• Compact 6 DIN modules size
• High contrast LCD display
• True RMS measurement
• Active, reactive and apparent energy (4 counters)
• Neutral current measurement
• More than 35 electrical parameters measured and displayed (ENH version)
• Power and current demand calculation
• RS485 communication port
• Programmable transformer ratios
• Two digital outputs for energy pulsing
• Indication of phase sequence and wrong CT connection
• Up to 1% accuracy

• Switchboards, gensets, motor control centers, etc.
• Replacement of electromechanical meters for household, industrial and commercial applications
• Power monitoring & control systems
• Individual machine load monitoring
• Capacitor bank operation supervision
• Remote metering and cost allocation

Measurements

• Single phase and three-phase 3-wire or 4-wire unbalanced load operation.
• True RMS metering provides accurate measurement even for distorted waveform.
• More than 35 electrical parameters are measured. The basic version displays on the LCD the system values for a quick and easy check of the load conditions. The table on the right shows the measured parameters and the available options.
• Programmable 1A / 5A current full scale allows to fit the standard CTs.
• CT primary value is programmable up to 9999 to show the real energy consumption values

Front panel display

• High contrast LCD display.
• Two keys ensure the selection of the information on the LCD display and the instrument programming.
• Password protected setup and resetting operations.

Communication

• RS485 optoisolated communication port (option).
• Selectable MODBUS or A2 ASCII protocol. LONBUS protocol on request.
• Communication speed programmable up to 57600 bps (78 kbps in case of LONBUS).

Inputs & outputs

• Two digital optoisolated outputs for energy pulsing. The pulse value is programmable.
• On request input for Rogowski coils.

Advanced diagnostic functions

• Wrong current transformer polarity and phase sequence connection errors are indicated on the LCD display.
• Over / undervoltage, overcurrent and frequency out of range are detected to indicate the uncorrect working conditions.
• Pulse emission frequency too high or CT too high are checked to indicate programming mistakes.

Power supply (1)
Rated voltage: powered from measuring inputs
Consumption: 0.8 VA max

Voltage inputs
Rated voltage: A) 3x230/400 VAC +15% -20% - 4 wires
B) 3x120/208 VAC +15% -20% - 4 wires
C) 3x400 VAC +15% -20% - 3 wires
D) 3x208à·230 VAC +15% -20% - 3 wires
E) 3x100à·120 VAC +15% -20% - 3 wires
Input impedance: ›1,3 MOhm
Burden: max 0,15 VA per phase
Frequency: 45 - 65 Hz

Current inputs
Rated current (Ib): 1 / 5 ARMS programmable
Min / max measurable current: 20 mA / 7 ARMS
Maximum overload: 10 ARMS continuous - 100 ARMS for 1 sec.
Input impedance: 0,02 Ohm approximately
Burden: max 0,5 VA per phase
Insulation voltage: 480 VAC max between phases
Rogowski input: 200à·49995 A on request

Typical accuracy
Voltage: ±0.3% reading ±0.05% full scale
Current: ±0.5% reading ±0.05% full scale
Active power: ±1% reading ±0.1% full scale (PF=1)
Power factor: ) 1.5% reading (0.5 inductive - 0.8 capacitive)
Active energy: 1% reading (0.5 inductive - 0.8 capacitive)
Frequency: ±0.05% reading ±2 digits from 45 to 65 Hz

Display and operating controls
Display: high contrast LCD display 43x19 mm
8 digits for energies and other parameters + symbols
Keypad: 2 push-buttons

Communication port (2)
Type: RS485 on request, optoisolated
Baud rate: 300 to 57600 bps
Protocols: A2 ASCII, MODBUS

Digital outputs
Type: 2 NPN or PNP optoisolated
(10à·50V-100mAAC-DC or 5à·50V-100mAAC-DC)

Environmental conditions
Operating temperature: from -15 °C to +60 °C
Storage temperature: from -25 °C to +75 °C
Relative humidity: 80% max. without condensation

Mechanical characteristics
Material: plastic enclosure - noryl UL94-V0
Protection degree: IP51 (front panel); IP20 (terminals)
Terminals: conductors 2,5 mm2
Size / weight: 106x90x57 mm, 6 DIN rail modules / 300gr

Standards compliance
Safety: 73/23/EEC and 93/68/EEC directives, EN61010.1 safety standard
EMC: 89/366/EEC directive and following modifications 93/31/EEC and 93/68/EEC, EN50081-2, EN50082-2, EN61326/A1