VACON® NXP DCGuard

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.

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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.

VACON® NXP DCGuard 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.

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