CH92133 Champion Exciter

The Champion Aerospace CH92133 is a solid-state turbine ignition exciter assembly. It is FAA-PMA approved for Rolls-Royce Model 250 Series I, II, III and IV engine applications as a replacement for specified exciter part numbers. Applicability and installation must be confirmed against the applicable approved engine and aircraft maintenance data.

Designed with solid-state circuitry, the CH92133 provides a radiation-free exciter solution without radioactive materials. Its form, footprint and weight are stated by Champion to match the relevant OEM unit, supporting replacement installation where approved.

• Manufacturer part number: CH92133
• Input power: 14–30 VDC; 1.1 A typical, 1.5 A maximum
• Output voltage: 7 kV minimum; 8 kV typical
• Spark rate: 5–15 sparks per second, dependent on input voltage
• Stored energy: 1.4 J nominal
• Operating temperature range: −54 °C to +121 °C
• Continuous-duty operation rated at +85 °C
• Unipolar output waveform with 40 μs spark duration

FAA-PMA replacement references: Rolls-Royce 6899093 and 6895573; Unison 10-614950-1, 10-387150-1 and 49522.

Champion states that the CH92133 has been tested for vibration, shock, high- and low-temperature performance, continuous operation at an equivalent altitude of 7,925 m, and electromagnetic compatibility in accordance with RTCA/DO-160E test criteria.

Documentation: Champion Aerospace M250 CH92133 Exciter Data Sheet