0102030405
China Suppliers DC Filtering Capacitor with High Energy Density and 9000VDC Support - Factory Direct Quality
General information
- 1 Dielectric: Metallized film
- 2 Filling: epoxy resin
- 3 Flame retardant rating: UL94-V0
- 4 Fully sealed metal housing
- 5 Custom-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 develop 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 satisfactorily.
Guideline of DC filter capacitor bank installation
Installation Environment
- Outdoor
- Indoor
Connection
- Connected in single star
- Connected in double star
Protection of installation
- Open delta voltage protection
- Differential voltage protection
- Differential current bridge protection
- Unbalance current protection of neutral point
Frequently Asked Questions (FAQ)
What materials are used for the dielectric and filling of these capacitors?
The capacitors utilize metallized film as the dielectric and are filled with epoxy resin. They feature a fully sealed metal housing and have a flame retardant rating of UL94-V0.
What is the working temperature range and voltage capacity?
The working environment temperature ranges from -40℃ to 70 ℃, and the maximum rated voltage is up to 9KVDC.
What connection options are available for installing the DC filter capacitor bank?
The capacitor bank installation supports connection in either a single star configuration or a double star configuration, suitable for both indoor and outdoor environments.
How does the number of series segments affect the DC voltage distribution?
Based on our research, a higher number of series segments of the elements leads to greater non-uniformity in the DC voltage distribution across the capacitor shell connection elements.
What types of protection methods can be applied to the installation?
Installation protection options include open delta voltage protection, differential voltage protection, differential current bridge protection, and unbalance current protection of the neutral point.