DC, 0.1 Hz to 5 MHz, 3-phase 4-wire, High Precision Power Analyzer for Motor and Inverter Efficiency Analysis
- Basic accuracy ±0.03%, DC accuracy ±0.05%, 50 kHz accuracy 0.2% (*1)
Evaluating power conversion efficiency requires the ability to accurately measure power in every band, from DC to high frequencies. The PW8001 delivers exceptional measurement accuracy not only for 50/60 Hz, but also across a broad frequency band, including for DC and at 50 kHz. This allows it to accurately evaluate power conversion efficiency which often involves measuring multiple frequencies.
- Sampling performance 18-bit, 15 MHz (*1)
- Noise Resistance (CMRR) 110 dB, 100 kHz* (*1)
Evaluating power conversion efficiency requires the ability to accurately measure power in every band, from DC to high frequencies. The PW8001 delivers exceptional measurement accuracy not only for 50/60 Hz, but also across a broad frequency band, including for DC and at 50 kHz. This allows it to accurately evaluate power conversion efficiency which often involves measuring multiple frequencies.
- 8-channel power measurement
Increasingly, hardware like electric vehicle (EV) drive systems that use dual inverters and electric power interchange systems in smart homes are adopting multi-circuit designs in order to utilize energy effectively. A single PW8001 can measure 8 channels of power data, allowing equipment with 8 measurement points for power such as dual motors as well as other equipment with multiple circuits to be evaluated in one stroke.
- Electrical angle measurement function
In order to implement fine control of a permanent magnet synchronous motor (PMSM), it’s necessary to assess the motor’s characteristics under actual operating conditions. The PW8001’s electrical angle measurement function can perform voltage and current advance measurement, which is necessary in order to implement vector control of the dq coordinate system. The instrument can calculate Ld and Lq values from electrical angle measurements and ascertain motor parameters under actual operating conditions.
- Dual torque value correction functions
Torque meter measurement error has a substantial impact on motor analysis. The PW8001 can perform calculations using a correction table based on user-defined values for nonlinear compensation and friction compensation. The instrument can accurately analyze high-efficiency motors as well.
- 1500 V DC CAT II, 1000 V DC CAT III (*3)
Renewable energy generation systems are being engineered to use increasingly high voltages in order to reduce equipment construction costs and transmission loss. Evaluating generation systems requires instruments that are capable of high-voltage measurement. The PW8001 Input Unit U7001 can safely measure directly input high voltages of up to 1500 V DC (CAT II) and 1000 V DC (CAT III). (The Voltage Cord L1025, which can accommodate 1500 V DC [CAT II] and 1000 V DC [CAT III], is also available.)
- High-accuracy measurement of high-frequency, low-power-factor power
In order to improve power conversion efficiency, it’s necessary to assess power loss in reactors. The lower the reactor’s loss, the lower the power factor, making accurate measurement difficult. The U7005’s outstanding high-frequency characteristics and noise resistance make it an extremely effective tool for analyzing power loss in high-frequency, low-power-factor reactors.
| Measurement lines | 1-phase-2-wire, 1-phase-3-wire, 3-phase-3-wire, 3-phase-4-wire |
|---|---|
| No. of PW8001 input units | Max. 8 units (mix and match) |
| Type of input unit | U7001 2.5 MS/s INPUT UNIT U7005 15 MS/s INPUT UNIT |
| Measurement frequency band | U7001: DC, 0.1 Hz to 1 MHz U7005: DC, 0.1 Hz to 5 MHz |
| Sampling | U7001: 2.5 MHz, 16-bit U7005: 15 MHz, 18-bit |
| Data update rate | 10 ms, 50 ms, 200 ms |
| Accuracy for power (U7001) | 50/60 Hz: 0.02% of reading + 0.05% of range DC: 0.02% of reading + 0.05% of range 50 kHz : 0.4% of reading + 0.1% of range |
| Accuracy for power (U7005) | 50/60 Hz : 0.01% of reading + 0.02% of range DC : 0.02% + 0.03% of reading of range 50 kHz: 0.15% of reading + 0.05% of range |
| Measurement range | Voltage: 6 V, 15 V, 30 V, 60 V, 150 V, 300 V, 600 V, 1500 V Current: (probe1) 100 mA to 2 kA, (probe2) 100 mA to 50 kA (Range configuration changes depending on the current sensor used, U7001 only for Probe2.) |
| Measurement parameters | voltage (U), current (I), active power (P), apparent power (S), reactive power(Q), power factor (λ), phase angle (φ), voltage frequency（fU）, current frequency（fI）, efficiency (η), loss (Loss), voltage ripple factor (Urf), current ripple factor (Irf), current integration (Ih), power integration (WP), voltage peak (Upk), current peak (Ipk)
- Harmonics measurement: maximum analysis order 500th |
| Calculation function | Efficiency and loss calculations, User-defined calculations*, Delta conversion, Current sensor automatic phase shift calculation |
| External interface | USB flash drive, LAN, GP-IB, RS-232C, external control, optical link*, BNC sync.*, CAN or CAN FD* |
| Power supply | 100 V to 240 V AC, 50/60 Hz, 230 VA |
| Dimensions and mass | Approx. 430 mm (16.93 in) W × 221 mm (8.70 in) H × 361mm (14.21 in) D, Approx. 14kg (493.84 oz) |
| Included accessories | - Power cord ×1 - Instruction Manual ×1 - GENNECT One (PC applications) CD ×1 - D-sub 25-pin connector ×1 (PW8001-02, -05, -12, -15 only) |
