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“Smart Power Monitor/Meter†High Performance Power Instrumentation The 3720 ACM is a microprocessor-based, digital 3-phase “Smart Power Monitor/Meter†designed for use in industrial, commercial, and utility power distribution switchboards and substations. The 3720 ACM answers the ever-increasing concern for ‘clean’, reliable power by integrating the many critical aspects of power monitoring, analysis, and control into one simple and economical instrument. It is a state of the art alternative to traditional analog electromechanical metering devices, replacing numerous individual transducers and meters, and offering many features previously unavailable in power instrumentation. The 3720 ACM offers the high accuracy, reliability, and ruggedness of its companion product, the successful 3710 ACM, while adding many new measurements and advanced features (see Figure 1.1.1). The 3720 ACM also matches the 3710 ACM in its mounting dimensions, installation requirements, and in its straightforward and flexible user interface. The unit is based around a 13.5 MHz, 16 bit microcontroller chip. This provides very high computational throughput, allowing the unit’s sophisticated software to process information in real time. The unit is self-contained and its readings and set up parameters are maintained in nonvolatile memory. An internal 16-bit CPU gives the 3720 ACM the processing capability to be used as a stand-alone power monitoring and control station or as a smart RTU in a large energy monitoring network. Easy Installation and Exceptional Ruggedness The 3720 ACM is panel-mountable and provides rearmounted, utility approved terminal strips rated at 600V. The 3720 ACM is exceptionally rugged, with a high tolerance to electrical disturbances and temperature extremes. Many special design features guarantee performance in electrically harsh environments. The voltage, current, status (digital), relay, supply power, and communications inputs are designed to withstand hipot, C37.90A SWC, and fast transient tests. The 3720 ACM transformer-coupled current inputs are fully isolated with respect to the chassis of the unit, and provide 300 Amp surge protection. Inputs and Outputs The 3720 ACM supports a variety of power distribution configurations, including 4-wire Wye, 3-wire Delta, and Single Phase systems. 3 phase voltage and 3 phase current inputs are provided, as well as an additional current input. In installations with non-linear loads, where odd harmonics can fail to cancel, significant currents in the neutral conductor can be produced. The 3720 ACM fourth current input can be used optionally for monitoring current in the neutral conductor, or for ground current monitoring. Used in conjunction with its high-speed setpoint system, the 3720 ACM can provide reliable ground fault protection. No intermediate transducers are required on phase voltage and current inputs. When equipped with the appropriate voltage input option, no PTs are required for Wye systems up to 347 VAC line-to-neutral / 600 VAC line-to-line. For higher voltage Wye systems, and all Delta systems, PTs can be used. The transformer-coupled current inputs accept CTs with 5 Amp full scale outputs. Overrange measurement options include 125% to 200%. RUGGED CARRYING CASE-MOUNTED - $600.00 4 - AEMC INSTRUMENTS MD304 AC CURRENT PROBE 10mA/A -600A MAX $199.00 EACH (Schneider electric power measurement 3720 acm was posted and is owned by: Charles Munoz) |
CMunoz@chicagopartsnetwork.com (Charles Munoz) for more information.
