MT-AW-R

MT-AW-R

MT-AW-R

Product catalog summary
Overview
The MT-AW/R is a precision measuring transducer designed for AC current and active or reactive power measurement in both balanced and unbalanced load systems. It is suitable for use with 1A or 5A current transformers and provides precision true RMS measurements with class 0.5 accuracy for active power (Watt) and class 1 for reactive power (VAr). The device is not affected by waveform distortion and offers optional DIN96 slave indicators and fast analogue output signals.

Specifications
The transducer complies with EN 60255-27 Cat. III and EN 60255-26 standards, ensuring it meets major classification societies' requirements. It supports monitored voltages of 100-120V, 200-240V, 380-415V, 440-460V, and 480VAC at 40-70Hz, with optional separate AC or DC auxiliary voltage. The device features a supply tolerance of +10%, -20%, and a power rating of 5VA. It offers analogue outputs up to 20mA or 10V, with accuracy classes of 0.5 for Watt and 1 for VAr. The operating temperature range is -20 to +70ºC, with relative humidity up to 95%.

Features
The MT-AW/R includes a green LED to indicate auxiliary supply presence and provides noise-immune outputs isolated from CT and voltage inputs. It offers two fast analogue output signals proportional to AC current and power levels. The device is designed for applications requiring fast response and precision monitoring, such as load regulation and control on generators, motors, and inverters.

Connection and Models
The transducer supports various connection configurations, including single-phase and three-phase systems with balanced or unbalanced loads. It offers multiple models for different circuit configurations, such as MT-A1W2 for single-phase and MT-A3W4 for three-phase, four-wire unbalanced loads. The connection diagrams and ordering information provide detailed guidance on setup and model selection.

Ordering Information
When ordering, specify the type, auxiliary supply, input voltage, current range, and desired analogue outputs. Optional separate auxiliary supply options are available for both AC and DC configurations.
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Catalog excerpts

MT-AW-R-1

MEASURING TRANSDUCER - AC CURRENT, ACTIVE OR REACTIVE POWER MT-AW/R • Combined AC Current (A), Active Power (Watt) or Reactive Power (VAr) Transducer for balanced or unbalanced load • Precision true RMS class 0,5 (Watt) and class 1 (VAr) measurement, not affected by any waveform distortion • For use with 1A or 5A current transformers • Up to two individual very fast analogue output signals (<50mS), (optional) • DIN96 Slave Indicators with full scale (optional) Specifications Monitored Voltage: The digitally controlled MT-AW/R is a precision transducer for AC Current and balanced or unbalanced load system active (Watt) or reactive (VAr). To be used in applications that require a very fast response, precision monitoring of active or reactive power. Ideal for systems for regulation and control of the load on generators, motors and inverters. The unit measures the voltage and current true r.m.s. value, and accuracy is independent of any wave form distortion. Agreen LED (ON) indicates the auxiliary supply presence. Optional Separate Auxiliary Voltage DC: Supply tolerance: Power rating: Current Input: Analogue output 1: (Any % of CT range) Two individual very fast analogue output signals proportional to AC Current (A) and the measured ActivePower (Watt) or Reactive Power (VAr) level. (see page 3 for an overview of models). If an output is used for remote meter reading, we recommend 0-1mAfor the slave indicator. Analogue output 2: (Watt or VAr range) It also includes an additional RJ12 output for a DIN96 Slave Indicator (optional). (other on request) (see page 3 for available outputs) The noise-immune mA output is isolated from both the C.T. and voltage inputs and auxiliary power. Accuracy: Temperature: Humidity, relative: Weight: Front protection: Flammability: The standard models takes the auxiliary supply voltage from the monitored voltage (terminal 1 & 2). It can also be delivered with optional separateAC or DC auxiliary voltage (terminal 26 & 27), but that must be specified when ordering (see page 3 for ordering code for separateAux. Supply). The unit meets EN 60255-27 Cat. III, Pollution degree 2 and the relevant environmental and EMC tests specified in EN 60255-26 to comply with the requirements of the major Classification Societies. Norway Denmark United Kingdom www.megacon.com ELECTRONIC CONTROL AND INSTRUMENTATION Page: 1 of 3 REF: Datasheet.MT-AW/R - REV: 1.00/04.2021 © All rights reserved to Megacon Megacon reserves the right to make any changes to the information at

 Open the catalog to page 1
MT-AW-R-2

MEASURING TRANSDUCER - AC CURRENT, ACTIVE OR REACTIVE POWER MT-AW/R Connection Diagram Connection Diagram Separate AC or DC Aux.Supply (Optional) Monitored Voltage (*Note) Separate AC or DC Aux.Supply (Optional) Monitored Voltage (*Note) Optional earth connection Optional earth connection Com. cable to slave indicator + - + Analogue Analogue output 1 output 2 (A) (Watt or VAr) Com. cable to slave indicator Com. cable to slave indicator + Analogue output 2 (Watt or VAr) Com. cable to slave indicator Optional DIN96 slave indicators Optional DIN96 slave indicators MAI96E Connection Diagram Connection...

 Open the catalog to page 2
MT-AW-R-3

MEASURING TRANSDUCER - AC CURRENT, ACTIVE OR REACTIVE POWER MT-AW/R Model Overview Analogue Output AC Current (A) and Active Power (W) 1 element, single phase 1 element, 3 phase, 3 wire, balanced load 1 element, 3 phase, 4 wire, balanced load 2 element, 3 phase, 3 wire, unbalanced load 3 element, 3 phase, 3 wire, unbalanced load 3 element, 3 phase, 4 wire, unbalanced load The output signals are proportional to the meter reading. The signal is specifically intended as an input to a control system for monitoring or control. Add suffix from table below to type designation to specify output required:...

 Open the catalog to page 3

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.