Electrical Connection Diagram - Epcom EPIG7K Manual

5.2 Electrical Connection Diagram

Electrical connection of the inverter includes connection on the DC side, connection on
the AC side, communication modules connection, second protective earth connection
and connection of anti-backflow meter.
No. Item
A PV arrays
B DC switch
Communication
C
modules
D AC circuit breaker
E Utility grid
Description
2 kW / 2.5 kW / 3 kW inverters are featured with single
MPPT and single string input. 3kW-D / 3.68 kW / 4 kW /
4.6 kW / 5 kW / 6 kW / 7 kW inverters are double MPPT
and two strings input. The maximum allowable
open-circuit voltage of each PV string is 600V, and the
maximum allowable working current of the each string
input terminal is 11 A.
Users can directly control DC input On / Off.
It is used to connect Wi-Fi or other communication
module.
It is used as a protective device during electrical
connection. PE protection cable must be reliably
grounded. It is recommended that 2 kW / 2.5 kW / 3 kW /
3kW-D inverters use AC circuit breakers of 25 A, 3.68
kW / 4 kW / 4.6 kW / 5 kW / 6 kW / 7 kW inverters use
AC circuit breakers of 32 A. Each inverter requires a
separate circuit breaker, and multiple inverters cannot
share the same circuit breaker.
The rated voltage of the power grid is 230 V.
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