CURRENT TRANSFORMERS FOR DIRECT INPUTS

CURRENT TRANSFORMERS FOR DIRECT INPUTS

Wires leadings primary currents MUST be of insulated type, with adequate insulation according to the line voltage and with adequate current-carrying capacity.
The wires leading current through the current sensor must be protected from exceeding the maximum allowable by the sensor.
These sensors must be used with EL.CO instruments and only with EL.CO instruments fitted for use with TT series sensors.
The instrument’s SETUP menu allows to set the transformation rate adequate to the sensor (see Table TT-sensor ratios) and it’s possible to visualise readings of current up 999 A. Should the case be that calculated current is higher than the maximum value, the display will show the over range condition. The maximum setting of the transformation ratio is 2000/5=400.

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