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High-voltage doorknob capacitors are crucial for PLC coupling filters.

Place of Origin	XIAN, CHINA
Brand Name	XIWUER
Certification	ISO9001,ISO14001,ISO45001
Minimum Order Quantity	1pcs
Price	Negotiable
Packaging Details	Carton
Delivery Time	5-7days
Payment Terms	L/C,T/T
Supply Ability	4,000,000 pcs a year

Product Details

Dissipation

≦0.0040

Withstanding Voltage

1.5Ur● 1min

Insulation Resistance

≧1.0×105MΩ

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High-voltage doorknob capacitors for PLC

Doorknob capacitors with high voltage

PLC coupling filter capacitors

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Product Description

High-voltage doorknob capacitors are crucial for PLC coupling filters.
Drawing:

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

In power line carrier communication systems, the coordinated operation of coupling filters and coupling capacitors is crucial. As the core coupling element, the performance of high-voltage doorknob capacitors directly determines the transmission efficiency and signal quality of the entire communication system. Our products, through precise electrical parameter control and optimized structural design, provide a perfect solution for PLC systems.

Coupling filters must fulfill two major functions: impedance matching and frequency band selection. If the coupling capacitor's capacitance value varies or its temperature characteristics are poor, the filter will detune, resulting in increased signal reflection and transmission attenuation. Our high-voltage doorknob capacitors utilize Class I ceramic dielectric (N4700 series), ensuring a capacitance variation of less than ±0.5% over a wide temperature range, providing a stable capacitive reactance foundation for the coupling filter. Their tight capacitance tolerance (up to ±5%) ensures the accuracy of the filter's passband characteristics.

In practical applications, our high-voltage doorknob capacitors demonstrate significant advantages: low dissipation factor (tanδ ≤ 1×10⁻³) ensures signal transmission efficiency; high linearity prevents harmonic distortion; and excellent pulse withstand capability, enabling them to withstand lightning surges and switching overvoltages. These features make our products particularly suitable for demanding application scenarios such as smart grid distribution automation and new energy station power monitoring.

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High Voltage Ceramic Capacitor