Njoy Ranger 30KR User Manual page 22

 BUS Voltage: The real time value of DC BUS (P and N) voltage.

TEMP: Temperature of L1, L2 and L3 phases.

Backup Time: Estimated discharge time.

BATT Voltage /Charging Current/Discharging Current: The real time
value of DC related information.
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Measure screen page 9
Measure screen page 10