China LOPS Low-Voltage Bus Overvoltage Protection - Leading Suppliers & Factory Solutions

The LOPS low-voltage bus overvoltage suppression device, designed for superior protection against overvoltage, is an essential component for electrical systems. This device is directly connected in parallel to the busbar and incorporates advanced technologies, including fast controllers, high-energy nonlinear resistors, overvoltage peak interceptors, and counterattack suppression mechanisms. Crafted with precision, the LOPS device employs scientifically calculated designs to enhance performance, By utilizing the remarkable volt-ampere characteristics, high thermal capacity, and rapid response speed of these technologies, LOPS effectively addresses the shortcomings of traditional surge protective devices (SPTs), providing comprehensive overvoltage protection for medium voltage main busbars. For optimal performance, setting the action value of LOPS at 1.2 times the system phase voltage is generally recommended, though customization is available for special cases, As a leading product among China suppliers, LOPS is manufactured in our advanced factory, ensuring top-notch quality and reliability. Choose the LOPS overvoltage suppression device to safeguard your electrical systems from potential voltage surges effectively

Product Detail

Functional Features

High energy nonlinear resistor chip matching technology

The nonlinear resistor adopts unique heat dissipation technology and fully sealed process, with excellent heat dissipation and moisture prevention effects, stable working performance, long service life, and safety and reliability.

Overvoltage peak cutting technology

When a transient overvoltage occurs in the system, when the peak value of the overvoltage exceeds 1.2 times the rated voltage peak value, the overvoltage peak interceptor immediately acts to cut off the high voltage wave head, ensuring the safe operation of various load equipment under the busbar.

Secondary pressure limiting technology

After the operation of the first level voltage limiting unit, if the bus voltage still exceeds the set allowable value, the LOPS equipment will put in an overvoltage chopper to quickly limit the bus voltage to 1.2 times or less.

Rapid response technology

The action delay is small, the first level has no delay response, and the second level responds within 2 milliseconds. Good steep wave response characteristics, short conduction time of nonlinear resistors, active protection, and good protection performance.

Overvoltage recording technology

The LOPS low-voltage bus overvoltage suppression equipment can automatically record parameters such as the number of actions, action time, and bus voltage during action, providing a basis for system technical analysis.

Products Specification

NO.	Spec		Arrestor	TBP	LOPS
1	Action voltage		2~3 times	2~3 times	1.25 times
2	Residual voltage		4~6 times	3 times	1.35 times
3	Withstand energy	6kV	75A/2ms;40kA/10μs;＜15kJ	400A/2ms;40kA/10μs;＜15kJ	1.5kA/2ms; 600kA/10μs; ≥1MJ
		10kV	75A/2ms;40kA/10μs;＜20kJ	400A/2ms;40kA/10μs;＜20kJ	2kA/2ms; 1MA/10μs; ≥ 2MJ
		35kV	400A/2ms;65kA/10μs;＜60kJ	400A/2ms;65kA/10μs;＜60kJ	10kA/2ms;2MA/10μs; ≥ 75MJ
4	Risk		Unknown status, explode	Unknown status, explode	Controllable operation status without explosion
5	Response time		≤50ns	≤50ns	≤50ns
6	Leakage current		≤1mA	≤1mA	≤1mA
7	Effectiveness		Lightning overvoltage switching overvoltage	switching overvoltage Resonance overvoltage	All overvoltage

Frequently Asked Questions

What is the main safety advantage of LOPS over traditional arrestors?

LOPS operates in a controllable status without the risk of explosion, whereas traditional arrestors and TBPs run under unknown statuses with potential risks of explosion during failure.

How does the secondary pressure limiting technology work?

If the bus voltage still exceeds the set allowable value after the first level voltage limiting unit operates, the LOPS equipment initiates an overvoltage chopper to quickly limit the bus voltage to 1.2 times or less.

What is the response speed of the LOPS equipment?

LOPS features rapid response technology with minimal action delay. The first level responds with zero delay, and the second level responds within 2 milliseconds, keeping the overall response time under 50 nanoseconds.

How does the withstand energy of LOPS compare to standard TBPs?

LOPS offers significantly higher withstand energy. For example, at 35kV, LOPS provides energy protection of ≥ 75MJ compared to less than 60kJ offered by standard Arrestors and TBPs.

What types of overvoltage can LOPS effectively suppress?

Unlike standard arrestors that only protect against lightning or switching overvoltages, LOPS is designed to provide comprehensive protection against all types of overvoltage.