Nameplate; Operating Principle; Operating Principle Of Wit 50-100K-A; Operating Principle Of Wit 50-100K-H - Growatt WIT 50K-A User Manual

3.3 Nameplate

The following figure shows the nameplate of WIT 100K-HU and WIT 100K-AU as
examples. The nameplate figure is for reference only. The actual nameplate prevails. For
detailed specifications, please refer to Section 10 Product Specifications.
Fig 3.7 Nameplate
9

3.4 Operating Principle

3.4.1 Operating Principle of WIT 50-100K-A

1> Convert DC power into AC power consistent with the voltage and power quality
requirements of the utility grid through an inverter circuit to supply power to the loads
and feed power into the grid;
2> Convert AC power into DC power through a rectifying circuit to charge the battery
BAT+
BAT-
DC SPD DC Relay DC Link
Fig 3.8 WIT 50-100K-A Grid-connected conceptual diagram

3.4.2 Operating Principle of WIT 50-100K-H

1> The Hybrid Inverter receives DC inputs from PV strings which go through the MPPT
routes. The DC power is then converted into AC power through an inverter circuit to
power the loads and feed power into the grid;
2> The PV strings can supply power to charge the battery through the MPPT routes;
3> Convert battery power to AC power supplies for the loads and feeding to the grid;
4> Charge the battery from the grid through a rectifier circuit.
NOTE: WIT 50K-H models have 7 MPPT routes. WIT 63K-H models have 8 MPPT routes.
WIT 75K-H and WIT 100K-H models have 10 MPPT routes.
Fig 3.9 WIT 50-100K-H Grid-connected conceptual diagram
R
S
T
N
DC/AC
AC SPD
AC Relay
Unit
GRID
10