+91-9121685111 #5-5-35/153/3, First Floor, Prashanthi Nagar, Kukatpally, Telangana, Hyderabad – 500072
+91-9121685111 #5-5-35/153/3, First Floor, Prashanthi Nagar, Kukatpally, Telangana, Hyderabad – 500072
+91-9121685111 Plot No:5,Phase:4, Pashamylaram, Patancheru(M.D), Sangareddy (D.T), Telangana India.
ISO 9001:2015
The Best
#1 in India
Number #1
Supplier in region
Contact Us

Isolation Transformer Manufacturer

Isolation Transformers

Vajra Transpower Pvt Ltd supplies Cast Resin Transformers with customized features (voltage, turns ratio, taps, enclosure) as required by the client. Basically cast-resin transformers encase the windings in epoxy resin. These transformers are easy to install since they are dry, without cooling oil, and so require no fire-proof vault for indoor installations. The epoxy protects the windings from dust and corrosive atmospheres. 

Cast Resin Transformers are ideally suited for environments that demand the highest level of safety. A transformer electrical isolation is required to prevent damage to either electrical circuit when any equipment connected to it.

In Medical isolation transformer is very important to isolate leakage of various electrical waves which are present on normal power source. To transfer electrical power from a source of alternating current power to a device, isolation transformers are used which are manufactured by isolation transformer dealer in Hyderabad. Also, the powered device is isolated from the rest of the power source for safety measures.

1) Isolation transformers are used to provide galvanic isolation which is the principle of isolating difference sections of electrical systems to prevent current flow

2) There is no direct conduction part between the input and output of the isolation transformer.

3) Isolation transformer decreases the induction, capacitance, and electromagnetic waves from input to output

4) Isolation transformer blocks the flow of the DC components in signals from one circuit to another circuit

5) Isolation transformers will have a ratio of 1:1 between input and output windings are used to protect against electrical shock between the ground and live conductors.

6) Less electrical noise is produced by isolation transformers which are used for supplying clean power and protective power for sensitive equipment like CNC Machines, Medical Devices, and Laboratory instruments.

7) Isolation transformers filter the radio frequency, spikes, surges and provide dedicated neutral circuit. By using an isolation transformer for any sensitive equipment, this will provide excellent protection against all sorts of electrical noises which are present on common electrical circuits on common distribution network. It enhances the life of the equipment, reduces malfunctions and frequent breakdowns.

Vajra Isolation Transformers are manufactured with great care by providing various shielding thus excellent protection is achieved for all sensitive and costly equipment which are connected on vajra isolation transformers Healthcare, Tech. Parks, Commercial Centers, Airports, Railway Stations, Underground Substations, Indoor Substations, Hospitals, Theaters, Metro Stations, Power Plants, Residential Apartments,  etc. Vajra Transpower Pvt Ltd designs cast resin transformers as per IS:11171 & IEC:60726 standards. 

Technical Specifications
Salient Features
Most Suitable For
system connections delta star
Input voltage 415v 3 phase
output voltage 415-200v 3 phase
ratios 1-1 and 2-1
regulation better than 3.5%
power factor 0.75 lead t0 0.75lag di-electric
strength 3kv for 60 sec insulation resistance – better than 1000 mega ohms
coupling capacitance 0.1 pf for 80 db
leakage current less than 20 micro amps
comman mode attenuation 80 db to 100 db
contruction standards as per is 2026 part I & II, is 1171
type of execution closed to 0
operating temparature 0 to 45 c
Type of cooling natural air forced , air cooled
eliminates stresses that come from normal electrical transients
reduces the effects of power line problems line noise, spikes, surges, transients and nuetral minimum


Input Output Rating Available
415 V AC 3 Ph
415 V AC 3 Ph
415 V AC 3 Ph
220 V AC 3 Ph
3 KVA 3 Ph and
upto1500 KVA 3Ph
230 V AC 1 Ph
230 V AC 1 Ph
230 V AC 1 Ph
110 V AC 1 Ph
1 KVA 1 Ph and
upto 50 KVA 1 Ph

1. Eliminates stresses that come from normal electrical transients

2. Meet stringent clean power requirements of the sophisticated / sensitive equipments

3. Reduces the effects of power line problems like Noise, Spikes, Surges, Transients and Neutral to minimum

  • cnc machines
  • bio medical equipmemts
  • printing machiniers
  • cell phone networks
  • scientiic equipments
  • textile machineries
  • oil & vanaspathi plants
  • large computer installations
  • Garment equipment