Abstract: Introduced American SUMMIT Corporation’s PS4000 electrical energy quality analyzer’s main feature, described the PS4000 surge/depreciation test and the transient state test function in detail.
Key word: Single-phase/three-phase circuit; Overtone; Surge; Voltage peak
PS4000 is one kind of electrical energy quality analyzer which Corporation produces by American SUMMIT, it is to satisfy engineer to further understand the electrical energy quality designs one kind small, simple, and the function formidable analysis tool, may use for to analyze or the monitoring input electrical energy quality.
PS4000 not can only electric quantity values and so on testing voltage, electric current, power, power factor, frequency, cycle, overtone, moreover can transient state sizes and so on testing voltage or electric current surge, depreciation, impact, voltage peak, thus determines the power supply quality fast for the user the fit and unfit quality, or to demonstrate that the product power source quality provides a basis. This instrument may simultaneously be suitable commercial and the industrial used power source, is in the modern measuring instrument a section of high performance, carries the convenience the electrical energy quality instrument.
1 PS4000 main feature
Below the new PS4000 electrical energy analyzer has the outstanding test function:
* may test and catch the surge, the depreciation, the impact, the peak signal;
* may analyze each channel from 1 time to 63 subharmonic component voltage/electric current peak-to-peak value and the phase
* may simultaneously analyze all parameter values and so on channel’s voltage, electric current, power, power factor, frequency, energy, make-and-break period, energy peak, expenditure
* can demonstrate each second observed value continuously
* has the complete pressed key operation and the menu type contact surface
* may the continuous working 8~10 hours, after using the battery charger, may use continually.
PS4000 may simultaneously carries on parameter and so on surge, depreciation, peak, overtone, voltage, electric current, power, power factor, frequency, cycle to three-phase circuit’s three voltages and four electric currents analyses and the monitor, the test data may upload to the computer by the graph or the form form demonstration. This instrument has the specialized analytical control software, may carry on the far-end monitoring to PS4000, the especially qualify to the electrical network quality, the large-scale generating plant, power source qualities and so on domestic electric appliances carries on the analysis, is product which the electric power expert cherishes. The SUMMIT Corporation’s electrical energy analyzer by the world many country’s user uses, the American former electrical network edition like this was once described: “I have seen many analyzers, but, this product has made the true profound impression to me, PS3000 was already a very firm small component, but new PS4000 has provided the more specialized electrical energy quality analysis function.”With its necessary use’s voltage, the current probe can direct and 1 arrive at the 15000V voltage as well as 10mA to the 6000A electric current docking. Through the input adjustment compared to and PT and the CT union, may provide is higher, the greater voltage electric current test. Besides in the indoor monitoring, PS4000 may also install in the Weather-resistant external box, in order to outdoor carry on nobody monitoring. Moreover, PS4000 “the connection inspection” the characteristic is advantageous for the operator correct junction circuit, moreover each kind of necessary appendix does not need other power supply.
PS4000 contained preceding product PS3000 the complete test function, PS3000 already used for 8 years, the product has proliferated 7 continents. The customer has the very high appraisal to the Powersight analyzer, is specially simple in the use, the perform reliably, may provide aspects and so on prompt effective technical support. The SUMMIT full load once said: “to after dropping together from previous us the measuring appliance overhaul which damages, to the present six years, it still had been already complete, as far as I know, my table even also in the South Pole observation station use”.
2 PS4000 test transient state quantity
In fact, the overwhelming majority customer specially cares about PS4000 the transient state test function, but this is also precisely PS4000 surpasses place of PS3000 and the PS250, therefore, the author hoped that enables more people through this article to be familiar with PS4000 the function, lets PS4000 bring many for the electrical energy analysis convenient.
When analysis transient state parameter, PS4000 can momentarily monitor each surge, the depreciation, the impact and the voltage peak signal, and momentarily the tracer signal type, has the time, to arrive at the peak value, the duration and so on, simultaneously may catch and save a worst signal, as well as provides the basis for the later fault analysis and the judgment.
2.1 each phase voltage/electric current surge and depreciation value test
When carries on electric circuit’s surge and the depreciation analysis, PS4000 may provide the following three recording mode:
* record surge/depreciation event;
* record surge/depreciation graph;
* record surge/depreciation profile.
