HBD PV500-0007M1 User Manual page 18

PV500 series solar pumping inverters
Terminal
R, S, T
(L, N)
(+), (-)
U, V, W
Description for G1 single-phase output models
1) Generally, the output terminals U and W of the inverter connect to the phase cables of the
single-phase motor.
2) If the single-phase pump cannot be started, the two-phase control method must be used,
and the start-up and running capacitors (if any) of the motor must be removed. The figure
below shows the internal wiring of the common single-phase motor. In the figure, L1, L2, C1,
and C2 indicate the running winding, start-up winding, running capacitor, and start-up
capacitor. When the motor speed exceeds 75% of the rated speed, the start-up capacitor is
switched off.
Internal wiring of the single-phase motor winding after removing the starting and running
capacitor:
Terminals of main circuit
Name
3PH (1PH) AC input terminals, connected to the grid
AC input Note: Use the screws equipped with the inverter for
wiring.
PV input Solar cell panel input terminals
3PH/1PH AC output terminals, connected to the pump
Inverter
motor
output
Note: 1PH motors must connect to terminals U and W.
Safety Safety protection grounding terminal. Each inverter
grounding must be grounded
Function
-16-
Installation guidelines