Before the emergence of comprehensive power transmitters such as YW2000 intelligent power monitor and YW3000 power parameter acquisition module, in order to measure various power parameters, power transmitters plus PLC/industrial computers or other A The solution of /D acquisition equipment, with mature applications and numerous products, has played a huge role in the development of the power industry, but there are also many inevitable shortcomings:
Occupies a large space and a large number of wires: To measure different electric quantities, you need to configure transmitters with different functions. If you measure multiple electric quantities of a circuit, you need multiple electric quantity transmitters, and the wiring is complicated;
Installation method is not flexible: Since conventional power transmitters generally use DC stabilized power supply, and the output DC signal is not suitable for long-distance transmission and acquisition equipment requirements, they are generally installed in a centralized manner;
Multiple power transmitters are connected in series/parallel, causing the voltage transformer (PT) and current transformer (CT) to be overloaded, affecting the stability and accuracy of the system measurement;
Harmonic components in the power line have a greater impact on the accuracy of the transmitter. In some special occasions, such as places where high-power motors start frequently, the measurement accuracy of the transmitter is affected by harmonics, which reduces the accuracy of the output signal;
Due to the need for analog data acquisition of 4-20mA/0-5V and other DC output signals sent by the transmitter, it is required to configure an A/D module or board. In addition, considering the cost of a signal cable, the overall cost is relatively high.
Comprehensive power transmitters such as YW2000 intelligent power monitor and YW3000 power parameter acquisition module use advanced software algorithms and reliable hardware circuits, breaking through the traditional boundaries, transmitting power data through communication networks, and making the collection/transmission of power more For brevity.
High-precision, multi-function: one YW2000, YW3000 is equivalent to dozens of conventional power transmitters;
It can be distributed and installed directly on the field measurement end. A twisted-pair shielded cable can realize long-distance transmission of various power data, without A/D module (or board) and signal cable, and the overall cost is low;
With split-phase measurement function, a YW2000, YW3000 can simultaneously measure the voltage, current, active power, reactive power, power factor, apparent power, frequency, line voltage, total active power, total reactive power, total visual In power, frequency, electrical energy and other parameters; more economical! More practical!
The measured value is a true effective value: the measured value of an ordinary power transmitter or meter is generally an average value, while the measured values of YW2000 and YW3000 are all true effective values;
Good stability, free from harmonic interference: using dedicated DSP chip, digital verification technology, suitable for a variety of complex environments and harsh places, stronger anti-interference ability!
Powerful communication function and simple networking: using ModBus communication protocol, it can communicate with multiple brands of PLC, RTU and industrial control configuration software;
Novel structure and flexible configuration: YW2000A adopts miniaturized design and DIN rail installation. YW2000 adopts Chinese character LCD display interface, which is intuitive and flexible.
It can be installed in a high-voltage switch cabinet or a low-voltage drawer cabinet in a distributed manner. The transmitter power supply is directly supplied by AC/DC 220V power supply, making the installation more flexible! The application is more extensive.
