What is tap changer in locomotive?
The single phase high voltage tap changer is used to notch the control winding on the high voltage side of the transformer up and down through 32 steps. The tap changer is directly built on the transformer, the selectors and circuit breakers together form a constructional unit.
What is the function of tap changer?
The purpose of a tap changer is to regulate the output voltage of a transformer by altering the number of turns in one winding and thereby changing the turns ratio of the transformer.
What is Oltc?
On-load tap changer (OLTC), also known as On-circuit tap changer (OCTC), is a tap changer in applications where a supply interruption during a tap change is unacceptable, the transformer is often fitted with a more expensive and complex on load tap changing mechanism.
Why do we use tap changer in primary side of transformer?
The tap changer of the transformer performs this task to change the turn’s ratio. The tap changer basic function is that it removes or connects some portion of the winding to the load side or source side.
What is the disadvantage of autotransformer?
The main disadvantage of an autotransformer is that it does not have the primary to secondary winding isolation of a conventional double wound transformer. Then an autotransformer can not safely be used for stepping down higher voltages to much lower voltages suitable for smaller loads.
What is Arno in loco?
Arno Convertor This is a rotary convertor which has a combined set of windings and is used to convert the single phase supply from the Tertiary winding of the Loco transformer to Three-Phase AC which is fit for use by the various Auxiliary machines in the loco.
What is traction transformer?
Traction transformer is an electrical device which is used in designing and manufacturing of railway system. It transfers the energy from one circuit to another through electromagnetic induction. It substituted the traction system run by fossil fuels years ago. It acts as an integral part of electric traction system.
What is Octc in transformer?
Off Circuit Tap Changer (OCTC means a device provided on high voltage side of transformer, which is used for variation of voltage during OFF condition of the transformer.
What is OSR in transformer?
The protective Oil Surge Relay (OSR) is used to protect the malfunction developed inside the On Load Tap Changer (OLTC). It is installed in the pipe between OLTC head and oil conservator. Any malfunction builds pressure which leads to increased oil flow.