Hitachi RAM-71QH5 Service Manual page 53

320-360V
B
R24
DC current (Id)
detection resistor
Fig. 3-4 System Power module circuit (U + is OFF, V – is ON)
Fig. 3-5
System Power Module
+
+ +
U V
– –
U V
_
A
+
W
U
V
W
–
W
– 62 –
DC compressor
motor
U coil
V coil
W coil