Lightning Protection T1 T2 SPD 3 Phase Home Surge Protector 220V 25kA 40kA 80kA
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.
| Product features |
| • Integrated module design:Integrated module design enables hot-swappable replacement, accurate surge protection, and cost-effective maintenance. |
| • Support Kevin Connection:Featuring an integrated module design, ensuring accurate current measurement and optimal protection performance. |
| • Equipped with reliable ignition circuit:The built-in reliable ignition circuit enables rapid response to surges, with lightning discharge current up to 50kA (LPM 50B) and voltage protection level ≤1.5kV. |
Applications
Product Specification
| Standards | IEC 61643.11 |
| SPD type | T1,T2 |
| Models | LPM 25B-385/4；LPM 50B-385/4 |
| Nominal operating voltage Un | 220Vac(50Hz) |
| Maximum continuous operating voltage Uc | 385Vac(50Hz) |
| Nominal discharge current (8/20μs)In | 25kA/50kA |
| Lightning discharge current (10/350μs) Iimp | 25kA/50kA |
| Voltage protection level Up | ≤1.5kV |
|
Response time tA
|
≤100ns |
| Protection Circuit | L1,L2,L3,N-E |
mechanical parameters
| Installation method | DIN Rail 35mm |
| Screw torque | 5N*m |
| Strip length | 12mm |
| Wiring cross-sectional area | 2.5mm2-32mm2 |
| Product size | 90mmx144mmx68mm |
| Shell material and flame retardant grade | Mineral nylon PA6, V0 |
| Installation position | Indoor |
| Degrees of protection provided by enclosure | IP20 |
| Temperature range | -40℃…+80℃ |
| Humidity range | Relative humidity ≤ 95% (max 40 ℃) |
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.
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