3.3 Technical Description
3.3.1 Principle Description
PV string voltage is transmitted to DC BUS via BOOST circuit.
The MT series is equipped with four MPPTs for four DC inputs to ensure that the maximum power
is utilized even in different PV installation configurations.
DC / AC converter circuit converts DC power into AC power, which can be fed into the utility grid.
Protective circuits are designed to protect both the inverter's safety and human safety.
DC switch is integrated for safe disconnection of DC input. The inverter provides a standard
interface RS485 and Wi-Fi (optional) for communication. Inverters also provide a running recode
data display and parameter configuration via LCD panel or App.
Please refer to Chapter 6.2 to check the main block diagram.
3.3.2 Function Description
Inverter functions can be grouped as follows:
• Conversion function
Inverter converts DC power into ac power, which conforms to the grid requirement of its
installation country.
• Data storage and display
Inverter stores the running information and fault records, displaying them on the LCD screen or
App.
• Parameter configuration
Inverter provides various parameter configurations for optional operation.
• Communication interface
Inverter provides USB,Wi-Fi(optional) and standard RS485 communications interface.
• Protection functions
>Insulation resistance to ground surveillance
>Input voltage monitor
>Residual current monitoring unit
>Anti-islanding protection
>PV array string fault monitoring
>DC fuse
>DC switch
>DC SPD
>AC SPD
>SPD fault monitoring
>AC over current protection
>Insulation monitoring
3.4 Package
The unit is thoroughly tested and strictly inspected before delivery. Damage may occur during
shipping.
1. Check the package for any visible damage upon receipt.
2. Check the inner contents for damage after unpacking.
3. Check the package list below:
[1]Positive & Negative DC plug:
GW50KBF-MT-KR / GW60KBF-MT-KR / GW50KBF-MT 8 pairs.
GW30KLV-MT / GW50KN-MT 10pairs.
GW35KLV-MT / GW60KN-MT / GW60KBF-MT / GW70KHV-MT / GW80KBF-MT 12 pairs.
GW50KLV-MT / GW75K-MT / GW80KHV-MT / GW80K-MT 16 pairs.
Positive DC Plug[1]Inverter Wall-mounted Bracket Negative DC Plug[1] Connecting Terminal
Cover Plate on The
Bottom of Inverter
Fixed Screw
Grounding Screw &
Nut 6-Pin TerminalExpansion Bolt
Quick Installation
InstructionHexagonal ScrewWi-Fi/GPRS Module
Wi-Fi Configuration
Instruction
User's Guide of
SolarGo App
SolarGo
(Inverter Without
LCD)
07 08