CTSO-C178 Single Phase 115 VAC, 400 Hz Arc Fault Circuit Breakers.pdf

English Translation Version for Reference Only Number:CTSO-C178 Date of approval:Jun 21 2019 CAAC Approved by:Xu Chaoqun China Civil Aviation Technical Standard Order This China Civil Aviation Technical Standard Order (CTSO)is issued according to Part 37 of the China Civil Aviation Regulations (CCAR-37).Each CTSO is a criterion which the concerned aeronautical materials parts or appliances used on civil aircraft must ply with when it is presented for airworthiness certification. Single Phase 115 VAC 400 Hz Arc Fault Circuit Breakers 1.Purpose. This China Civil Aviation Technical Standard Order (CTSO)is for manufacturers applying for single phase 115 VAC 400 Hz arc fault circuit breakers (AFCBs)CTSO authorization (CTSOA).This CTSO prescribes the minimum performance standards(MPS)that AFCB must first meet for approval and identification with the applicable CTSO marking. 2.Applicability. This CTSO affects new application submitted after its effective date. Major design changes to article approved under this CTSO will require a new authorization in accordance with section 21.353 of CCAR-21R4. 3.Requirements New models of AFCBs identified and manufactured on or after the -1- English Translation Version for Reference Only CAAC CTSO-C178 effective date of this CTSO must meet the MPS in SAE International's Aerospace Standard (AS)5692 Arc Fault Circuit Breaker (AFCB) Aircraft Trip-Free Single Phase 115 Vac 400 Hz-Constant Frequency dated October 2004 and the additional requiremen...