RE, Sphere Gap is provided with Motorised arrangement to adjust the gap. The lower sphere gap shall Motorised and shall move upwards and downwards for the adjustment of gap. The upper sphere shall be hang shall be roof of the test lab with in insulator and current limiting resistance shall be provided.
Variable Auto Transformers
‘RE’ VARITX is the trade name of the continuously variable voltage Auto transformer manufactured by ‘RE’. It is an most economical effective device for step less and continuous voltage control of Single Phase and 3 phase AC voltages for numerous applications for the industrial and Laboratories usages for testing and calibration purposes. ‘RE’ VARITX are used for operation at nominal voltage of 240V AC to give output Voltages between 0 to 270V at 50/60 Hz by a Booster Auto Transformer. Three such ‘RE’ VARITX connected electrically in star and mechanically interlocked to move together are used for operation on 415 Volts, 3 phase AC supply to give output from voltage from 0 to 470 Volt at 50/60Hz. ‘RE’ Manufactured VARITX is having good Regulation with Negligible waveform distortion. Varitx are robust, energy efficient, noiseless and easy to operate with excellent short time over load capabilities. ‘RE’ manufacturers specialized Oil cooled or air cooled motorized/manually operated VARITX upto 800 Amps with supply voltage of 240 Volts to give output voltages from 0 to 350 Volts, 3 Phase VARITX up to 800Amps with input supply voltage of 415 Volt 3 Phase to give output Voltages from 0 to 600V.
Impulse Voltage test systems are mainly used to check insulation performance of HV apparatus including Transformers, Reactors, Power Cables, CT/PT/CVT, Insulators, Bushings, Lightning Arrestors, GIS Switchgears, Motors / Generators etc. IVG are mainly used to generate standard lightning impulse full waves, Switching Impulse wave, impulse voltage ranges from 5kV to 500kV, energy from 2kJ to 50kJ. It can be used to carry out steeping and oscillating impulse test by adding some extra component. It operates with a PLC based control system. Charging time and charging voltage can be selected. Once the selected charging voltage has been reached, a trigger pulse initiates the firing of the lowest spark-gap of the impulse generator. When all the spark-gaps fired all the stages are connected in series thus multiplying the impulse voltage. The impulse voltage divider reduces the impulse voltage to a value that the measuring and recording instruments require.