Eastron SDM630MCT Series - Detailed Specifications; Power, Energy, and Input Specifications; Accuracy Specifications; External Monitoring Interfaces

EASTRON SDM630MCT User Manual
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China.
Tel: 0086-573-83698881/83698882 Fax: 0086-573-83698883 Web: www.eastron.com.cn
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Instantaneous power:
Power 0 to 3600 MW
Reactive Power 0 to 3600 MVAr
Volt-amps 0 to 3600 MVA
Maximum demanded power since last Demand reset Power factor
Maximum neutral demand current, since the last Demand reset (for three phase supplies only)
Energy Measurements
 Imported/Exported active energy 0 to 9999999.9 kWh
 Imported/Exported reactive energy 0 to 9999999.9 kVArh
 Total active energy 0 to 9999999.9 kWh
 Total reactive energy 0 to 9999999.9 kVArh
Measured Inputs
Voltage inputs through 4-way fixed connector with 2.5mm² stranded wire capacity. single phase
two wire(1p2w), Single phase(split-phase) three wire(1p3w),three phase three wire(3p3w) or
four phase four wire(3p4w) unbalanced. Line frequency measured from L1 voltage or L3 voltage.
Three current inputs (six physical terminals) with 2.5mm² stranded wire capacity for connection
of external CTs. Nominal rated input current 5A or 1A a.c. Rms.
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) Class 2 IEC62053-23
 Total harmonic distortion 1% up to 31st harmonic
 Response time to step input 1s, typical, to >99% of final reading, at 50 Hz.
*Auxiliary Supply
Two-way fixed connector with 2·5mm2 stranded wire capacity.
85 to 300V a.c. 50/60Hz or 120V to 424V d.c.. Consumption < 10VA.
Interfaces for External Monitoring
Three interfaces are provided:
 an RS485 communication channel that can be programmed for Modbus RTU protocol
 a pulse output indicating real-time measured energy.(configurable)
 a pulse output 3200imp/kWh (not configurable)
The Modbus configuration (Baud rate etc.) and the pulse output assignments (kW/kVArh) are
configured through the Set-up screens.