Some important Indian Standards related to Transformer are as follows:
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1 Some important Indian Standards related to Transformer are as follows: * Specification for Power Transformers. IS2026 ( Part I to IV ) * Specification for outdoor Three Phase Distribution Transformerupto and IS 1180 Part ( I & II ) Including 100 KVA,11 KV. * Specification for dry type Transformer. IS * Specification for Control Transformer For switchgear and control gear for IS Voltages not exceeding 1000 V A.C. * Specification for Current Transformer. IS 2705 ( Part I & II ) * Specification for Voltage Transformer. IS 3156 ( Part I to IV) * Classification of Insulating materials For Electrical machinery and apparatus IS 1271 In relation to their thermal stability In service. * Degree of protection provided by Enclosures for low voltage switchgear IS 2147 And control gear. * Specification fon New Insulating Oil IS 335
2 In-house Testing: All INDUSREE make Transformer are used to carry out the minimum required tests on the transformer ( as per Indian Standard ) as follows: 1. Insulation Resistance Test. 2. Winding resistance test. 3. No load loss test. 4. Ratio, Polarity & Phase relationship test. 5. Load loss test. 6. No load loss test. 7. Pressure Test. 8. DVDF test. 9. High voltage test. 10.Vector group test in case of Three phase Transformer. 11.Measurement of impedance Voltage. 12.Oil BDV test for Oil Cooled transformer. 13. Temperature Rise Test by Impedance Loading method. Sound Levels: All Indusree make Transformers are satisfactorily meet the ANSI Standard C89.2 and NEMA ST -20 sound levels and will not exceed as following table : KVA Max.Sound Levels Upto 9 KVA 40 db KVA 45 db KVA 50 db KVA 55 db KVA 60 db
3 Class of Insulation: We are using excellent insulating materials like Nomex, Glass, Film etc which are strong enough and better in dielectric strength, as a result we can increase the maximum allowable temperature resulting the overload strength is strong specially in case of Dry type Transformer. We are maintaining the maximum temperature rise limited to the previous class of insulation,such as if we claim class of insulation H, temperature rise will be limited to class of F ( usually we consider ambient temperature as 45 Deg.C. if not specified by the client). As per IS and other International Standard Tempt.Class Max.Total Temperature Of Insulation A E B F H C 105 Centigrade 120 Centigrade 130 Centigrade 155 Centigrade 180 Centigrade 180 Centigrade above
4 List of Machineries. NAME OF THE MACHINERIES Quantity. WINDING DEPARTMENT : 1. H.T.COIL winding Machine. Make - Ghosh & Co. 4 Nos. 2. H. T. COIL Winding Machine ( Automatic ). Make P.C.Ghosh & Co. 1 No. 3. C. N. C. Coil Winding Machine. Make Vector. 1 No. 4. C. N. Toroidal Coil Winding Machine. Make - Vector 1 No. 5. D. C. Drive Operated ToroidalCoil Winding Machine. 1 No. 6. L.T.Coil Winding Machine. P.C.Ghosh & Co make 2 Nos. 7. Wire Strip Brazing Transformer ( Self Made). 2 Nos. CORE LAMINATION DEPARTMENT : 1. Shearing Machine 4 ft. 1 No. 2. Ball Press for Punching ( 4 NO & 5 NO 2 Nos. 3. Core Cutting Die for Core of Different Sizes 20 Nos. FABRICATION & MAINTENANCE DEPARTMENT : 1. Power Driven Drilling Machine. (Bench) 1, 1/2 2 Nos. 2. Power Driven Hand Drill Machine. 1/2, 1/4 3 Nos. 3. Gig Saw Machine. 1 No. 4. Power Driven Bench Grinding Machine 2 Nos. 5. Welding Transformer 200 Amps. ( Self Made) 2 Nos. 6. Power Driven Hydraulic Hacksaw 1 No. ASSEMBLING DEPARTMENT : 1. Vacuum Impregnation Plant. 1 No. 2. Electric Heat Chamber. (Big, Medium & Small.) ( Self Made) 3 Nos. 3. Oil Storage Tank 1 No. 4. Oil Filling Pump. 1 No. 5. Hot Air Blower Cum Vacuum Cleaner 1 No. 6. Manual Shearing Machine 1 No. MATERIAL HANDLING DEPARTMENT : 1. Chain Pully 3 Tone. 1 No. 2. Chain Pully 1.5 Tone. 1 No. 3. Mechanical Arrangement. (For Lifting Material Using Chain Pully) 1 No. 4. Crimping Tools. 3 Nos. 5. Different Moulding Die for Cast Resin. 6 Nos. MISCELLANEOUS MACHINERY : 1. Petrol Generater, 0.5 KVA. Shriram Honda. 1 No. 2. Spray Painting Set. 1 No Plate Battery with 1500 Watt Inverter system 1 No. OFFICE EQUIPMENTS & MACHINERIES : 1. Computer - P IV. 3 No. 2. Computer - P III. 1 No.
