Answer / virendra1981

Dear friend,

In routing maintenance you should take care of the
following .

Daily .

1. Percentage loading of a transfomer
2. Make sure the bucholze realy is full with oil no inert
gas is there if there then purge the same.
3. Check the record the Reading of OT & WT
4. Check manualy for any leakage from any part of the
transformer.
5. Check for any abnormal heating & noice in transformer.


Quarterly.

1. Check & change the silica gel of the breather .
2. Check teh Safety function tripping of HT breaker related
to transformer. ( tripping point of OT , WT & Tranfomer )

Annualy.

1. Check & fillter the Trasformer oil
2. with complete shut down take the reading of insulation
resistance of the transformer winding.
3. Open & check the condition of transformer HT & LT
bushing for any cracks or damage.
4. Chceck the condition of the earthing pit & take the
earthing resistance value for all the earthing pit (
Neutral & Body earth )

Do the same as directed & have a trouble free operation of
the transformer for a long period of time

What is q factor?

0 Answers  

---

Residual voltage & residual current used in which protection?

5 Answers   Qatar Gas, Reliance, Transformers and Electricals,

---

what types of electrical & mechanical test conducted in switchyard?

0 Answers  

---

what is O.T?specify the acceptable range?

2 Answers  

---

what is the diffference between 3 point and 4 point starter ?

3 Answers  

---

---

what gas is present in incandescent and florescent bulbs

4 Answers  

---

what do you mean by PF correction. A motor is rated at 15 kw,415 volts, 0.7 pf and eff of 0.92. The powerfactor is improved to 0.98 by adding capacitors at the bus. calculate the current drawn by motor under full load condition before and after pf correction

5 Answers  

---

can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?

0 Answers  

---

Dear Sir, I willing to know if one 15Hp induction motor run in star connection. What happen power capacity of motor? Plz tell me.

1 Answers   Amtek Tekfor Automotive,

---

what will happen if 11KV is given to 1.5 square mm cable connected with constant load of 10A ?what will be the condition of cable after injecting the voltage?

1 Answers  

---

What is meant by rating error prevention in breaker??

1 Answers   L&T,

---

what should be the spaciing between street lights designed for a manufacturing location. any IS codes?

0 Answers  

---