Description
DC-link film capacitors can effectively suppress voltage fluctuations and filter high-frequency noise in the DC support filter circuit of wind power generation, solar power generation and other industrial frequency converters, thereby improving the efficiency of power conversion.
Features
- DC-link film capacitors can be used in DC filter circuits to replace traditional electrolytic capacitors and provide more stable and efficient filtering effects.
- It has a small equivalent series resistance, can withstand large ripple current, reduce energy loss and improve system efficiency.
- The DC-link capacitor has low self-inductance, suitable for high-frequency applications, ensuring fast response and stable operation.
- It has self-healing properties, which can repair minor damage caused by overvoltage or other abnormal conditions to a certain extent and extend service life.
- The aluminum shell design and resin potting process of the capacitor provide good mechanical strength and resistance to environmental interference.
Specification
| Model | DC-LINK-50UF | DC-LINK-60UF | DC-LINK-80UF | DC-LINK-100UF | DC-LINK-200UF | DC-LINK-420UF |
| Capacitance | 50μF | 60μF | 80μF | 100μF | 200μF | 420μF |
| Rated voltage | 2000V | 1100V | ||||
| Size (mm) | 86*130 | 86*130 | 86*150 | 86*175 | 116*180 | 86*135 |
| Equivalent resistance (RS) | 4.8 | 4.2 | 4.4 | 3.5 | 2.9 | 2.3 |
| Maximum current (Imax) | 55 | 55 | 48 | 65 | 70 | 65 |
| Chargeable and dischargeable current (I (KA)) | 2.03 | 2.13 | 3.2 | 3.63 | 7.3 | 2.08 |
| Energy (WN (WS)) | 90 | 110 | 150 | 190 | 390 | 250 |
| Inductance (Ls (nH)) | 65 | 65 | 65 | 60 | 55 | 55 |
| Standards | IEC 61071, IEC 61881 | |||||
| Operating temperature (case) | -40℃ to +70℃ | |||||
| Storage temperature | -40℃ to +85℃ | |||||
| Hot spot temperature | ≤85℃ | |||||
| Capacitor tolerance | ±5% or ±10% | |||||
| Dissipation | 2×10-3 (100Hz, 20℃) | |||||
| Permissible relative humidity | Annual average humidity 75%, 30 days/year | |||||
| Permissible capacitance change | Maximum deviation ±1.5% relative to 20℃ measurement value (when operating at -25℃ to +70℃) | |||||
| Case composition | Aluminum housing, plastic housing, 304 stainless steel housing | |||||
| Terminals | Tinned copper screw | |||||
| Mounting position | Any position | |||||
| Expected life | ≥100.000 hours at Un | |||||
| Failure rate | 50 FIT | |||||
| Recommended connection torque | Internal thread M6-3Nm, M8-6Nm |
Applications
Tips: What is a DC-link capacitor?
DC-link capacitors are capacitors used in direct current (DC) circuits, mainly used in DC support filter circuits in power electronic equipment. Its main function is to stabilize the DC voltage in the circuit, reduce voltage fluctuations and high-frequency noise, and smooth the current waveform to ensure the stability and efficiency of the system. DC-link capacitors play an important role in renewable energy systems (such as wind and solar power generation) as well as industrial inverters, power converters and other applications.
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