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Voltronic Axpert VM IV - Page 16

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14
For VMIV-5600 ALL of the IGBTs are (IGBT ST/STGW60H65DFB 60A 650V N BULK TO-247)
For VMIV-3600 ALL of the IGBTs are (STGW45HF60WDA 45A 600V NPN BULK TO-247)
Parts (VMIV-3600)
Attribute
Reference values
Failure status
Q27/Q28/Q29/Q30
Resistor
GE: 22 ohm
GC: 184k
EC: 184K
Short or explosion
Diode
EC: 0.37V
CE: OL
Parts (VMIV-5600)
Attribute
Reference values
Failure status
Q27/Q28/Q29/Q30
Resistor
GE: 22 ohm
GC: 205k
EC: 205K
Short or explosion
Diode
EC: 0.39V
CE: OL
Note1: When you use the multimeter to measure the resistor of the transistor, because of
the capacitor in the circuit, it will cause the changing of the values when you measure the
CE and GE. So we recommend you measure the diode forward voltage of EC, and the
resistor of GE. These two values can reflect the situation of the transistor more correctly.
Note2: If one or more of them were damaged, please replace all of them.
Drivers (This part is only used for repair checking)