Ensure safe DC-grid selectivity
VACON® NXP DCGuard™ enables fast disconnection and full selectivity between DC grids for all VACON® NXP series drives.
Utilizing DC grids rather than AC grids enables power distribution with lower power losses. However, ensuring selectivity and limited short circuit energy requires more sophisticated protection devices.
VACON® NXP DCGuard is a semiconductor protection device that maintains the stability of the DC grid by detecting and cutting off any faulty DC currents, fast. It isolates the faulty part of the system within 5 microseconds, protecting the surrounding equipment and ensuring uninterrupted operation.
It has DNV-GL, ABS, and Lloyd's Register type approvals, simplifying system approval for use in marine environments.
Current range
- 465-800 VDC………3-4140 A
- 640-1100 VDC…..….4-3100 A
Features and benefits
Correct system selectivity due to short circuit protection
No overvoltage spikes at current cut-off
Connect two different DC grids with voltage differences up to full DC voltage, thanks to controlled voltage ramp-up
Transmission cable overload protection
Reliable, proven technology
DC grids and selectivity using VACON® NXP DCGuard™
Utilizing DC grids instead of AC grids can improve system efficiency and system footprint by up to 20%. And there is a significant potential for energy saving especially when combining DC grids, energy storage and/or variable speed generators.
Documents
| Type | Name | Language | Valid for | Updated | Download | File type |
|---|---|---|---|---|---|---|
| Case story | Abeking and Rasmussen WSV | English | Multiple | 03 May, 2023 | 4.5 MB | |
| Case story | Abeking and Rasmussen WSV - German | German | Multiple | 03 May, 2023 | 4.5 MB | |
| Case story | Abeking and Rasmussen WSV - Turkish | Turkish | Multiple | 22 Sep, 2023 | 4.5 MB | |
| White paper | DC grids and selectivity using VACON NXP DCGuard | English | Multiple | 17 Mar, 2023 | 3.2 MB | |
| White paper | DC grids and selectivity using VACON NXP DCGuard - Chinese | Chinese (CN) | Multiple | 17 Aug, 2023 | 3.4 MB | |
| White paper | DC grids and selectivity using VACON NXP DCGuard - Polish | Polish | Multiple | 17 Mar, 2023 | 2.9 MB | |
| White paper | DC grids and selectivity using VACON NXP DCGuard - US English | English | United States | 17 Mar, 2023 | 3.2 MB | |
| Case story | Dingheng Ship - Mobile case - Chinese | Chinese (CN) | Multiple | 18 Jan, 2023 | 2.1 MB | |
| Case story | Dingheng Ship - Short case - Chinese | Chinese (CN) | Multiple | 18 Jan, 2023 | 8.1 MB | |
| Case story | Electrosteel Castings Ltd | English | Multiple | 03 May, 2023 | 1.7 MB | |
| Case story | Grotte electric ferry - Full case | English | Multiple | 15 Dec, 2021 | 1.1 MB | |
| Case story | Grotte electric ferry - Full case - Chinese | Chinese (CN) | Multiple | 11 May, 2023 | 6.5 MB | |
| Case story | Grotte electric ferry - Full case - Chinese Traditional | Chinese (CN) | Taiwan | 23 Mar, 2022 | 6.5 MB | |
| Case story | Grotte electric ferry - Full case - Dutch | Dutch, Flemish | Multiple | 23 Mar, 2022 | 6.4 MB | |
| Case story | Grotte electric ferry - Full case - Turkish | Turkish | Multiple | 22 Sep, 2023 | 6.4 MB | |
| Case story | Grotte electric ferry - Mobile case | English | English | Multiple | 15 Dec, 2021 | 916.2 KB | |
| Case story | Grotte electric ferry - Short case | English | Multiple | 15 Dec, 2021 | 3.9 MB | |
