high voltage side call primary
transformer is busted; if input voltage is normal you have short circuit or open circuit somewhere
Definitely NOT! An open circuit (across a melted fuse for example) on the secondary side of a current transformer is subject to a dangerously-high voltage, so a fuse must not be fitted. The secondary side of a CT must never be open circuited.
A Linear power transformer coil? use an Ohm meter and check the resistance of the coils. No resistance is an open circuit. Also check for a cross circuit from one side of the transformer to the other.
In general, you can install a wattmeter on the primary or the secondary side of a transformer (it depends what you are trying to measure). But if you are conducting an open- and short-circuit test (to find the transformer's losses), then the wattmeter is connected to the primary side because you want to measure the total (primary + secondary) losses and that is only achievable from the primary side.
During open circuit test on transformer, no load is connected across the secondary side. Hence, the total power drawn by the transformer is only to induce the voltage across the secondary, i.e., core loss AND negligible amount of primary copper loss. As the primary copper losses during open circuit are negligible, it is practice to attribute the open circuit power to core loss.
transformer is busted; if input voltage is normal you have short circuit or open circuit somewhere
The supply is given on the high voltage side of transformer because the supply voltage required to circulate rated current through the transformer is usually very small So energy is saved.
Definitely NOT! An open circuit (across a melted fuse for example) on the secondary side of a current transformer is subject to a dangerously-high voltage, so a fuse must not be fitted. The secondary side of a CT must never be open circuited.
On the primary side of the high voltage transformer.
A Linear power transformer coil? use an Ohm meter and check the resistance of the coils. No resistance is an open circuit. Also check for a cross circuit from one side of the transformer to the other.
In general, you can install a wattmeter on the primary or the secondary side of a transformer (it depends what you are trying to measure). But if you are conducting an open- and short-circuit test (to find the transformer's losses), then the wattmeter is connected to the primary side because you want to measure the total (primary + secondary) losses and that is only achievable from the primary side.
yes,we can change the transformer side in transmission line as use of high current or high voltage in output.
During open circuit test on transformer, no load is connected across the secondary side. Hence, the total power drawn by the transformer is only to induce the voltage across the secondary, i.e., core loss AND negligible amount of primary copper loss. As the primary copper losses during open circuit are negligible, it is practice to attribute the open circuit power to core loss.
It could be described as an open circuit. If this is the case you won't have any voltage on the secondary.
Open circuit test on a transformer is usually performed to measure the IRON losses.Iron losses are produced due to eddy current and hysteresis losses. In open circuit test, the LV side, generaly the secondary winding, is kept open and the HV side, generaly the primary winding is fed with the rated voltage and frequency. The rated voltage is applied in order to setup normal flux in the transformer, which in return further produces the normal iron losses at rated voltage. the wattmeter connected at the primary side will show the power consumed due to iron losses. this calculation further utilized for determing the efficiency of transformer.
A no-load test is done with the normal supply connected in the way the transformer is intended to be used. It is also known as an open-circuit test to distinguish it from a short-circuit test, and its purpose is to measure the power loss in the iron core of the transformer and the no-load current drawn from the supply.
1)Short circuit test is performed at rated current. As the rated current on high voltage side is much less than low voltage side, so the rated high voltage side current is easily achieved compared to low voltage side. 2)Also because we cannot short circuit high voltage side, as, if we short circuit high voltage side, voltage of high voltage side essentially falls to zero and since VI=constant, so the high voltage side current will be very high and will burn the winding.