{"id":8747,"date":"2017-07-03T14:16:10","date_gmt":"2017-07-03T12:16:10","guid":{"rendered":"https:\/\/opa.pl\/tests-and-measurements\/testing-and-measurements-of-transformers\/"},"modified":"2024-10-14T14:45:35","modified_gmt":"2024-10-14T12:45:35","slug":"testing-and-measurements-of-transformers","status":"publish","type":"page","link":"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/","title":{"rendered":"Testing and measurements of transformers"},"content":{"rendered":"<!--themify_builder_content-->\n<div id=\"themify_builder_content-8747\" data-postid=\"8747\" class=\"themify_builder_content themify_builder_content-8747 themify_builder tf_clear\">\n                    <div  data-css_id=\"jewl849\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_jewl849 tb_first tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_v8pv090 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_rbey470   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h1 style=\"text-align: center;\"><strong>TESTING AND MEASUREMENTS OF TRANSFORMERS<\/strong><\/h1>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_bsh5588 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_a7mx897 first\">\n                            <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_middle tb_col_count_2 tb_vlyt447\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_138c110 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_wvwm859   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h5><strong>We conduct technical inspections of power transformers:<\/strong><\/h5><ol><li>Group II &#8211; oil-type transformers with a capacity greater than 2.5 MVA up to 100 MVA and a maximum rated voltage of up to 110 kV.<\/li><li>Group III &#8211; oil-filled transformers with a power rating up to 2.5 MVA. <\/li><li>Group IV &#8211; dry-type and composite Insulation transformers.<\/li><\/ol>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_ngph848 last\">\n                    <!-- module image -->\n<div  class=\"module module-image tb_44q1861 image-top   tf_mw\" data-lazy=\"1\">\n        <div class=\"image-wrap tf_rel tf_mw\">\n            <img loading=\"lazy\" decoding=\"async\" width=\"1920\" height=\"1280\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2.jpg\" class=\"wp-post-image wp-image-8136\" title=\"badania-transformatorow2\" alt=\"badania-transformatorow2\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2.jpg 1920w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2-600x400.jpg 600w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2-300x200.jpg 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2-768x512.jpg 768w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2-1024x683.jpg 1024w\" sizes=\"auto, (max-width: 1920px) 100vw, 1920px\" \/>    \n        <\/div>\n    <!-- \/image-wrap -->\n    \n        <\/div>\n<!-- \/module image -->        <\/div>\n                    <\/div>\n        <!-- module text -->\n<div  class=\"module module-text tb_qsw4104   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h5><b>Types of technical tests performed on transformers by OPA S.A.:<\/b><\/h5>    <\/div>\n<\/div>\n<!-- \/module text --><!-- module accordion -->\n<div  class=\"module module-accordion tb_rbtg008 \" data-behavior=\"toggle\" data-lazy=\"1\">\n    \n    <ul class=\"ui module-accordion   tb_default_color\">\n            <li>\n            <div class=\"accordion-title tf_rel\">\n                <a href=\"#acc-rbtg008-0\" class=\"tb_title_accordion\" aria-controls=\"acc-rbtg008-0-content\" aria-expanded=\"false\">\n                                                            <span class=\"accordion-title-wrap\">Post-installation testing conducted at the transformer installation site.<\/span>                <\/a>\n            <\/div><!-- .accordion-title -->\n            <div id=\"acc-rbtg008-0-content\" data-id=\"acc-rbtg008-0\" aria-hidden=\"true\" class=\"accordion-content tf_hide tf_clearfix\">\n                        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_wuvu651\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column tb_nf7m651 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_fv7h651   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p>All transformers, regardless of their power ratings or nominal voltages , should undergo post-installation testing before being put into operation. The purpose of post-installation testing is to verify the transformer\u2019s suitability for service and to check whether any changes or defects occurred during transport, storage, and installation at the site that might affect its reliability in operation. <\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                    <\/div><!