Actually, the instrument current converter RET-DT is a flexible measuring ring (Rogowski coil) with a control unit that supplies low resistance (3 V AC) proportional to the measured current. It enables measuring of AC strength within the range 3 - 30 000 A.
It is intended for use together with RETOM-21, RETOM-25 devices and the voltamperemeter and phase meters RETOMETR-M2, RETOMETR-M3 and the RETOM-30kA system.
The flexible measuring ring supports measuring in wires located in hard-to-reach places, where conventional current sensors are inapplicable. Power supply is provided by two batteries AA, the operation time of one battery set is at least 400 hours.