[vc_row][vc_column][vc_column_text]<\/p>\n
Problems are very common in electrical installations. These include machinery stoppages, tripped protective devices and wear on electronic devices – such as industrial robots and variable-speed drives – that are sensitive to disturbances in the grid.<\/strong><\/span><\/p>\n [vc_empty_space height=”10px”][\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=”1786″ img_size=”large” alignment=”center”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text][vc_empty_space height=”20px”]<\/p>\n Poor power quality voltage in an installation can result from internal or external causes. If your installation is too far from the transformer substatio<\/strong>n, for example, your voltage may be abnormally low, causing some equipment to stop randomly. If, on the other hand, you are too close to the transformer substation, your voltage could be abnormally high. This condition is termed permanent overvoltage, and it can damage sensitive electronic components.<\/p>\n [vc_empty_space height=”5px”]<\/p>\n Measuring the signal quality not only entails evaluating the voltage value, but other electrical parameters as well, such as the frequency, flicker, harmonics, total harmonic distortion (THD) in voltage and current, imbalance between phases, and quality events such as overvoltages, voltage dips and outages.<\/strong><\/span><\/p>\n [vc_empty_space height=”5px”]<\/p>\n The problems that may appear in an electrical installation are very different. To assess the power quality, you need to consider a series of variables, not just the amplitude of the voltage.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”2\/3″][vc_column_text][vc_empty_space height=”40px”]<\/p>\n The EN50160 quality standard, based on statistical calculations of values that are generally recorded every 10 minutes, indicates the limits allowed in each of the recorded variables to ensure power quality. This is regardless of whether the power is provided by an electric utility or any other source of energy.<\/strong><\/p>\n [vc_empty_space height=”20px”][\/vc_column_text][\/vc_column][vc_column width=”1\/3″][vc_column_text][vc_empty_space height=”40px”][\/vc_column_text][vc_single_image image=”23932″ alignment=”center” css=”.vc_custom_1655202536959{border-radius: 1px !important;}”][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=”24462″ img_size=”full” alignment=”center” onclick=”zoom”][vc_column_text]<\/p>\n Quality events graph<\/strong><\/span><\/p>\n [vc_empty_space height=”20px”]<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/2″][vc_column_text]Depending on the electrical parameter, the limits required by the standard and the analysis period for acceptance may vary. <\/strong><\/p>\n For example, for 230 VAC and 50 Hz networks:<\/p>\n \u2022\u00a0 The frequency values recorded every 10 seconds must be between 49.5-50.5 Hz 99.5% of the time and between 47-52 Hz 100% of the time.<\/p>\n \u2022\u00a0 95% of the phase-neutral voltage values recorded every 10 minutes must be between 207-253 V and 100% of the values between 195.5-253 V.<\/p>\n \u2022\u00a0 95% of the phase-phase voltage values recorded every 10 minutes must be between 358.53-438.21 V and 100% of the values between 338.62-438.21 V.[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_column_text]\u2022\u00a0 As for the reading, the U2 imbalance between phases (between the negative phase component U2 and the positive phase component U1) must be at the most 2% in 95% of the 10-minute weighted RMS values.<\/p>\n \u2022\u00a0 Quality events must be RMS values and last at least 1\u20442 cycle (10 ms in 50 Hz networks and 12 ms in 60 Hz networks). Events are classified as overvoltages, dips or interruptions, based on the maximum or minimum value they reached.<\/p>\n \u2022\u00a0 Quality events can be grouped in tables based on their duration, and displayed in different types of graphs based on their amplitude and duration.[\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text][vc_empty_space height=”30px”][\/vc_column_text][vc_single_image image=”24609″ img_size=”full” alignment=”center” onclick=”zoom”][vc_column_text]<\/p>\n ITIC curve<\/strong><\/span><\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text][vc_empty_space height=”5px”]<\/p>\n Discover our complete range of power quality power analyzers to check the quality of the voltage at the point of installation.<\/span><\/strong><\/span><\/p>\n [vc_empty_space height=”20px”][\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column width=”1\/2″][vc_single_image image=”24424″ img_size=”full” alignment=”center” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/circutor.com\/en\/products\/measurement-and-control\/portable-power-analyzers\/portable-power-analyzer\/serie\/myebox\/”][vc_column_text]MYeBOX. <\/strong>Portable power analyzer with recording of quality events and transients<\/span>[\/vc_column_text][\/vc_column][vc_column width=”1\/2″][vc_single_image image=”24432″ img_size=”full” alignment=”center” onclick=”custom_link” img_link_target=”_blank” link=”https:\/\/circutor.com\/en\/products\/measurement-and-control\/fixed-power-analyzers\/power-quality-analyzers\/serie\/cvm-a\/”][vc_column_text]CVM-A1500. <\/strong>Power quality analyzers with recording of quality events and transients Calibration Certificate (IEC 61000-4-30 Ed.2) Class A<\/span>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n","protected":false},"excerpt":{"rendered":" [vc_row][vc_column][vc_column_text] Problems are very common in electrical installations. These include machinery stoppages, tripped protective devices and wear on electronic devices – such as industrial robots and variable-speed drives – that are sensitive to disturbances in the grid. [vc_empty_space height=”10px”][\/vc_column_text][\/vc_column][\/vc_row][vc_row][vc_column][vc_single_image image=”1786″ img_size=”large” alignment=”center”][\/vc_column][\/vc_row][vc_row][vc_column][vc_column_text][vc_empty_space height=”20px”] Poor power quality voltage in an installation can result from internal or […]<\/p>\n","protected":false},"author":6,"featured_media":8451,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[3521],"tags":[3580,3578],"acf":[],"yoast_head":"\nApplicable regulation<\/strong><\/h3>\n