Sinclair SCV-EB Series Service Manual page 81

LED location of inveter module for three-phase 12~16kW unit
5.29.4 Principle of DC inverter
A
Power
B
Inductor
Supply
C
(380V AC)
○,
①
① 380-415V AC power supply change to DC power supply after bridge rectifier.
② Contactor is open the current across the PTC to charge capacitor, after 5 seconds the contactor closed.
③ The capacitor output steady 540V DC power supply for inverter module P N terminals.
A
Bridge
B
rectifier
C
1
PTC
Contactor
Conpacitor
②
○,
2
P
U
V
Inverter module
Compressor
(Vp-n: 540V DC)
W
N
○, ③
3
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