Major repairing of 100KVA Transformer along with installation of 250KVA voltage Stabilizer at WSS Sarnoo Bridge.

Laying and Jointing PVC Pipe. Heading

Major Repairing of 100KVA electric sub station with replacement of worn out electro-mechanical equipments at pumping station Sarnoo Bridge. The job involves cutting the HT supply of 100 KVA electric transformer. Dismantling of HT/LT connections, lifting up the damaged transformer from the installed position with the help of chain pulley block and manual labour and stacking it at suitable place. Then shifting it from Site to workshop by way of loading in the vehicle with the help of manual labour there on dismantling/ disconnection the connections of HT bush set & LT bush rod and taking out simultaneously, scratching the old and damaged core sheets and other internal connections by using special tools and tackles, extracting out core of transformer using gas cutter thereby dismantling each limp of Aluminum wound HT coils, extracting HT coils from core and its damaged insulations and draining out all transformer oil from its chamber servicing , cleaning and flushing the oil tank by using chemical to clean all carbon deposits and plugging of leakages. Providing and fitting of new HT leg coils- 08Nos. and LT leg Coils- 03 Nos. in place of damaged HT and LT coils fabricated of enameled Aluminum wire of required gauge and also providing and fitting of HT & LT metal parts, silicate breather set of gasket, oil level gauge, LT terminal plate, sundry items and insulations, insertion of HT coils /LT coils and then making the internal connection of the coil to make star connections on LT side and delta connections of HT side by way of copper gas welding etc. placing the core in the oven for removal of any type of moisture and for getting megger value. Complete assembling of transformer, topping up of the new transformer, oil 250 Approximately. and then putting the transformer, on no load till required megger value is attained. Providing /fitting of AL cable 240mm sq 3 core from LT bush side of transformer to bus bar fuse system and then to LT pole. Providing /fitting of New LA set in place of damaged link set with nuts and bolts etc. The complete job includes cost of material and labour charges ,carriages charge at site of work.

Installation, testing & commissioning of 250 KVA servo voltage stabilizer. The job includes carriage of 250 KVA servo voltage stabilizer( to be provided by the deptt. ) by mechanical transport from Divisional Store by way of loading the same into the vehicle by using crane / chain block and manual labour & then unloading near the approachable site/ Stacking place and manual carriage from there of to pumping station Sarnoo Bridge by head load using wooden logs,roaps, and others tools and tackles. Placing it at appropriate place inside the pump room. Making input/output connection after inspecting the voltage stabilizer and checking the functioning of voltmeter, ampere meter, phase indicator, change over switches , MCCB, Servo motor and dimmer of the same. P/F of copper cable 16mm sq. from making connection from main Switch to voltage stabilizer upto control panel Job includes cost of material & labour charges for loading unloading carriage & fitting charges.

Rishabh Electricals and Mechanical Works

BEE AAR ENTERPRISES

Rishabh Electricals and Mechanical Works