Darui Electric recommends
Power quality tester host; laptop (optional); voltage test leads: a set of 4; AC current clamps: 3 pieces, 0—5Arms, model CP-4.
Main Features
- Safe and Reliable
Voltage input uses high-voltage isolation modules (±680V, response time <2μS), current input uses AC current clamps (0--50KHz, 0--5Arms) to safely isolate input signals and measurement system. This not only makes GDDN-2000B safe, reliable, and convenient in use, but also greatly improves its anti-interference capability;
- Easy to Use
Portable structure, small size, light weight, one person can carry the instrument to the site for testing; built-in high-performance lithium battery, can work continuously for eight hours without external power supply.
- Multi-channel, Multi-parameter, High Precision
The features of multi-channel, multi-parameter, and high precision make GDDN-2000B versatile. Multi-channel: up to 3×3 voltage channels, 3×3 current channels; Multi-parameter: can simultaneously measure voltage, current fundamental, 2-50th harmonics, phase, frequency, power, three-phase unbalance, voltage deviation, voltage fluctuation and flicker, etc.; High precision: meets national standard Class A instrument requirements. For harmonics, three-phase unbalance, flicker, and fluctuation, benchmark algorithms are used without approximation
calculation, using high-precision A/D (16-bit) simultaneous sampling.
- Powerful Software Functions
PQSMS PRO Power Quality Management Analysis Software is a backend management and analysis software for power quality, running on WIN9X/2000/XP/NT operating systems, with a user-friendly interface and graphical and curve analysis functions, making GDDN-2000B suitable for complex testing and data processing tasks, greatly improving testing efficiency and level;
The laptop and power quality tester are separate, with RS232 and network card interfaces, facilitating communication with the laptop and software upgrades;
The power quality tester has built-in 512M memory, storing data in 1-minute units, and can continuously store historical data for one month.
- Our company has a high-level research team and high-precision research and testing equipment. As the manufacturer of the product, we will enthusiastically provide users with technical consultation and services related to power quality testing, analysis, and treatment.
Technical Specifications
Measurement range: 48～52Hz, center frequency 50Hz, measurement conditions: signal fundamental component not less than 80% F.S.
Measurement error: ≤0.02Hz
- Input voltage range 10-480Vrms
- Input current range 5Arms, 200Arms (optional)
- Fundamental voltage (current) amplitude: Fundamental voltage allowable error: ≤0.5% F.S.; Fundamental current allowable error: ≤0.5% F.S.
- Phase difference measurement error between fundamental voltage (current) ≤0.5°
- Harmonic voltage content rate measurement error ≤0.1%
- Harmonic current content rate measurement error ≤0.2%
- Flicker error: Pst≤5%, Plt≤5%
Testable Parameters
System frequency, grid harmonics, three-phase voltage unbalance, voltage fluctuation and flicker, voltage deviation, fundamental and true RMS values of voltage, fundamental and true RMS values of current, fundamental active power, active power, fundamental apparent power, apparent power, true power factor, and all parameters specified in the five national standards for power quality.
Main Applications
- Measure and analyze the AC power quality supplied by the public grid to the user's receiving end, with indicators: supply frequency deviation, supply voltage deviation, supply voltage fluctuation and flicker, allowable three-phase voltage unbalance, grid harmonics
- Apply wavelet transform to measure and analyze harmonics of non-stationary time-varying signals.
- Measure and analyze the impact of various electrical equipment on public grid power quality under different operating conditions.
- Load fluctuation monitoring: periodically record and store trends of electrical parameters such as voltage, current, active power, reactive power, frequency, phase, etc.
- Dynamic monitoring of power equipment adjustment and operation process, helping users solve problems during equipment adjustment and commissioning.
- Test and analyze fault causes in power systems such as circuit breaker operation, transformer overheating, motor burnout, and misoperation of automatic devices.
- Test and analyze dynamic parameters of reactive power compensation and filtering devices in power systems and quantitatively evaluate their functions and technical indicators.
- With features of portability, multi-parameter, large capacity, high precision, and application of modern signal analysis theory, it can be widely used in scientific research in fields such as power transmission and distribution, power electronics, and motor drives.
