通常情况下，电源设备的内阻抗可以起到缓冲变频器直流滤波电容的无功功率的作用。这种内阻抗就是变压器的短路阻抗。电源容量相对变频器容量越小，内阻抗值相对越大，谐波含量越小；电源容量相对变频器容量越大，则内阻抗值相对越小，谐波含量越大。所以选择变频器供电电源变压器时，*选择短路阻抗大的变压器。
Sony LH51-3 J1 display unit
Hitachi fiberoptic rotary joint HRJ-4EDL-R
Canon INL-DT GG0-1405
Areva MiCOM P143
Mitsubishi A2NCPUP21 A2NCPU P21 with A3NMCA4
Omron C200HE-CPU32-Z COM04-V1 C200HW-CLK21 NC413 PLC
Omron C200H-MC221 C200H-AD003 C200H-ID217 OD219 PLC
Orthodyne electronics 171562 Rev. B
ESEC SA 630.181/3
TV250 controller pump 9699425S004
Sciex DACS & VACUUM GAUGE 025173
IAI SEL-GDS-3-AC-200. 30. 20-2
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ICT teradyne 4590059T Rev: 24-10-01
GOOCH HOUSEGO QS27-4SN ROFIN SINAR LASER Q SWITCH
Rofin Sinar Laser LLM A.Nr. 3040780
H# VXI SM8102-85-50-FC P/N: 70-0128-002
HV# Tektronix 1731 waveform monitor
Rosemount 300S1AAD1M5 & 3051S2CG1A2F12A1AB2C1D1D2M504
RVSI head P/N: 52335WH
