Name: AGF-M Solar PV DC String Monitoring Device
Brand: Jiangsu Acrel Micro-grid Research & Development Institute

Acrel AGF-M Solar PV DC String Monitoring Device

AGF-M solar PV DC string monitoring device is specially used in the intelligent photovoltaic confluence box to monitor the operating state of the photovoltaic cell array. It can measure the photovoltaic cell current, collect the state of the lightning protection device in the confluence box and collect the state of the DC circuit breaker and the relay contact output. With sensor interfaces such as wind speed, temperature, and irradiance meter, the device has an RS485 interface to upload the measured and collected data and equipment status.

Specification of AGF-M Solar PV DC String Monitoring Device

Parameters

Item	AGF-M4T	AGF-M8T	AGF-M12T	AGF-M16T	AGF-M20T	AGF-M24T
Input channels	4	8	12	16	20	24
Rated current	DC 0~20A
Response time	1s
Accuracy	0.5 class
Temperature coefficient	400ppm
RS485 communication	RS485/Modbus-RTU protocol, 4800/9600/19200/38400bps
Additional function
Switch input	3-way input(optocoupler or dry contact mode)
General technical parameters
Temperature/ Humidity	Working temperature: -35~+65℃, humidity95%,no condensation, no corrosion gas place *Display module work temperature: -20~+70℃
Temperature measurement function	To measure the inner temperature of the box （-20℃～100℃）
Altitude	≤3000m
Insulation resistance	≥100MΩ
Industrial frequency withstand voltage	power/communication/switching input/cell voltage input--AC 2kV/1min (When the auxiliary power supply is DC1500V, the withstand voltage between the power supply, photocell input and other circuits is AC 2.7kV) Current input/power, cell voltage, communication, switching state—AC3.5kV/1min
EMC	GB_T 17626.2-2006; Electrostatic discharge immunity test 3rd grade, air discharge 8kV, contact discharge 6kV.
	GB_T 17626.4-2008； Electrical fast transient immunity test grade 4, common mode 4kV, difference mode 2kV
	GB_T 17626.5-2008； Surge(shock) immunity test grade 4, common mode 4kV, difference mode 2kV
	GB_T 17626.8-2006； Power frequency magnetic field immunity test grade 4

Features of AGF-M Solar PV DC String Monitoring Device

It has a relay output, which can be set as a jog mode, used to drive the automatic opening and closing of the DC circuit breaker;

The on-site digital tube displays the input current of each channel in a cycle, and has an automatic shutdown energy-saving display mode;

It can be equipped with dual-channel RS485 interface, supports ModbusRTU communication protocol, and the communication address, baud rate, and data mode can be set freely.