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Persona di contatto : Wang Hong

Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection

  • Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection
  • Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection
  • Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection
Luogo di origine XIAN, CINA
Marca XIWUER
Certificazione ISO9001,ISO14001,ISO45001
Numero di modello CT8-2-50KV-1000PF
Quantità di ordine minimo 1pcs
Prezzo Negoziabile
Imballaggi particolari Cartone
Tempi di consegna 5-7 giorni
Termini di pagamento L/c, t/t
Capacità di alimentazione 4.000.000 pc all'anno

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Low Dissipation HV Doorknob Capacitors

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High Withstanding Voltage Ceramic Doorknob Capacitors

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High Insulation Resistance High Voltage Doorknob Capacitors
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Descrizione di prodotto
High Voltage Doorknob Capacitors: The Core Role in Lightning Arresters
Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection 0
Technical Specifications


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

Power System Lightning Arresters (Surge Protection)
In power system lightning protection, surge protectors (SPDs) serve as the primary defense against lightning surges and switching overvoltages. High-voltage doorknob capacitors, featuring a unique ceramic dielectric and epoxy resin encapsulation structure, play a critical role in high-frequency filtering and energy buffering.
Technical Performance
When lightning electromagnetic pulses (LEMPs) or switching overvoltages (such as from switch trips) enter the system, doorknob capacitors rapidly absorb high-frequency surge energy to suppress voltage spikes. They work in conjunction with varistors (MOVs) or gas discharge tubes (GDTs) to achieve multi-stage discharge. The low-inductance design ensures nanosecond response times, effectively controlling residual voltage below equipment insulation withstand levels (e.g., ≤1.5kV), preventing damage to downstream precision equipment.
Applications in Renewable Energy
On the DC side of inverters in new energy installations (photovoltaic and wind power), DC SPDs must withstand high temperatures and humidity at 1500VDC. The low loss factor and high insulation resistance characteristics of doorknob capacitors significantly enhance SPD reliability in these demanding environments.
Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection 1
Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection 2
Low Dissipation High Voltage Doorknob Capacitors with High Withstanding Voltage and High Insulation Resistance for Surge Protection 3
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