Shore power supply system for ships (OPSS) 6.6 kV, 625 kVA – 10 MVA
The shore power supply system for ships (OPSS) feeds power from a 6.6 kV shore grid to a ship while it is berthed. Rating ranges from 625 kVA to 10 MVA, with 50 or 60 Hz on the ship side. The ship's diesel generators can be shut down at the quay.
- Input/output voltage
- 6.6 kV (also 440 V depending on ship type; 11 kV in development)
- Ship-side frequency
- 50/60 Hz
- Rating
- 625 kVA and 1.25 MVA (single units); 2.5 / 5 / 7.5 / 10 MVA (in parallel)
- Design
- 40-foot container (1–8 containers)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
The system supplies electricity from the shore to ships while they are berthed at the quay, and the ship's diesel generators are shut down. This reduces emissions of NOx, SOx and other pollutants, as well as CO2, in ports. The core is a static frequency converter (SFC), which produces the voltage and frequency the ship needs, 50 or 60 Hz, from the 6.6 kV shore grid. Power can be delivered at any voltage and frequency. The system synchronizes automatically with the ship's generator and disconnects from it. When part of the equipment is faulty or under maintenance, operation continues with a reduced number of units. The units are configured according to the power that the ship type needs at berth.
Single units are rated 625 kVA and 1.25 MVA. In parallel operation the result is 2.5, 5, 7.5 and 10 MVA, that is two, four, six or eight units of 1.25 MVA. Each unit is supplied in a 40-foot container, which simplifies installation and shortens construction time. The output cabinet has a 7.2 kV, 630 A, 20 kA vacuum circuit breaker for each unit. The containerized design allows the system to be deployed quickly at the quay.
The manufacturer gives the power needed at berth by ship type. Ro-ro ships and bulk carriers need up to 6.5 MVA, container ships up to 7.5 MVA, tankers up to 3.6 MVA and passenger ships up to 20 MVA. The ship-side voltage is 6.6 kV or 440 V, and for passenger ships an 11 kV version is under development.
The container is designed for outdoor installation at −20…+40 °C, humidity up to 85%, wind up to 46 m/s and a snow load of 1.0 m. The snow load assumes that snow is cleared in areas with heavy snowfall. The container is installed with the door and the external air conditioner unit facing the mountains. The enclosure complies with ISO requirements for marine containers, the external air conditioner units are of a high salt-resistance design, and splash protection follows JIS C 0920 class 4. The system complies with the IEC 80005 standard for shore power supply of ships. It is used in seaports and terminals.
Technical specifications
| Input/output voltage | 6.6 kV (also 440 V depending on ship type; 11 kV in development) |
|---|---|
| Ship-side frequency | 50/60 Hz |
| Rating | 625 kVA and 1.25 MVA (single units); 2.5 / 5 / 7.5 / 10 MVA (in parallel) |
| Design | 40-foot container (1–8 containers) |
| Output breaker | VCB 7.2 kV, 630 A, 20 kA |
| Conditions | −20…+40 °C, up to 85% humidity, wind 46 m/s, snow load 1.0 m |
| Standard | IEC 80005 |
| Required power by ship type | ro-ro ships and bulk carriers up to 6.5 MVA; container ships up to 7.5 MVA; tankers up to 3.6 MVA; passenger ships up to 20 MVA |
Request a price and lead time
Shore power supply system for ships (OPSS) 6.6 kV, 625 kVA – 10 MVA. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Questions and answers
What are the ratings of the shore power units?
Single units are 625 kVA and 1.25 MVA. In parallel they give 2.5, 5, 7.5 and 10 MVA from two, four, six or eight units of 1.25 MVA.
Which standard applies and what are the installation conditions?
The system complies with IEC 80005. The container is designed for −20…+40 °C, humidity up to 85%, wind up to 46 m/s and a snow load of 1.0 m.
What are the voltage and frequency on the ship side?
The voltage is 6.6 kV or 440 V and the frequency is 50/60 Hz, with an 11 kV version for passenger ships in development. The power needed at berth ranges from 3.6 MVA for tankers to 20 MVA for passenger ships.
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