Testing

Testing is carried out in our well-equipped state-of-the-art testing facility. Impulse tests are carried out in house using HAEFELY 800kVp impulse generator.

Tests carried out at ETS

Routine tests	Optional Tests
Measurement of winding resistance	Measurement of winding resistance
Measurement of voltage ratio and verification of vector connection	Measurement of voltage ratio and verification of vector connection
Measurement of load losses and short-circuit impedance	Impulse test including application of chopped waves
Measurement of no-load loss and magnetizing currents	Additional dielectric tests including partial discharge measurement
Dielectric tests as specified by standards (applied high voltage test and induced over-potential test)	Measurement of Zero-sequence impedance
Test on on-load tap-changers as appropriate	Measurement of noise level
	Measurement of harmonics of magnetizing currents
	Measurement of auxiliary power consumption

Manufacturing Process