{"id":2557,"date":"2026-07-15T15:00:00","date_gmt":"2026-07-15T07:00:00","guid":{"rendered":"https:\/\/cnbygele.com\/?p=2557"},"modified":"2026-08-24T18:10:16","modified_gmt":"2026-08-24T10:10:16","slug":"data-center-neutral-harmonics-apf-selection","status":"publish","type":"post","link":"https:\/\/cnbygele.com\/vi\/blog\/data-center-neutral-harmonics-apf-selection\/","title":{"rendered":"S\u00f3ng h\u00e0i trung t\u00ednh trong Trung t\u00e2m d\u1eef li\u1ec7u: H\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn APF 3P4W"},"content":{"rendered":"<p style=\"margin:0 0 16px;line-height:1.7\"><strong>S\u00f3ng h\u00e0i trung t\u00ednh c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u<\/strong> l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 3 pha 4 d\u00e2y (3P4W) ri\u00eang bi\u1ec7t. C\u00e1c t\u1ea3i IT m\u1ed9t pha, c\u00e1c nh\u00e1nh PDU v\u00e0 nhi\u1ec1u ngu\u1ed3n c\u1ea5p \u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi b\u1ed9 l\u01b0u \u0111i\u1ec7n (UPS) c\u00f3 th\u1ec3 t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n h\u00e0i b\u1eadc ba\u2014\u0111\u1eb7c bi\u1ec7t l\u00e0 b\u1eadc 3, 9 v\u00e0 15\u2014c\u1ed9ng d\u1ed3n v\u00e0o d\u00e2y trung t\u00ednh thay v\u00ec tri\u1ec7t ti\u00eau l\u1eabn nhau gi\u1eefa c\u00e1c pha. D\u00f2ng \u0111i\u1ec7n c\u00e1c pha c\u00f3 th\u1ec3 \u1edf m\u1ee9c ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c trong khi d\u00e2y d\u1eabn trung t\u00ednh, thanh c\u00e1i li\u00ean l\u1ea1c ho\u1eb7c m\u00e1y bi\u1ebfn \u00e1p l\u1ea1i tr\u1edf th\u00e0nh y\u1ebfu t\u1ed1 gi\u1edbi h\u1ea1n.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">H\u01b0\u1edbng d\u1eabn n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c kh\u1ea3o s\u00e1t d\u00f2ng \u0111i\u1ec7n trung t\u00ednh v\u00e0 l\u1ef1a ch\u1ecdn b\u1ed9 l\u1ecdc t\u00edch c\u1ef1c (APF) 3 pha 4 d\u00e2y (3P4W). \u0110\u1ec3 bi\u1ebft th\u00eam chi\u1ebfn l\u01b0\u1ee3c v\u1ec1 APF\/SVG cho trung t\u00e2m d\u1eef li\u1ec7u n\u00f3i chung, h\u00e3y xem <a href=\"https:\/\/cnbygele.com\/vi\/blog\/svg-apf-data-center-power-quality-guide\/\">H\u01b0\u1edbng d\u1eabn APF v\u00e0 SVG cho trung t\u00e2m d\u1eef li\u1ec7u<\/a>.<\/p>\n<nav class=\"b2b-toc\" style=\"background:#f5f8fa;padding:16px 20px;border-radius:8px;margin:0 0 24px\">\n<h2 style=\"margin:42px 0 14px\">M\u1ee5c l\u1ee5c<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"#part-1-why-is-neutral-harmonic-current-a-separate-data-center-problem\">Ph\u1ea7n 1. T\u1ea1i sao d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i trung t\u00ednh l\u1ea1i l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ri\u00eang bi\u1ec7t c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-2-what-must-be-measured-before-selecting-a-3p4w-apf\">Ph\u1ea7n 2. C\u1ea7n \u0111o l\u01b0\u1eddng nh\u1eefng g\u00ec tr\u01b0\u1edbc khi ch\u1ecdn m\u1ed9t APF 3P4W?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-3-how-do-findings-become-a-selection-basis\">Ph\u1ea7n 3. C\u00e1c ph\u00e1t hi\u1ec7n tr\u1edf th\u00e0nh c\u01a1 s\u1edf l\u1ef1a ch\u1ecdn nh\u01b0 th\u1ebf n\u00e0o?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-4-what-makes-an-apf-suitable-for-3p4w-neutral-harmonics\">Ph\u1ea7n 4. \u0110i\u1ec1u g\u00ec l\u00e0m cho APF ph\u00f9 h\u1ee3p v\u1edbi s\u00f3ng h\u00e0i trung t\u00ednh 3P4W?