Single-circuit metering, measurement & analysis diris_981_a_front.eps DIRIS_576_i_1_en_cat DIRIS A-20 Multifunction power metering & monitoring device - PMD Multi-measurement The solution for > Industry > Infrastructures > Building DIRIS A-20 Function DIRIS A-20 units are power metering and monitoring devices that provide the user with all of the measurements needed to complete energy efficient projects successfully and to provide assured monitoring of electrical distribution. All of this information can be used and analyzed remotely with the help of energy efficiency software programs. Advantages User-friendly operation With its large backlit multiple-display screen with 4 pushbuttons, the DIRIS A-20 is easy to use. Compliant with ANSI C12.20 and IEC 61557-12 References standard for PMDs (Performance metering & monitoring devices), IEC 61557- 12 guarantees performance levels and high performance from the PMDs under the environmental conditions typical of industrial and building applications. Detects wiring errors The DIRIS A-20 is equipped with an error correction function for current transformer connection. Customizable Additional communication and input/output modules can extend the basic functional scope of this product. Equipped with additional modules, the DIRIS A-20 can provide the user with flexibility and expandability throughout the service life of the product. Functions Multi-measurement • Currents - instantaneous: I1, I2, I3, In - maximum average: I1, I2, I3, In • Voltages & frequency - instantaneous: V1, V2, V3, U12, U23, U31, F • Powers - instantaneous: 3P, ΣP, 3Q, ΣQ, 3S, ΣS - maximum average: ΣP, ΣQ, ΣS • Power factors - instantaneous: 3PF, ΣPF 305 General Catalog UL/CSA Ed. 3 Metering • Active energy: +/- kWh • Reactive energy: +/- kvarh • Time table: Harmonic analysis • Total harmonic distortion (rank 51) - Currents: thd I1, thd I2, thd I3 - Phase-to-neutral voltage: thd V1, thd V2, thd V3 Phase-to-phase voltage: thd U12, thd U23, thd U31 Events Alarms on all electrical parameters Communications (1) RS485 with MODBUS protocol Output • Equipment control • Alarm report • Pulse report Input • Information report from a dry external contact (1) Available as an option (see the following pages). PLC Energy efficiency software Bi-directional metering DIRIS A-20 can measure the flow of electricity in both directions. Related software > To use Socomec PMDs effectively, we can offer you several dedicated software tools. See page xxx. DIRIS A-20 RS485 DIRIS A-20 DIRIS Digiware M-70 Functional diagram Strong points > User-friendly operation > Compliant with ANSI C12.20 and IEC 61557-12 > Detects wiring errors > Customizable Compliance with standards > UL 61010-1 CSA-C22.2 No. 61010-1 Guide PICQ File E257746 > ANSI C12.20 > IEC 61557-12
