Acrel MID Certified AC 3*220V/380V Three Phase Bidirectional Electrical Measurement Energy Meters

Project			Performance Parameter
Specification			3 Phase 3 Wires, 3 Phase 4 Wires
Measurement	Voltage	Reference Voltage	3*100V, 3*380V, 3*57.7/100V, 3*220/380V
		Consumption	<10VA (Single Phase)
		Inpedance	>2MΩ
		Accuracy Class	Error ±0.2%
	Current	Input Current	3*1(6)A, 3*10(80)A
		Consumption	<1VA Single Phase Rated Current
		Accuracy Class	Error ±0.2%
	Power		Active, Reactive, Apparent, Power, Error ±0.2%
	Frequency		45-65Hz, Error ±0.2%
Metering	Energy		Active Energy (Accuracy Class 0.5) Reactive Energy (Accuracy Class 2)
	Clock		≤0.5s/d
Digit Signal	Energy Pulse Output		1 Active Photocoupler Output
Pulse	Width of Pulse		80±20ms
	Pulse Constant		400 imp/kWh, 10000 imp/kWh (Correspond With the Basic Current)
Communication	Interface and Communication Protocol		RS485: Modbus-RTU
	Range of Communication Address		Modbus-RTU: 1-247
Environment	Working Temperature		-25ºC-55ºC
	Relative Humidity		≤95% (No Condensation)

Acrel Co., LTD. (Stock code: 300286.SZ), established in 2003, is a high-tech joint-stock enterprise integrating research and development, production, sales and service, providing energy efficiency systems and electricity safety solutions for enterprises. Our company's solutions cover power, environmental protection, new energy, fire protection, data center, smart building, smart campus, smart hospital, smart factory, smart transportation, municipal engineering and other fields.
At present, the company has more than 14,000 sets of system solutions operating around the world, for users to escort efficient and safe energy use, for enterprises to save energy consumption and realize the digital construction of energy to provide data services.
As of December 31, 2021, the company has 5 trademarks and 299 patents obtained certificates, including 22 invention patents, 127 utility model patents, 150 appearance design patents and 252 software Copyrights.

Q:After the meter is powered on, the power or energy count is inaccurate.
A:Switch the meter display to the power (active power P, power factor λ) interface, and check whether the power display is negative or not. And whether the power factor is between 0.9-0.95, and then check whether the incoming and outgoing wires of the current signal wire are connected reversely (that is, the current The incoming wire must be the same as the incoming wire end of the instrument) and consistent with the wiring diagram on the instrument.

Q:The instrument cannot communicate with the host computer normally after power on.
A:1. The voltage value between the communication output A and B of the measuring instrument should be between +(4.4-4.5)V;
2. Check whether the communication wiring method is correctly wired in accordance with the wiring diagram requirements (that is, the communication terminal A/B of the corresponding to communication serial port A/B);