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1. General Information
SPM91 DIN rail energy meter is a kind of new style single phase whole electronic type
meter. The meter is completely conformed to the relative requirements of the International
Standard IDT IEC 62053-21:2003 (Class 1). It is an integration of up-to-date
micro-electronics technique, special large scale integrate circuit, advanced technique of
digital sampling technique and SMT techniques etc.
SPM91 is used for measuring active energy, voltage, current, active power, reactive
power, apparent power, power factor, input active energy, output active energy, input
reactive energy, output reactive energy, total active energy, total reactive energy in a rated
frequency of 50Hz or 60Hz single phase alternating current circuit. It displays total active
energy, voltage, current, active power via LCD and is characterized with good reliability,
compact size, light weight, specious nice appearance and easy installation.
2. Features
35mm DIN installing, in accordance with Standard DIN ED50022
High accuracy, active energy accuracy up to class 1
Measure and display V, I, P, kWh value
6+1 digits LCD display (999999.9 kWh)
Passive pulse output, output signal is in accordance with Standard DIN43864
LED indicates pulse
Key-press for local parameter setting
RS485 communication port, Modbus protocol
Support DLT645-2007 communication protocol
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