Three-phase photovoltaic grid-connected inverter Display operation panel
56
Item
LCD display
Instruction
Set
protection
point
parameter *
Grid-connected parameter
Undervoltage protection 1
Undervoltage time 1
Overvoltage protection 1
Overvoltage time 1
Under-frequency protection 1
Under-frequency time 1
AC undervoltage protection point (phase voltage)
115V
AC undervoltage protection point time
00.04s
309V
00.02s
AC under-frequency protection point
47.99Hz
00.12s
50.5Hz
00.12s
·
Input password
0000
196V
252V
1.90s
01.90s
49.49Hz
595s
50.2Hz
115s
060s
Islanding protection/open
Close
Open
AC overvoltage protection point (phase voltage)
AC overvoltage protection point time
AC under-frequency protection point time
AC over-frequency protection point
AC over-frequency protection point time
AC under-frequency protection point (phase voltage)
AC undervoltage protection point time
AC undervoltage protection point (phase voltage)
AC overvoltage protection point time
AC under-frequency protection point
AC under-frequency protection point time
AC over-frequency protection point
AC over-frequency protection point time
Grid-connected restart time
There are two protection points under
G83/G59 (Britain), CQC (China) and PEA
(Thailand), while for other grid-connected
standards, there is only one protection
point.
Entering corresponding sub menus to set
the over/undervoltage,
over/under-frequency protection point
and the protection time, press “
” and
“
” to change the value. Press “ENT”
key to confirm.
Generally, over/undervoltage protection
and under-frequency protection require
users to modify the value of undervoltage
protection 2 and under-frequency
protection 2. Over-frequency protection
requires a comprehensive setup of
over-frequency protection 1 and
over-frequency protection 2.
