Schematic Diagram; Appearance Of Inverter - Epcom EPIG7K Manual

2.2 Schematic Diagram

DC Switch
+
PV1
-
+
PV2
-
Note: The above figure is the schematic diagram of 3 kW-D / 3.68 kW / 4 kW / 4.6
kW / 5 kW / 6 kW / 7kW inverters. A single input is applied to 2 kW / 2.5 kW / 3 kW
inverters.
The inverter topology consists of boost and inversion. PV input feeds into the public
power grid via DC filtering, boosting, DC bus decoupling, inverter and AC filtering.
It adopts DSP and MCU dual-chip redundancy technology to realize fault detection
and protection of the inverter. The interior of the inverter has two groups of relays
connected between the inverter circuit output and power grid port, and the groups of
relays have self-test
connection between the inverter circuit and the utility grid in the event of a failure.
It realizes the remote monitoring of the PV power generation system via the
communication methods of RS485, GPRS and Wi-Fi.

2.3 Appearance of Inverter

MPPT1
(DC/DC)
MPPT2
(DC/DC)
PV
Insulation
Detection
function
Inverter
DC BUS
(DC/AC)
Dual DSP/MCU
that can ensure
~ 6 ~
LCL Filter
Relay
LED
RS485/GPRS/WiFi
reliable disconnecting
GFCI
L
N
PE
GND
of the