Product Highlights
Development of battery-powered electric vehicles (EVs) is accelerating as part of the global effort to realize a decarbonized society. The CT6840A series, which offers improved DC current measurement accuracy compared to the previous CT6840 series, can measure DC power in battery drive systems and solar power systems at a higher level of accuracy.
The CT6840A series provides automatic phase correction for automatically correcting current sensor phase just by connecting to the Power Analyzer PW8001. This function automates configuration of phase correction values, a process that previously had to be carried out manually, eliminating settings errors and facilitating accurate power measurement. (All current sensors have phase characteristics, and the Power Analyzer performs phase correction so that power can be measured accurately.)
The "clamping" nature of the CT6840A series allows current measurement in an operating vehicle without requiring cables to be cut. When used in combination with a Hioki Power Analyzer, it can accurately perform current and power calculations for system batteries during charging and discharging as required for fuel efficiency measurements under the WLTP international standard.
In large-scale solar power systems like megasolar installations, extremely large currents on the order of 1000 A to 3000 A branch out and flow through two to four wires. Current values of each wire measured with the CT6840A series sensors can be added for the total current value using the box-type CT9557 sensor unit. The total current value will be output as one signal to allow evaluation of PCS efficiency.
Features
- Current Range: 20A AC/DC
- Frequency Bandwidth DC to 2 MHz
- 20 mm diameter max clamp opening (0.79 inch)
- Power supplied via the measurement instrument
- Automatic phase correction function
- Ideal for EV inverter evaluation and PV power generation PCS evaluation
- Single-handed operation and robust locking mechanism
- Ideal for use in environmental testing with broad -40°C to 85°C temperature range
