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Description

A two chip solution, consisting of AT73C500 and AT73C501 (or AT73C502), offers all main features required for the measurement and calculation of various power and energy quantities in static Watt-hour meters. The devices operate according to IEC1036, class 1, specification. IEC 687, class 0.5 and 0.2 requirements are fulfilled when used with external temperature compensated voltage reference.

Features

? Fulfills IEC 1036, Class 1 Accuracy Requirements

? Fulfills IEC 687, Class 0.5 and Class 0.2 Accuracy, with External Temperature Compensated Voltage Reference

? Simultaneous Active, Reactive and Apparent Power and Energy Measurement

? Power Factor, Frequency, Voltage and Current Measurement

? Single and Poly Phase Operation

? Three Basic Operating Modes: Stand-Alone Mode, Microprocessor Mode and Multi-Channel Mode

? Flexible Interfacing, 8-bit Microprocessor Interface, 8-bit Status Output and Eight Impulse Outputs

? Calibration of Gain and Phase Error

? Compensation of the Non-Linearity of Low Power Measurement

? Adjustable Starting Current and Meter Constant

? Measurement Bandwidth of 1000 Hz

? Tamper Proof Design

? Single +5V Supply