LPM PD Series is a T2 level power DC surge protector designed for low to medium-voltage photovoltaic (PV) power generation systems.
Product Features
Wide-Range Application Scenarios
Suitable for installation in LPZ 0B-1 and subsequent lightning protection zones, used as lightning arrester for photovoltaic power generation systems.
Product Specification
Standards | IEC 61643-11 |
SPD type | T2 |
Models | LPM PV300 | LPM PV500 | LPM PV1000 | LPM PV1500 |
Electrical parameters |
Nominal operating voltage Un | 300Vdc | 500Vdc | 1000Vdc | 1500Vdc |
Maximum continuous operating voltage Uc | 400Vdc | 600Vdc | 1100Vdc | 1600Vdc |
Nominal discharge current (8/20μs)In | 20kA |
Maximum discharge current (8/20μs) Imax | 40kA |
Voltage protection level In@Up | ≤1.2kV | ≤1.8kV | ≤3.6kV | ≤4.5kV |
Response time tA | ≤25ns |
Protection Circuit | +/-,+/E,-/E |
Mechanical parameters
| Installation method | DIN Rail 35mm |
| Screw torque | 5N*m |
| Strip length | 12mm |
| Wiring cross-sectional area | 2.5mm²-32mm² |
| Product size | 90mmx54mmx68mm |
| Shell material and flame retardant grade | Mineral nylon PA6, V0 |
| Deterioration indication | Window green: OK; Window red: Fail |
| Remote signaling contact type | Normally closed and normally open switching contacts |
| Remote signaling contact switching ability | 125Vac/1A,125Vdc/0.2A |
| Maximum connection capacity of remote signaling | 2.5mm² |
| Installation position | Indoor |
| Degrees of protection provided by enclosure | IP20 |
| Temperature range | -40℃…+80℃ |
| Humidity range | Relative humidity ≤ 95% (max 40 ℃) |
Notices
● Select the appropriate model based on the PV system's DC voltage (75Vdc~900Vdc).
● Use wiring with cross-sectional area 2.5mm²-32mm² and tighten screws to 5N·m torque.
● Install the SPD in the DC side of the PV system, close to the protected equipment.
● Ensure reliable grounding with ground resistance ≤4Ω to guarantee surge diversion efficiency.
● Regularly check the status window—replace the module immediately if it turns red (failure status).
● The product is for indoor use; avoid outdoor exposure to moisture and direct sunlight.
FAQ
Q1: What is the difference between LPM PV series and LPM PD series?
A1: LPM PV series supports higher DC voltages (up to 1500Vdc) for large-scale PV systems, while LPM PD series is for low to medium-voltage (75Vdc~900Vdc) PV applications.
Q2: Can this SPD be used for 12Vdc or 24Vdc solar systems?
A2: Yes, the LPM PD100 model (75Vdc Un) is compatible with 12Vdc/24Vdc solar systems, providing overvoltage protection.
Q3: Does the product have a built-in arc extinguishing mechanism?
A3: Yes, it is equipped with a built-in rotary arc extinguishing baffle to prevent arc faults during surge protection.
Q4: What is the installation method for this product?
A4: It adopts 35mm standard DIN Rail mounting, compatible with most PV combiner boxes and electrical cabinets.
Q5: What is the service life of the LPM PD series?
A5: Under normal operating conditions, the service life is 5-8 years. It may vary based on surge frequency and environmental factors.
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