SMY133-SMY134-SMP133 Operating Manual
1. General
Measurement & Evaluation
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three measurement voltage inputs, star / delta / Aron connection
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three/four measurement current inputs for CTs nominal secondary output of 5/1 A or 0.1 A
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10/12 periods evaluation cycle (200 ms at 50/60 Hz)
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continuous ( gap-less) measurement of voltage and current
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evaluation of harmonic components up to 50
th
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fixed window / floating window average values of all evaluated quantities with minimum &
maximum values registration
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built-in electricity meter :
◦
four-quadrant counters for both active and reactive energies at three tariffs
◦
single phase and three phase energies
◦
maximum of average active power value registration (maximum demand)
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built-in thermometer
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residual current inputs (certain models only)
Communication
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USB 2.0 communication port for fast data acquisition, configuration and firmware upgrades
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optional remote communication interface ( RS 485 / Ethernet / M-Bus)
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proprietary protocol with free data acquisition software ENVIS
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MODBUS RTU /TCP protocols for simple integration with third party SCADA software
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embedded webserver ( for instruments with Ethernet interface )
Datalogging Capabilities
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battery backed real time circuit (RTC)
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record interval from 0.2 second up to 1 hour
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high memory capacity for programmable recording of aggregated measurement values
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automated electricity meter readings at preselected time intervals
Inputs & Outputs ( Depending on Instrument Model )
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digital outputs (relays or solid state)
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digital inputs
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0 ÷ 20 mA
DC
analog inputs
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Pt100 temperature sensor input
Design
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96x96 mm plastic box for panel mounting
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TFT-LCD colour graphic display, 5 keys
6