-- .accordion-content -->\n        <\/li>\n            <li>\n            <div class=\"accordion-title tf_rel\">\n                <a href=\"#acc-rbtg008-1\" class=\"tb_title_accordion\" aria-controls=\"acc-rbtg008-1-content\" aria-expanded=\"false\">\n                                                            <span class=\"accordion-title-wrap\">Periodic testing of transformers.<\/span>                <\/a>\n            <\/div><!-- .accordion-title -->\n            <div id=\"acc-rbtg008-1-content\" data-id=\"acc-rbtg008-1\" aria-hidden=\"true\" class=\"accordion-content tf_hide tf_clearfix\">\n                        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_9hd7651\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column tb_1bfd651 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_06c6652   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p>The purpose of periodic inspections is to systematically (periodically) check the technical condition of transformers. Such inspections determine the suitability (or lack thereof) of transformers for continued operation. Observing results over time allows for assessing the degree and rate of transformer degradation..  <\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                    <\/div><!-- .accordion-content -->\n        <\/li>\n            <li>\n            <div class=\"accordion-title tf_rel\">\n                <a href=\"#acc-rbtg008-2\" class=\"tb_title_accordion\" aria-controls=\"acc-rbtg008-2-content\" aria-expanded=\"false\">\n                                                            <span class=\"accordion-title-wrap\">Post-failure testing of transformers.<\/span>                <\/a>\n            <\/div><!-- .accordion-title -->\n            <div id=\"acc-rbtg008-2-content\" data-id=\"acc-rbtg008-2\" aria-hidden=\"true\" class=\"accordion-content tf_hide tf_clearfix\">\n                        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_tyhb652\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column tb_ou67652 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_acj6652   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p>Post-failure testing of transformers should be carried out after an automatic shutdown of the transformer or if there is a suspicion that an internal fault has occurred within the transformer.<\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                    <\/div><!-- .accordion-content -->\n        <\/li>\n            <li>\n            <div class=\"accordion-title tf_rel\">\n                <a href=\"#acc-rbtg008-3\" class=\"tb_title_accordion\" aria-controls=\"acc-rbtg008-3-content\" aria-expanded=\"false\">\n                                                            <span class=\"accordion-title-wrap\">Acceptance testing of repaired transformers after overhaul or repair.<\/span>                <\/a>\n            <\/div><!-- .accordion-title -->\n            <div id=\"acc-rbtg008-3-content\" data-id=\"acc-rbtg008-3\" aria-hidden=\"true\" class=\"accordion-content tf_hide tf_clearfix\">\n                        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_mpa0652\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column tb_do0u652 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_6yfa652   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p>After each overhaul or repair of transformers, control tests must be performed to confirm the transformer\u2019s suitability for being put back into operation.<\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                    <\/div><!-- .accordion-content -->\n        <\/li>\n        <\/ul>\n\n<\/div><!-- \/module accordion -->        <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"k5lu969\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_k5lu969 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_n3vx860 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_y35e840   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <h5 style=\"text-align: left;\"><strong>Depending on the type of technical inspection and the group to which a given transformer belongs, the scope of measurements and tests of transformers may vary. We can distinguish the following measurements and tests of transformers, which we perform in our company: <\/strong><\/h5>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_2 tb_ckgr879\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_cy3u946 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_49rv604   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <ul>\n<li><strong>External inspection of the transformer.