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Description
Product description
The two-in-one lightning protection device for Railroad Rail Networks is designed with reference to the national standard GB/T18802.21-2004/IEC61643-21:2000. The two-in-one lightning protection device for rail power supply network (SPD) is mainly used for monitoring systems of various digital networks The omni-directional surge protection of the camera power supply and network signal system is an integrated multifunctional surge protector; it has the characteristics of large current capacity, low limit voltage, fast response speed, and convenient installation, which can fully protect the latest technology of network monitoring equipment.
Features
○ Easy flow, high-speed response, low loss;
○ Two-in-one network design concept, suitable for digital network high-definition cameras, protecting network + power;
○ Three-level surge protection, low residual voltage, fast response time and long service life;
○ Integration, small size, simple wiring, convenient installation, and reduced space occupation.
Technical Parameters
| name | Rail network two-in-one lightning protection device | |||||
| SPD category | Compound SPD | |||||
| SPD Features | With pressure limiting and current limiting functions | |||||
| model | LFD-NP02S | |||||
| Types of | power supply | The internet | power supply | The internet | power supply | The internet |
| Nominal working voltage Un | 12V | 5V | 24V | 5V | 220V | 5V |
| Maximum continuous operating voltage Uc | 18V | 8V | 30V | 8V | 385V | 8V |
| Nominal discharge current (8/20μS) In | 5kA | |||||
| Maximum discharge current (8/20μS) Imax | 10kA | |||||
| Voltage protection level (In) Up | ≤48V | ≤20V | ≤75V | ≤20V | ≤900V | ≤20V |
| (8/20μS) | x-x(1.2/50μs) | (8/20μS) | x-x(1.2/50μs) | (8/20μS) | x-x(1.2/50μs) | |
| Response time Ta | ≤25ns | ≤1ns | ≤25ns | ≤1ns | ≤25ns | ≤1ns |
| Transmission rate Vs | - | 100M bps | - | 100M bps | - | 100M bps |
| Insertion loss Ae | - | ≤0.3db | - | ≤0.3db | - | ≤0.3db |
| Interface Type | Terminals | RJ45/1236 | Terminals | RJ45/1236 | Terminals | RJ45/1236 |
| Installation wiring specifications | 1-1.5mm2 | -- | 1-1.5mm2 | -- | 1-1.5mm2 | -- |
| Failure indication | Green: normal, off: invalid | -- | Green: normal, off: invalid | -- | Green: normal, off: invalid | -- |
| Overload failure mode | The voltage limiting part of SPD has an internal open circuit on the network side, and the line does not operate, but the device is still protected by open circuit | |||||
| temperature range | -40℃…+85℃ | |||||
| Dimensions | 90mmx67mmx35mm | |||||
| Shell material | Flame retardant plastic | |||||
| Shell protection level | IP20 | |||||
| standard test | GB/T 18802.21 | |||||
Installation diagram
0755-21042597