LND series surge protector for power distribution system

I. Overview

With the rapid development of information networks, the number and scale of electronic devices within the system are constantly expanding, the integration level of electronic devices is increasing, and the overvoltage resistance of electronic devices is correspondingly decreasing. Once electronic devices are attacked by surge overvoltage (caused by lightning or switch operation), the probability of damage also greatly increases. Modular surge protectors for low-voltage systems are the preferred product for preventing such destructive accidents.

2、 Purpose and execution standards

The LND series surge protector is suitable for AC 220/380V low-voltage TT, IT, TN-S, TN-C-S and other distribution systems. It is used to limit the impact of surge overvoltage on the power supply system and prevent electromagnetic pulses generated by lightning strikes from impacting electrical equipment through the distribution system.

The performance requirements of this product shall be implemented in accordance with the GB18802-2002 "Surge Protective Devices (SPDs) for Low Voltage Distribution Systems" standard. For some parameters not explicitly specified in this standard, reference shall be made to the foreign IEC61643-1, UL1449, and IEEE62.41 standards for correction. In addition, GB50057 "Code for Design of Lightning Protection of Buildings" does not provide detailed regulations on the production parameters of SPDs, and cannot be used as a standard document to guide the specific production of SPDs. It is only used as a reference specification.

3、 Usage conditions

·Altitude: below 2000m;

·Environmental temperature: -40 ℃~+80 ℃;

·Environmental humidity: not higher than 90%;

·Seismic intensity: 7 degrees or below;

·Environmental medium: Non corrosive and explosive gases and dust.

4、 Model Definition

5、 Typical Technical Parameters Table of Conventional Products

LND-B series surge protector

LND-C series surge protector

LND-D series surge protector