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Product information
The PM126 series color graphic multi-functional power parameter measuring instrument is powerful. In addition to the full electrical parameter monitoring function, it also has powerful functions such as asymmetric components, unbalance degree, harmonic analysis, maximum and minimum value recording with timestamps, demand/maximum demand, over-limit alarm, and SOE event recording. It is standardly equipped with an RS485 communication interface, and a second RS485 interface or wireless 485 interface can be added. It has various expansion function modules (up to 8DI/6DO/2AO/2PO...) that can be flexibly selected according to needs. It has been widely used in power distribution cabinets, SCADA systems and energy efficiency management systems, substation automation, distribution network automation, community power monitoring, industrial automation, and intelligent buildings. The PM126 has 0.5s-level accuracy and has multiple time zone/time period/rate complex rate functions, which can meet the application needs of high-precision monitoring, internal sub-metering, and energy efficiency management. It is easy to install, with simple wiring and small engineering volume. It can be programmed and set on site, and can complete the networking of different PLCs and industrial control computer communication software. The PM126 series is unique in that it has a large-screen color graphic LCD display and multiple languages (including Chinese). In addition to numerical values, it can also display harmonic spectrum diagrams/waveform diagrams, etc.
Function summary.
■ Real-time measurement: information such as current, voltage, active/reactive/apparent/phase power, power factor, frequency, load nature, load rate, four-quadrant power display.
■ Electrical energy and time-of-use electrical energy with complex rates: 0.5s-level bidirectional metering, forward/reverse/absolute/net active/reactive electrical energy; time-of-use electrical energy with complex rates: 6 time zones, 12 time periods in each time zone, 4 kinds of rates.
■ Demand and maximum demand: real-time current/power demand, maximum demand.
■ Maximum/minimum value recording: real-time statistics of the maximum and minimum value information of each phase/line voltage, each phase current, active power, reactive power, apparent power, power factor, frequency, unbalance degree, THD and other values, with timestamps. The maximum and minimum values can be cleared on the screen.
■ Over-limit alarm: Corresponding parameters can be set for monitoring, and high/low limit thresholds and delays can be set. After exceeding the threshold, an alarm is activated and can trigger DO action, and at the same time record alarm events.
■ Asymmetric components: positive sequence/negative sequence/zero sequence components; voltage/current unbalance degree; phase angle calculation; and can be presented in graphic and text form on the color screen.
■ Harmonics: THD, 2-63 subharmonic analysis, telephone interference coefficient, current K factor, crest factor, etc.; the screen can display harmonic analysis values and spectrum bar graph display.
■ Waveform recording and display: Current and voltage waveforms can be presented in real time, and waveforms can be stored according to set conditions, up to 10.
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