Below is the list of some important transformer tests which are conducted on site before final testing and commissioning is planned. Insulation resistance test In this test the insulation resistance is measured by applying appropriate voltage across the terminals as mentioned below: HV to Earth+LV and ground is measured with 5kV test voltage LV to… Read More »
Prior to commencement of transformer installation work, all shop drawings will be processed and submitted for approval by consulting engineer. Shop drawings will include front and side views of the equipment, overall dimensions, components identity, components type and ratings, electrical characteristics, incoming and outgoings location details among others. Plant and Equipment Following equipment and tools… Read More »
Below is given a brief method statement for Installation of Isolated Power Supply units or also called IPS Units. Pre installation requirements before commencing the installation work at site are: Operative to attend any site induction provided by the client. Check the power cables and earth cable sizes are done as per approved drawings. Conduits,… Read More »
As you are familiar with the principle of a DC motor or DC machine that when it is loaded either as a motor or as a generator, conductors of the rotor are carrying the current. To better understand the concept, imagine the conductors which are laying in the magnetic field which is present in the… Read More »
What is a DC Shunt Motor? The shunt wound DC motor falls under the category of self excited DC motors, where the field windings are shunted to, or are connected in parallel to the armature winding of the motor, as its name is suggestive of. And for this reason both the armature winding and the… Read More »
LDR or Light Dependent Resistor which is also known as photo resistor is a device whose resistivity is a function of the incident electromagnetic radiation. SO we can say that these are light sensitive devices. Other terms which are used for LDR are photo conductors, photo conductive cells or simply photocells. Light dependent resistor (LDR) or… Read More »