Table of Contents
What is the chemical name of transformer oil?
Polychlorinated biphenyls are a man-made substance first synthesized over a century ago and found to have desirable properties that led to their widespread use. Polychlorinated biphenyls (PCBs) were formerly used as transformer oil, since they have high dielectric strength and are not flammable.
How much oil is in a 1000 kVA transformer?
1-2. 33kV – 400/230V
| Item | Capacity | Oil |
|---|---|---|
| kVA | Liter | |
| 8 | 630 | 550 |
| 9 | 800 | 700 |
| 10 | 1,000 | 750 |
What is BDV value?
BDV (Breakdown Voltage Test): Breakdown Voltage is measured by observing at what voltage, sparking straits between two electrodes emerged in the oil, separated by specific gap. Low value of BDV indicates presence of moisture content and conducting substances in the oil.
How is transformer oil manufactured?
The basic process for the manufacture of transformer oil consists of processing of Group II + base oils or equivalent mixed with special type of additives. Mineral Base oil at 650C is first dehydrated filtered through specially designed filters.
What is the weight of kVA transformer?
11-25 KVA Transformer
| Power | 25 kVA |
|---|---|
| Output Voltage | 415 V |
| Mounting Type | Floor Mount |
| Winding Material | Copper |
| Weight | 4 Tons |
What is BIS specification of transformer oil?
| Sr.No. | Test Properties | Specification |
|---|---|---|
| 1 | Appearance | The oil shall be Clear & Transparent & free from suspended matter or sediments |
| 2 | Density @ 29.5, °C, Max | 0.89 g/cm ³ |
| 3 | Viscosity, Kinematic | |
| a) | at 27°C, cSt | 27.00 |
What is transformer oil?
Transformer Oil is basically an Insulating Oil. Insulating Oils or Transformer Oils are mineral electrical insulating oils processed from fractional distillation and treatment of crude petroleum. An Insulating Oil must have the following properties: 1) Excellent dielectric properties resulting in minimum power loss.
How do you test the dielectric strength of transformer oil?
To determine dielectric strength, transformer oil is periodically tested by means of an oil punching apparatus. To test the oil sample, transformer oil is poured into a porcelain vessel in which two “disk electrodes,” one of 8mm diameter and one of 25mm diameter, are mounted. The distance between the electrodes is set at 2.5 mm.
What is the minimum breakdown voltage of transformer oil?
Dry and clean oil gives BDV results, better than the oil with moisture content and other conducting impurities. Minimum breakdown voltage of transformer oil or dielectric strength of transformer oil at which this oil can safely be used in transformer, is considered as 30 KV.
What is the transformer ratio formula?
The Transformer Ratio Formula for Voltage is as Follows, K= [frac{V_{1}}{V_{2}}] Where, V 1 = Primary voltage V 2 = Secondary voltage The Transformer Ratio Formula for Current is as Follows, K= [frac{I_{1}}{I_{2}}] Where, I 1 = Primary current. I 2 = Secondary current. Step Up Transformer Formula