MU-M400X Tethering power system-Pro Version for DJI M400
The MU-M400X Tethering Power System (Pro Version) is an ultra-high-endurance power solution designed for the DJI Matrice 400 (M400). This system is engineered for missions that require the drone to stay airborne for hours or even days at a time, such as continuous surveillance, emergency lighting, or persistent communication relay.
By converting ground-based AC power into high-voltage DC, it bypasses the flight battery limitations, allowing the M400 to function as a "permanent" aerial tower.
1. Core System Components
Air Module (Pro): A lightweight power converter ($< 1kg$) that mounts to the M400’s quick-release rails. It features an active cooling fan and handles high-wattage throughput to power both the drone’s motors and intensive payloads.
Ground Power Station (Pro): A rugged, portable base station (often built into a GPC-style hard case) with a high-resolution 4.3-inch touchscreen for real-time monitoring of voltage, current, and cable tension.
High-Performance Tether: A 110-meter (standard) or 160-meter (optional) ultra-lightweight composite cable. The "Pro" version often includes an Integrated Fiber Optic line for secure, interference-free high-speed data transmission.
2. Pro Version Specifics
The "Pro" designation typically adds advanced automation and higher power output compared to standard kits:
3500W Peak Output: Supports the M400 even when carrying heavy payloads like the 1000W MU-M400 Lighting unit or the Zenmuse H30T.
Intelligent Auto-Winch: The winch automatically syncs with the drone's altitude. It maintains precise cable tension to prevent the tether from swaying in the wind or tangling during descent.
Dual Power Redundancy: In the event of a ground power failure, the system automatically switches the drone back to its onboard TB100 batteries, allowing for a safe emergency landing.
Fiber Optic Link: Enables 4K low-latency video streaming even in environments with extreme radio interference (where standard O4 transmission might struggle).
3. Technical Specifications
| Feature | Details |
| Input Power | 220V AC (50/60 Hz) |
| Output Power (Air) | 3000W Continuous / 3500W Peak |
| Max Flight Altitude | 100m – 150m (depending on cable length) |
| Continuous Flight Time | 24+ Hours (limitless with ground power) |
| Winch Speed | 0 – 2 m/s (Automated) |
| Ingress Protection | IP54 / IP55 (Weather resistant) |
| Cable Weight | ~12g per meter |