5 3. Compaq Laptop PIV dual core IBM Thinkpad 1 No. 4. HP 1210 Printer, Scan, Copier 1 No. 5. Printer Inject. HP Make. DJ 670C 1 No. 6. EPABX System ( Accord make) 1 No. 7. HP Laserjet 1020 Printer 1 No. 8. EPABX System (Accord Tele Magic ( X 205 ). 1 No. 9. Fax Machine ( Sharp ). FO No. 10. HP Deskjet 1020 Printer. 1 No. LIST OF TESTING EQUIPMENTS. Name of Equipments. Quantity. 1. Fluke Multimeter 77 III 1 No Phase Test Panel for Testing No Load Current ( Self Made) 1 No. ( No Load Loss, Full Load Loss, Impedance Voltage etc ) Phase Test Panel for Testing No Load Current ( Self Made) 1 No. ( No Load Loss, Full Load Loss, Impedance Voltage etc ). 4. High Voltage Test Set (0-5KV, AC, N.T.P.L make 1 No. 5. Meger V.D.C (Wacco make) 2 Nos. 6. Multi Meter (Matwani make) 3 Nos. 7. Tong Tester (Analogue) 1 No. 8. Tong Tester (Digital) 1 No. 9. Frequency Meter (Portable Type, A.E.make) 1 No. 10. Watt Meter of Different Range (A.E.make) 3 Nos. 11. Current Injection Transformer (3 Phase, 0-30V, 250 Amps.) ( Self Made) 1 No. 12. Current Injection Transformer (1 Phase, 0-30V, 200 Amps.) ( Self Made) 1 No. 13. Digital Multimeter of Diff. make. 7 Nos Phase Variac, 28A, 15A, 8A, (A.E/G.Dot make) 3 Nos Phase Variac, 8A, 4A, 2A, (A.E. make) 6 Nos. 16. Load Testing Arrangement 2 Set. 17. Testing Transformer of Diff. Voltage 2 Nos. 18. Portable Ammeters, A.E. make 3 Nos. 19. Portable Voltmeter, A.E. make 3 Nos. 20. Oscilescope, 20 Mhz. 1 Nos. 21. DFDV Generator Set 1 No. 22. Wheaston Bridge 1 No. 23. Digital Resistance Test Bridge. Make Matwani Make. 1 No. 24. Inductance / Resistance / C Measurement Tester 1 No. 25. Precision Grade Current Transformer, NTPL make 1 No. 26. Phase Checker 1 No. 27. Callibrated Precision Grade C.T.multitapped 2 Nos. 28. Frequency Testing Panel 1 No. 29. ELTEL Make Digital C. T. Test Bridge 1 No. 30. NTPL Make - Current Transformer Test Bridge. ( CTBN T2R ). 1 No. 31. NTPL Make - Precession Current Transformer. 5 Amps. 1 No. 32. NTPL Make - 5 Amps. 0.8 PF Burden Box. 1 No. 33. NTPL Make current Injection System. 1 No. ( PC NT 5 RSW. Type 200A 04V ). 34. NTPL Make Standard P. T. / 11kV / 6.6kV/ 3.3kV 1 No. 35. NTPL Make Standard Burden Box for 11kV / 6.6 kv / 3.3 kv 1 No. 36. Toroidal Winding Machine 1 No. ( Make Technocom Automation Pvt. Ltd ). 37. Temperature Measurement Test Set ( Digital ). 1 No
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