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Multifunction power meter calibration device features and functions


Real time magic,[link widoczny dla zalogowanych], and being school start time table (or termination) time t compared the total error is calculated as follows switching the first time Parker 2003 Volume 450 No. 6 of Surveying and Mapping ElectricaiMeasurement & InstrumentalionVo1.40N0.450Jun. 2003At = t - to (5) Demand indication error test. Reference JJG596 - 1999 order, the standard power meter to be determined by the amount of error of indication. Before the test was seized Demand table is cleared, the table read was seized Demand periodic pulse (typically 15 minutes) and the required amount of the maximum demand period indication, compared with the standard power value, the following formula calculate the error = so xl00 where P0 - standard meter measured actual power; H beans over RS - 485 port while read table of all schools need to be shown the amount of value. (6) the need to test the amount of periodic error. The time base error of the standard clock signal anyone to count, when the calibration Demand beginning of the cycle, the signal sent by the school table, the error count began to cumulative standard clock pulse. Demand end of the cycle, the signal was sent out again to make calibration error of dollars to stop counting. Standard error of the cumulative total will be converted to the number of clock pulse time value, measured as the amount of cycles to be t, then with the preset (theoretical) amount of cycles to be compared, calculated as the amount required by the school table periodic error r ( s) where - the standard time value (s); I - Demand the selected period (s). (7) routine tests. Routine testing, including basic error checking constant test, starting test, creep test. In all tests completed, the end of automatic meter reading copy degree (including positive and negative active and reactive power and the rate of total electricity), storage, and certificates together after printing. Easy to check all the test records, backup and can be uploaded, and can print the certificate on request. 1.3 multi-function features of energy meter testing equipment and general electronic energy meter testing equipment than the multi-function power meter calibration device has the following characteristics: (1) device with multiple epitopes in the same current,[link widoczny dla zalogowanych], voltage, wiring mode, you can check with different constant energy meter, and set the parity bit of a lap table (or directly from the calibration software automatically calculates the required number of laps), adopted by the software automatically adjusts the size of the remaining constant epitope check laps to ensure the consistency check time; (2) can be readout pulse method or the standard list method automatically checking constant test. (3) can automatically reverse phase sequence test, no manual to be replaced. (4) can automatically receive the multi-functional table clock,[link widoczny dla zalogowanych], auto-complete timing error at trial. (5) automatically receive the required amount of periodic pulse, through the deterioration Demand tester cycle automatic measurement error. (6) power meter method with the standard automatic measurements in the 0.1 ,,,,, cosq ~ = l load point of maximum demand under the error of indication. (7) Switching time measurement error. ( in the pulse sample, the device can automatically switch to receive electrical energy 3x2 Road, node-level pulse or pulses (clock, demand cycle; positive active and reactive; reverse active and reactive). Two sockets each with a rack fixed to the wall chart. (9) added some special features, such as the time reference, GPs timing devices and was the school tables and other RS-485 communication bus. 2 Conclusion As more and more promote the use of multi-function meter,[link widoczny dla zalogowanych], multi-function power meter testing equipment will also be widely used in the test sector. At present, some manufacturers of multi-function power meter testing equipment is put into use, as a relatively new type of device, is still in development stage, some features and performance indicators have yet to be applied in the continuous process of further improvement. In the future, multi function meter will continue to update on the multi-function power meter testing equipment will also continue to have new requirements. References: l】 【GB/T11 | 50-2001 power meter testing device. 【2】 Meter Technical Manual. China Metrology Publishing House. Author: Ye Ruizhen, female, Guangdong Electric Power Research Institute engineer electrical measuring chamber,[link widoczny dla zalogowanych], the work of ten years in energy metering. Received Date :2003 -04-06 (Liu New Development) \full address, zip code (Zip Code Please write the address on the back of the sender), so that you can receive timely, \received a bank transfer please send to: Bank: Bank branch in Harbin Nangang Branch Account: oooo55O8Oo0l443737 account: Electrical Measurement & Instrumentation Magazine
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