WZDN-35D portable power quality analyzer

The WZDN-35D portable power quality analyzer is a high-performance multifunctional power testing and analysis instrument. Adopting DSP+ARM+CPLD core, 7-inch large screen color LCD display, compact structure, powerful functions, and convenient display. The instrument is a power quality monitoring device that combines high-speed sampling, calculation, analysis, statistics, and display functions. Real time monitoring of power quality indicators such as harmonic content, total harmonic distortion, three-phase voltage imbalance, flicker, voltage deviation, voltage fluctuation, frequency, active power, reactive power, true power factor, phase shift power factor, true effective value, positive and negative sequence of up to 63 harmonics in the power grid. Backend management and analysis software, with rich functions and easy operation.

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1. The voltage input adopts a high-voltage isolation module (2000V, response time<2 μ S), and the current input adopts an alternating current clamp (0-50KHz, 0-5Arms) to safely isolate the input signal from the measurement system. This not only ensures safety, reliability, and convenience in use, but also greatly improves anti-interference ability.

2. The data acquisition channel adopts a single channel single A/D design, with each channel having a dedicated 16 bit parallel A/D. All channels are fully synchronized for sampling, resulting in higher accuracy and faster speed. Moreover, any A/D damage in one channel does not affect the normal acquisition of data in other channels.

3. Adopting DSP+ARM+CPLD core, it has fast processing speed and rich software functions, suitable for complex testing and data processing work.

4. Configure a micro thermal printer that can print on-site real-time test data at any time.

1. Frequency measurement:

Measurement range: 45-55Hz, center frequency 50Hz, measurement conditions: the fundamental component of the signal is not less than 80% F.S

2. Measurement error: ≤ 0.005Hz;

3. Input voltage range: 10V~660V (special range can be customized)

4. Input current range: 5A (other ranges can be selected according to user requirements)

5. Fundamental voltage and current amplitude: The allowable error of fundamental voltage is ≤ 0.2%; Allowable error of fundamental current ≤ 0.2%

6. Measurement error of phase difference between fundamental voltage and current: ≤ 0.5 °

7. Harmonic: meets the A-level requirements in GB/T 14549-1993;

8. Inter harmonic: meets the A-level requirements in GB/T 24337-2009;

9. Three phase voltage imbalance: ≤ 0.2%

10. Three phase current imbalance: 0.5%;

11. Voltage deviation error: ≤ 0.2%

12. Power and power factor: ≤ 0.5%

13. Flicker: 5%;

14. Voltage fluctuation: 5%.

15. Device interface (extended function): GPS hard time synchronization, IRIG-B code time synchronization, or second pulse time synchronization signal.

16. Working hours: The internal battery can work continuously for 10 hours.