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-5-where-should-the-apf-be-installed-and-commissioned\">Ph\u1ea7n 5. APF n\u00ean \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u00e0 ch\u1ea1y th\u1eed \u1edf \u0111\u00e2u?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-6-is-svg-an-alternative-for-neutral-harmonics\">Ph\u1ea7n 6. SVG c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf cho s\u00f3ng h\u00e0i trung t\u00ednh kh\u00f4ng?<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"#part-7-what-belongs-in-an-rfq-and-what-is-outside-fit\">Ph\u1ea7n 7. Nh\u1eefng g\u00ec thu\u1ed9c v\u1ec1 RFQ v\u00e0 nh\u1eefng g\u00ec n\u1eb1m ngo\u00e0i ph\u1ea1m vi?<\/a><\/li>\n<\/ul>\n<\/nav>\n<figure style=\"margin:26px 0;text-align:center\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter.webp\" alt=\"T\u1ee7 AHF cho trung t\u00e2m d\u1eef li\u1ec7u nh\u1eb1m gi\u1ea3m s\u00f3ng h\u00e0i trung t\u00ednh\" class=\"wp-image-1605\" srcset=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter.webp 800w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-300x300.webp 300w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-150x150.webp 150w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-768x768.webp 768w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-500x500.webp 500w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-600x600.webp 600w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/2.1-AHF-Active-Harmonic-Filter-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption>Thi\u1ebft b\u1ecb AHF c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem x\u00e9t khi d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i trung t\u00ednh \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c \u0111\u00f2i h\u1ecfi ph\u1ea3i b\u00f9 t\u00edch c\u1ef1c.<\/figcaption><\/figure>\n<h2 style=\"margin:42px 0 14px\" id=\"part-1-why-is-neutral-harmonic-current-a-separate-data-center-problem\">Ph\u1ea7n 1. T\u1ea1i sao d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i trung t\u00ednh l\u1ea1i l\u00e0 m\u1ed9t v\u1ea5n \u0111\u1ec1 ri\u00eang bi\u1ec7t c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Trong h\u1ec7 th\u1ed1ng 3 pha 4 d\u00e2y \u0111\u1ed1i x\u1ee9ng, c\u00e1c d\u00f2ng \u0111i\u1ec7n c\u01a1 b\u1ea3n tri\u1ec7t ti\u00eau l\u1eabn nhau \u1edf d\u00e2y trung t\u00ednh. C\u00e1c s\u00f3ng h\u00e0i b\u1eadc ba l\u00e0 th\u00e0nh ph\u1ea7n th\u1ee9 t\u1ef1 kh\u00f4ng. D\u01b0\u1edbi t\u1ea3i phi tuy\u1ebfn \u0111\u1ed1i x\u1ee9ng, ch\u00fang v\u1eabn gi\u1eef nguy\u00ean pha tr\u00ean c\u1ea3 ba pha v\u00e0 do \u0111\u00f3 c\u1ed9ng d\u1ed3n t\u1ea1i d\u00e2y trung t\u00ednh.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Tri\u1ec7u ch\u1ee9ng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Nh\u1eefng \u0111i\u1ec1u v\u1eadn h\u00e0nh vi\u00ean th\u01b0\u1eddng th\u1ea5y<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Ph\u00e9p \u0111o c\u00f3 th\u1ec3 ti\u1ebft l\u1ed9 \u0111i\u1ec1u g\u00ec<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Qu\u00e1 nhi\u1ec7t d\u00e2y trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ea3i pha tr\u00f4ng b\u00ecnh th\u01b0\u1eddng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n RMS trung t\u00ednh t\u0103ng cao<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Aptomat nh\u1ea3y