Test and Measurement sales: +44 (0) 1928 597200 / tm_sales@uk.yokogawa.com
Other sales: +44 (0) 1928 597100 / other_sales@uk.yokogawa.com
Power meters
laboratory power meters
WT500 Power Meter - NEW - 1 / 2 / 3 Elements
- Configurable for Single & Three Phase measurement
- Basic power accuracy: 0.1%
- DC measurement:0.5Hz to 100 kHz power frequency range
- Current Input Range (direct): 0.5A to 40A
- Voltage Range: 15v to 1000v
- Simultaneous measurement of voltage, current, power and harmonics
- High-speed data updating (100ms)
- Display of numerical values, waveforms and trends
- Measurement of "bought" & "sold" watt hours
- USB memory storage function
- Ethernet & GPIB interface options
- Easy setup & operation
- 3yr warranty
WT210 Power Meter - Single Phase
- Single Phase Measurement capability
- Basic power accuracy: 0.1%
- DC measurement, 0.5Hz to 100kHz power frequency range
- Compact design (half-rack size)
- 5 mA range for very low current measurements (suitable for testing against IEC 62301)
- Line filter functions
- High-speed data update (as fast as 10 readings per second)
- Harmonic measurement function available
- User calibration capability
- 3yr warranty
WT230 Power Meter - Three Phase
- Single / Three Phase Measurement capability
- Basic power accuracy: 0.1%
- DC measurement, 0.5 Hz to 100 kHz power frequency range
- Compact design (half-rack size)
- Line filter function
- High-speed data update (as fast as 10 readings per second)
- Harmonic measurement function available
- User calibration capability
- 3yr Warranty
HiTec Current Measurement Solutions
The preferred current connection for power meters is the power meter direct current input. Up to 50Arms this is no problem but higher currents generate much heat in the internal shunt, making the measurement inaccurate, due to temperature drift.
- Measures AC + DC currents at the same time
- Isolated from the primary circuits
- Very high stability and accuracy
- High bandwidth
- Also available in clamp type
- Saturation detection circuit with automatic reset after over current
- Can be switched on with current already present when connected
- For higher currents the only solution is to make use of external current sensors. Current sensors are widely available, but current sensors for accurate energy and power measurements are scare. A current sensors for electical power measurements needs to have specifications for its internal phase shifts at different frequencies.
