WXZ type microcomputer harmonic elimination device voltage transformer is our company according to the electric power department and users due to the ferromagnetic resonance and frequent (PT) burning or explosion accidents, to extensively solicit the views of users of the newly developed, a kind of intelligent production of harmonic elimination device. It takes 16 bit microcontroller 80C196 as the sampling arithmetic, logic judgment and control center (CPU), by high power, no contact harmonic components for export, with liquid crystal display (LCD), signal lamp, touch keys and a miniature printer as human-computer interface, with intelligent software, component technology and advanced principle, simple and convenient to use the "fool" type of diagnosis, harmonic elimination, recording device.
The device display voltage component system clock and the PT open delta voltage of 17Hz, 25Hz, 50Hz, 150Hz four kinds of frequency, voltage, can distinguish ferroresonance and single-phase grounding fault, configurable communication interface to transmit the information to the relevant departments, suitable for unattended substation.
1.1 scope of application
Applicable to a variety of voltage levels of PT.
The main technical characteristics of 1.2 products
1.2.1CPU uses INTEL80C196 microcontroller, data acquisition, operation, control and output logic judgment, fast speed, high precision, double "watchdog" (Watchdog) circuit, anti-jamming, self inspection and self recovery ability;
1.2.2 uses a 128 x 64 LCD display (LCD), Chinese menu display, intuitive, information rich;
1.2.3 intelligent software technology, advanced principle, performance is stable, safe and reliable;
1.2.4 real time display system clock, calendar, PT open delta voltage of 4 frequency (frequency of 3 /17Hz, 2 /25Hz, 3 /50Hz frequency, frequency doubled /150Hz) voltage components;
1.2.5 can distinguish the overvoltage, ferroresonance and single-phase grounding, and the ferromagnetic resonance elimination;
1.2.6 for various faults can give alarm signal and display, print and save the relevant information;
1.2.7 micro printer to print output fault report (voltage component fault type, fault time and PT open delta voltage 4 frequency);
1.2.8 has the memory function, fault information can be stored 5 recent, not to lose after power off;
1.2.9 harmonic components export power, no contact;
1.2.10 through the Chinese menu and panel key setting, simple, convenient debugging and maintenance;
1.2.11 wiring is simple, easy to install;
1.2.12 hardware, software redundancy design, strong anti-interference ability;
1.2.13 is applicable to a variety of voltage levels of PT;
1.2.14 configurable communication interface to all kinds of fault information is transmitted to the relevant departments, is suitable for unattended substation.
1.3 product types and specifications
2 technical characteristics
2.1 the use of environmental conditions
2.1.1 indoor use, and good indoor ventilation;
The 2.1.2 runtime environment temperature: -20 ℃ --50 ℃;
2.1.3 storage environment temperature: -25 ℃ --70 ℃;
2.1.4 humidity: the maximum humidity 90%, no condensation surface;
2.1.5 protection grade: IEC529-P53;
2.1.6 altitude: <2000M;
The 2.1.7 atmospheric pressure: 80 ~ 110Kpa;
2.1.8 surrounding medium no conductive dust and lead to metallic or insulating corrosive gases, such as mold damage.
2.2 technical parameters
2.2.1 power supply: DC/AC220V;
2.2.2 power:
2.2.2.1 power supply circuit: DC220V ≤ 30W ≤ 30VA or AC220V;
2.2.2.2 AC voltage circuit: ≤ 1VA;
2.2.3 AC rated voltage: 100V;
2.2.4 contact capacity (signal outlet, the normally open contact): 1A, DC220V (pull);
2.2.5 communication interface: RS232/RS485, baud rate 2400 ~ 9600bps;
Anti jamming performance of 2.2.6
Severity level device can bear GB/T14598.14 specified for electrostatic discharge test grade iii;
Severity level device can withstand GB/T14598.9 regulations for radiation field interference test grade iii;
Severity level device can bear GB/T14598.10 specified for fast transient Ⅲ variable interference test;
The equipment can withstand GB/T14598.13 provisions of the frequency of 1MHz and 100kHz damped oscillatory wave (the first half wave voltage mode 2.5kV, mode 1kV) burst disturbance tests.
The insulating properties of 2.2.7
The insulation standards meet GB/T14598.3 regulations.
The mechanical properties of 2.2.8
Working conditions: response test through grade Ⅰ vibration under the GB/T11287, and GB/T14537 I level provided by impulse response test.
Transportation: by Ⅰ vibration durability test of GB/T11287 regulations, I impacting durability and collision test and GB/T14537 rules.
