Current sensors - Import export

The rectifier with built-in current sensor for fast turn-off is designed for the operation of electromagnetic devices. It ensures fast turn-on and turn-off. The rectifier with bridge circuit comprises a thyristor and timer. During overexcitation, the rectifier delivers bridge rectified output voltage before changing over to half-wave rectification. On the DC side, the output voltage is enabled by the built-in current sensor which measures the AC current of the connected motor. If the motor is stopped, the rectifier turns off on the DC side as soon as the current falls below the turn-off threshold. The turn-off voltage generated by the inductive load is limited. The rectifier is suitable for connection in parallel with AC motors. The current sensor must be wired into the motor current path in such a way that the current flow created when the motor operates in generator mode will not pass through the sensor. This is crucial to avoid delayed or impaired DC side switching.

Air insulated switching module incorporates a Tavrida Electric vacuum circuit breaker with a per phase actuator, housed in a corrosion resistant tank. Six main circuit bushings, made from UVstable polymer, are covered with silicone rubber bushing boots. Each bushing has builtin current and voltage sensors for protection, measurement and indication purposes. The outdoor switching module is equipped with six, high voltage bushings with embedded current and voltage sensors. Current sensing is performed by Rogowski coil sensors. Capacitive sensors are used for voltage measurement in all six bushings. Tavrida Electric manufactures small vacuum interrupters with extremely long mechanical and electrical lifespans. A specially designed axial magnetic field distribution provides even current density over the contact surface and significantly improves the vacuum's interrupting performance.

The ZPA 20 zeta potential analyzer is a laboratory measuring instrument for an accurate and fast zeta potential measurement, i.e., the charge near the surface in solution. It uses a patented measuring method based on the bidirectional measurement of the streaming potential or the streaming current. The ZPA 20 uses removable measuring cells for different types of materials. Therefore, plate-shaped samples as well as fibres and powders can be easily prepared and placed in the corresponding measuring cell. The ZPA 20 has measuring sensors for voltage, current, conductivity, pH, pressure, and temperature. Thanks to its powerful stepper motor, the ZPA 20 can make the electrolyte flow through the measuring cell at different speeds and pressures, alternately from opposite directions. This results in measurement results with high statistical accuracy. Concentration-dependent measurements can be realised with the optional LDU 25 liquid dosing unit.