The WasherDrone M400 Tethered Power System feeds uninterrupted ground power to a DJI Matrice 400 through a single lightweight tether, removing the endurance ceiling that limits battery-powered cleaning flight. A ground module converts mains AC to high-voltage DC and sends it up a 2.85 mm conductor; an onboard air module steps it down to a constant 51.6 V, so the drone battery stays full as a landing reserve rather than a flight-time limit. Key benefits No endurance ceiling. Flight time is set by the mission, not by battery capacity. Battery protected. Constant-voltage delivery avoids charge/discharge cycling and capacity loss. Hands-free winch. Adaptive-torque reel follows take-off and landing automatically. Power-loss safe. On a supply cut the system switches to backup and retracts the cable. Field-ready. IP-rated modules, −20 to 45 °C range, 4.3-inch live telemetry display. CE certified. LVD + EMC certification; CNAS third-party tested. How it works Power travels up thin, light, high-voltage DC and is converted at the drone — the reason the tether stays light enough for agile cleaning flight. Ground module: Wide-range single-phase mains in; 700–750 V DC out, up to 3500 W. Tether: 2.85 mm cable carries DC power to the drone. Air module: Steps down to a constant 51.6 V; backup battery held full for landing. Specifications System Drone compatibility DJI Matrice 400 (only) Cable length 55 m / 110 m (optional 55–300 m) Operating temp. −20 to 45 °C Certification CE (LVD+EMC); CNAS tested Ground module Input 190–240 V AC, 1-phase, 50/60 Hz Output 700–750 V DC, adjustable Output power ≤ 3500 W continuous Winch speed 0–2 m/s, adjustable Winch tension 0–15 N, adjustable Protection IPx4 Display 4.3-inch touchscreen Weight 12.5 kg (incl. 110 m cable) Air module Input 580–810 V DC Output 51.6 V DC, constant Output power 3000 W continuous Protection IP54 Mount Quick-release rail Weight 850 g Tether cable Outer diameter 2.85 mm Weight 12 g/m Rated current 5 A Insulation ≤ 2000 V DC tested Packaging & options Case Aviation hard case, 550×450×450 mm Ship weight 23–24 kg Lighting 800 W (optional) Comms USB-C / Bluetooth 5.0 (GCS ↔ station) Models TPS55M — 55 m tether (Compact range) TPS110M — 110 m tether (Standard high-rise) Custom — up to 300 m (On request) What’s included Ground power module Air module Selected tether length Aviation hard case Before you deploy Continuous operation. The system is built for round-the-clock flight. Sustained flight time depends on the drone's structural and electrical limits under cleaning payload and should be validated for your configuration. High-voltage tether. Route the cable clear of the spray zone, keep it dry, and inspect for wear before each deployment. Wear part. The tether cable is a consumable and is not covered by warranty. Requires a DJI Matrice 400. The system powers an M400; it is not a standalone unit. Shipping and customs duties are not included. Requires a DJI Matrice 400 (not included).
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