kh\u00f4ng r\u00f5 nguy\u00ean nh\u00e2n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nghi ng\u1edd qu\u00e1 t\u1ea3i tr\u00ean m\u1ed9t pha<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u00e0m l\u01b0\u1ee3ng s\u00f3ng h\u00e0i b\u1eadc ba cao v\u1edbi THDi pha v\u1eeba ph\u1ea3i<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110i\u1ec3m n\u00f3ng m\u00e1y bi\u1ebfn \u00e1p<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ea3i CNTT trong \u0111\u1ecbnh m\u1ee9c nh\u00e3n m\u00e1y<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u01b0\u1eddng d\u00e2y trung t\u00ednh mang d\u00f2ng s\u00f3ng h\u00e0i<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u1ea3nh b\u00e1o PDU tr\u00ean thi\u1ebft b\u1ecb gi\u00e1m s\u00e1t d\u00e2y trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1eadp ch\u1eddn v\u00e0o th\u1eddi \u0111i\u1ec3m t\u1ea3i CNTT \u0111\u1ea1t \u0111\u1ec9nh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u01a1n h\u00e0ng th\u1ee9 3\/th\u00e1ng 9\/ng\u00e0y 15 t\u0103ng l\u00ean c\u00f9ng v\u1edbi ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u00e1y ch\u1ee7<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 k\u1ef9 thu\u1eadt c\u1ee7a Schneider Electric l\u01b0u \u00fd r\u1eb1ng d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i b\u1eadc ba cao c\u00f3 th\u1ec3 t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n trung t\u00ednh cao ngay c\u1ea3 khi t\u1ea3i c\u00e1c pha c\u00f3 v\u1ebb c\u00e2n b\u1eb1ng. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c h\u01b0\u1edbng d\u1eabn t\u1eadp trung v\u00e0o d\u00e2y trung t\u00ednh kh\u00f4ng \u0111\u01b0\u1ee3c g\u1ed9p chung v\u00e0o m\u1ed9t b\u00e0i vi\u1ebft t\u1ed5ng qu\u00e1t v\u1ec1 \u201cs\u00f3ng h\u00e0i trung t\u00e2m d\u1eef li\u1ec7u\u201d.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ec3 bi\u1ebft ng\u1eef c\u1ea3nh c\u01a1 s\u1edf v\u1eadt ch\u1ea5t, h\u00e3y xem CNBYG <a href=\"https:\/\/cnbygele.com\/vi\/solutions\/data-center\/\">Gi\u1ea3i ph\u00e1p Trung t\u00e2m d\u1eef li\u1ec7u<\/a> trang.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-2-what-must-be-measured-before-selecting-a-3p4w-apf\">Ph\u1ea7n 2. C\u1ea7n \u0111o l\u01b0\u1eddng nh\u1eefng g\u00ec tr\u01b0\u1edbc khi ch\u1ecdn m\u1ed9t APF 3P4W?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1eaft \u0111\u1ea7u b\u1eb1ng c\u00e1c ph\u00e9p \u0111o c\u00f3 c\u0103n ch\u1ec9nh th\u1eddi gian t\u1ea1i thanh c\u00e1i, PDU ho\u1eb7c t\u1ee7 \u0111i\u1ec7n b\u1ecb \u1ea3nh h\u01b0\u1edfng\u2014kh\u00f4ng ch\u1ec9 t\u1ea1i \u0111i\u1ec3m \u0111\u1ea5u n\u1ed1i chung (PCC) c\u1ee7a \u0111i\u1ec7n l\u1ef1c.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">\u0110o l\u01b0\u1eddng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 quan tr\u1ecdng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng pha<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Thi\u1ebft l\u1eadp m\u1ee9c t\u1ea3i v\u00e0 h\u1ec7 s\u1ed1 \u0111\u1ed3ng th\u1eddi<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n hi\u1ec7u d\u1ee5ng trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">X\u00e1c nh\u1eadn xem d\u00e2y trung t\u00ednh c\u00f3 ph\u1ea3i l\u00e0 \u0111\u01b0\u1eddng ch\u1ecbu t\u1ea3i hay kh\u00f4ng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c b\u1eadc s\u00f3ng h\u00e0i \u0111\u01a1n