Double Wound Transformer
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Double wound Transformer is a device that transfers energy from one circuit to another by Magnetic coupling. Apart from its ability to easily convert between different levels of Voltage & current in AC circuits, transformer also provide very useful feature called Isolation. which is the ability to couple one circuit to another without the use of direct wire connection. A very useful application of this is that even if the secondary winding is imposed a high DC voltage (wrt ground) it has no effect on the primary side. This impressed voltage is often called "Common mode Voltage as it can be seen at more than one pt in the ckt with reference to common ground. This transformer Isolates the common-mode voltage so that it is not impressed on the primary ckt at all. For that matter this could be an AC voltage, even at a different frequency & transformer will isolate it from primary side.
Double Wound Isolated Variable Transformer
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Engineers, Scientists, Technicians working in laboratories on sensitive equipments 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 Engg. 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 Variauto followed by a 1: 1 Isolation transformer or vice versa as shown in figure 1. This combination becomes very bulky (heavy) with two separate transformers, wiring or a combined bulky box. occupying much of test test bench space. This is more so as the current rating or VA increasing. It looses its mobility. Radio Electric has solved this problem by designing a "Double Wound Isolated Variable Transformer". This elegant & compact arrangement uses only ONE Transformer on a Single torroidal Core. This provides 2.5 kv Isolation between prim & sec, prim & body with a Variable Output Voltage from 0V to the required voltage. Various models are as Illustrated in table 1.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, 8 Amp. etc.). We also manufacture in table-top models 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
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Instrument Transformer
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An instrument transformer’s role is to provide accurate inputs to protection, control and metering systems including revenue metering. The main tasks of instrument transformers are: To transform currents or voltages from a usually high value to a value easy to handle for relays and instruments. To insulate the metering circuit from the primary high voltage system. To provide possibilities of standardizing the instruments and relays to a few rated currents and voltages. Our offerings: Current Transformers Voltage Transformers Combined Current/Voltage Transformers
Instrument Transformer
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An instrument transformer’s role is to provide accurate inputs to protection, control and metering systems including revenue metering. To transform currents or voltages from a usually high value to a value easy to handle for relays and instruments. To insulate the metering circuit from the primary high voltage system. To provide possibilities of standardizing the instruments and relays to a few rated currents and voltages.
Control Transformer
580 Per unit
1 unit (MOQ)