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General information


Name:	ellenyuan
Location:	Anyang City
Hobbies:	Reading
Title:	Coward ( # of posts 0 )
Date registered	01.18.2019
Date of birth:	23. October 1988
Last online:	Fri Jan 18, 2019 9:42 am
Sex:	female
NeoUsername:	ellenyuan

Contact


Homepage:	http://www.ohtradestar.com/
E-mail	ellen@ohtradestar.com

Description
Anyang Ouhan Trade Co.,ltd , which is located in the center of China, Henan Province, is specializing in export many kinds of energy meters, such as led multi-function digital meter, lcd multi-function programmable digital meter, three phase ampere meter and voltage meter, single phase digital meter and shunt resistor etc.
Input signal of LCD multi-function LCD digital display instrument：
The product adopts the calculation method of separate collection of each measurement channel, which ensures the use is completely consistent and symmetrical. It has multiple wiring modes and is suitable for different load forms.
Description:
A. Voltage input: The input voltage should not be higher than the rated input voltage of the product (100V or 400V). Otherwise, the PT should be considered and a 1A fuse must be installed at the voltage input.
B. Current input: The standard rated input current is 5A. If it is greater than 5A, external CT should be used. If other instruments are connected to the CT, the wiring should be connected in series. Before removing the current input connection of the product, you must first disconnect the CT primary circuit or short circuit the secondary circuit. It is recommended to use the terminal block, not directly connected to the CT, in order to facilitate disassembly.
C. Make sure that the input voltage and current correspond, the phase sequence is the same, and the direction is the same; otherwise, the value and symbol error will occur! ! (power and power)
D. The configuration of the meter input network is determined according to the number of CTs of the system. In the case of two CTs, the three-phase three-wire two-element method is selected; in the case of three CTs, the three-phase four-wire three-element method is selected. The input network NET set in the instrument wiring and instrument programming should be consistent with the wiring of the measured load, otherwise the voltage or power measured by the meter will be incorrect. Among the three-phase three-wire, the voltage is measured and displayed as the line voltage; and in the three-phase four-wire, the voltage measurement shows the phase voltage.