LPM 25B-385/4/LPM 50B-385/4 is a T1+T2 level power surge protector. It integrates primary (T1) and secondary (T2) protection, providing comprehensive shielding against direct and indirect lightning strikes.

Applications

Suitable for installation in LPZ 0A-B and subsequent lightning protection zones, used as a lightning arrester for three- phase power supply systems.

Product Specification

mechanical parameters

Installation Tips

1.Install the lightning protection box in a dry, well-ventilated indoor environment, away from flammable materials.

2.Use wires with cross-sectional area 2.5mm²~10mm², and tighten the screws to 5N·m torque.

3.Ensure reliable grounding with ground resistance ≤4Ω to ensure optimal surge diversion effect.

4.Regularly check the lightning strike counter and LED status indicator; replace the product immediately if it fails.

5.Do not disassemble the product without authorization to avoid damage to internal components.

FAQ

Q1: What is Kevin Connection and when should it be used?

A1: Kevin Connection is a wiring method that minimizes current measurement errors. It is recommended for large current applications (≥25kA) to ensure accurate protection triggering.

Q2: Can it be used in 400V three-phase systems?

A2: Yes, with maximum continuous operating voltage 385Vac, it is compatible with 400V three-phase systems (230V phase-neutral).

Q3: What is the difference between T1 and T2 level protection?

A3: T1 level handles direct lightning strikes (10/350μs waveform), while T2 level protects against indirect surges (8/20μs waveform). This product integrates both for comprehensive protection.

Q4: What is the flame-retardant grade of the housing?

A4: The housing is made of mineral nylon PA6 with V0 flame-retardant grade, which self-extinguishes within 10 seconds after ignition.

Q5: What is the response time of the product?

A5: The response time is ≤100ns, ensuring rapid diversion of surge current to protect sensitive equipment.