📝 Description

Used product. High-capacity industrial Nippon Chemi-Con U36L electrolytic capacitor, identified by marking 139B0358, with a rated voltage of 500 V DC and a capacitance of 2100 µF.
It is a component designed for power electronics applications, such as inverters, converters, and industrial power supplies. It is used to store electrical energy, stabilize DC voltage, and help reduce fluctuations and ripple in the DC circuit.
The U36L series is a family of aluminum electrolytic capacitors with screw terminals, designed for demanding applications requiring high capacitance, ripple current handling, and reliability. The general characteristics of this family are documented in the manufacturer's technical documentation.

⚙️ Main Specifications

• Manufacturer: Nippon Chemi-Con
• Series: U36L
• Marking: 139B0358
• Type: Aluminum electrolytic capacitor
• Rated capacitance: 2100 µF
• Rated voltage: 500 V DC
• Maximum indicated temperature: 85 °C
• Polarity: Positive and negative; polarity must be observed during installation
• Connections: Screw terminals
• Mounting: Cylindrical housing with a plastic support visible in the photographs
• Production code: 09U14L 04

🔌 Purpose and Operation

The capacitor can perform several functions in power circuits:

• Energy storage: Temporarily stores electrical energy.
• DC voltage smoothing: Helps reduce variations in DC voltage.
• Ripple filtering: Attenuates residual ripple on the DC bus.
• Support for conversion circuits: Contributes to the electrical stability of inverter and converter power stages.

🛠️ Applications

Possible applications include:

• Photovoltaic and industrial inverters.
• DC/AC and DC/DC power converters.
• High-voltage industrial power supplies.
• DC intermediate circuits (DC link).
• Power electronic equipment.
  Note: This original replacement component is intended for use in the following equipment:
• Danfoss VLT Series Inverters: Used for replacing and maintaining DC-bus filter banks inside industrial drives and Danfoss variable-frequency drives generally rated at 8 kW, 10 kW, 12.5 kW, and 15 kW. However, to identify the exact inverter model or equipment from which it was removed, compatibility must be verified by comparing the capacitance, voltage, dimensions, terminals, and electrical characteristics of the original component.

⚠️ Technical Warnings

• Strictly observe the polarity indicated on the capacitor.
• Do not exceed the rated voltage of 500 V DC.
• Before handling, verify that the capacitor is completely discharged. A capacitor of this size can retain a dangerous charge even after the equipment has been switched off.
• Before reuse, it is advisable to check capacitance, ESR, leakage current, and terminal condition.
• The temperature of 85 °C is the limit indicated on the housing, not an operating temperature to exceed.

🛡️ Product Condition

The photographs show the capacitor with its plastic support. Its electrical condition and actual remaining capacitance cannot be determined visually; the listing should therefore indicate whether the component has been tested.

📦 Package Contents

• 1 × Nippon Chemi-Con U36L electrolytic capacitor, 500 V – 2100 µF.
• Plastic support visible in the photographs.

🟢 Summary

Industrial Nippon Chemi-Con U36L electrolytic capacitor, 500 V DC, 2100 µF, 85 °C, code 139B0358, with screw terminals. Replacement component for power electronic circuits, to be selected according to the original component's specifications.