DC-Link Aluminum shell dry-type DC filtering capacitorDetailed product description：

The DC Link aluminum shell dry-type DC filter capacitor is made of low loss metalized polypropylene film. The self-healing film is an imported base film and a gradient square resistance safety film deposited using patented technology.

The film is wound into a cylindrical shape using fully automated equipment, utilizing non inductive winding technology. The core is connected using thin copper sheets, resulting in smaller inductance and stronger overcurrent and overvoltage capabilities for capacitor production.

Based on long-term use and experimental results, our capacitor dielectric has excellent self-healing properties.
We adopt the form of thickening the edge of the film to increase the contact area at the edge, thereby making the contact part between the film and the sprayed gold surface better, increasing the overcurrent capacity of the product, and reducing edge stress.  

solvent
The dielectric filled in the DC Link aluminum shell dry-type DC filter capacitor is to isolate the air between the electrodes. Without the protection of the filling dielectric, the metal coating will be oxidized, and the metalized film will be more and more self-healing. The capacity of the capacitor will become smaller and the loss will increase.
Therefore, when we pour polyurethane into the aluminum shell of the capacitor, we need to perform vacuum drying treatment on the capacitor to protect the wound core and its surrounding environment, making the capacitor's capacity very stable during long-term use.

The capacitor is filled with polyurethane, so it has a high volume utilization ratio, excellent self-healing characteristics, and automatic overvoltage protection. When unexpected situations occur during operation or the capacitor is overloaded, the capacitor will automatically disconnect to ensure safe operation.
Technology and performance characteristics

Features Features
Applied in DC filtering circuits, it can replace electrolytic capacitors
Low equivalent series resistance, capable of withstanding large ripple currents
Feeling small
Has self-healing properties
long lifespan
Aluminum shell, resin sealing

Application Scenarios
Transportation vehicles, such as electric and hybrid vehicles
Welding equipment, elevators, motor drives

Compliance with Standards	IEC 61071、   IEC61881
Operating temperatures (Case) Operating temperature (shell)	-40°C to +70 °C
Storing temperature for storytelling	-40 . .. +85°C
Θ HOTSPOT hotspot temperature	≤85°C
Capacity tolerance: capacitor tolerance	± 5% or ± 10%
Tan δ 0 loss	2 x10-3 (100Hz,20°C)
Test voltage between terminal to terminal UTT terminals	1.5 URMS for 10 seconds
Test voltage terminal to case UTC terminal and shell to test voltage	3kV - 50Hz for 60 seconds
Permissible relative humidity	75%Annual average ≤ 95% on 30 days / year, Annual average humidity of 75%, 30 days/year
IEC climate category	40 / 85 / 21
Capacity deviation in the operating temperature range of -25 ° C to+70 ° C allows for a change in capacity when operating at -25 ° C to+70 ° C	± 1.5% max on capacity value measured at+20 ° C maximum deviation ± 1.5% relative to the measured value at 20 ° C
Case components Shell components	Aluminium、plastic、304 stainless steel Aluminum shell, plastic shell, 304 stainless steel shell
Terminals terminals	Tinned brass fastens or screws, tinned copper screws
Installation Location	Whatever Position
Life Expectancy	≥ 100.000 hours at Un
Failure rate	50 FIT
Recommended torque for screw connections	Internal thread M6-3Nm, M8-6Nm