MCDZ-300B Online Power Quality Monitoring Device (Single Channel)

MCDZ-300B Online Power Quality Monitoring Device (Single Channel)

Model: MCDZ-300B Quantity: 1 set Manufacturer: Hubei MECI Electric Power Equipment Co., Ltd

Category: Power Quality, Harmonic Analyzer

Keywords: MCDZ-300B Online Power Quality Monitoring Device (Single Channel)

Product Overview

The MCDZ-300B online power quality monitoring device, launched by our company (hereinafter referred to as the MCDZ-300B), is a high-performance, multi-functional power quality testing and analysis instrument. It features a DSP+ARM+CPLD core architecture and a 5.7-inch large LCD display with a 320×240 dot matrix, resulting in a more compact design and enhanced functionality.

Product Features

1. Safe and reliable

The voltage input employs a high-voltage isolation module, while the current input utilizes a high-precision current transducer, ensuring safe isolation between the input signal and the measurement system. This significantly enhances the MCDZ-300B’s immunity to electromagnetic interference.

2. Easy to use

Features a Chinese-language interface and simple button controls for ease of use.

3. High precision

Complies with the requirements for Class A instruments as specified in the national standard. It employs reference algorithms for harmonic analysis, three-phase unbalance, flicker, and voltage fluctuations, with no approximate calculations; utilizes a high-precision 16-bit A/D converter; performs simultaneous sampling at a rate of 12.8 kHz.

4. Powerful software functionality

By employing a DSP+ARM+CPLD core architecture, the MCDZ300B delivers high processing speed and robust software functionality, making it well-suited for complex testing and data-processing tasks and significantly enhancing testing efficiency and performance.

5. Communication Interface (RS-232/485)

  • Pin 2: RS232 transmit pin
  • Pin 3: RS232 receiver
  • Pin 5: RS232 ground terminal
  • Pin 6: RS485 A terminal
  • Pin 9: RS485 B terminal

6. Numerous test parameters

All five major national standards for power quality—system frequency, grid harmonics, three-phase voltage unbalance, voltage fluctuations and flicker, voltage deviation, fundamental voltage RMS and true RMS, fundamental current RMS and true RMS, fundamental active power, active power, fundamental apparent power, harmonics from the 2nd to the 50th, and true power factor—are covered.

7. Large-capacity storage

The online power quality monitoring device is equipped with a 512 MB internal memory that stores data in 5-minute intervals, enabling continuous historical data storage for up to four months per channel.

Technical Specifications

1. Frequency Measurement

Measurement range: 45–55 Hz, with a center frequency of 50 Hz; measurement conditions: the fundamental component of the signal shall be no less than 80% of full scale.

Measurement error: ≤0.02 Hz

2. Input voltage range: AC 10–120 V

3. Input current range: 5 A

4. Fundamental Voltage and Current Amplitude: The permissible error for fundamental voltage is ≤0.5% of full scale; the permissible error for fundamental current is ≤1% of full scale.

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

6. Harmonic voltage distortion measurement error: ≤0.1%

7. Harmonic current distortion measurement error: ≤0.2%

8. Three-phase voltage unbalance error: ≤0.2%

9. Voltage deviation error: ≤0.2%

10. Voltage variation error: ≤0.2%

11. Power deviation: ≤5%

12. Flicker error: ≤5%

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