l\u1ebb<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u00e1ch s\u00f3ng h\u00e0i b\u1eadc ba kh\u1ecfi c\u00e1c d\u1ea1ng m\u00e9o m\u00f3 t\u00edn hi\u1ec7u kh\u00e1c<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">THDi v\u00e0 TDD v\u1edbi ph\u01b0\u01a1ng ph\u00e1p x\u00e1c \u0111\u1ecbnh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u1ed7 tr\u1ee3 so s\u00e1nh k\u1ebf ho\u1ea1ch<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a UPS<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c ch\u1ebf \u0111\u1ed9 tr\u1ef1c tuy\u1ebfn, sinh th\u00e1i ho\u1eb7c h\u1ed7n h\u1ee3p c\u00f3 th\u1ec3 thay \u0111\u1ed5i ph\u1ed5<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u1ef1 ki\u1ec7n b\u01b0\u1edbc t\u1ea3i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ghi l\u1ea1i c\u00e1c thao t\u00e1c l\u00e0m m\u1edbi m\u00e1y ch\u1ee7, t\u00e1c v\u1ee5 h\u00e0ng lo\u1ea1t v\u00e0 ki\u1ec3m tra truy\u1ec1n t\u1ea3i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">H\u01b0\u1edbng d\u1eabn gi\u00e1m s\u00e1t trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a Fluke khuy\u1ebfn ngh\u1ecb ki\u1ec3m tra c\u00e1c d\u00e2y pha v\u00e0 d\u00e2y trung t\u00ednh \u0111\u1ed3ng th\u1eddi xem x\u00e9t b\u1eadc s\u00f3ng h\u00e0i, thay v\u00ec ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t gi\u00e1 tr\u1ecb t\u1ed5ng m\u00e9o s\u00f3ng h\u00e0i (THD) t\u1ed5ng th\u1ec3. H\u00e3y ghi l\u1ea1i \u00edt nh\u1ea5t m\u1ed9t kho\u1ea3ng th\u1eddi gian v\u1eadn h\u00e0nh ti\u00eau bi\u1ec3u bao g\u1ed3m t\u1ea3i CNTT b\u00ecnh th\u01b0\u1eddng, ho\u1ea1t \u0111\u1ed9ng b\u1ea3o tr\u00ec, v\u00e0 b\u1ea5t k\u1ef3 qu\u00e1 tr\u00ecnh chuy\u1ec3n m\u1ea1ch UPS ho\u1eb7c ki\u1ec3m tra d\u1ef1 ph\u00f2ng n\u00e0o l\u00e0m thay \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n nh\u00e1nh.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter.webp\" alt=\"B\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i t\u00edch c\u1ef1c cho t\u1ea3i t\u1ee7 \u0111i\u1ec7n trung th\u1ebf\/t\u1ee7 ph\u00e2n ph\u1ed1i trung t\u00e2m d\u1eef li\u1ec7u\" class=\"wp-image-1312\" srcset=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter.webp 800w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-300x300.webp 300w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-150x150.webp 150w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-768x768.webp 768w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-500x500.webp 500w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-600x600.webp 600w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/5.AHF-Active-Harmonic-Filter-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption>B\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i ch\u1ee7 \u0111\u1ed9ng n\u00ean \u0111\u01b0\u1ee3c \u0111\u1ecbnh th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean d\u1eef li\u1ec7u d\u00f2ng \u0111i\u1ec7n trung t\u00ednh v\u00e0 b\u1ea3ng \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c.<\/figcaption><\/figure>\n<h2 style=\"margin:42px 0 14px\" id=\"part-3-how-do-findings-become-a-selection-basis\">Ph\u1ea7n 3. C\u00e1c ph\u00e1t hi\u1ec7n tr\u1edf th\u00e0nh c\u01a1 s\u1edf l\u1ef1a ch\u1ecdn nh\u01b0 th\u1ebf n\u00e0o?