LOPS Overvoltage Protection Device for MV Bus - China Suppliers and Factory Solutions

The LOPS low-voltage bus overvoltage suppression device is an innovative solution designed for optimal performance and protection of medium voltage main busbars. Manufactured in China, this device is directly connected in parallel to the bus, employing cutting-edge technologies such as fast controllers, high-energy nonlinear resistors, overvoltage peak interceptors, and counterattack suppression techniques. Carefully calculated and engineered, the LOPS leverages the superior volt-ampere characteristics, immense thermal capacity, and rapid response speed of its components to deliver unparalleled efficacy, As a leading product among suppliers in the industry, the LOPS device effectively addresses and resolves the common challenges associated with overvoltage, including the limitations of traditional surge protective devices (SPDs) and combined overvoltage protection systems. By setting the action value at 1.2 times the system phase voltage—customizable for specific requirements—users can expect excellent operational results. Trust in our factory to provide reliable and advanced overvoltage suppression solutions tailored to your needs

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	1kA/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 (FAQ)

What are the safety advantages of LOPS compared to traditional Arrestors and TBPs?

Unlike traditional Arrestors and TBPs which operate under unknown statuses and carry explosion risks, LOPS operates under a controllable status without explosion risks, ensuring high system safety and reliability.

How does the Overvoltage Peak Cutting Technology protect load equipment?

When transient overvoltage occurs and exceeds 1.2 times the rated voltage peak, the overvoltage peak interceptor acts immediately to cut off the high voltage wave head, safeguarding all load equipment connected under the busbar.

What is the response time and speed of LOPS equipment?

LOPS features rapid response technology with an overall response time of ≤50ns. The first-level response has no delay, and the second-level response operates within 2 milliseconds, providing active and timely protection.

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 restrict the bus voltage to 1.2 times or less.

Can LOPS record overvoltage events for later technical analysis?

Yes, LOPS features overvoltage recording technology that automatically logs key parameters during actions, including the number of actions, action time, and bus voltage, providing essential data for technical analysis.

What types of overvoltages is LOPS effective against?

While Arrestors protect against lightning and switching overvoltage, and TBPs handle switching and resonance overvoltage, LOPS provides comprehensive protection effective against all types of overvoltages.