EASTRON SDM630-Modbus V2 User Manual
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Current THD% for each phase
Power factor and Frequency and Max. Demand
Frequency in Hz
Instantaneous power:
Power 0 to
99999 W
Reactive Power 0 to 99999 VAr
Volt-amps 0 to 99999 VA
Maximum demanded power since last Demand reset Power factor
Maximum neutral demand current, since the last Demand reset (for 3p4w supply only)
Energy Measurements
⚫
Imported active energy 0 to 999999.99 kWh
⚫
Exported active energy 0 to 999999.99 kWh
⚫
Imported reactive energy 0 to 999999.99 kVArh
⚫
Exported reactive energy 0 to 999999.99 kVArh
⚫
Total active energy 0 to 999999.99 kWh
⚫
Total reactive energy 0 to 999999.99 kVArh
Measured Inputs
Voltage inputs through 4-way fixed connector with 25mm
²
stranded wire capacity. single phase
two wire(1p2w), three phase three wire(3p3w) or four phase four wire(3p4w) unbalanced. Line
frequency measured from L1 voltage or L3 voltage.
Accuracy
⚫
Voltage 0·5% of range maximum
⚫
Current 0·5% of nominal
⚫
Frequency 0·2% of mid-frequency
⚫
Power factor 1% of unity (0.01)
⚫
Active power (W) ±1% of range maximum
⚫
Reactive power (VAr) ±1% of range maximum
⚫
Apparent power (VA) ±1% of range maximum
⚫
Active energy (Wh) Class 1 IEC 62053-21
⚫
Reactive energy (VARh) ±1% of range maximum
⚫
Total harmonic distortion 1% up to 31st harmonic
⚫
Temperature co-efficient Voltage and current = 0.013%/°C typical
Active energy = 0·018%/°C, typical
⚫
Response time to step input 1s, typical, to >99% of final reading, at 50 Hz.
Interfaces for External Monitoring
Three interfaces are provided:
⚫
an RS485 communication channel that can be programmed for Modbus RTU protocol
⚫
an Pulse output(Pulse 1) indicating real-time measured energy.(configurable)