<\/strong><\/li>\n<li><strong>Verification of the transformer&#8217;s equipment.<\/strong><\/li>\n<li><strong>Measurements of the transformer&#8217;s gear and verification of the connection group.<\/strong><\/li>\n<li><strong>Measurement of winding resistance.<\/strong><\/li>\n<li><strong>Measurement of insulation resistance of the windings.<\/strong><\/li>\n<li><strong>Measurement of magnetising currents.<\/strong><\/li>\n<li><strong>Verification of the tap changer.<\/strong><\/li>\n<li><strong>Measurement of the dynamic resistances of the on-load tap changer.<\/strong><\/li>\n<li><strong>Measurement of the on-load tap changer switching times.<\/strong><\/li>\n<li><strong>Measurement of winding capacitance and insulation loss factor (tg\u03b4).<\/strong><\/li>\n<li><strong>Testing the mechanical condition of windings using the Sweep Frequency Response Analysis (SFRA) method.<\/strong><\/li>\n<li><strong>Measurement of insulation moisture content using the FDS (Frequency Domain Spectroscopy) method.<\/strong><\/li>\n<\/ul>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column sub_column col4-2 tb_7cak033 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_76ik660   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <ul>\n<li><strong><a href=\"https:\/\/opa.pl\/laboratoria-pomiarowe\/laboratorium-wysokich-napiec\/\">Testing of oil properties<\/a>.<\/strong><\/li>\n<li><strong>Verification of the Buchholz relay operation.<\/strong><\/li>\n<li><strong>Verification of control panel operation, cooling system, tap changer drive, oil flow indicators, valves, and thermostats.<\/strong><\/li>\n<li><strong>Verification of the transformer venting, coolers, pumps, bushings, conservator, tap changer, current transformers, etc.<\/strong><\/li>\n<li><strong>Checking the silica gel in the dehumidifier.<\/strong><\/li>\n<li><strong>Verification of the electric shock protection of control cabinets.<\/strong><\/li>\n<li><strong><a href=\"https:\/\/opa.pl\/en\/tests-and-measurements\/thermal-imaging-research-and-measurements\/\">Thermal imaging inspection of<\/a> transformers.<\/strong><\/li>\n<li><strong>Study of transformer vat vibrations (vibroacoustic analysis of the transformer).<\/strong><\/li>\n<li><strong>Measurement of the active power consumption of the on-load tap changer motor.<\/strong><\/li>\n<li><strong>And others.<\/strong><\/li>\n<\/ul>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"e8sj478\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_e8sj478 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column tb_ol6g417 first\">\n                            <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-css_id=\"pd0p491\" data-lazy=\"1\" class=\"module_row themify_builder_row fullwidth_row_container tb_pd0p491 tf_w\">\n            <span  class=\"builder_row_cover tf_abs\" data-lazy=\"1\"><\/span>            <div class=\"row_inner col_align_top tb_col_count_2 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_fuid491 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_kwje491   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p style=\"text-align: left;\">JANUSZ PUBRAT:<\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_nv4w491\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col-full tb_12pv491 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_cg7r491   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"30%\">CALL:<\/td>\n<td style=\"text-align: left;\"><a href=\"tel:+48500030503\"><span style=\"text-decoration: underline;\">+48 500 030 503<\/span><\/a><\/td>\n<\/tr>\n<tr>\n<td>WRITE AT:<\/td>\n<td style=\"text-align: left;\">januszpubrat@opa.pl<\/td>\n<\/tr>\n<\/tbody>\n<\/table>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                <\/div>\n                    <div  data-lazy=\"1\" class=\"module_column tb-column col4-2 tb_efv4491 last\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_llzh491   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <p style=\"text-align: left;\">ANDRZEJ WIATEREK:<\/p>    <\/div>\n<\/div>\n<!-- \/module text -->        <div  data-lazy=\"1\" class=\"module_subrow themify_builder_sub_row tf_w col_align_top tb_col_count_1 tb_32oa491\">\n                <div  data-lazy=\"1\" class=\"module_column sub_column col-full tb_fl04491 first\">\n                    <!