Current Collector high-performance aviation current collector DHK160-3-90A for an aerospace

Short Description:

High-performance aviation current collector

High-precision 3-circuit electrical slip ring assembly.

Each path handles 90A @ 28VDC, with a design-assured max speed of 2400r/min. Built for demanding intermittent duty (100s on/11s off). Exceptional specs: ≤0.1mm runout tolerance, 0.01N·m static unbalance, and robust 2500VAC insulation.

⚙️ Key Applications:

Aviation & Marine Propulsion Systems: Designed for left-hand rotation, ideal for integration behind propellers or in rotary joints requiring high-current transfer under significant vibration and runout.
High-Precision Rotary Platforms: Ultra-low runout and static unbalance make it perfect for radar bases, electro-optical turrets, and automated test equipment.
Heavy-Duty Industrial Automation: Reliable intermittent duty cycle suits applications like welding rotators, large indexing tables, and heavy machinery where high-current power transmission is critical during rotation.Built to rigorous standards. Reliable performance under pressure.

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Product Detail

Product Tags

Main Technical Parameters:

Number of Channels: 3
Rated Current: 90A per channel (28VDC)
Operating Voltage: 0~28VDC
Brush Spring Pressure: When the brush extends 25mm from the brush box end face, the spring pressure is 3N (pressure tolerance ±30%); when the brush extends 3.5mm from the brush box end face, the spring pressure is 5N (pressure tolerance ±30%).
Brush Height: Total brush length ≥25mm; after assembly of the current collector, the brush extends ≥3.5mm from the brush box assembly.
Operating Conditions:a) After the slip ring assembly is installed behind the propeller, the end face runout of the copper ring shall not exceed 0.1mm. Meanwhile, after the current collector is installed, it shall operate normally under the condition that the end face runout of the copper ring does not exceed 0.2mm.
b) When the brush replacement indicator line is exposed from the brush box, the brush must be replaced.

c) The slip ring assembly shall be used within the design dimensional limits, and its surface shall be free from burns, scratches, grooves, etc.
Rotation Direction of Slip Ring: Left-hand rotation (counterclockwise when viewed along the flight direction).
Rated Speed (Design Guarantee): 2000 r/min.
Maximum Speed (Design Guarantee): 2400 r/min.
Overspeed (Design Guarantee): The slip ring assembly shall withstand (2550/60) r/min for 30 minutes in a non-operating state without mechanical damage or permanent deformation (without brush box).
Operating Mode: Intermittent operation, maximum ON time 100s, minimum OFF time 11s.
Weight Requirements:a) Slip ring assembly: not more than 1100g.
b) Auxiliary box assembly: not more than 205g per unit.
Insulation Resistance (Ring-to-Ring, Ring-to-Brush):a) Cold state: not less than 20MΩ.
b) After damp heat test (for qualification test only): not less than 5MΩ.
Dielectric Strength (Ring-to-Ring, Ring-to-Brush):a) Cold state: ≥500VAC@50Hz, 60s, no breakdown or flashover.
b) After damp heat test (for qualification test only): ≥375VAC@50Hz, 60s, no breakdown or flashover.
Static Unbalance Requirement: Static unbalance shall be 0.01N·m.
Product Spare Parts: One additional brush box assembly per set of product.
Operating Environmental Conditions (Design Guarantee):a) Flight altitude: 0~10000m.
b) Maximum flight speed: 431km/h.

c) Maximum dive speed: 450km/h.

d) Wind speed limit (crosswind): 15m/s.

e) Operating temperature: -55℃ to +55℃.

f) Storage temperature: -55℃ to +70℃.