our productOil-Filled Transformer
Rishabh Technologies (Ritech) manufactures various types of oil-filled Transformers up to 10000 KVA, 33KV Class range to meet the customer requirements which can be provided with the following type of Tanks:
- Conventional type
- Hermetically Sealed with Corrugated Tank type
- Hermetically Sealed with Radiators type
Technical Specifications
| Range | 100KVA to 10000KVA |
| Voltage Class | Up to 33KV Class |
| Winding Material | Copper or Aluminium |
| Cooling | ONAN/ONAF |
| Type (Duty) | Outdoor / Indoor |
| Vector Group | Dyn1/ Dyn5 / Dyn11 or as per specific requirement |
| No. of Phase | 3 Phase |
| Tap Changer | Off Circuit or On Load Tap Changer |
| Insulating Oil/Fluid | Mineral Oil / Silicon Oil / Ester Oil |
| Applicable Standards | IS 2026, IS 1180, IEC 60076 |
Key Highlights / Features
- Shall be provided with Mineral Oil, Silicon Oil or Ester oil depending on the customer requirement
- Highest Dielectric insulation properties to with Lightening Impulse Surges.
- Meeting the requirement as per National and International Standards.
- Optimum oven heating under vacuum to achieve desired compression height & maximum insulation resistance to winding.
Uses and Applications
Cement Industries | Steel Industries | Chemical Industries | Solar Applications (Renewable Energy) | Refineries | Electricity Boards | Infrastructure | Utilities | Railways & Metro | Power Plants
Technical Specifications
| Range | 100KVA to 10000KVA |
| Voltage Class | Up to 33KV Class |
| Winding Material | Copper or Aluminium |
| Cooling | ONAN/ONAF |
| Type (Duty) | Outdoor / Indoor |
| Vector Group | Dd0yn11 / Dyn11-yn11 or as per specific requiremen |
| No. of Phase | 3 Phase |
| Tap Changer | Off Circuit or On Load Tap Changer |
| Insulating Oil/Fluid | Mineral Oil / Silicon Oil / Ester Oil |
| Applicable Standards | IS 2026, IS 1180, IEC 60076 |
Key Highlights / Features
- Specially designed for reduced Harmonic
- Uses Earthing shield between HV & LV Windings for avoiding transfer of high-frequency transients to HV & LV Side
Uses and Applications
Cement Industries | Steel Industries | Chemical Industries | Solar Applications (Renewable Energy) | Refineries | Electricity Boards | Infrastructure | Utilities | Railways & Metro | Power Plants
Induction Furnace has a coil constructed from heavy copper tubing. It is designed and tuned to the inverter circuit which applies a medium frequency (generally 500 Hz or 1000 Hz) voltage to the Induction coil. The magnetic field produced by the induction coil induces eddy currents in the charge and heats it. Medium frequency is necessary to enhance the rate of heat generation.
Technical Specifications
| Range | 100KVA to 10000KVA |
| Voltage Class | Up to 33KV Class |
| Winding Material | Copper |
| Cooling | ONAN/OFWF |
| Type (Duty) | Outdoor / Indoor |
| No. of Phase | 3 Phase |
| Tap Changer | Off Circuit or On Load Tap Changer |
| Insulating Oil/Fluid | Mineral Oil / Silicon Oil / Ester Oil |
| Applicable Standards | IS 2026, IS 12977 |
Key Highlights / Features
- Induction Furnace applications
- Provision with OFWF cooling with 100% stand by capacity.
- Very high current transformers as compared to normal Distribution transformers
Uses and Applications
Rolling Mills | Steel Plants | Metal Industries
Technical Specifications
| Range | For system Up to 33KV Class |
| Winding Material | Copper |
| Vector Group | ZN0/ZNYN1/ZNYN11 |
| Tap Changer | Off Circuit |
| Applicable Standards | IS 2026, IS 1180, IEC 60076 |
Key Highlights / Features
- Specially designed transformer with Zigzag Winding.
Uses and Applications
Industrial Sectors | EHV Substations
OIL FILLED TRANSFORMERSLOSSES AS PER IS-1180: Maximum Total Losses
up to 11KV Voltage Class Transformers
| Sr No. | Rating (kVA) | Impedance (Percent) | Maximum Total Loss (W) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Energy Effciency Level 1 |
Energy Effciency Level 2 |
Energy Effciency Level 3 |
Energy Effciency Level 4 |
Energy Effciency Level 5 |
||||||||
| 50 Precent Load |
100 Precent Load |
50 Precent Load |
100 Precent Load |
50 Precent Load |
100 Precent Load |
50 Precent Load |
100 Precent Load |
50 Precent Load |
100 Precent Load |
|||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 |
| i) | 250 | 4.50 | 980 | 2930 | 920 | 2700 | 864 | 2488 | 811 | 2293 | 764 | 2113 |
| ii) | 315 | 4.50 | 1025 | 3100 | 955 | 2750 | 890 | 2440 | 829 | 2164 | 772 | 1920 |
| iii) | 400 | 4.50 | 1225 | 3450 | 1150 | 3330 | 1080 | 3214 | 1013 | 3102 | 951 | 2994 |
| iv) | 500 | 4.50 | 1510 | 4300 | 1430 | 4100 | 1354 | 3909 | 1282 | 3727 | 1215 | 3554 |
| v) | 630 | 4.50 | 1860 | 5300 | 1745 | 4850 | 1637 | 4438 | 1536 | 4061 | 1441 | 3717 |
| vi) | 800 | 5.00 | 2287 | 6403 | 2147 | 5838 | 2015 | 5323 | 1892 | 4853 | 1776 | 4425 |
| vii) | 1000 | 5.00 | 2790 | 7700 | 2620 | 7000 | 2460 | 6364 | 2310 | 5785 | 2170 | 5259 |
| viii) | 1250 | 5.00 | 3300 | 9200 | 3220 | 8400 | 3142 | 7670 | 3066 | 7003 | 2991 | 6394 |
| ix) | 1600 | 6.25 | 4200 | 11800 | 3970 | 11300 | 3753 | 10821 | 3547 | 10363 | 3353 | 9924 |
| x) | 2000 | 6.25 | 5050 | 15000 | 4790 | 14100 | 4343 | 13254 | 4309 | 12459 | 4088 | 11711 |
| xi) | 2500 | 6.25 | 6150 | 18500 | 5900 | 17500 | 5660 | 16554 | 5430 | 15659 | 5209 | 14813 |
Note
- For transformers having Voltage class above 11 KV and up to and including 22KV: Total loss values shall not exceed by 5% of the maximum total loss values mentioned in above Table.
- For transformers having Voltage class above 22 KV and up to and including 33KV: Total loss values shall not exceed by 7½ % of the maximum total loss values mentioned in above Table.