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">H\u00e3y chuy\u1ec3n \u0111\u1ed5i t\u1ec7p \u0111o l\u01b0\u1eddng th\u00e0nh m\u1ed9t b\u1ea3n ghi quy\u1ebft \u0111\u1ecbnh tr\u01b0\u1edbc khi b\u1ea5t k\u1ef3 b\u00e1o gi\u00e1 n\u00e0o c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c so s\u00e1nh.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u00ecm ki\u1ebfm<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Di\u1ec5n gi\u1ea3i k\u1ef9 thu\u1eadt<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">B\u01b0\u1edbc ti\u1ebfp theo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Gi\u00e1 tr\u1ecb hi\u1ec7u d\u1ee5ng (RMS) trung t\u00ednh v\u01b0\u1ee3t qu\u00e1 bi\u00ean \u0111\u1ed9 l\u1eadp k\u1ebf ho\u1ea1ch c\u1ee7a d\u00e2y d\u1eabn<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n b\u1eadc ba l\u00e0 v\u1eadt ch\u1ea5t<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">X\u00e1c nh\u1eadn \u0111\u1ecbnh m\u1ee9c d\u00e2y d\u1eabn v\u00e0 thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7 ph\u00eda ngu\u1ed3n<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n ch\u00ednh 3\/9\/15 b\u1eadc cao<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ea3i \u0111i\u1ec7n t\u1eed m\u1ed9t pha c\u1ed5 \u0111i\u1ec3n<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u00e1nh gi\u00e1 APF 3 pha 4 d\u00e2y c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd trung t\u00ednh t\u01b0\u1eddng minh<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">THDi pha cao nh\u01b0ng kh\u00f4ng g\u00e2y c\u0103ng th\u1eb3ng trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">V\u1ea5n \u0111\u1ec1 s\u00f3ng h\u00e0i c\u00f3 th\u1ec3 kh\u00f4ng b\u1ecb chi\u1ebfm \u01b0u th\u1ebf b\u1edfi s\u00f3ng h\u00e0i b\u1eadc ba<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ki\u1ec3m tra l\u1ea1i h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n, c\u00e2n b\u1eb1ng t\u1ea3i v\u00e0 \u0111i\u1ec3m \u0111o<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t th\u1ea5p v\u1edbi s\u00f3ng h\u00e0i v\u1eeba ph\u1ea3i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">V\u1ea5n \u0111\u1ec1 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u00f3 th\u1ec3 l\u00e0 ri\u00eang bi\u1ec7t<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ec9 xem x\u00e9t SVG sau khi \u0111\u00e3 lo\u1ea1i tr\u1eeb nhu c\u1ea7u h\u00e0i trung t\u00ednh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\"><strong>Quan tr\u1ecdng:<\/strong> M\u1ed9t t\u1ef7 l\u1ec7 THD trung t\u00ednh cao kh\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u1ec1 kh\u1ea3 n\u0103ng mang d\u00f2ng (ampacity) trung t\u00ednh cao (Ngu\u1ed3n: C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 d\u00e2y d\u1eabn trung t\u00ednh c\u1ee7a Eaton). C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 d\u00e2y d\u1eabn trung t\u00ednh c\u1ee7a Eaton ph\u00e2n bi\u1ec7t t\u1ef7 l\u1ec7 m\u00e9o d\u1ea1ng v\u1edbi r\u1ee7i ro gia nhi\u1ec7t RMS th\u1ef1c t\u1ebf. H\u00e3y k\u00edch th\u01b0\u1edbc v\u00e0 b\u1ea3o v\u1ec7 c\u00e1c d\u00e2y d\u1eabn b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n RMS \u0111\u00e3 \u0111o v\u00e0 ph\u01b0\u01a1ng ph\u00e1p nghi\u00ean c\u1ee9u c\u1ee7a d\u1ef1 \u00e1n, ch\u1ee9 kh\u00f4ng ch\u1ec9 d\u1ef1a v\u00e0o m\u1ed9t con s\u1ed1 THD \u0111\u00e1ng b\u00e1o \u0111\u1ed9ng \u0111\u01a1n l\u1ebb.