In the motivating work of [PERSON] and [PERSON], on the electrical faults diagnosis through the lightning impulse voltage, PD was artificially emulated with the help of 'Diacs' in an 'un-tanked disc winding assembly', and its diagnosis was successfully demonstrated [19]. [PERSON] et al. discussed the usefulness of the test results in the frequency domain with oscillating impulses, during the detection of the partial discharges within transformer insulation [20]. [PERSON] discussed the effect of impulse voltage on the PD parameters [21]. From the above mentioned experimental works, it is clearly evident that the sources of PD offer the loading effects.Various simulation and experimental investigations were attempted for detecting the PD with non-conventional approaches [22; 23; 24]. Simulated and real-time winding models of transformers/rotating machines and un-tanked transformer windings were used as the test specimens. In these works, PD test at power frequency was not focused. Instead, Square/Chirp pulses, impulses, and PD pulses from PD calibrators were injected purposefully, as the test signals into the transformer windings (which are viewed as PD pulse equivalents for experimental purpose) [22; 23; 24]. The travelling wave-based approach was investigated in both the time domain and frequency domain. It has been used in order to identify the single/multiple PD diagnosis and PD location. Under emulated PD conditions, the test specimen was found to offer a change in its responses to such test signals. However, these works were carried out on the transformer winding models. The influences of core, tank, full sets of LV and HV windings, and bushings in a practical transformer on the wave shape and frequency components of the test signal were not considered. From the literature, it understood that the implementation of IFRA with a proper magnitude of voltage and a broad frequency spectrum could be useful for diagnosing PD in transformer. To check the viability of IFRA in PD diagnosis, an experimental work has been carried out at the HV lab of SASTRA, on a three-phase, 315 kVA, 11 kV/433 V, Dyn 11, Oil Natural Air Natural (ONAN) distribution transformer. This transformer has tappings on one of its 11 kV disc windings. These tappings are available at the sidewalls of the tank for external connections through the suitable low capacitance bushings, which is not altering the transformer electrical circuitry. During earlier research works, preliminary experiments have been conducted before and after the inclusion of these bushings. It has been confirmed that their loading effects during the impulse voltage performance of the transformer were negligible [25]. Inter-turn shorts and PDs can be artificially created using these tappings of the transformer winding without causing any permanent damage to the insulation. In the present work, some inter-turn shorts and potential sources of PD are artificially emulated while using these externally brought tappings of the winding. The inter-turn short is modelled by connecting a low ohmic resistor across the tappings. For the PD diagnostic tests, the PD source is modelled while using an oil gap of 2 mm, such that the loading effect during its discharge-free condition on the impulse response of the transformer is negligible. For the diagnosis of full transformer, the windings in the HV side/LV side needs to be tested one by one. The present work is only focused on the testing methodology. The faults are only emulated on the (1U-1V) winding. The circuit connections and test procedures are explained in the methodology section. Switching impulse voltage is injected as the test signal at the '1U' terminal of the transformer winding and the voltage transferred to the other end of the winding is observed as the response. For the diagnosis of inter-turn shorts, tests are conducted at low voltages. For analyzing the usefulness of IFRA in diagnosing the presence of potential sources of PD, the inter-turn shorts are removed and the PD model is included.