fcmto s ftmto »Energy Analyzer Femto D4 and Femto 96 are microprocessor based Energy analyzer with outstanding flexibility and accuracy designed to meet the most demanding applications of electrical parameters analyses and energy supply monitoring in the residential and industrial environment. The instrument combines the functions of multimeter, power & energy meter and analyzer. DC versions are available for direct current readings (e.g. photovoltaic and telecommunications systems). Femto D4 E-Wi and Femto 96 E-Wi have the same features of the Femto D4 and Femto 96 without inputs and outputs and in addition transmit and receive the data via radio waves, without limitations (wireless) using the E-Wi protocol based on the IEEE 802.15.4 standard. True-RMS and accurate measurements_ All the readings are “true-RMS” and they are obtained with a continuous sampling of the voltage and current waveforms in order to ensure the maximum metering accuracy of rapidly varying loads (e.g. spot welding). A sophisticated digital measurement method with a compensation system of the internal amplifiers' offsets ensure the maximum metering accuracy and stability irrespective of the signal level and the environmental working conditions. The 64 bit resolution allows an high detail of the energy value useful especially with small loads (e.g. devices in stand-by). A graphic dot matrix LCD display with a led backlight and adjustable contrast allows the simultaneous reading of 4 parameters and their symbols with high visibility digits. 3 buttons make the instrument use simple and rational, while the page displayed when turned on is configurable. Femto is suitable for virtually all type of electrical grid, three phase 3- and 4-wire, symmetrical and asymmetrical, balanced or unbalanced, single- and bi-phase, Low Tension and High Tension, with 1, 2 or 3 CTs as well as for 2 and 4 quadrant (import/export) measurement. The Femto 3I 70A is instead suitable for the measurement of up to 3 adjacent single phase loads. A simple keyboard programming allows the setting of all the operational parameters such as grid type, LT/HT, CT and VT ratios (free setting) integration time (1-60 min), digital output and alarms (thresholds, delays, hysteresis), digital input, RS485 serial communication. The instrument set-up is password protected. Power Supply_ Femto is equipped with a transformer power supply 230-240Vac. Other special versions on request: transformer type 115/120 Vac or 400Vac and switching type 15-36Vac/18-60Vdc and 9-24Vac/9-36Vdc. Parameter Type L1L2 L3 n Z P Range (1) Absolute value (mean over10 cycles - example: 200ms at 50Hz). (2) Mean value (rolling average) over the integration time (1.. 60 min. programmable). (3) Import /Export mean value (rolling average) over the integration time (1.. 60 min. programmable). (4) Internal temperature of the microprocessor. (5) Import/Export energies displayed as 9 digits in floating-point readings; internal energy metering performed with 0,1 Wh minimum resolution and 99.999.999,9999 kWh maximum energy count before over.

Energy Analyzer Serial communication Femto is equipped, as a standard feature on all versions, with an optoinsulated and over-voltage protected RS485 serial communication port. The protocol is a full compliant ModbusRTU suitable for communication with PLCs and with SCADA programs. The instrument data are read as numerical registers composed by mantissa and exponent in the IEEE format. A transmission speed of up to 38.400 bps, with maximum 125 registers (equivalent to 62 parameters) per query with no waiting time between queries, ensure an unrivalled communication speed and dialogue efficiency....

the energy saving technology Energy Analyzer Functional characteristics Electrical characteristics Measurement system: - True-RMS measurement up to the 31st harmonic - 2 and 4 quadrant measurement (programmable) - Continuous sampling of voltage and current waveforms (64 sampling per period, with PLL) - Automatic compensation of the offset RS485 serial port (Galvanically insulated): - Built-in over-voltage protection - Modbus-RTU protocol, full compliant Digital Input (depending on type): - Galvanically insulated - Programmable functionality: external pulse count, ON/OFF state detection, tariff...

Energy Analyzer Standards For the other versions of Femto RS485 4 DIN rail modules = 4 Flush mount 96x96 = C Type Femto D4 (or 96) = Femto D4 70A = Femto D4 70A ECT = Femto D4 70A 3I ECT = Femto D4 70A 3I = Electrex is a brand of Akse srl Via Aldo Moro, 39 - 42124 Reggio Emilia (RE) - Italy Tel : +39 0522 924244 - Fax : +39 0522 924245 www.electrex.it - email: [email protected] page 4 of 4 Data sheet Femto e E-Wi 2015 02 16-