LOPS: China Factory Suppliers for MV Bus Overvoltage Protection with Advanced Suppression Technology
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)
Q: What is the advantage of LOPS nonlinear resistor chip matching technology?
A: It utilizes a unique heat dissipation technology and a fully sealed process. This ensures excellent heat dissipation, moisture prevention, stable working performance, long service life, and high safety and reliability.
Q: How does LOPS overvoltage peak cutting technology operate during an event?
A: When a transient overvoltage exceeds 1.2 times the rated voltage peak, the overvoltage peak interceptor immediately cuts off the high voltage wave head to ensure the safe operation of all load equipment under the busbar.
Q: What is the response speed of the LOPS equipment?
A: LOPS has a very small action delay. The first level features a zero-delay response, and the second level responds within 2 milliseconds, providing fast active protection and steep wave response.
Q: How does LOPS withstand energy compare to traditional Arrestors and TBPs?
A: LOPS offers significantly higher withstand energy. For example, at 10kV, LOPS withstands ≥ 2MJ compared to <20kJ for traditional Arrestors and TBPs, making it substantially more robust.
Q: Is there a risk of explosion with LOPS equipment?
A: No. While traditional Arrestors and TBPs carry the risk of explosion under unknown states, the LOPS equipment maintains a controllable operation status without the risk of explosion.
Q: What parameters does the LOPS overvoltage recording technology capture?
A: It automatically records critical parameters including the number of actions, action times, and bus voltage during action to provide a solid basis for system technical analysis.