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VARIABLE VOLTAGE FURNACE TRANSFORMER (0-11000v) We make variable voltage supplies from 0- 470 V/ 1000 V /1200 V/ 3300/11000 V or any desired voltage upto 5000 kva. These variable voltage supplies are used for special purpose applications and testing. |
PRINCIPLE OF OPERATION: The Variable Voltage Supply/ Regulator consist of following basic components depending on the rating of the equipment.
- 1) Step up Transformer
- 2) Buck boost transformer
- 3) Rolling contact type voltage regulator
- 4) Automatic control gear
Variable Voltage Supply/ Regulator with constant Input and variable output. It consists of a Step up Transformer, Regulators and Buck Boost transformer. This circuit is normally used to Vary on load voltage when the regulator used in conjunction with buck/boost transformer and step up transformer.
- The equipment are available with following control devices:
a) Manual version
- b) Motorised version
- c) Remote control
In manual version a Hand wheel / T – Handle is provided and desired output voltage can be obtained by rotating the Wheel / Handle manually.
- In case of motorized version and servo motor will be provided which can be operated by two sets of push buttons or toggle switch for raising and lowering the output voltage.
- In case of remote control arrangement one extra set of push buttons will be provided in your main panel from where the operator would be able to maintain the desired voltage with the help of those push buttons.
Special Purpose Transformers
The special purpose transformers found their application in areas where the voltage requirement of the machines available differ significantly from the standard voltage. Our special purpose transformers are at the forefront in the industry. We strictly adhere to the international quality standards while manufacturing these transformers. We also entertain custom requirements up to 5000 kva.
- DESCRIPTION
- ROLLING CONTACT REGULATOR
- This is essential a Continuously tapped auto wound transformer having helical coils mounted on a conventional laminated transformer core. However, the regulating winding is designed as a single layer type giving longer and slimmer version of the transformer coil but in principal it is the same.
- The regulating winding is varnished and baked to improve rigidity and ensure that the construction is non hydroscopic. After proper treatment longitudinal/track is ground on the coil to form a bared copper surface with the winding wire covering providing inter turn insulation. Graphite rollers , assembled on carrier boards, traverse throughout the length of the coil track. These rollers are connected electrically with the output terminals and as they are driven over the track a variable voltage is obtained.
- The Regulator may be of one sided or can be made double sided. In case of double sided Regulator both side of regulating winding is bared and allows rollers to be driven in opposite direction on either side of the coil. In such cases carrier boards are provided on both sided of the coils and the output terminals will be taken out though balancing transformer.
- The contact carrier is driven by a hand wheel / T–Handle or motor which is coupled to the chain drive. Limit switches operated by the carrier board are fitted to prevent over run. In case of your specific requirement additional limit switches will be fitted for minimum position inter-locking along with the auxiliary circuit. The power supply of the motor is derived from the Regulator unless otherwise specified. The entire regulator assembly is housed inside a rigid M.S.Tank filled with oil. The Hand wheel / T – Handle, Motor push buttons etc. is fixed up inside a separate sheet steel box which is attached to the main tank. Wherever automatic control is required the solid stat voltage sensing relay is also provided inside a sheet steel box fitted along with the regulator tank.
- For voltage regulating units, the equipment consist of Regulator and transformer as explained earlier. The description of the regulator have been already described above. The step up and buck boost transformer will be of conventional type as per IS:1180 or IS:2026.
- In VOLTAGE REGULATING UNIT the equipment consist of Regulators and Transformers are explained earlier. The description of the Regulator have already been described above. The Transformer (buck/boost and step up) are of conventional design as per IS:1180 or IS:2026. The Regulator is combination with transformer gives the desired regulation of the voltage in case of higher capacity and H.T equipment. Some times in Low Voltage higher capacity units the regulator and the transformers are enclosed inside a single tank, however, in case of a high voltage higher capacity units the regulator is housed inside a separate tank and transformer is housed in another tank. A separate instruction and maintenance manual for the transformer is enclosed here with which will be applicable only to the transformer part of the regulating unit.
