that is similar to that of a diode. In contrast to a diode however, it has the same characteristic for both directions of traversing current. Traditionally, varistors were indeed constructed by connecting two rectifiers, such as the copper-oxide or germanium-oxide rectifier in antiparallel configuration. At low voltage the varistor has a high electrical resistance which decreases as the voltage is raised. Modern varistors are primarily based on sintered ceramic metal-oxide materials which exhibit directional behavior only on a microscopic scale. This type is commonly known as the MOV metal oxide varistor.
Varistors are used as control or compensation elements in circuits either to provide optimal operating conditions or to protect against excessive transient voltages. When used as protection devices, they shunt the current created by the excessive voltage away from sensitive components when triggered.
The name varistor is a portmanteau of varying resistor. The term is only used for non-ohmic varying resistors. Variable resistors, such as the potentiometer and the rheostat, have ohmic characteristics.
MOVs are specified according to the voltage range that they can tolerate without damage. Other important parameters are the varistor's energy rating in joules, operating voltage, response time, maximum current, and breakdown (clamping) voltage. Energy rating is often defined using standardized transients such as 8/20 microseconds or 10/1000 microseconds, where 8 microseconds is the transient's front time and 20 microseconds is the time to half value.
Product Information:
Product name: Power station mov metal oxide varistor
Type: varistor D48*H20mm
Material: Zinc oxide
Applicantion for Arrester Classification SL (IEC Standard)
| Specification | Diameter | Thickness | D.C. reference voltage (U1mA) | Max. ratio of residual voltage (8/20us) | Current impulse withstand capability | Recommended rated voltage | Maximum energy absorption capacity |
| 4/10us | 2ms |
| mm | mm | kV | at 10kA | kA | A | kV | kJ/kVr |
| MOV48×20 | 48±0.5 | 20±0.5 | 4.0-4.8 | 1.76 | 110 | 600 | 3 | 4.9 |
| MOV48×30 | 48±0.5 | 30±0.5 | 6.2-7.0 | 1.76 | 110 | 600 | 4.5 | 4.9 |
| MOV52×20 | 52±0.5 | 20±0.5 | 4.0-4.8 | 1.74 | 120 | 800 | 3 | 6.3 |
| MOV52×30 | 52±0.5 | 30±0.5 | 6.2-7.0 | 1.74 | 120 | 800 | 4.5 | 6.3 |
Applicantion for Arrester Classification SM (IEC Standard)
| Specification | Diameter | Thickness | D.C. reference voltage (U1mA) | Max. ratio of residual voltage (8/20us) | Current impulse withstand capability | Recommended rated voltage | Maximum energy absorption capacity |
| 4/10us | 2ms |
| mm | mm | kV | at 10kA | kA | A | kV | kJ/kVr |
| MOV60×20 | 60±0.5 | 20±0.5 | 4.0-4.8 | 1.72 | 150 | 1000 | 3 | 7.9 |
| MOV60×30 | 60±0.5 | 30±0.5 | 6.2-7.0 | 1.72 | 150 | 1000 | 4.5 | 7.9 |
| MOV64×20 | 64±0.5 | 20±0.5 | 4.0-4.8 | 1.69 | 150 | 1100 | 3 | 8.5 |
| MOV64×30 | 64±0.5 | 30±0.5 | 6.2-7.0 | 1.69 | 150 | 1100 | 4.5 | 8.5 |
Applicantion for Arrester Classification SH (IEC Standard)
| Specification | Diameter | Thickness | D.C. reference voltage (U1mA) | Max. ratio of residual voltage (8/20us) | Current impulse withstand capability | Recommended rated voltage | Maximum energy absorption capacity |
| 4/10us | 2ms |
| mm | mm | kV | at 10kA | kA | A | kV | kJ/kVr |
| MOV71×20 | 71±0.5 | 20±0.5 | 4.0-4.8 | 1.66 | 150 | 1400 | 3 | 10.6 |
| MOV71×30 | 71±0.5 | 30±0.5 | 6.2-7.0 | 1.66 | 150 | 1400 | 4.5 | 10.6 |
| MOV115/42x20 | 115/42±0.5 | 20±0.5 | 4.0-4.8 | 1.62 | 100 | 2000 | 3 | 14.7 |
| MOV115/42×24 | 115/42±0.5 | 24±0.5 | 5.0-5.8 | 1.62 | 100 | 2000 | 3.8 | 14.7 |
| MOV115/424×30 | 115/42±0.5 | 30±0.5 | 6.2-7.0 | 1.62 | 100 | 2000 | 4.5 | 14.7 |
| MOV138/52x20 | 138/52±0.5 | 20±0.5 | 4.0-4.8 | 1.65 | 100 | 2500 | 3 | 17.5 |
| MOV138/52×24 | 138/52±0.5 | 24±0.5 | 5.0-5.8 | 1.65 | 100 | 2500 | 3.8 | 17.5 |
| MOV138/52×30 | 138/52±0.5 | 30±0.5 | 6.2-7.0 | 1.65 | 100 | 2500 | 4.5 | 17.5 |
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3kv 10ka Power Station Mov Metal Oxide Varistor (D48*H20mm) Images
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