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-4-what-makes-an-apf-suitable-for-3p4w-neutral-harmonics\">Ph\u1ea7n 4. \u0110i\u1ec1u g\u00ec l\u00e0m cho APF ph\u00f9 h\u1ee3p v\u1edbi s\u00f3ng h\u00e0i trung t\u00ednh 3P4W?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">M\u1ed9t nh\u00e3n b\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i chung l\u00e0 ch\u01b0a \u0111\u1ee7. M\u1ed9t cu\u1ed9c th\u1ea3o lu\u1eadn v\u1ec1 APF trung t\u00e2m d\u1eef li\u1ec7u 3P4W ph\u1ea3i x\u00e1c nh\u1eadn:<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Y\u00eau c\u1ea7u APF<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u1ea1i sao ng\u01b0\u1eddi mua n\u00ean x\u00e1c th\u1ef1c n\u00f3<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Kh\u1ea3 n\u0103ng b\u00f9 b\u1ed1n d\u00e2y \/ trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">D\u00f2ng \u0111i\u1ec7n b\u1eadc ba ph\u1ea3i \u0111\u01b0\u1ee3c gi\u1ea3i quy\u1ebft t\u1ea1i \u0111\u01b0\u1eddng trung t\u00ednh<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u1ed3i th\u01b0\u1eddng d\u00f2ng \u0111i\u1ec7n trung t\u00ednh \u0111\u1ecbnh m\u1ee9c<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u00e0i li\u1ec7u c\u1ee7a nh\u00e0 cung c\u1ea5p ph\u1ea3i kh\u1edbp v\u1edbi nhu c\u1ea7u \u0111\u00e3 \u0111o l\u01b0\u1eddng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u01a1 \u0111\u1ed3 m\u00e1y bi\u1ebfn d\u00f2ng tr\u00ean d\u00e2y pha v\u00e0 d\u00e2y trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u1eb7t sai v\u1ecb tr\u00ed bi\u1ebfn d\u00f2ng \u0111i\u1ec7n l\u00e0m m\u1ea5t hi\u1ec7u qu\u1ea3 b\u00f9<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u01a1 \u0111\u1ed3 t\u01b0\u01a1ng th\u00edch v\u1edbi v\u1ecb tr\u00ed ngu\u1ed3n c\u1ea5p UPS<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Vi\u1ec7c b\u1ed1 tr\u00ed \u1edf th\u01b0\u1ee3ng ngu\u1ed3n v\u00e0 h\u1ea1 ngu\u1ed3n l\u00e0m thay \u0111\u1ed5i hi\u1ec7u su\u1ea5t<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u1ef1 d\u1ef1 ph\u00f2ng, \u0111\u01b0\u1eddng tr\u00e1nh v\u00e0 ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00e1c quy t\u1eafc v\u1ec1 t\u00ednh s\u1eb5n s\u00e0ng c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u v\u1eabn \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c nghi\u00ean c\u1ee9u 3P4W \u0111\u01b0\u1ee3c b\u00ecnh duy\u1ec7t v\u00e0 C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 Schneider AccuSine \u0111\u1ec1u coi vi\u1ec7c b\u00f9 d\u00f2ng trung t\u00ednh l\u00e0 m\u1ed9t t\u00e1c v\u1ee5 l\u1ef1a ch\u1ecdn ri\u00eang bi\u1ec7t, ch\u1ee9 kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ea3n ph\u1ea9m ph\u1ee5 t\u1ef1 \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh l\u1ecdc ch\u1ec9 c\u00f3 pha. CNBYG th\u1ea3o lu\u1eadn v\u1ec1 APF tr\u00ean <a href=\"https:\/\/cnbygele.com\/vi\/product\/ahf-active-harmonic-filter-harmonic-control\/\">B\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i t\u00edch c\u1ef1c AHF<\/a> trang, nh\u01b0ng b\u1ea5t k\u1ef3 khuy\u1ebfn ngh\u1ecb s\u1ea3n ph\u1ea9m n\u00e0o v\u1eabn y\u00eau c\u1ea7u \u0111o d\u00f2ng trung t\u00ednh, xem x\u00e9t h\u1ec7 th\u1ed1ng d\u00e2y \u0111i\u1ec7n v\u00e0 x\u00e1c nh\u1eadn k\u1ef9 thu\u1eadt.