Time Relay is a time-control devices, with its high precision delay, Starting capacitor delay range, long life, small power consumption, the output capacity of contacts, convenient and intuitive adjustments; appearance was also a small size, light weight, the advantages of compact structure. From the sub-types of functions: electricity-delay, delay-connected, power-delay, delay of a short interval of delay, delay reciprocating type (on-off cycle), the cumulative time, multi-path Delayed type stars - Start-triangle-and-delay. Relay involving specific to the time required for inspection of delay parameters: Er repeated error such as delay, setting error Eset, Ev error voltage fluctuations, temperature error Starting capacitor Et, integrated error Ec in specific tests, and other more mundane, especially in the above-mentioned Delay parameters Er (repeated error), Eset (tuning error), Ev (voltage fluctuation error) is judgement time delay relays an important basis for performance, and the above parameters were detected in the examination staff at each station must be dedicated Relay test of time measured above the platform products and the accuracy of time-time sync analog, will show its measured value of a product set for high-precision timing compared to the time indicated by the time-delay for parameters, and also each of the parameters measured by the record, measured by the required number to be reached, then the light of the corresponding formula error checking their data processing. And the results of its provisions allow error, the final determination of the error an error indicator whether products meet the stipulated requirements.

The traditional detection methods are tested on the more demanding test, the test of strength and the corresponding man-made data processing workload is also very strong, and in detecting and recording will inevitably arise in error, thus affecting the detection of the correct judgement. Based on the above considerations, and the corresponding external MCU detection system will relay delay time parameters for testing and storage of data Starting capacitor retention, to be determined by the number of detections Upon completion, through the records of its data storage deal with the after treatment Delay with a margin of error of the measured delay allows error compared to determine whether products meet the requirements delay error, and the ultimate result in the transmission to the computer and print it. SCM through the testing process in the automatic detection, in the process of significantly reducing the intensity of the work of inspection, the product of a more scientific, more standardized, the corresponding delay parameter error and delay also eye-catching visual, to a large extent to guarantee the detection accuracy. In short, the time relay Intelligent Test Parameters of the applicability of its strong, it not only greatly simplified the corresponding detection operation, as well as to provide accurate and reliable detection of a better guarantee, intelligent detection will be extended in time When testing parameters will be more demonstrated its superiority.

Typical time relay time parameter testing circuit

In a typical test time relay circuit, the general use of conventional quartz-time detection and the time delay relays for synchronization than right. Quartz-time accuracy of 10-4 to 10-7 h, and the detection time of the adjustable (according to the choice of the corresponding S, min, h measurement units), after each test can be controlled to automatically cleared. Be detected time delay relays showed that the minimum time for the 0.01 S (10ms), quartz-time test of its accuracy can meet the required precision.

Relay for the use of a wide range of time, resulting in an operating voltage specifications of the stalls. Such as considering the use of analog instrumentation indicators could be considered 1.5, and the AC (DC) voltage shows that take into account the sub-stall show its voltage value of its scale in 1 / 3 to 2 / 3, so as to Starting capacitor ensure its accuracy. If DP (digital) panels may consider the table to table its instructions voltage values. In addition to ACV its waveform distortion should not exceed 7 percent, the frequency error of not more than 50 Hz +2%; DCV peak ripple coefficient of not more than 5%.