|
|
| |
| QUALITY POLICY |
|
|
| We at JAY BEE INDUSTRIES are committed to do good planning and its execution through quality assurance and producing the right thing first time, time after to keep our customer delighted. |
|
|
|
|
| |
|
 |
Processing |
|
|
|
|
| CORE |
|
 |
Built up from prime high quality CRGO Silicon Stel Sheets in different grades of low loss material imported from countries like Japan, USA, Germany, France etc. |
|
The Churning out of par excellence product made possible because of inhouse facilities like slitting, shearing, punching, notching, deburring and annealing. |
|
|
 |
|
 |
|
Special care taken while processing to reduce burrs and minimise stresses developed while processing. |
|
Losses are reduced to minimum possible level for achieving better efficiency. |
|
Quality checks like Epstein Square Test, Insultation Resistance, Bending, Permeability done before using in transformers. |
|
|
|
Mitered joints to have better magnetic path, providing minimum relunctance. |
|
Core Assembly clamped properly with heavy steel structure to reduce noise level. |
|
Normally boltless construction provided to minimise the core loss. |
|
 |
|
|
| COILS |
|
|
Wound from annealed, electrolytic grade Copper/Aluminium conductors. |
|
Inhouse facility for wire/strip drawing and also for paper covered insultation. |
|
Aluminium / Copper rods are procured from Hindalco, Nalco, Balco, HCL etc. |
|
Electrical kraft paper is used for insulation. |
|
Sufficient cooling ducts provided to reduce temp. rise of windings, oil and hot spot. |
|
 |
|
|
|
Type of coil winding like helical, continuous disc, double disc, cross over coils etc. depends upon the rating and voltage class of the transformer. |
|
Coils are make without any joints. |
|
|
| CORE-COIL ASSEMBLY |
|
|
Electrical grade kraft paper, pre-compressed press board used for insulation. |
|
Coils are preshrunk before assembly. |
|
Clamping structure, ducts etc. designed to take care of short circuit forces and impulse voltages. |
|
On load/off circuit tap switches provided as per the requirements. |
|
Insultation resistance being built up by drying in the oven. |
|
 |
|
|
|
|
| OIL |
|
|
Dehydrated EHV grade mineral oil used for proper insulation and cooling. |
|
Tests for ageing characteristics like Tan-Delta, BDV, resistivity conducted before charging. |
|
|
| TANKS |
|
|
Surface cleared by chemical/shot or sand blasting with oil resistant Zinc chromate primer. |
|
Conservator, Cable Boxes, Rollers, Sealed/conventional type cover provided as per the ratings. |
|
Tested for pressure as well as vaccum. |
|
|
|
| TESTING |
|
|
Routine Tests like Measurement of Resistance, No Load Loss, Load Loss, Impedance, Turns Ratio, Separate Source voltage Test, Induced over Voltage Test, Temperature Rise Test are conducted as per IS:2026. |
|
Testing equipment calibrated regularly. |
|
 |
|
|
| |
|
|
|
|
|
