
Eastron SMART X72-5F User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: sales@eastrongroup.com
Application
SMART X72-5F is a top new-generation intelligent multifunction panel meter, used not only in the electricity
transmission and power distribution system but also in the power consumption measurement and analysis in low
and medium voltage intelligent power grid.
This document provides operating, maintenance and installation instructions for the Eastron SMART X72-5F. The
unit measures and displays the characteristics of single phase two wire, three phase three wire and three phase
four wire supplies. Including voltage, frequency, current, power, active and reactive energy, imported or exported
energy, harmonic, power factor, Max. demand etc. Energy is measured in terms of kWh, kVArh. Maximum demand
current can be measured over preset periods of up to 60minutes. The requisite current input(s) are obtained via
current transformers.
The SMART X72-5F can be configured to work with a wide range of CTs, giving the unit a wide range of operation.
Built-in interfaces provide pulse and RS485 Modbus RTU outputs.
PART 1 Specification
Input
Norminal input voltage 50-276V AC(L-N) 87-480V AC(L-L)
Max.short duration input voltage 2x nominal voltage for 0.5 second
Nominal input voltage burden < 0.2VA per phase
Nominal input current 1A/ 5A
Nom. input current burden < 0.1VA
Max. continuous input overload current 120% of nominal
Max. short duration input current 20x nominal current for 0.5 second
Starting current 0.08% Ib
Auxiliary Power Supply
Operating range 65-276V AC/ 90-380V DC
Supply burden <2W/ 10VA