-- module text -->\n<div  class=\"module module-text tb_8nnp491   \" data-lazy=\"1\">\n        <div  class=\"tb_text_wrap\">\n        <table width=\"100%\">\n<tbody>\n<tr>\n<td width=\"30%\">CALL:<\/td>\n<td style=\"text-align: left;\"><a href=\"tel:+48513143659\"><span style=\"text-decoration: underline;\">+48 513 143 659<\/span><\/a><\/td>\n<\/tr>\n<tr>\n<td>WRITE AT:<\/td>\n<td style=\"text-align: left;\">andrzejwiaterek@opa.pl<\/td>\n<\/tr>\n<\/tbody>\n<\/table>    <\/div>\n<\/div>\n<!-- \/module text -->        <\/div>\n                    <\/div>\n                <\/div>\n                        <\/div>\n        <\/div>\n                        <div  data-lazy=\"1\" class=\"module_row themify_builder_row tb_r3a3609 tf_w\">\n                        <div class=\"row_inner col_align_top tb_col_count_1 tf_box tf_rel\">\n                        <div  data-lazy=\"1\" class=\"module_column tb-column col-full tb_keww088 first\">\n                    <!-- module gallery -->\n<div  class=\"module gallery module-gallery tb_uhz0590 layout-grid  \" data-lazy=\"1\">\n    <h3 class=\"module-title\"><b>GALLERY<\/b><\/h3><div class=\"module-gallery-grid\" style=\"--gald:4;--galt:4;--galm:4\">\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7537\" title=\"transformator_energetyczny\" alt=\"transformator_energetyczny\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny-150x150.png 150w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny-3x2.png 3w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_termowizja.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_termowizja-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7538\" title=\"transformator_termowizja\" alt=\"transformator_termowizja\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_termowizja-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_termowizja-150x150.png 150w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_termowizja-3x2.png 3w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/drgania_kadzi_transformatora.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/drgania_kadzi_transformatora-1024x671-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7539\" title=\"drgania_kadzi_transformatora\" alt=\"drgania_kadzi_transformatora\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/drgania_kadzi_transformatora-1024x671-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/drgania_kadzi_transformatora-150x150.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/kolaz_1.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/kolaz_1-562x1024-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7540\" title=\"kolaz_1\" alt=\"kolaz_1\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/kolaz_1-562x1024-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/kolaz_1-150x150.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/mostek_do_badania_transformatorow.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/mostek_do_badania_transformatorow-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7541\" title=\"mostek_do_badania_transformatorow\" alt=\"mostek_do_badania_transformatorow\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/mostek_do_badania_transformatorow-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/mostek_do_badania_transformatorow-150x150.png 150w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/mostek_do_badania_transformatorow-3x3.png 3w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/pobor_mocy_napedu_ppz.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/pobor_mocy_napedu_ppz-1024x680-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7542\" title=\"pobor_mocy_napedu_ppz\" alt=\"pobor_mocy_napedu_ppz\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/pobor_mocy_napedu_ppz-1024x680-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/pobor_mocy_napedu_ppz-150x150.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/probki_oleju.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/probki_oleju-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7543\" title=\"probki_oleju\" alt=\"probki_oleju\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/probki_oleju-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/probki_oleju-150x150.png 150w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n            <dl class=\"gallery-item\">\n            <dt class=\"gallery-icon\">\n            <a data-title=\"\" title=\"\" href=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/przebiegi_oscylograficzne_ppz.png\" data-rel=\"tb_uhz0590\" class=\"themify_lightbox\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/przebiegi_oscylograficzne_ppz-1024x905-300x300.png\" width=\"300\" height=\"300\" class=\"wp-post-image wp-image-7544\" title=\"przebiegi_oscylograficzne_ppz\" alt=\"przebiegi_oscylograficzne_ppz\" srcset=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/przebiegi_oscylograficzne_ppz-1024x905-300x300.png 300w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/przebiegi_oscylograficzne_ppz-150x150.png 150w, https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/przebiegi_oscylograficzne_ppz-1024x905-3x2.png 3w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a>            <\/dt>\n                    <\/dl>\n    <\/div>\n<\/div>\n<!