Name: AGF-M12T Solar DC String Monitoring Device
Brand: Jiangsu Acrel Micro-grid Research & Development Institute

Acrel AGF-M12T Solar DC String Monitoring Device

The intelligent photovoltaic confluence box specifically uses the AGF-M12T solar PV DC string monitoring device to keep track of the state of the photovoltaic cell array's operation. It has the ability to measure the photovoltaic cell current, gather data on the state of the confluence box's lightning protection device, the DC circuit breaker, and the relay contact output. The device features an RS485 interface with sensor interfaces for wind speed, temperature, and irradiance meter to upload the measured and gathered data as well as equipment status.

Specification of AGF-M12T Solar 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-M12T Solar DC String Monitoring Device

To operate the automatic opening and closing of the DC circuit breaker, it features a relay output that may be configured in jog mode;

The on-site digital tube shows the input current of each channel in a cycle and features an energy-saving display option that shuts off automatically;

It is capable of having a dual-channel RS485 interface, supports the ModbusRTU communication protocol, and allows the user to flexibly adjust the communication address, baud rate, and data mode.