JLRSP200 Integrated Overvoltage Protection Device-Jiangsu Laibao Electric Power Co., Ltd.

JLRSP200 Integrated Overvoltage Protection Device

Product Overview

Modern industrial power grids utilize a vast number of high-capacity power electronic devices. The non-linear characteristics of these devices, combined with the transient effects caused by the rapid switching of electronic components (such as thyristors), generate severe overvoltage conditions. To address this, our company developed the JLRSP Integrated Overvoltage Protector. It is specifically designed for applications involving rapid switching, welding operations, and high harmonic content, effectively suppressing various types of overvoltage—including spike pulses, switching surges, resonant overvoltage, power surges, and lightning strikes.

Applications

The JLRSP200 integrated overvoltage protector is primarily used in the following scenarios:

In environments with high harmonic content and significant voltage distortion, passive filtering devices—while widely used—often yield inconsistent results. Furthermore, the capacitance of the capacitors within these devices degrades over time, potentially triggering resonance due to unstable system parameter fluctuations; this can lead to consequences ranging from the burnout of filter circuits to the destruction of the entire transformer-rectifier system.

In applications involving welding loads (such as at ports, shipyards, and automotive plants), DC welding equipment typically utilizes rectifiers. During commutation, thyristors generate voltage spikes; in 400V systems, these commutation-induced voltage spikes can peak at over 3,000V. Such spikes pose a severe threat to system insulation and equipment, often resulting in thyristor breakdown, burnout of electrical components, interference with precision instrument measurements, and phase-to-ground or phase-to-phase short circuits.