• Highly sofisticated power meter providing advanced functionality features
• Large graphic LCD display with excellent visibility
• Up to four plug-in options
• Infrared communication port
• THD even, odd and individual FFT harmonic analysis up to 50th order
• Power and current demand calculation
• On-board memory up to 2 MB
• Up to 10 programmable recordings with different start and stop time
• Event and alarm recording, sags and swells, waveform capture, waveform display, phasor diagrams, hystorical trending, TOU and more...
• Accuracy according to EN62053 (ex EN61036)
  
  

• Switchboards, gensets, motor control centers, etc.
• Power monitoring & control systems
• Individual machine load monitoring
• Power demand analysis and management
• Harmonics monitoring
• Remote metering and cost allocation
• Motor inrush current studies
  
  

Measurements

• Three-phase 3-wire or 4-wire unbalanced load operation, bi-phase and single-phase.
• Direct measurement up to 600 (750) VAC.
• Programmable 1A / 5A current full scale.
• Fully bi-directional, four-quadrant readings. 10 energy counters are available, the apparent power/energy is splitted in four counters: import lagging, import leading, export lagging, export leading.
• Volts, Amps, Power, PF, Frequency, Energy, Min/Max values, Demand, Harmonics, etc. The full version instrument provides more than 600 measured/calculated parameters and shows on the LCD more than 30 graphical pages.

Power quality

• Individual & total harmonic distortion for voltage and current up to the 50th order. The harmonic content is represented like even, odd and total.
• CPU2 option: the co-processor board perfoms the simultaneous high-resolution sampling of voltage and current, allowing the cycle-by-cycle power analysis for 50/60 Hz lines. The CPU2 board supports different application like VMAX and WCAP (see below). The instrument with CPU2 board performs at the same time the wattmeter functions, the harmonic analysis, the basic recording function and the selected cycle-by-cycle power analysis function.
• VMAX option - two functions are selectable:
  1. Sags & swells detection on L-N voltages with half cycle resolution (10ms @ 50Hz). Pre- and post-trigger logging (100+100 half cycles RMS values). The detected events are recorded. This data is viewed on the PC according EN 50160 standard.
  2. Min/Avg/Max values calculation and recording with one cycle resolution (20ms @ 50Hz). This function allows to record up to 10 parameters selected among voltage, current, power, PF and frequency. The data is viewed on the PC according EN 50160 standard.
• WCAP option - advanced waveform capture function of currents and L-N voltages. In case of single trigger the threshold mode is programmable as voltage or current; in dual trigger the threshold mode is xed including both parameters (voltage&current), allowing the waveform capture in case of threshold overcoming both for voltage and current. The instrument can store up to 10 + 200 waveforms before and after a threshold overcome, with a resolution from 8 to 32 samples (depending on the number of waveforms). The WCAP option includes a second selectable function: Min/Avg/Max values calculation and recording (see previous paragraph).

Recordings

• 2 MB non-volatile memory for data storage.
• Up to 10 programmable recordings with different start and stop time. Different type of recordings can be chosen:
  • import/export active, reactive and apparent power demand with programmable average time.
  • instantaneous read values selected between the main parameters. The recording interval time is programmable between 1 and 9999 seconds.
  • instantaneous min/max values measured during the recording interval time. The recording interval time is programmable between 1 and 9999 minutes.
  • voltage and current harmonic values measured during the recording interval time. The recording interval time is programmable from 1 to 60 minutes.
• Time-of-Use (TOU) programmable data recording. The TOU function stores the energy consumption in different registers according the programmed time-scheme. A group of 120 registers give the situation of the previous and present day, and of the previous and present month. This feature is designed to t different tariff structures. It is possible to program up to 10 daily tariff schedules containing up to 3 tariffs and 8 tariff changes. Each schedule can be assigned to the days of the week and months as requested. Up to 20 holidays can be assigned to the lowest tariff. A diagnostic algorithm checks and noti es any setup overlapping.
• Event, alarm and digital outputs ON/OFF recording. The instrument records the status change of 8 programmable set points, the digital outputs ON/OFF and the instrument supply ON/OFF. All the events are integrated by date and time reference.
• The CPU2 option includes 1 MB non-volatile data memory. Depending on the CPU2 con guration the following information (already described in the “Power quality” paragraph) can be recorded:
  • sagsandswellsevents.Theoccurringdipsandovervoltageoveraprogrammablethresholdaredetectedandtheinstrument records the date and time of the event, the lenght and the RMS value of 100+100 half-cycles before and after the event.
  • min/avg/max values of the main measured parameters with continuous sampling and 1 cycle minimum resolution for RMS calculation. The resolution is programmable between 1 and 99 cycles to simulate the recorder response time as needed. The programmable average time de nes the time interval between recordings.
  • more than 200 waveforms when a programmable threshold is overcome. The instrument records up to 10 + 200 waves before and after the trigger, with the time reference. The resolution is programmable from 8 to 32 samples / cycle.

Modularity

• Four slots for optional AO plug-in boards (up to no. 2 analog outputs 0-20 or 4-20 mA).

Communication

• Both RS232 and RS485 selectable by dip-switches.
• MODBUS or A2 ASCII protocol.
• Communication speed programmable up to 57600 bps.

Inputs & outputs

• Two digital outputs for energy pulsing or for alarm tripping.
• Up to 4 analog outputs 0-20 or 4-20 mA.

Other

• Real time clock with battery backup.
• Calculation of capacitor bank value for PF compensation.
• Protection from undesired access to setup.
  
  

Power supply
Rated voltage: 65...250 VAC / 90...250 VDC
Consumption: 5 VA max

Voltage inputs
Maximum measurable voltage: 600 (750) VAC max L-L
Input impedance: ›1,3 MOhm
Burden: max 0.15 VA per phase
Frequency: 45 - 65 Hz

Current inputs
Rated current (Ib): 1 / 5 A programmable
Min / max measurable current: 20 mA / 7A
Maximum overload: 10 A continuous - 100 A for 1 sec.
Input impedance: 0,02 Ohm approximately
Burden: 0,5 VA max per phase
Insulation voltage: 150 VAC max between phases

Typical accuracy
Voltage: ±0.1% reading ±0.03% full scale
Current: ±0.1% reading ±0.05% full scale
Active power: ±0.5% reading ±0.1% full scale (PF=1)
Power factor: 1% 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: backlighted graphic LCD display, 128 x 128 dots
Keypad: 5 push-buttons

Data memory
Type: on-board non-volatile FLASH, 2 MB

Communication port
Type: 1 selectable RS232 or RS485, optoisolated
Baud rate: programmable from 300 to 57600 bps
Protocols: A2 ASCII or MODBUS

Real time clock
Type: with battery backup
Accuracy: ± 30 ppm

Digital outputs
Tipo: 2 isolated optomos (50V - 300 mADC)

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: metal enclosure
Protection degree: IP54 (front panel); IP20 (terminals)
Terminals: EU standard pluggable terminals
Size / weight: 144x144x110 mm / 900 g

Standards compliance
Safety: 73/23/EEC and 93/68/EEC directives, EN 61010.1 safety standard
EMC: EMC: 89/366/EEC directive and following modifications
93/31/EEC and 93/68/EEC, EN50081-2, EN50082-2, EN61326/A1