Products Range » Dry Type Transformer
Dry Type Transformer
Dry type transformer are non-explosive fire
resistant, air insulated, and are cooled by natural circulation of
air through ducts provide in the windings. High temperature and high
dielectric insulating materials like glass fiber reinforced, nomex
insulating tapes are used in such a way that the entire assembly is
capable of withstanding high electrical and mechanical stresses with
good dissipation of heat causing low temperature rise within the
prescribed limit of insulation class.
The Dry Type transformer are manufactured to comply with National
International Standards BIS, IS 11171, IEC 76.
The winding are made up of electrolytic Grade, Soft and bright annealed
copper conductors covered with nomex insulating tapes. The wound coils are
preheating and impregnated with silicon varnish under vacuum pressure and
undergo a curing cycle. The low voltage coils are wound over glass fiber
reinforced cylinder having high mechanical strength. The high voltage coils
are supported over yoke on glazed porcelain or resin insulators. The core is
made of CRGO silicon steel laminations duly annealed after shearing and
assembled in mitred construction for low NO LOAD LOSS.
The yoke frame has adjustable pressure plates to clamp & secure the
coils adequately. Lifting arrangements is provide on the top yoke frame so
that the core and coil assembly is lifted. OFF-CIRCUIT TAMPING if required
are provided on HV winding and terminated on fiber glass terminal board for
changing the transformer ratio in OFF CKT position.
Fire safety and environmental aspects are of increasing importance
especially in respect of energy supply. The substitution of oil-filled
transformers by dry type transformers is one of the most important step
towards it. Dry Type transformer is used when it has to be located near load
center and in a fire hazardous place. As there is no oil used in the
transformer and special type of fire resistant insulation are used for the
windings the fire risk is considerably reduced.
||Up to 2500 KVA
|No. of Phases
||On Load Tap Changer to
provide +5% to -15% Taps in steps of 1.25% on the H.T. Side. Else,
Off Circuit Tap Links for ± 5% Taps on H.T. Side in steps of
||Class 'F' (for Dry Type
||As per required.
Dry type Transformers has the
- More efficient
- Non toxic
- Highly safe
- Non flammable
- Space saving by placing near the load end
- Low Noise
- Low Maintenance
- Can be supplied with off circuit links
and Ultra Isolation Transformer
Switching of Electrical Equipments in
industrial and commercial Generates spikes up to 10000 Volts and
high frequency Noises thus disturbing the sine wave output. The
spikes can cause the failure of Thyristor, Microprocessor or other
The High frequency noise can interface with digital
Electronic Equipments Causing data corruption erratic behaviors,
loss of memories etc
Isolation Transformer eliminate such noises and attenuates the
spikes to minimal values, providing complete protection against such
electrical disturbances. It consists of double wound Transformers
with Extremely low coupling capacitance to isolate the voltage
spikes and reduce noise from mains with extremely high insulation
resistance. The turn ratio of Isolation transformer is 1:1. It is
generally installed with the separate machines.
With vast experience in design, skilled
workforce and most modern infrastructure, We manufacture A.C.
Variable supplies an equipment which is used to vary the 400/440
fixed volts to 0-11 kv (Variable) with capacity upto 5000 kva.
These Variable Supplies are generally used for testing of
Transformer, Motors, and Generators manufacturing units to perform
various electrical tests.
A.C. Variable Transformer comprises of Buck-Boost Double Wound
Transformer, plus-minus Type linear rolling contact regulator for
stepless control & Electronic control unit.
We offer Furnace Transformer, 3 Phase To 2
Phase Transformer (Scott-Connection, LE-Balance Transformer), 2
Phase To 2 Phase Transformer, Step Down Transformer, Step Up
Transformer, Balancing Transformer, Auto /Double Wound Transformer