ABB MWD-08 Surge arrester MWD series oxide arrester in stock

Here is the product introduction of ABB MWD-08 Surge Arrester in the MWD series, along with a list of some models:

ABB MWD-08 Surge Arrester Product Introduction

• General Description: The ABB MWD - 08 is a high - performance surge arrester in the MWD series. It is a silicone - rubber - insulated, gap - less metal - oxide surge arrester, designed to provide reliable protection for electrical equipment in AC power systems against over - voltage surges.

• Technical Characteristics

• Rated Voltage: 8 kV, which is suitable for AC systems with a nominal voltage of 6 kV.

• Continuous Operating Voltage: It can continuously operate at a voltage of up to 6.5 kV, ensuring stable performance during normal operation.

• Nominal Discharge Current: The nominal discharge current is 10 kA, enabling it to effectively handle large - amplitude over - voltage surges caused by lightning or switching operations.

• Residual Voltage: When discharging, it can limit the residual voltage to a relatively low level to protect the connected electrical equipment. For example, the residual voltage at 8 / 20 μs wave shape may be around 25 kV.

• Excellent Non - linear Characteristics: Utilizing metal - oxide (MO) resistors as the core component, it exhibits excellent non - linear volt - ampere characteristics. Under normal voltage, the resistance is very high, and the leakage current is only in the micro - ampere range. When an over - voltage occurs, the resistance decreases rapidly, allowing a large current to pass through and discharge the over - voltage energy.

• Environmental Adaptability

• Temperature Range: It can operate normally in the ambient temperature range from - 60℃ to + 40℃, adapting to various harsh natural environments.

• Other Environmental Factors: It has good resistance to humidity, pollution, and mechanical vibrations, ensuring reliable operation in different field conditions.

• Applications: The MWD - 08 surge arrester is mainly used in 6 kV AC power systems to protect equipment such as transformers, switchgear, cables, and motors from over - voltages caused by lightning strikes, switching operations, and other factors. It is suitable for both indoor and outdoor installations, playing an important role in ensuring the safety and stability of power distribution systems.

List of Some Models in the MWD Series

• MWD-03: Rated voltage is 3 kV, suitable for lower - voltage AC systems. It has a continuous operating voltage of 2.4 kV and a nominal discharge current of 10 kA.

• MWD-04: With a rated voltage of 4 kV, it is often used in some low - voltage distribution systems. The continuous operating voltage is 3.2 kV, and it also has a nominal discharge current of 10 kA.

• MWD-06: The rated voltage is 6 kV, which is applicable to certain medium - voltage applications. It can continuously operate at 4.8 kV, and the nominal discharge current is 10 kA.

• MWD-15: Rated voltage is 15 kV, suitable for 10 kV AC systems. The continuous operating voltage is 12 kV, and the nominal discharge current is 10 kA.

• MWD-27: Has a rated voltage of 27 kV, which is suitable for higher - voltage medium - voltage systems. It has a continuous operating voltage of 21.6 kV and a nominal discharge current of 10 kA.