A high-speed data-capture option has been introduced for the Yokogawa WT1800 precision power analyzer.
This function takes advantage of the WT1800's sampling frequency (up to 2 MS/s) and its ability to carry out calculations on measured parameters in real-time.
The high-speed data-capturing function can measure 3-phase voltage/current/power and torque/rotation speed/mechanical power every 5 ms (when external synchronization is off) or every 1-100 ms (depending on the clock signal frequency) if external synchronization is on.
It transmits a block of data every second to an internal or external memory or to a PC using a communications interface. Every second, the WT1800 updates its displays with the previous one second of data. The average characteristic is set using the cutoff frequency of the high-speed filter for measured data during the 5 ms or 1-100 ms period. The cutoff frequency can be varied from 1 Hz to 1 kHz in 1 Hz steps. Wiring configurations include single phase for DC input, 3-phase 4-wire and 3-phase 3-wire (3V/3A).
The firmware will also support German and Chinese menus and messages.
Target markets for the WT1800 with the high-speed option include motor and inverter evaluation in the automotive and aerospace sectors as well as alternative energy and power conditioning applications.