I. Product Overview The GLC200‑FC200/T200 tethered power system is compatible with DJI’s FlyCart200/T200 drones, providing safe, reliable, long‑endurance flight power for up to 24 hours or more, while also enabling wired transmission of data, imagery, video, and control signals via an optical fiber channel (optional; requires pairing with fiber optic transceiver equipment). The tethered power system comprises a tethering box, a power supply unit, and an onboard power module. The tethering box—encompassing both the cable management unit and the power supply—is equipped with AC/DC conversion, a tethering cable, a cable reeling mechanism, servo motors, communication modules, a cooling system, and an integrated control and management system. It converts alternating current from grid power or generators into high‑voltage DC, which is transmitted through the tethering cable to the onboard power module. This module then steps down the high‑voltage DC to low‑voltage DC to power the drone and mission payloads such as floodlights, enabling continuous flight durations of 24 hours or longer. By mounting mission payloads—including gimbal cameras, loudspeakers, drop‑delivery devices, communication modules, and high‑pressure spray nozzles—the tethered drone can perform extended video recording, area surveillance, searchlight operations, public address broadcasting, relay communications, firefighting, curtain‑wall cleaning, and other applications. It finds broad use across multiple sectors, including communications and command, aerial monitoring, public security and counterterrorism, traffic management, disaster relief and emergency response, fire protection, news reporting, scientific research, and national defense and military industries. II. Key Features Automatic Cable Reel‑In/Out, Simple Operation: The system automatically adjusts tension during takeoff and landing to manage cable deployment and retrieval, eliminating the need for manual intervention throughout the entire operation. No torque, speed, or gear adjustments are required. Superior Protection, Weather‑Resilient: The onboard power supply and lighting circuits feature fully sealed designs with waterproof connectors; the upper electrical components of the tethering box are enclosed, with inclined upward‑flowing heat dissipation channels. Structural parts are mounted using compression‑type rubber gaskets, effectively preventing siphon‑induced water ingress. The system can operate in rainy or snowy conditions and adapts to a wide range of harsh environments. Stable Voltage Regulation, Battery‑Friendly: The onboard power module accepts a wide input voltage range and delivers stable output, ensuring that the drone’s battery remains isolated and serves only as a safety backup. Regardless of tethered flight duration, the drone’s battery level never drops below 90%, safeguarding its backup function and protecting it from damage caused by repeated charging and discharging. Human–Machine Interaction, Remote Communication: The device’s display screen, handheld interface, and client‑side host computer all support real-time monitoring, configuration, and control, complete with audible and visual alarms. It also enables viewing, saving, and downloading operational data, as well as firmware upgrades. Ultra‑Long Endurance, Sustained Operations: Long‑term testing has demonstrated that, under typical operating conditions, this system allows the drone to maintain continuous hover at a fixed point for 24 hours or more.
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