(1) records the surge/depreciation event
If in the signal monitor time section, the surge appears one time, PS4000 thought that has a surge event to occur, appears two times, PS4000 thought that has two surge events, ex analogia ……, when has the event occurs, PS4000 will record this event’s occurrence date, to have Yu Nage the phase line, to belong to information and so on time which the surge or the drop signal, the signal scope as well as the signal continue.
The PS4000 display mode mainly has two kinds: The first kind demonstrated for the tabulation that each line demonstrated an event, its display mode as shown in Figure 1; The second kind graphical display for that this way take the time as an abscissa axis, in the ordinate axis display signal’s scope and the duration, its display mode as shown in Figure 2.
(2) records the surge/depreciation graph
When has the surge or the depreciation event occurs, PS4000 approximately will give the surge or the drop signal graph. The graph from has the surge/depreciation first 2 cycles to start, to continue for 10 cycles, until examines the next 1/2 cycle to approach does not have the surge/depreciation to occur again, and continues up to 1 second time. In the graph will demonstrate the surge/depreciation occurs time as well as every a half cyclical RMS value. See also Figure 3. As seen in Figure 3, the graph upper half will demonstrate that the key the information, like event’s occurrence time, the duration, which the signal do belong to three-phase one, the signal scope size and so on. If has had the voltage surge, will then also demonstrate with its synchronism’s electric current signal in identical Zhang Tuzhong.
(3) records the surge/depreciation profile
The surge/depreciation profile is to a surge/depreciation event’s detailed description, they start before the event have the two cycles, continues for 10 cycles, if event’s duration surpasses for 10 cycles, in the profile will record the recent 10 cycles. If monitors in the time section is not has an event to occur, PS4000 will save the worst surge/depreciation profile. This way when demonstration, in the profile place above will demonstrate the event occurs time, phase line, signal scope and signal duration and so on. What if occurs is the voltage surge/depreciation, then the isopen electric current signal will also demonstrate in identical Zhang Tuzhong.
2.2 monitor high speed transient signal
The high speed voltage/electric current transient signal’s production with was measured generally the line itself has nothing to do with, is mostly by the lightning, short-circuits suddenly, the switch moves and so on reasons to cause, their peak-to-peak value in instantaneous will flee to is very high, the duration will be quite also short, once such signal has surpassed the definition triggering threshold, PS4000 will catch this signal. The triggering threshold divides into “the absolute value threshold” and “the relative value threshold” two kinds.
When establishes as the absolute value threshold (for instance supposes to 180V), that starts in the monitor later at any time, so long as the signal peak-to-peak value has surpassed 180V or - 180V, this signal will be caught and is recorded. If establishes as the relative value threshold, for instance 20V, PS4000 will take the reference by normal condition’s in profile, in this case, when the actual profile scope is higher than or is lower than above identical normal profile scope 20V, PS4000 will catch record this signal.
When carries on the transient signal monitor, PS4000 may provide the transient state event and the transient waveform two recording modes.
(1) transient state event
Under this kind of record pattern, PS4000 will record the transient state event’s occurrence time, to have the phase line, the peak value size and the duration. Is the same with the surge/depreciation test’s display mode, the transient state monitor’s demonstration also includes the tabular display and the graphical display two ways.
(2) transient waveform
Time the transient state monitor’s transient waveform may record the transient state event information in detail, they will continue 50ms, and before the event has one cycle to start the record, simultaneously may catch a worst signal in the entire monitor time.
Is similar with the surge/depreciation test profile, this kind of test profile’s place above the display signal will also occur time, signal duration, signal scope as well as signal phase line and so on important information. Figure 4 is one kind of transient waveform schematic drawing.
3 concluding remark
This article gave PS4000 transient state test function one to introduce in detail that hoped the reader will have the harvest, the author believed: The PS4000 so formidable test function may help the user to solve some with the power source or the electrical energy related breakdown, if you were hoping that now has one kind to be able to analyze the power supply system quality the tool, or to be searching the power failure to worry, that might as well considers to use PS4000, it is the electrical energy analysis advantageous assistant.