AUTOMATIC VOLTAGE REGULATOR
EPOXY CAST RESIN TRANSFORMER
VARIABLE VOLTAGE TRANSFORMER
DRY-TYPE CAST RESIN TRANSFORMER
POWER DISTRIBUTION TRANSFORMER
INDUSTRIAL AUTOMATIC VOLTAGE CONTROLLER
RECTIFIER TRANSFORMER
ISOLATION TRANSFORMER
variable voltage transformer
Special Purpose Transformers
The special purpose transformers found their application in areas where the voltage requirement of the machines available differ significantly from the standard voltage. Our special purpose transformers are at the forefront in the industry. We strictly adhere to the international quality standards while manufacturing these transformers. We also entertain custom requirements up to 5000 kva.
POWER is an ISO 9001:2008, DUN BRADSTREET (862376458), IEC, FGI, DIC, EEPC & NSIC registered company. Having five manufacturing plants in all over India. We are engaged in the manufacturing of Industrial Transformers up to 10 MVA (Epoxy Cast Resin Construction, Dry Type, Oil Cooled) low and medium voltage, Industrial Automatic Voltage Stabilizer ranging up to 7000 KVA capacity (U.K. based Brentford type), Variable voltage supply (0 – 33000 Volts), Special Purpose Transformers (step up / step down, auto transformers, Ultra Isolation Transformers), Rectifier equipments from 0-1500 Volts and up to 25,000 Amps. for Industrial applications.
AUTOMATIC VOLTAGE REGULATOR
EPOXY CAST RESIN TRANSFORMER
VARIABLE VOLTAGE TRANSFORMER
DRY-TYPE CAST RESIN TRANSFORMER
POWER DISTRIBUTION TRANSFORMER
INDUSTRIAL AUTOMATIC VOLTAGE CONTROLLER
RECTIFIER TRANSFORMER
ISOLATION TRANSFORMER
automatic voltage regulator, which primarily consists of the following features :
-
Linear, plus / minus type vertical rolling contact voltage regulator
For making these regulators, we use heavy section of electrolytic grade rectangular copper strip instead of copper wire in order to minimize the losses & increase the efficiency of equipment. We also employ self lubricating Carbon Roller Assemblies instead of ordinary Carbon Brushes that offers more reliability and trouble free performance of the equipment. -
Double wound buck / boost type series transformer
In our Buck / Boost transformer, we make use of CRGO lamination to reduce iron losses. The coils of Buck / Boost transformer are wound with heavy section of multi strips electrolytic copper to minimize copper losses to get better efficiency of the equipment. -
Electronic control circuit and meter panel
Automatic Voltage Controller usually consists of very simple electronic control voltage circuit for monitoring and controlling voltage, repair and maintenance of which is very easy. The regulator and Buck / Boost transformer are oil cooled, placed in same or separate sheet steel tanks. These devices are provided with radiators for effective cooling. The coils of voltage regulators & Buck / Boost Transformers are vacuum impregnated and oven dried as per IS.
| 1. Q: | What is your minimum order quantity? |
| A: | 1 set. |
| 2. Q: | What is your delivery time ? |
| A: | Depend on the type of transformer. |
| 3. Q: | What is your payment term? |
| A: | 30% advance by T/T , 70% before delivery by T/T or L/C or we can discuss about it. |
| 4. Q: | What kind of starndard you follow? |
| A: | IEC, ANSI, CSA, GB, etc |
| 5. Q: | What kind of supporting documentation you can provide normally |
| A: | Quotation,outline drawing,manufacturing plan, quality control plan testing plan, financial report, type test report(KEMA, CESI),reference list,etc |
| 6. Q: | What is your normal wanrranty period? |
| A: | 12 months after transformer operation. |
| 7. Q: | Can u do installation and commissioningin user's site? |
| A: | Yes, we can send our installation team to user's country for service. |
| 8. Q: | Do you have any experience in this kind of transformer? |
| A: | Yes, we can provide reference list for check. |
| 9. Q: | Are you manufacturer or trading company? |
| A: | Manufacturer and Trading company. |
We have a commitment to provide an UNCONDITIONAL FIVE YEAR GUARANTEE for all the EQUIPMENTS supplied by us in INDIA. After sales service is the backbone of our organisation.
For outside india we will provide one year warranty.
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