High Voltage DC Filtering Capacitors from China Suppliers - Metalized Self-Healing Film, 9000VDC, Durable Factory Quality
General Information
- 1Dielectric: Metallized film
- 2Filling: epoxy resin
- 3Flame retardant rating: UL94-V0
- 4Fully sealed metal housing
- 5Custom-made upon request
Technical Specifications
| Working environment | -40℃~70 ℃ |
| Rated capacitance | 500mF~20000mF +-5% |
| Rated voltage | Max 9KVDC |
| Dissipation factor tan | ≦0.001 |
| ESL | ≦30nH |
| Rs | ≦0.2mΩ |
| Max surge current | ≦770kA |
| Peak current | ≦50kA |
| Pole-to-case partial discharge test | ≦10pC |
| Withstand voltage between electrodes | 1.5Un DC, 60s |
Our Technical Specialties
High voltage and high current working environment will accelerate the aging of capacitors that cause capacitor failure easily. We started to commit to the research and development on DC filter capacitor for HVDC from 2017 to respond to the national double carbon call. We studied on DC voltage distribution, the relationship among the number of series segments, leakage ratio and DC voltage non-uniform coefficient of capacitor shell connection elements is studied, and the conclusion that the more the number of series segments of the elements, the more the non-uniform of the DC voltage distribution.
We gradually master the key technology of how to make the large-capacity DC capacitor bank operating satisfactory.
Guideline of DC Filter Capacitor Bank Installation
Q What materials are used for the dielectric and filling of these DC filter capacitors?
The capacitors are constructed with a metallized film dielectric and filled with epoxy resin that features a UL94-V0 flame retardant rating, housed in a fully sealed metal casing.
Q What is the operating temperature range and rated voltage for these capacitors?
The working environment temperature ranges from -40℃ to 70℃, and the rated voltage can reach a maximum of 9KVDC.
Q What connection methods are recommended for installing the DC filter capacitor bank?
The capacitor bank can be connected either in a single star configuration or in a double star configuration, suitable for both indoor and outdoor environments.
Q How does the number of series segments affect the DC voltage distribution?
According to research on DC voltage distribution, an increase in the number of series segments of the elements leads to greater non-uniformity in the DC voltage distribution.
Q What protection options are available for the capacitor bank installation?
The installation supports multiple protection schemes, including open delta voltage protection, differential voltage protection, differential current bridge protection, and unbalance current protection of the neutral point.