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Radiotone Isolated Double Wound Variable Transformers

Supplier & Manufacturer of Radiotone Isolated Double Wound Variable Transformers. This elegant & compact arrangement uses only One Transformer on a Single torroidal Core.

Radiotone Isolated Double Wound Variable Autotransformer

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Radiotone Isolated Double Wound Variable Autotransformer
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Product Details:
Voltage125-230 V
PhaseSingle Phase
Frequency50/60 Hz
BrandRadiotone
Power SourceElectrical

Engineers, Scientists, Technicians working in laboratories on sensitive equipment have a need for Isolated mains supply, with a variable output Voltage. This facilitates them in testing various devices demanding different voltages & currents. It is also an Electrical Engineering practice to test devices by applying steadily increasing voltage from 0 V to the device rated voltage. To achieve the above objective, it is normal practice to use a Variable Autotransformer (colloquially known as Variac), followed by a 1: 1 Isolation transformer or vice versa. This combination becomes very bulky & heavy with two separate transformers or even with a combined box. It also occupies much of test bench space. This is more so with increasing current rating or VA. It also loses mobility.

Radio Electric Pvt. Ltd. has solved this problem by designing Radiotone Double Wound Isolated Variable Autotransformer (colloquially known as Variac). This elegant & compact arrangement uses only ONE transformer on a single toroidal core. The Radiotone Double Wound Isolated Variable Autotransformer provides 2.5 KV Isolation between primary & secondary, primary & body with a Variable Output Voltage from 0V to the required voltage. Various models of Radiotone Double Wound Isolated Variable Autotransformer (colloquially known as Variac) are as Illustrated in the table. This concept can also be used very effectively in DC power supplies with Variable output (eg. Input 230V / 110 V, Output 0 to 25 V, 5A or 0 to 15V, 8A., etc).

We also manufacture table-top models of Radiotone Double Wound Isolated Variable Autotransformer with various types of input/output sockets (Shuko / Dual type / Round type, etc) as required.

MODELS :

Radiotone DW Isolated Variable Transformer

I/P 125 V, 60 Hz supply voltage & output Variable from 0 to 150 V :

ModelMax. Power (Amp/Watts)
Radiotone DWIsoVariac 1.5 A1.5 Amp/225 W
Radiotone DWIsoVariac 3.0 A3.0 Amp/450 W
Radiotone DWIsoVariac 6.06.0 Amp/900 W
Radiotone DWIsoVariac 1212.0 Amp/1800 W
Radiotone DWIsoVariac 2020.0 Amp/3000 W
Radiotone DWIsoVariac3030.0 Amp/4500 W

I/P 230 V, 50 Hz Output 0-260V :

ModelMax. Power (Amp/Watts)
Radiotone DWIsoVariac2.0 Amp
Radiotone DWIsoVariac4.0 Amp
Radiotone DWIsoVariac8.0 Amp
Radiotone DWIsoVariac15.0 Amp
Radiotone DWIsoVariac20.0 Amp
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Umesh Marathe (Director)
Radio Electric Private Limited
394/C, Lamington Chambers, Dr. Bhadkamkar Road, Grant Road East
Mumbai - 400004, Maharashtra, India
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