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。
ADEPT TECH ROBOT SIGNATURE MODULE 20840-13400 REV B
CENTRIFUGAL PUMP 2"NPT IN 3HP 3 HP 3460RPM 575V MOTOR
NEW ROSEMOUNT SENSOR MODEL 0140-04 NEW IN BOX
NELES ACTUATOR FOR BALL VALVE ACTUATOR NELES
VELAN 4" WEDGE GATE VALVE S/N F12-1064C-13GX FLANGED
FISHER ROSEMOUNT 41B9144X022 ANALOG I/O CARD REV B
SKIDMORE PUMP W/ BALDOR MOTOR 1-1/2 HP T FRMAE 3450RPM
ENDRESS + HAUSER NIVOCOMPACT SENSOR FTC 730 120V 4" BOX
BONFIGLIOLI REDUCER GEAR 1.33 HP VF63 P1 P71B5 NEW
EPPENDORF MICROCYCLER THERMAL CYCLER 1000W 5465-B-00231
NORDSON FOAM MELT FM130 TEMPRATURE CONTROL BOARD 310906
AMETEK 40 PRESSURE OUTPUT CONTROLLER 1000psi IN 30 OUT
HABONIM H75 SR-2C-R 1/90 COMPACT 1/4 TURN AIR ACTUATOR
