The realization of our top of the range transformer is the result of the combination of technologically advanced design and production processes. Besides meeting current safety and engineering standards, the VDT possesses special properties such as the ability to supply electrical loads beyond normal rated capacity* (kVA) without assistance from forced air fans. It provides unbeatable reliability to the user’s electrical system compared to all other types of transformers offering higher degrees of durability and operating life time. To achieve this, only top quality materials and the resin encapsulation of conducting coils by Vacuum Pressure Impregnation (VPI) process are utilized. This process allows the insulating resin to be impregnated into all parts of the transformer coil and together with curing of the impregnated transformer coil at high temperatures results in the VDT being able to perform at it’s optimum and achieves best in it’s class humidity protection.
Product application
As a result of its unique properties and outstanding safety features that surpasses all other types of transformers, it is especially suitable for :
- computer and data centers
- communication control centers
- hospital facilities
- high-rise buildings
- computer controlled manufacturing facilities
Product feature and benefit
- no need to warm-up transformer to expel moisture before energizing transformer as compared to older technologies
- designed and manufactured in Thailand
- better properties than other VDT’s manufactured by leading overseas manufacturers as able to operate at higher voltage ratings (medium voltage) of 12, 22, 24 and 33 kV
- in case of accidental damage to the transformer, it can be repaired locally providing huge savings in expenses and time as compared to similar imported transformers
- eliminates the need for having 2 identical cast resin dry type transformers in parallel operation for higher degree of reliability by substituting with 1 VDT
- very low probability of insulation break-down under normal working conditions and environment due to utilization of excellent high temperature resistant (class H) insulating materials
- able to supply electrical loads higher than normal rated capacity (kVA) without assistance from forced air fans but limited to specified rated capacity ceiling as compared to cast resin dry type transformers which will be critically overloaded if it is energized with forced air fans operating and the forced air fans are to broken down
- lower partial discharge values which translate to longer operating lifetime compared to all other types of transformers
- can be designed and manufactured to different voltage ratings (for medium voltage and below) and to most special requirements.
- uses “green” environmentally friendly materials in the construction which will not cause environmental pollution
- offers high degree of safety making it safer to use in buildings where people reside or work as compared to all other types of transformers
- reduces expensive wiring expenses and electrical losses (i.e. electricity bill savings) for low voltage electrical system as transformer is installed nearer the center of load usage
Product Range
Product range of Ventilated dry-type (VDT) transformer
| No. of phase | Frequency | Primary voltage | Rated power |
| 3 phase | 50 Hz | up to 36 kV | 315-2500 kVA |
