Possible Test Procedures and test equipment
Our test facilities are capable of handling a large number of tests.
Our test equipment enables the 100% final inspection of all electrical parameters, as well as the safety-related tests. The equipment can be programmed to suit the test. J-Lasslop records the test data to ensure traceability.
Description: Continuity
Main application: All transformers
Usage of test: Properly installed fixture
Description: DC Resistence
Main application: All transformers
Usage of test: Properly installed fixture, Correct wire used, Integrity of terminations
Description: Inductance (Series circuit)
Main application: Most transformers but usually not line frequency transformers
Usage of test: Correct primary turns, Right grade of core material, Core correctly assembled
Description: Inductance (Parallel circuit)
Main application: Most transformers but usually not line frequency transformers
Usage of test: Correct primary turns, Right grade of core material, Core correctly assembled
Description: Qualiy factor
Main application: Most transformers but usually not line frequency transformers
Usage of test: Right grade of core material, Core correctly assembled, Check for shorted turns
Description: Equivalent series resistence
Main application: Most transformers but usually not line frequency transformers
Usage of test: Right grade of core material, Core correctly assembled, Check for shorted turns
Description: Dissipation factor
Main application: Most transformers but usually not line frequency transformers
Usage of test: Right grade of core material, Core correctly assembled, Check for shorted turns
Description: Leakage inductance
Main application: SMPS-transformers, Communication transformers, Others as applicable
Usage of test: Check windings have been installed in the correct position relative to the core
Description: Leakage inductance
Main application: SMPS-transformers, all transformers
Usage of test: Check windings have been installed in the correct position relative to the core
Description: Inner winding capacitance
Main application: High frequency transformers, all transformers
Usage of test: Check winding positioning, Check insulation thickness between windings
Description: Turns Ratio and Phasing
Main application: Most transformers but usually not line frequency transformers
Usage of test: Check windings have correct turns and phasing
Description: Turns Ratio and Phasing
Main application: Most transformers,As with Turns Ratio but used where there is poor flux linkage between windings
Usage of test: Check windings have correct turns and phasing
Description: Magnetising Current
Main application: Usually line frequency transfomers
Usage of test: Correct primary turns, Correct core material properly assembled
Description: Magnetising Current
Main application: Usually line frequency transfomers
Usage of test: Correct primary turns, Correct core material properly assembled
Description: VOCX (external source)
Main application: Usually line frequency transfomers
Usage of test: Correct secondary turns, Correct phasing
Description: Low voltage open circuit
Main application: Usually line frequency transfomers
Usage of test: Correct secondary turns, Correct phasing
Description: Insulation Resistence
Main application: All transformers
Usage of test: Winding isolation check where safety is not involved
Description: Surge Stress Test
Main application: All transfomers, especially those using fine wire
Usage of test: to identify shorted turns
Description: Inductance Match
Main application: SMPS, audio and telecom, transformers
Usage of test: Checks matching between windings
Description: Return Loss
Main application: audio und telecom, transformers
Usage of test: Checks losses returned by a transformer
Description: Impedance
Main application: audio und telecom, transformers
Usage of test: Checks impedance at a given frequency
Description: Leakage Current Test
Main application: medical applications
Usage of test: Checks for a common mode current due to capacitance