-- \/module gallery -->        <\/div>\n                        <\/div>\n        <\/div>\n        <\/div>\n<!--\/themify_builder_content-->\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>TESTING AND MEASUREMENTS OF TRANSFORMERS We conduct technical inspections of power transformers: Group II &#8211; oil-type transformers with a capacity greater than 2.5 MVA up to 100 MVA and a maximum rated voltage of up to 110 kV. Group III &#8211; oil-filled transformers with a power rating up to 2.5 MVA. Group IV &#8211; dry-type [&hellip;]<\/p>\n","protected":false},"author":66,"featured_media":0,"parent":8674,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-8747","page","type-page","status-publish","hentry","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Testing and measurements of transformers - OPA S.A.<\/title>\n<meta name=\"description\" content=\"We conduct testing and measurements of power transformers, post-assembly on-site, periodic, post-failure, and acceptance testing of transformers undergoing repairs. We provide comprehensive diagnostics of transformers.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Testing and measurements of transformers - OPA S.A.\" \/>\n<meta property=\"og:description\" content=\"We conduct testing and measurements of power transformers, post-assembly on-site, periodic, post-failure, and acceptance testing of transformers undergoing repairs. We provide comprehensive diagnostics of transformers.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/\" \/>\n<meta property=\"og:site_name\" content=\"OPA S.A.\" \/>\n<meta property=\"article:modified_time\" content=\"2024-10-14T12:45:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/07\/transformator_energetyczny-150x150.png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/\",\"url\":\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/\",\"name\":\"Testing and measurements of transformers - OPA S.A.\",\"isPartOf\":{\"@id\":\"https:\/\/opa.pl\/en\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/opa.pl\/en\/tests-and-measurements\/testing-and-measurements-of-transformers\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/opa.pl\/wp-content\/uploads\/2017\/08\/badania-transformatorow2.jpg\",\"datePublished\":\"2017-07-03T12:16:10+00:00\",\"dateModified\":\"2024-10-14T12:45:35+00:00\",\"description\":\"We conduct testing and measurements of power transformers, post-assembly on-site, periodic, post-failure, and acceptance testing of transformers undergoing repairs. 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The purpose of post-installation testing is to verify the transformer\u2019s suitability for service and to check whether any changes or defects occurred during transport, storage, and installation at the site that might affect its reliability in operation. <\/p><\/li><li><h4>Periodic testing of transformers.<\/h4><p>The purpose of periodic inspections is to systematically (periodically) check the technical condition of transformers. Such inspections determine the suitability (or lack thereof) of transformers for continued operation. Observing results over time allows for assessing the degree and rate of transformer degradation.. <\/p><\/li><li><h4>Post-failure testing of transformers.<\/h4><p>Post-failure testing of transformers should be carried out after an automatic shutdown of the transformer or if there is a suspicion that an internal fault has occurred within the transformer.<\/p><\/li><li><h4>Acceptance testing of repaired transformers after overhaul or repair.<\/h4><p>After each overhaul or repair of transformers, control tests must be performed to confirm the transformer\u2019s suitability for being put back into operation.<\/p><\/li><\/ul>\n<p>All transformers, regardless of their power ratings or nominal voltages , should undergo post-installation testing before being put into operation. The purpose of post-installation testing is to verify the transformer\u2019s suitability for service and to check whether any changes or defects occurred during transport, storage, and installation at the site that might affect its reliability in operation. <\/p>\n<p>The purpose of periodic inspections is to systematically (periodically) check the technical condition of transformers. Such inspections determine the suitability (or lack thereof) of transformers for continued operation. Observing results over time allows for assessing the degree and rate of transformer degradation.. <\/p>\n<p>Post-failure testing of transformers should be carried out after an automatic shutdown of the transformer or if there is a suspicion that an internal fault has occurred within the transformer.