We use test stand which simulates grid connection, main switch, regular loads, critical loads and a string of panels.
Power supply 160V, 2A max.
3 phase cable and switch
the cable on the output side is dismantled so that current sensors of the energy meter can be attched easily.
2 AC splitters, one for regular loads, the other oe for critical loads
Diagram
AC 380 from grid
|
+-------------------------------------------+
| |
3 phase switch |
| |
/ | \ I===================I |
| | |...I energy meter with I |
| | |...I sensors wrapped I |
| | |...I around each phase I |
\ | / I===================I |
| |
AC splitter --------------------- regular loads |
| |
| |
I=========|=======================I |
I | I |
I backup box --------------------- critical loads |
I | I |
I inverter ------ battery I |
I ^ \ I |
I : --- wifi stick I |
I : I |
I : LAN Box <-----------------------+
I : | I |
I=========================|=======I |
: | |
: WIFI LAN Bridge <---------------+
: |
DC power supply <----------------------------------+The components inside the === double lines === are the system under test.
The other parts belong to the testing equipment.