Nominal (rated) current and voltage
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1 or 5 A; 57.7/100, 230/400, 400/690 V (phase /line)
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Voltage measurement accuracy
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Full Scale: ±0.2 %
Readings: ±0.2 % (0.2Unom≤U≤1.5Unom), ±0.75 % (0.05Unom≤U<0.2Unom)
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Current measurement accuracy
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Full Scale: ±0.2 %
Readings: ±0.2 % (0.2Inom≤I<2Inom), ±0.75 % (0.05Inom≤I<0.2Inom),
±2.0 % (0.01Inom≤I<0.05Inom)
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Power (active, reactive, apparent) measurement accuracy
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Full Scale: ±0.5 %
Readings: ±0.5 % (0.2Inom≤I≤2Inom, 0.2Unom≤U≤1.5Unom)
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Frequency measurement accuracy
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±10 mHz
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Measuring time / update settings
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50 msec (sliding window) / 20 msec, configurable averaging period
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Additional measured and computable parameters
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cos, tg, angles (phase and average), active and reactive energy,
U0, U1, U2, K2U, KU, I0, I1, I2, K2I, KI, THD,
plus 3 voltage inputs (1...300 VAC)
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Digital signals
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up to 32 processed signal: statuses of built-in digital inputs and outputs, statuses of digital inputs and outputs of external modules ENMV-1, logical expressions, diagnostic signals
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Digital inputs
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12 (dry or wet contact 24 V DC), debounce filter
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Digital outputs
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3 outputs: 250 V, 6A DC / AC
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Logical expressions
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up to 32 expressions in 32 functions: AND, OR, CMP, TIMER, VALID
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Event logging
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I/O history, event log
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Extension modules
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display modules: ENMI‑3, ENMI‑4m, ENMI-7;
digital inputs/outputs (up to 10 modules): ENMV‑1, ITS2
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Interfaces and protocols
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2 × RS‑485 (600...115200 baud), Modbus RTU, IEC 60870‑5‑101, USB
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Real-time clock
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500 μs (error less than 5 s per day without sync);
Time sync: IEC 60870‑5‑101, IEC 60870‑5‑104, SNTP
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Power supply
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18...36 VDC, 11 W
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Operating conditions and design
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–40...+70 °С / 130 × 100 × 58 mm (metal housing, IP20),
special bracket (please see Options and Accessories) or DIN-rail TH35 mounting
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