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20kV-2000pF 30kV-1000pF 40kV-150pF High Voltage Doorknob Capacitor and Doorhandle Capacitor for Lightning Arresters

Categories High Voltage Doorknob Capacitors
Brand Name: XIWUER
Model Number: CT8-2-30KV-2700pF
Certification: ISO9001,ISO14001,ISO45001
Place of Origin: XIAN, CHINA
MOQ: 1pcs
Price: Negotiable
Payment Terms: L/C,T/T
Supply Ability: 4,000,000 pcs a year
Delivery Time: 5-7days
Packaging Details: Carton
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20kV-2000pF 30kV-1000pF 40kV-150pF High Voltage Doorknob Capacitor and Doorhandle Capacitor for Lightning Arresters

Selection Guide - How to Choose a Doorhandle Capacitor for Your Lightning Arrester

High Voltage Doorknob Capacitor product image

Technical Specifications


No.SpecificationDissipationWithstanding voltageInsulation resistanceDimension(mm)
120kV-2000pF








≦0.0040








1.5Ur 1min








≧1.0×105MΩ

DHLDM
220kV-10000pF451923125
320kV-18000pF651519125
430kV-1000pF801725125
530kV-2700pF452432124
630kV-12000pF602028124
740kV-150pF20334184
840kV-500pF28334184
940kV-7500pF802429126
1040kV-10000pF802226165
1150kV-1000pF503034124
1250kV-1000pF322731165
1350kV-5600pF803135165
1460kV-1500pF503134125
1560kV-3000pF653235165
16100kV-500pF505458125
17100kV-2000pF513235165
18Insulator type 100kV-1500pF683640165
19150kV-820pF6595100125
20200kV-600pF509094165


Selection Guide - How to Choose a Doorhandle Capacitor for Your Lightning Arrester
Improperly selected capacitors can become the weak link in the protection chain. In engineering practice, the following parameters should be evaluated:

Rated voltage: Should be 20% higher than the system's maximum continuous operating voltage (Uc). For example, a 480V system is recommended to use 520V or higher.

Capacitance Value and Pulse Withstand: Select a capacitance value based on the required discharge energy (typical range: 100pF–0.1µF) and ensure that the capacitor can withstand the nominal discharge current (e.g., 20kA/8/20µs) and multiple surges.

Low Equivalent Series Inductance (ESL): The ESL value should be ≤20nH to avoid pulse response delays.

Environmental Adaptability: For coastal areas, IP68 sealing rating is required. For high altitudes (>2000m), the Uc reduction rule of 1% for every 100m increase in altitude should be applied. For wind turbine converter cabinets, for example, epoxy-encapsulated doorhandle capacitors with screw terminals ≥4mm deep are recommended to ensure reliable connection in vibration environments.

High Voltage Doorknob Capacitor application diagram
High Voltage Doorknob Capacitor technical illustration
High Voltage Doorknob Capacitor installation example
China 20kV-2000pF 30kV-1000pF 40kV-150pF High Voltage Doorknob Capacitor and Doorhandle Capacitor for Lightning Arresters factory
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