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1.Power quality monitoring device TC-300B features
Safe and reliable:The voltage input adopts high voltage isolation module, and the current input adopts high precision current converter to isolate the input signal from the measuring system safely。The anti-interference ability of TC-300B is greatly improved。
Easy to use:The power quality monitoring device uses a large screen interface in Chinese and simple key operation, which is more convenient for users to use。
High precision:Meet the national standard A level instrument requirements。For harmonics and three-phase unbalance, the benchmark algorithm is adopted without approximate calculation, high-precision A/D (16-bit) is adopted, and the collection rate is 12.8 kHz。
Strong software functions:The power quality monitoring device adopts DSP+ARM+CPLD kernel with fast processing speed and rich software functions, which makes TC-300B suitable for complex test work and data processing work, and greatly improves the test efficiency and level。
Communication interface (RS-232/485, network port) :The power quality on-line monitoring device usually adopts RS232 to RS485 communication。If communication over Ethernet is required, it shall be specified separately in the contract。
Test parameters:System frequency, network harmonics, three-phase voltage unbalance, voltage deviation, voltage fundamental wave RMS and true RMS, current fundamental wave RMS and true RMS, active power, reactive power, 2-50 harmonics, true power factor and other power quality parameters specified by the national standard。
Mass storage:The in-line power quality monitoring device has a built-in 512M memory and stores data in 5-minute increments-each channel can store historical data for 3 months。
2.Power quality monitoring device TC-300B main functions
Can be widely used in photovoltaic and other new energy system power generation transmission and distribution, power electronics, motor driving and other fields, measurement and analysis of public power grid to the user or new energy photovoltaic power generation AC power quality, the measurement and analysis: voltage deviation, three-phase voltage allowable unbalance, grid harmonics。
Wavelet transform is used to measure and analyze the harmonics of non-stationary time-varying signals。
Measure and analyze the power quality of various electrical equipment to public power grid under different operating conditions。
Load fluctuation monitoring: Periodically record and store the trend of voltage, current, active power, reactive power, frequency, phase and other power parameters。
Power equipment adjustment and operation process dynamic monitoring, help users to analyze the power equipment adjustment and operation process of the problem。
Test and analyze the fault causes of circuit breaker operation, transformer overheating, motor burning, automatic device misoperation and so on in power system。
The dynamic parameters of reactive power compensation and filter devices in power system are tested and analyzed, and their functions and technical indexes are quantitatively evaluated。
3.Power quality monitoring device TC-300B test range and technical index
Frequency measurement
Measurement range: 45 ~ 55Hz, center frequency 50Hz, measurement conditions: the signal fundamental wave component is not less than 80% F.S.
Measurement error: ≤0.02Hz
Input voltage range: AC 10-450V
Input current range: 5A or 15A Other ranges please specify。
Fundamental voltage and current amplitude: Allowable error of fundamental voltage ≤0.5％F.S.;Allowable error of fundamental current ≤ 1%F.S.
Measurement error of phase difference between fundamental voltage and current: ≤0.5°
Measurement error of harmonic voltage content: ≤0.1％
Measurement error of harmonic current content: ≤0.2％
Three-phase voltage unbalance error: ≤0.2％
Voltage deviation error: ≤0.2％
Power deviation: ≤0.5％
