​High-Voltage Shore Power Slip Ring Solutions: Safeguarding Green Energy for Global Ports

As the maritime industry accelerates toward low-carbon and green port development, Alternative Marine Power (AMP) systems—also known as "Cold Ironing"—have become a global standard. At the heart of these systems, the shore power winch serves as the critical link for high-voltage cable deployment. To ensure an uninterrupted and safe power supply during berthing, the reliability of the high-voltage slip ring within the winch is paramount. JINPAT Electronics provides the robust rotary transmission technology required to meet these stringent maritime demands.

1. 6.6kV High-Voltage and 700A High-Current Slip Ring Engineering

Marine shore power applications require extraordinary electrical capacity to support large commercial vessels. JINPAT’s high-current slip rings are specifically engineered for these heavy-duty environments:

• Voltage Compatibility: Supports rated voltages up to 6600VAC (6.6kV), making it compatible with major international shore power supply standards.

• Power Capacity: Features a robust configuration of 3 × 700A power circuits plus a dedicated PE (Protective Earth) grounding circuit, capable of handling the massive energy loads required by container ships and tankers.

• Creepage & Clearance: Our high-voltage slip rings are designed with optimized insulation distances to prevent tracking and arcing in humid, saline port environments.

2. Seamless Integration of Power and Control Signal Circuits

Modern shore power management requires more than just electricity; it requires real-time data monitoring. JINPAT’s integrated slip ring solutions allow for the simultaneous transmission of high-power energy and critical control signals:

• Efficiency: By integrating 6 × 15A signal circuits, our rotary joints eliminate the need for secondary transmission systems, streamlining the winch architecture.

• Interference Protection: Advanced internal shielding ensures that the high-voltage lines do not disrupt the stability of control signals, boosting overall system reliability.

  
  

  

3. Advanced Contact Systems: Copper-Graphite and Precious Metal Technology

To withstand the mechanical stress of continuous rotation and high electrical loads, JINPAT employs a composite contact system within our winch slip rings:

• Copper-Graphite Brushes: Used for power circuits to provide exceptional current-carrying capacity and superior wear resistance during long-term operation.

• Precious Metal Contacts: Utilized for signal circuits to guarantee low-impedance and high-stability data transmission.

• Stable Rotary Structure: Our stationary brush and rotating ring configuration minimizes friction and heat generation, significantly extending the service life of the cable reel slip ring.

Empowering the Next Generation of Green Ports

With its high-voltage capacity and stable transmission, JINPAT’s shore power slip ring solutions are widely adopted in terminal power facilities and ship berthing scenarios worldwide. We are committed to supporting port energy conservation and emission reduction through professional-grade rotary joint technology.