Sunsync 3 phase load Hz added

Author: proggaras

src/sunsynk/definitions/three_phase_common.py

@@ -78,6 +78,7 @@
     Sensor(644, "Load L1 voltage", VOLT, 0.1),
     Sensor(645, "Load L2 voltage", VOLT, 0.1),
     Sensor(646, "Load L3 voltage", VOLT, 0.1),
+    Sensor(655, "Load frequency", "Hz", 0.01),
 )
 
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