A17-VY Three Phase Four Wire Electricity Meter

A three-phase four-wire direct-connected energy meter is an electricity metering device that connects directly to the power grid without the need for external current transformers. It is designed for low-voltage three-phase four-wire power supply systems and can accurately measure active energy, reactive energy, and both forward and reverse power consumption. The meter provides real-time data through an LCD display or communication interface. With its direct connection design, it offers simple installation and lower costs, making it widely used in residential electricity metering, commercial buildings, industrial distribution, and solar grid-tied systems.

Three Phase Four Wire Electricity Meter Direct Connection Feature

High-Precision Metering: Accurate metering complies with international electricity metering standards, ensuring long-term reliable operation.

Wide Range of Application: Wide voltage and current ranges make it suitable for a variety of industrial and commercial power environments.

Intelligent Communication: Supports RS485 and Modbus RTU protocols for remote meter reading and energy consumption monitoring.

Durable Display: The LCD display is clear and has a lifespan of over 12 years, making it suitable for harsh operating environments.

Three Phase Four Wire Electricity Meter Direct Connection

Product Parameters

Type	Three phase four wire electricity meter direct connection-A17-VY
Voltage
Nominal voltage Un	3x277/480VAC
Voltage range	0.8-1.15Un
Frequency
Nominal frequency fn	60 Hz
Frequency range	0.98-1.02fn
Current
Reference current Irer=Ib=10Ir	5A
Maximum current Imax	65A
Minimum current Imin	0.25 A
Starting current Ist	0.004I
Accuracy
Active	Class B in compliance with DIN EN 50470-1/3 Class 1.0 in compliance with IEC62053-21
Reactive	Class 2.0 in compliance with IEC62053-23
Measuring Energy
Two energy directions	+A/-A,+R/-R,
Reverse locking	+A,+R,
Meter constant
LED-Output	1000 imp/kWh,1000 imp/kvarh
Display
LCD	7 digit
Life cycle	>12 years
RS485-Data Interface
Connector	Two screws type
Parameter	9600/19200/38400 bps,8E1/8N1/8O1(parameters adjustable)
Communication protocol	Modbus RTU
Power Consumption
Voltage circuit	<2W/10VA at Un
Current circuit	<4VA at Ib
Temperature Range &Humidity
Typical Operation	-30℃ to+70℃
Storage	-40℃ to+85℃

FAQ

Q1: Is this a single-phase or three-phase meter?
A1: It is a three-phase four-wire energy meter, suitable for 3×277/480V AC grids.

Q2: What is the current and voltage range?
A2: Reference current is 5A, maximum up to 65A, with a voltage range of 0.8–1.15 Un.

Q3: What is the measurement accuracy?
A3: Active energy: Class B (DIN EN 50470-1/3), Class 1.0 (IEC62053-21); Reactive energy: Class 2.0 (IEC62053-23).

Q4: Does it support bidirectional measurement?
A4: Yes, it measures both import and export energy (+A/-A, +R/-R).

Q5: What communication interface does it support?
A5: Equipped with RS485, supporting Modbus RTU protocol.

Q6: How is the data displayed?
A6: It comes with a 7-digit LCD display, clear and easy to read.

Q7: What is the service life of the meter?
A7: The meter is designed for over 12 years of reliable operation.

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