I. Overview
The DC smoothing reactor is used on the DC side of converters, where the current flowing through the reactor is DC with an AC component. Its function is to limit the AC component superimposed on the DC current within a specified value. It is also used for coupling on the DC side of parallel inverters to limit circulating current in the loop, for restricting the current rise rate during DC fast switch fault interruption, and for smoothing DC in the intermediate circuits of current-source and voltage-source inverters. Additionally, it can be applied in rectifier power supplies for ripple suppression.
Product Features:
The DC smoothing reactor is mainly used in circuits to improve power quality and increase power factor. The reactors produced by our factory are made of cold-rolled silicon steel sheets with precision processing, consisting mainly of a core and winding. The core generally adopts a double-column structure, formed by stacking multiple silicon steel laminations separated by insulating plates to prevent magnetic saturation. The yoke is a square yoke, and after assembly, it is compressed tightly by tension bolts to reduce noise. This product is dry-type, self-cooled, with two insulation classes: Class B and Class F. It features compact size, low temperature rise, and low noise.
II. Model Designation
III. Technical Performance Parameters
1、Rated Operating Voltage: DC 500V – DC 1000V
2、Dielectric Strength: Core to winding withstands 3000VAC / 50Hz / 10mA / 10s without flashover or breakdown
3、Insulation Resistance: Core to winding ≥100MΩ at 1000VDC
4、Noise Level: Less than 60dB (measured 1 meter horizontally from the reactor)
5、Standards Compliance:
IEC289: 1987 Reactors
GB10229-88 Reactors (eqv IEC289:1987)
JB9644-1999 Reactors for Semiconductor Electric Drive
IV. Operating Conditions
1、Ambient temperature range: -25℃ to +45℃; relative humidity ≤90%.
2、Free from harmful gases, flammable or explosive substances.
3、The surrounding environment should have good ventilation. If installed inside a
4、cabinet, ventilation equipment should be added.
V. Installation Dimension Diagram
VI. Product Specifications, Models, and Dimension Table
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