UNIT ASSY, TRANSFORMER RECTIFIER (P/N 28VS.200Y-4DH) - Serviceable

The 28VS.200Y-4DH is a transformer rectifier unit assembly that converts 115 VAC, 400 Hz aircraft AC power into regulated DC output for avionics systems and DC bus distribution. This solid-state power conversion module qualifies to DO-160 and MIL-STD-704 aerospace standards. The unit integrates transformer and rectifier stages in a single assembly, providing reliable power conditioning during normal and emergency electrical operations.

Installation follows the aircraft maintenance manual and wiring diagram specifications. Verify compatibility with your aircraft's illustrated parts catalog before replacement to ensure proper voltage regulation and load capacity.

What is the UNIT ASSY, TRANSFORMER RECTIFIER (P/N 28VS.200Y-4DH)?

The 28VS. 200Y-4DH is a transformer rectifier unit assembly that converts 115 VAC, 400 Hz aircraft AC power into regulated DC output for avionics systems and DC bus distribution.

Is the 28VS.200Y-4DH compatible with my aircraft's avionics suite?

Avionics compatibility depends on your aircraft model and existing installation. The UNIT ASSY, TRANSFORMER RECTIFIER is available in: Serviceable. We recommend checking your aircraft's wiring diagrams and STC documentation, or contact our avionics team for compatibility assistance.

Does the 28VS.200Y-4DH come with an 8130-3 airworthiness tag?

Availability of an FAA 8130-3 tag depends on the part condition. Overhauled and repaired units typically include 8130-3 documentation. As-removed units may include a removal tag with trace history. Contact us for specific documentation on the condition you need.

Do you offer bench testing for the 28VS.200Y-4DH?

We can arrange bench testing through our network of FAA-certified repair stations. Call (904) 998-9101 for testing availability and turnaround times, or submit an RFQ with your specific requirements.