| Application guide | Hybrid propulsion article | Polish | Multiple | 15 Jul, 2019 | 669.1 KB | |
| Application guide | Hybrid propulsion article | Chinese (CN) | China | 15 Jul, 2019 | 815.8 KB | |
| Case story | IJ Ferries | English | Multiple | 16 Mar, 2023 | 4.0 MB | |
| Case story | IJ Ferries - Chinese | Chinese (CN) | Multiple | 16 Mar, 2023 | 4.2 MB | |
| Case story | IJ Ferries - Dutch | Dutch, Flemish | Multiple | 16 Mar, 2023 | 4.0 MB | |
| Brochure | Product Overview | English | Multiple | 09 May, 2025 | 12.6 MB | |
| Brochure | Product Overview - Chinese | Chinese (CN) | Multiple | 16 Mar, 2023 | 11.6 MB | |
| Brochure | Product Overview - Czech | Czech | Multiple | 16 Mar, 2023 | 11.4 MB | |
| Brochure | Product Overview - French | French | Multiple | 16 Mar, 2023 | 11.4 MB | |
| Brochure | Product Overview - German | German | Multiple | 16 Mar, 2023 | 11.4 MB | |
| Brochure | Product Overview - Italian | Italian | Multiple | 09 May, 2025 | 12.8 MB | |
| Brochure | Product Overview - Korean | Korean | Multiple | 16 Mar, 2023 | 13.2 MB | |
| Brochure | Product Overview - Polish | Polish | Multiple | 16 Mar, 2023 | 11.9 MB | |
| Brochure | Product Overview - Portuguese | Portuguese | Multiple | 16 Mar, 2023 | 11.9 MB | |
| Brochure | Product Overview - Russian | Russian | Multiple | 09 May, 2025 | 12.7 MB | |
| Brochure | Product Overview - Serbian | Serbian (RS) | Multiple | 16 Mar, 2023 | 11.9 MB | |
| Brochure | Product Overview - Spanish | Spanish, Castilian | Multiple | 16 Mar, 2023 | 11.8 MB | |
| Fact sheet | VACON NXP DCGuard | English | Multiple | 01 Mar, 2023 | 813.2 KB | |
| Fact sheet | VACON NXP DCGuard - Chinese | Chinese (CN) | Multiple | 01 Mar, 2023 | 899.9 KB | |
| Fact sheet | VACON NXP DCGuard - US English | English | United States | 01 Mar, 2023 | 836.5 KB | |
| Fact sheet | VACON NXP drive anti-sway functionality | English | Multiple | 27 Feb, 2023 | 569.0 KB | |
| Fact sheet | VACON NXP drive anti-sway functionality - US English | English | United States | 27 Feb, 2023 | 595.3 KB | |
| Application guide | VACON_NXP_DCGuard | Polish | Multiple | 15 Aug, 2019 | 1.4 MB | |
| Application guide | VACON® NXP DCGuard Application Guide | English | Multiple | 27 Jul, 2022 | 2.0 MB | |
| Design guide | VACON® NXP DCGuard Design Guide | Japanese | Multiple | 22 Feb, 2023 | 3.1 MB | |
| Design guide | VACON® NXP DCGuard Design Guide | English | Multiple | 05 Dec, 2018 | 3.5 MB | |
| Operating guide | VACON® NXP DCGuard Operating Guide | English | Multiple | 13 Nov, 2018 | 2.4 MB |
Software
| Type | Software Characteristic | Name | Version | Language | Released | Status | Download | File type |
|---|---|---|---|---|---|---|---|---|
| Application software | VACON® NXP DCGuard Application | 054 | English | 29 Jan, 2024 | Released | 2.3 MB | .zip | |
| System software | Fieldbus configuration file | VACON® OPTEA SIMATIC PDM EDD | 01 | English | 13 Nov, 2018 | Released | 461.7 KB | .zip |
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Case stories
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NETHERLANDS: Passenger ferries bridge Amsterdam’s IJ River, keeping the city connected around the clock. Hybrid propulsion powered by VACON® drives ensures 24/7 uptime, smaller generator size, better air quality, less noise and easy maneuverability of the vessels.
