No. | Specification | Dissipation | Withstanding voltage | Insulation resistance | Dimension(mm) | ||||
1 | 20kV-2000pF | ≦0.0040 | 1.5Ur● 1min | ≧1.0×105MΩ | D | H | L | D | M |
2 | 20kV-10000pF | 45 | 19 | 23 | 12 | 5 | |||
3 | 20kV-18000pF | 65 | 15 | 19 | 12 | 5 | |||
4 | 30kV-1000pF | 80 | 17 | 25 | 12 | 5 | |||
5 | 30kV-2700pF | 45 | 24 | 32 | 12 | 4 | |||
6 | 30kV-12000pF | 60 | 20 | 28 | 12 | 4 | |||
7 | 40kV-150pF | 20 | 33 | 41 | 8 | 4 | |||
8 | 40kV-500pF | 28 | 33 | 41 | 8 | 4 | |||
9 | 40kV-7500pF | 80 | 24 | 29 | 12 | 6 | |||
10 | 40kV-10000pF | 80 | 22 | 26 | 16 | 5 | |||
11 | 50kV-1000pF | 50 | 30 | 34 | 12 | 4 | |||
12 | 50kV-1000pF | 32 | 27 | 31 | 16 | 5 | |||
13 | 50kV-5600pF | 80 | 31 | 35 | 16 | 5 | |||
14 | 60kV-1500pF | 50 | 31 | 34 | 12 | 5 | |||
15 | 60kV-3000pF | 65 | 32 | 35 | 16 | 5 | |||
16 | 100kV-500pF | 50 | 54 | 58 | 12 | 5 | |||
17 | 100kV-2000pF | 51 | 32 | 35 | 16 | 5 | |||
18 | Insulator type 100kV-1500pF | 68 | 36 | 40 | 16 | 5 | |||
19 | 150kV-820pF | 65 | 95 | 100 | 12 | 5 | |||
20 | 200kV-600pF | 50 | 90 | 94 | 16 | 5 |
Future Trends - Lightning Protection Systems Integrating Self-Resilience and IoT
SPDs will move towards self-recovery and digitalization in the future. Door handle capacitors made of silicon carbide (SiC) automatically restore their dielectric properties after repeated surges, achieving a lifespan three times that of traditional MOVs. Furthermore, IoT-enabled SPDs with built-in capacitors can predict remaining life and locate faults through a cloud platform. For example:
Real-time monitoring of capacitance drift and ESL increase trends provides early warning of performance degradation.
Recording surge frequency and peak energy during lightning strikes allows for optimized protection strategies. Dekai Technology has already deployed this type of solution in wind power and data center scenarios, transforming SPDs from "replaceable components" to "manageable assets," building a full-lifecycle overvoltage protection system.