Monitor Inverter; Interface Protection And Setting Points - JFY tech JSI-1100TL Installation And Operator's Manual

5.3 Monitor Inverter

After RS232 or RS485 link is connected correctly, open JFY monitoring software
"JFY communicator" that is installed from the attached CD, the user can monitor the
inverters. The right side of the main interface is the detailed information of inverter.
As to more detailed setting methods and other functions, please refer to "JFY
communicator user's manual" in the CD.
6. INTERFACE PROTECTION AND SETTING
POINTS
Incorporated interface protection is designed according to G83
to normal voltage and frequency variations in AC grid.
The interface protections ensure that the inverter cease to energize AC grid when
any parameters listed as below exceeds the applied operating setting points.
Disconnection is provided in case of any hardware malfunctioning.
The solar inverter will cease to energize AC grid in response to an interface
protection, it is achieved by the simple isolation of two internal AC relays in series.
Default interface protection settings
Parameters
Over voltage
Under voltage
Over frequency
Under frequency
Loss of the Mains
DC injection current
PV array Insulation
resistance
Reconnection time
Sudden change of
residual current
Continuous change
of residual current
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Setting trip time
60ms
60ms
60ms
60ms
120ms
120ms
100ms
20s
240ms
60ms
20ms
170ms
21
, it is insensitive
(E.g.)
Setting protection point
264Vac
198Vac
50.49Hz
47.51Hz
---
500mA
1Mohm
---
25mA
45mA
120mA
240mA