Smart Power Meter-Jiangsu Lafaelt Electric

Description

Advantages

Parameters

Selection

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Overview

The LT860 series products consist of two categories: single function power measuring meters and multifunctional power measuring meters. This series of meters can measure power parameters such as current, voltage, power, power factor, and electrical energy, and also have harmonic measurement function. The measurement results are directly displayed through the LCD screen. It also has various expansion functions: RS485 communication, switch input, switch output (can be set for alarm or remote control), electrical pulse output, and multi-channel analog output.

This series of meters can directly replace auxiliary units such as power transmitters and measurement indicating meters. Through the selection of functions and expansion modules, digital communication, transmission, and remote control functions can be achieved. It has been widely used in various power equipment such as switchgear and DC screens, and been integrated into various control systems, SCADA systems, and achieved energy management.

Function Description

Model

DC current

DC voltage

AC current

AC voltage

Active power

Reactive power

Power factor

Frequency

Active energy

Reactive energy

Apparent power

Dimension

Phase

LTA860-A

√

1-96*96

4-72*72

3-Three- phase three- wire

4-Three phase four wire

LTZ860-A

√

LTS860-A

√

LTX860-A

√

LTP860-A

√

LTT860-A

√

LTD860-B

√

LTD860-D

√

LTD860-E

√

LTD860-F

√

LTD860-G

√

LTD860-H

√

LTD860-J

√

LTD860-M

√

LTA860-Z

√

1-96*96

4-72*72

5-48*48

1-Singl-e phase

LTZ860-Z

√

LTA860-A

√

LTZ860-A

√

LTS860-A

√

LTX860-A

√

LTP860-A

√

LTT860-A

√

LTD860-B

√

LTD860-D

√

LTD860-F

√

LTD860-G

√

LTD860-J

√

LTD860-M

√

Advantages

1. Real time analysis of power quality, displaying the total harmonic distortion rate (THD) and sub harmonic (31st) content of each phase voltage and current.

2. Customizable multi-rate function.

3. Some chips are imported from the United States and Japan. The shell is made of advanced flame-retardant ABS material from Taiwan;

4. Optional waterproof function for the panel;

5. Large display area, full viewing angle, and adjustable backlight lighting time

6. PT, CT and other parameters can be set on site;

7. Passed EMC electromagnetic compatibility test (reaching severity Level 4)

Technical Parameters

Features			Parameters
Input Signal	Voltage	Phase	Single-phase, Three-phase three-wire, Three-phase four-wire
		Rated Value	AC 57.7V, 100V, 220V, 380V
		Overload	Continuous for 1.2 times rated value, 2 times rated for 60S
		Consumption	<1VA (each phase)
		Impedance	>100kΩ
		Accuracy	True RMS measurement, precision level 0.5, (can be customized level 0.2)
	Current	Rated Value	AC 1A, 5A
		Overload	Continuous for 1.2 times rated value, 10 times rated for 1S
		Consumption	<0.4VA (each phase)
		Impedance	<200mΩ
		Accuracy	True RMS measurement, precision level 0.5, (can be customized level 0.2)
Measurement Display		Frequency	45~65Hz, error range ±0.05Hz
		Power	Active power, reactive power, apparent power, accuracy level 0.5
		Electric Energy	Forward and reverse electric energy metering, the accuracy of active energy is 0.5, and the accuracy of reactive energy is 1.0
		Display	LCD screen display, backlight lighting time and cycle display time can be set, automatic range switching
Auxiliary Power Supply		Working Range	AC/DC 85~265V
Auxiliary Power Supply		Consumption	≤5VA
Expansion Function		Interface	RS485, MODBUS-RTU protocol
		Switching Interface	DI input, DO output, (DO can be set as limit exceeding alarm or remote control output)
		Pulse Output	2 channels electrical energy pulse output, pulse constant 10000imp/kWh
		Transmission Output	DC 4~20mA, level 0.5
Environment		Working temperature	-10~50℃
		Extreme working temperature	-20~60℃
		Storage Temperature	-40~70℃
		Correspond Humidity	Annual average<70%, sometimes reaching 85%, without corrosive gases
Safety		Withstand Voltage	>2kV between input, output and power
Safety		Insulation	The casting of input, output and power >100MΩ
Dimension and Installation		Size (WHD)	969684mm
			727284mm
			484890mm
		Screen	LCD
		Installation	Plug in and fixed type