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