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Product name: SPD special backup protector device
Product number:
2019-09-26 Product time: 2019-09-26
SPD dedicated backup protector device
According to the relevant standards (GB18802.1 and GB50057), the front end of the SPD circuit must be connected in series with overcurrent protection appliances (such as fuses and circuit breakers). When the SPD fails or is short-circuited, the fuses and circuit breakers cannot coordinate with the SPD, resulting in fire and lightning damage to the equipment.

product description

SPD dedicated backup protector device

Features:

防雷 保护有效; 1. Large lightning impulse current (25kA 10 / 350μs, 100kA 8 / 20μs) does not break-to ensure that SPD lightning protection is effective;

2. SPD fault power frequency freewheeling breaking value is lower than 3A ± 1A-to ensure the safety of the power grid and power consumption;

防雷 保护可靠性。 3. Low lightning shock residual voltage-increase the reliability of lightning protection of equipment .

The direct effect of the use of this product with SPD is that the SPD backup protector does not break under the impact of large lightning. After the SPD fails, the small power frequency current flows quickly and breaks to ensure the safety of the power grid and electricity.

SPD dedicated backup protector device

product description:

According to the relevant standards (GB18802.1 and GB50057), the SPD circuit front end must be connected in series with overcurrent protection appliances (such as fuses and circuit breakers). When the SPD fails or is short-circuited, the fuses and circuit breakers cannot coordinate with the SPD, resulting in fire and lightning damage to the equipment. The fuses and circuit breakers currently used with a large number of SPDs are incompatible in three ways:

防雷 保护失效; 1. Misinterruption and easy damage when lightning strikes— lightning protection fails;

2. Power frequency freewheeling does not break when SPD short circuit occurs-the rated breaking current of fuses and circuit breakers, if SPD fails or short circuit, if the rated breaking current of fuses and circuit breakers cannot be provided 8 to 10 times Instantaneous current (for example, C32 circuit breaker needs to provide 320A instantaneous current), SPD may cause a fire accident;

防雷 保护可靠性降低。 3. High lightning impulse current residual voltage-the reliability of equipment lightning protection is reduced.

Use environment:

1. Working temperature: -250C to + 700C; 2. Storage temperature: -400C to + 850C;

3. Relative humidity: not more than 95%; 4. Indoor operation, or in a place without rain and snow.

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