主電路是給異步電動機提供調壓調頻電源的電力變換部分，變頻器的主電路大體上可分為兩類：電壓型是將電壓源的直流變換為交流的變頻器，直流回路的濾波是電容。鄭工19959281761
AB 1746-BAS-T
AB 1746-C16
AB 1746-C9
AB 1746-FI04I
AB 1746-FI04V
AB 1746-FIO4V
美國 AB Allen-Bradley 18.00 1746-HSCE/A
AB 1746-HSCE2
AB 1746-HSRV
AB 1746-HSTP1
Allen-Bradley-31 1746-HSTP1 E
AB 1746-HT
AB 1746-IA16
ALLEN-BRADLEY-35 1746-IA16
ALLEN-BRADLEY-36 1746-IA16
Allen-Bradley-63 1746-IA16 B
Allen-Bradley-64 1746-IA16 B
Allen-Bradley-65 1746-IA16 B
Allen-Bradley-66 1746-IA16 B
Allen-Bradley-40 1746-IA16 C
Allen-Bradley-41 1746-IA16 C
Allen-Bradley-58 1746-IA16 D
AB 1746-IB16
ALLEN-BRADLEY 1746-IB16
ALLEN-BRADLEY-14 1746-IB16
ALLEN-BRADLEY-15 1746-IB16
ALLEN-BRADLEY-16 1746-IB16
ALLEN-BRADLEY-17 1746-IB16
ALLEN-BRADLEY-18 1746-IB16
ALLEN-BRADLEY-19 1746-IB16
ALLEN-BRADLEY-20 1746-IB16
ALLEN-BRADLEY-21 1746-IB16
ALLEN-BRADLEY-22 1746-IB16
Allen-Bradley-112 1746-IB16 C
Allen-Bradley-113 1746-IB16 C
Allen-Bradley-114 1746-IB16 C
Allen-Bradley-115 1746-IB16 C
Allen-Bradley-116 1746-IB16 C
Allen-Bradley-117 1746-IB16 C
Allen-Bradley-118 1746-IB16 C
Allen-Bradley-119 1746-IB16 C
Allen-Bradley-120 1746-IB16 C
Allen-Bradley-121 1746-IB16 C
Allen-Bradley-122 1746-IB16 C
