The Inverterless ATE is an automatic test equipment which is used to test the all functional and various test conditions of Inverterless Solar Unit. This ATE shall be a GO/NOGO Tester for Inverterless Solar Unit. All production units can be tested with this ATE for functional testing and clearance. This ATE reduces the man effort for quality checks and detects the failure units. The Inverterless ATE can check the UUT with minimum user interactions. It shall test and generate test report in PDF format for the conducted tests with necessary data. The ATE operates on 230V AC power. The ATE has In-Built AC-DC converter which provides 12V DC for operate the unit. Also it has additional AC-DC converter to simulate solar power to the Inverterless units. The main objective of the ATE is to test the Inverterless S in all possible test scenarios without external test equipments and less user interactions.