<\/p>\n<p>After each overhaul or repair of transformers, control tests must be performed to confirm the transformer\u2019s suitability for being put back into operation.<\/p>\n<h5 style=\"text-align: left;\"><strong>Depending on the type of technical inspection and the group to which a given transformer belongs, the scope of measurements and tests of transformers may vary. We can distinguish the following measurements and tests of transformers, which we perform in our company: <\/strong><\/h5>\n<ul> <li><strong>External inspection of the transformer.<\/strong><\/li> <li><strong>Verification of the transformer's equipment.<\/strong><\/li> <li><strong>Measurements of the transformer's gear and verification of the connection group.<\/strong><\/li> <li><strong>Measurement of winding resistance.<\/strong><\/li> <li><strong>Measurement of insulation resistance of the windings.<\/strong><\/li> <li><strong>Measurement of magnetising currents.<\/strong><\/li> <li><strong>Verification of the tap changer.<\/strong><\/li> <li><strong>Measurement of the dynamic resistances of the on-load tap changer.<\/strong><\/li> <li><strong>Measurement of the on-load tap changer switching times.<\/strong><\/li> <li><strong>Measurement of winding capacitance and insulation loss factor (tg\u03b4).<\/strong><\/li> <li><strong>Testing the mechanical condition of windings using the Sweep Frequency Response Analysis (SFRA) method.<\/strong><\/li> <li><strong>Measurement of insulation moisture content using the FDS (Frequency Domain Spectroscopy) method.<\/strong><\/li> <\/ul>\n<ul> <li><strong><a href=\"https:\/\/opa.pl\/laboratoria-pomiarowe\/laboratorium-wysokich-napiec\/\">Testing of oil properties<\/a>.<\/strong><\/li> <li><strong>Verification of the Buchholz relay operation.<\/strong><\/li> <li><strong>Verification of control panel operation, cooling system, tap changer drive, oil flow indicators, valves, and thermostats.<\/strong><\/li> <li><strong>Verification of the transformer venting, coolers, pumps, bushings, conservator, tap changer, current transformers, etc.<\/strong><\/li> <li><strong>Checking the silica gel in the dehumidifier.<\/strong><\/li> <li><strong>Verification of the electric shock protection of control cabinets.<\/strong><\/li> <li><strong><a href=\"https:\/\/opa.pl\/en\/tests-and-measurements\/thermal-imaging-research-and-measurements\/\">Thermal imaging inspection of<\/a> transformers.<\/strong><\/li> <li><strong>Study of transformer vat vibrations (vibroacoustic analysis of the transformer).<\/strong><\/li> <li><strong>Measurement of the active power consumption of the on-load tap changer motor.<\/strong><\/li> <li><strong>And others.<\/strong><\/li> <\/ul>\n<p style=\"text-align: left;\">JANUSZ PUBRAT:<\/p>\n<table width=\"100%\"> <tbody> <tr> <td width=\"30%\">CALL:<\/td> <td style=\"text-align: left;\"><a href=\"tel:+48500030503\">+48 500 030 503<\/a><\/td> <\/tr> <tr> <td>WRITE AT:<\/td> <td style=\"text-align: left;\">januszpubrat@opa.pl<\/td> <\/tr> <\/tbody> <\/table>\n<p style=\"text-align: left;\">ANDRZEJ WIATEREK:<\/p>\n<table width=\"100%\"> <tbody> <tr> <td width=\"30%\">CALL:<\/td> <td style=\"text-align: left;\"><a href=\"tel:+48513143659\">+48 513 143 659<\/a><\/td> <\/tr> <tr> <td>WRITE AT:<\/td> <td style=\"text-align: left;\">andrzejwiaterek@opa.pl<\/td> <\/tr> <\/tbody> <\/table>\n<h3><b>GALLERY<\/b><\/h3>[gallery ids=\"674,675,676,677,678,679,680,681\"]","_links":{"self":[{"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/pages\/8747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/users\/66"}],"replies":[{"embeddable":true,"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/comments?post=8747"}],"version-history":[{"count":5,"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/pages\/8747\/revisions"}],"predecessor-version":[{"id":9270,"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/pages\/8747\/revisions\/9270"}],"up":[{"embeddable":true,"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/pages\/8674"}],"wp:attachment":[{"href":"https:\/\/opa.pl\/en\/wp-json\/wp\/v2\/media?parent=8747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}