It is mostly used in maintenance department. The maintenance engineer inspects the plant periodically under working condition and when it is rest, with good planning and preparation. The planning of maintenance is categorized in following ways- Routine maintenance Periodically maintenance Maintenance of fault when fault occurs Routine maintenance- It should Read more…
A relay is a device that opens or closes an auxiliary contact under some predetermined condition in the main circuit. It also provides complete electrical isolation between the control circuit and power circuits. Main parts of relay are armature contacts and coil. it has normally open (NO) contact which can Read more…
Oil conservator It is a drum shaped cylindrical vessel mounted on the top of the transformer. it is connected to a pipe to the transformer tank containing oil. the oil expands and contracts to depend upon the heat produced and the oil level in the conservator rises and fails. so, Read more…
Drying of oil- If the dielectric strength of oil is low, then the oil is treated in a filtering plant and drying plant will increase its dielectric strength. The oil should be drawn from near the bottom and deliver back into the transformer tank at the top. This process is Read more…
Preventive maintenance means proper maintenance. It consists of process to grow before breakdown and prevent them before they occur. Basically the function of this section is Periodic visual inspection of various equipment to locate condition leading to break down. Repair defects at their initial stages. To attain major breakdown and Read more…
Basically there are 3 types of maintenance- Corrective maintenance Preventive maintenance Contracted maintenance Corrective maintenance is done when an equipment fails or doesn’t work satisfactorily. Preventive maintenance is carried out to reduce the failure of equipment to minimum. In contracted maintenance contact terms are agreed by the supplier of the Read more…
The following factors are taken into consideration at the time of installing transformers. Proper foundation- The foundation must be strong enough to bear the load of transformer without any vibration and must be made with proper floor label and plinth label. The label of concrete plinth should be above the Read more…