1. General
Information
SPM33 three phase multi-function power meters, mainly apply to Low Voltage Distribution
System, which voltage below AC400V (L-N), it can through RS485/ Modbus communication
to manage instrument of network, and achieve automatic control.
The main characteristics of SPM33 are as follows:
Real-time parameter measurement
(Three-phase voltage, current, active power, reactive power, apparent power, power factor,
frequency, active energy, reactive energy, and other combined electrical parameters
measurement)
Demand measurement
(Phase current demand, sub-phase active demand, total active demand, the maximum
current demand, maximum total active demand, three phase reactive power, total reactive
power, three phase apparent power, total apparent power demand, save their maximum
value.)
2 active status inputs
2 relay outputs
（
optional
）
Alarm function
Up to the 31
st
harmonic measurement, phase voltage and current harmonic content
(2 to 31),THD
1 RS485 communications, Modbus-RTU protocol
Phase sequence adjustment
Support Dual-source kWh measurement
1