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 |
|---|---|---|---|---|---|---|
| Certificate | VACON NX ABS 19-LD1848307-PDA-DUP | English | Multiple | 01 Sep, 2019 | 2.0 MB | |
| Certificate | VACON NX ABS 19-LD1851904-PDA | English | Multiple | 01 Jul, 2021 | 359.7 KB | |
| Certificate | VACON NXP DC Guard CCS SW18Q00002_02 | English | Multiple | 01 Jan, 2019 | 1.8 MB | |
| Certificate | VACON NXP DC Guard CCS SW20PTA00002_02 | English | Multiple | 01 Nov, 2020 | 250.2 KB | |
| Certificate | VACON NXP DCGuard LR 18-00076 | English | Multiple | 01 Nov, 2018 | 5.0 MB | |
| Application guide | VACON® NXP DCGuard Application Guide | English | Multiple | 27 Jul, 2022 | 2.0 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 | |
| Fact sheet | VACON® NXP DCGuard™ | English | Multiple | 05 Mar, 2019 | 517.3 KB |
Software
Related applications
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Troubleshooting
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Need answers fast? Ask MyDrive® Assistant for help with your drive MyDrive® Assistant helps you to find information, answer common questions, or troubleshoot your motor drives and power converters. |
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.
