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The core role of high-voltage door handle capacitors in coupling devices

  • The core role of high-voltage door handle capacitors in coupling devices
  • The core role of high-voltage door handle capacitors in coupling devices
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Productdetails
Verwijdering ¥0.0040 Het weerstaan van Voltage 1.5UR ● 1min
Isolatieweerstand ≧ 1.0 × 105mΩ
Markeren

high voltage doorknob capacitors for coupling

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door handle capacitors high voltage

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coupling devices high voltage capacitors
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Productomschrijving

The core role of high-voltage door handle capacitors in coupling devices

Drawing:
The core role of high-voltage door handle capacitors in coupling devices 0

Parameters:

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




High-voltage coupling devices are key components in power line carrier communications, signal acquisition, and energy extraction systems. Their core function is to safely and efficiently transfer high-frequency signals or energy from transmission lines to measurement/communication equipment while simultaneously blocking dangerous power-frequency high voltages. In this sophisticated system, high-voltage doorknob capacitors, with their excellent electrical insulation properties, stable capacitance characteristics, and high voltage resistance, serve as indispensable "frequency selectors" and "insulation barriers" in the coupling loop.

Core Challenges of Coupling Devices and Capacitor Solutions

An ideal coupling device must achieve precise signal coupling and reliable electrical isolation in high-voltage environments, which presents two core challenges:

The threat of high-frequency power voltages: Power-frequency voltages on power lines can reach tens to hundreds of kV and must be effectively blocked from sensitive communications or measurement equipment.

Efficient transmission of high-frequency signals: Carrier communications or pulse signals must be coupled to or extracted from the lines with extremely low loss, placing stringent demands on the frequency characteristics of the coupling components.

The Dual Role of Doorknob Capacitors: Isolation and Coupling

In high-voltage coupling devices, doorknob capacitors simultaneously play two key roles:

High-voltage isolator: Their high withstand voltage (e.g., 35-500 kV rating) enables them to be connected directly in series with high-voltage lines, withstanding power-frequency voltages and forming a robust electrical isolation barrier to protect downstream equipment and personnel.

High-frequency coupling path: For high-frequency carrier signals, capacitors present low impedance, creating an efficient energy and signal path. Their low loss ensures minimal signal attenuation during the coupling process.


 

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