Electrical measuring instrument plant

1963 ◽  
Vol 6 (10) ◽  
pp. 889-889

1960 ◽  
Vol 3 (9) ◽  
pp. 784-784
Author(s):  
M. Sh. Kapnik ◽  
A. S. Sergeev


2014 ◽  
Vol 651-653 ◽  
pp. 428-431
Author(s):  
Xia Zhao

Taking Model DK-52 (Grade 0.05) multi-function three-phase electrical measuring instrument calibration device as an example, the paper describes how to evaluate the uncertainty in measurement result of indication errors in mathematical model.





2021 ◽  
Author(s):  
Pan Jiangen ◽  
Li Qian ◽  
Li Xiaoni

In a goniophotometer system, it is often unavoidable to use long cables to connect power supply, electrical measuring instrument, and the device under test (DUT). The measurement errors caused by cable impedance should not be ignored. An equivalent electrical circuit model considering the cable impedance of a typical goniophotometer is established in this paper. The measurement errors caused by the cable impedance are analysed by simulation. In DC and low frequency circuits, the cable impedance is almost resistive, while the inductive impedance of cables is significant and may lead to considerable errors when frequency is above 1 kHz in the circuits. Cable solutions in goniophotometry are introduced and recommended.



2013 ◽  
Vol 278-280 ◽  
pp. 884-887
Author(s):  
San Qiang Wang ◽  
Xing Zhe Hou ◽  
Quan Zhou ◽  
Wen Li Chen ◽  
Qiu Hui Zhuang

In recent years, with the rapid development of electric power, the construction of a large number of substation, electrical measuring instrument and device is also increasing, accordingly, testing and calibration work is growing. The traditional calibration method has been unable to meet the actual needs of work. Combining with the practical work, and put forward a new automatic calibrating method, this paper introduces the electrical measuring instrument verification device of automatic calibration system of the working principle and system structure, and illustrates the system application.



2017 ◽  
Vol 2 (4) ◽  
pp. 176 ◽  
Author(s):  
Putri Iman Sari ◽  
Gunawan Gunawan ◽  
Ahmad Harjono

Discovery learning is a way of teaching that gives students the knowledge to construct a concept discovered through an experiment. The implementation of the experiment will be more effectively done by utilizing the media realized in computer technology, one of which uses virtual laboratory. This study aims to improve students' mastery of concepts of physics discovery aided by the application of learning virtual lab. The results showed that the increase in student mastery of concepts taught Using discovery learning assisted higher laboratoium more than the students who are not being treated. Mastery of concepts in each sub-material has increased significantly, except in the concept of electrical measuring instrument control group is superior to 1% compared to the experimental group.



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