Before leaving the LINGFRAN factory, every transformer must pass a series of rigorous tests, performed with advanced equipment, on a range of measurements.
(1) Appearance – visual check.
(2) Winding resistance.
(3) Insulation impedance.
(4) Voltage ratio. Phase angle displacement.
(5) Short circuit impedance and load loss.
(6) No load loss and current.
(7) AC voltage regulation.
Below are part of our testing instrument.