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u1ec3 bi\u1ebft quy tr\u00ecnh l\u1ef1a ch\u1ecdn APF chung, h\u00e3y xem <a href=\"https:\/\/cnbygele.com\/vi\/blog\/active-harmonic-filter-ahf-selection-guide\/\">h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn b\u1ed9 l\u1ecdc s\u00f3ng h\u00e0i ch\u1ee7 \u0111\u1ed9ng<\/a>.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-5-where-should-the-apf-be-installed-and-commissioned\">Ph\u1ea7n 5. APF n\u00ean \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t v\u00e0 ch\u1ea1y th\u1eed \u1edf \u0111\u00e2u?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">V\u1ecb tr\u00ed r\u1ea5t quan tr\u1ecdng v\u00ec c\u00e1c \u0111\u01b0\u1eddng c\u1ea5p ngu\u1ed3n c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u th\u01b0\u1eddng bao g\u1ed3m b\u1ed9 l\u01b0u \u0111i\u1ec7n (UPS), c\u1ea7u dao chuy\u1ec3n m\u1ea1ch t\u0129nh (STS), m\u00e1y bi\u1ebfn \u00e1p PDU v\u00e0 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u1ef1 ph\u00f2ng.<\/p>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c \u0111i\u1ec3m ki\u1ec3m tra l\u1eafp \u0111\u1eb7t ti\u00eau bi\u1ec3u:<\/p>\n<ol style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\">X\u00e1c \u0111\u1ecbnh xem t\u1ea3i phi tuy\u1ebfn t\u00ednh t\u1eadp trung tr\u00ean m\u1ed9t bus PDU hay \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u1edf th\u01b0\u1ee3ng ngu\u1ed3n<\/li>\n<li style=\"margin:0 0 8px\">Quy\u1ebft \u0111\u1ecbnh xem c\u00f3 c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh t\u1ea1i b\u1ea3ng m\u1ea1ch ch\u00ednh, ng\u00f5 ra UPS, ho\u1eb7c thanh d\u1eabn s\u00f3ng h\u00e0i chuy\u00ean d\u1ee5ng hay kh\u00f4ng<\/li>\n<li style=\"margin:0 0 8px\">X\u00e1c minh \u0111\u1ecbnh m\u1ee9c thanh c\u00e1i trung t\u00ednh, kh\u1ea3 n\u0103ng ti\u1ebfp c\u1eadn \u0111\u1ea7u c\u1ed1t v\u00e0 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch v\u1edbi d\u00f2ng s\u1ef1 c\u1ed1<\/li>\n<li style=\"margin:0 0 8px\">X\u00e1c nh\u1eadn c\u1ef1c t\u00ednh c\u1ee7a m\u00e1y bi\u1ebfn d\u00f2ng (CT) tr\u00ean c\u00e1c pha v\u00e0 trung t\u00ednh tr\u01b0\u1edbc khi \u0111\u00f3ng \u0111i\u1ec7n<\/li>\n<li style=\"margin:0 0 8px\">Ki\u1ec3m tra d\u01b0\u1edbi t\u1ea3i b\u00ecnh th\u01b0\u1eddng, t\u1ea3i \u0111\u1ec9nh v\u00e0 c\u00e1c tr\u00ecnh t\u1ef1 chuy\u1ec3n \u0111\u1ed5i b\u1ea3o tr\u00ec<\/li>\n<\/ol>\n<p style=\"margin:0 0 16px;line-height:1.7\">C\u00e1c t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt v\u1ec1 trung t\u00e2m d\u1eef li\u1ec7u c\u1ee7a Hubbell v\u00e0 Eaton \u0111\u1ec1u nh\u1ea5n m\u1ea1nh r\u1eb1ng vi\u1ec7c l\u1ef1a ch\u1ecdn bi\u1ec7n ph\u00e1p gi\u1ea3m thi\u1ec3u ph\u1ee5 thu\u1ed9c v\u00e0o v\u1ecb tr\u00ed ngu\u1ed3n v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh c\u1ee7a b\u1ed9 l\u01b0u \u0111i\u1ec7n (UPS). C\u00f4ng t\u00e1c ch\u1ea1y th\u1eed n\u00ean so s\u00e1nh d\u00f2ng \u0111i\u1ec7n RMS trung t\u00ednh v\u00e0 ph\u1ed5 s\u00f3ng h\u00e0i tr\u01b0\u1edbc v\u00e0 sau khi th\u1ef1c hi\u1ec7n d\u01b0\u1edbi c\u00f9ng m\u1ed9t c\u1ea5u h\u00ecnh t\u1ea3i CNTT.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-6-is-svg-an-alternative-for-neutral-harmonics\">Ph\u1ea7n 6. SVG c\u00f3 ph\u1ea3i l\u00e0 m\u1ed9t gi\u1ea3i ph\u00e1p thay th\u1ebf cho s\u00f3ng h\u00e0i trung t\u00ednh kh\u00f4ng?<\/h2>\n<p style=\"margin:0 0 16px;line-height:1.7\">Th\u01b0\u1eddng kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 thay th\u1ebf cho vi\u1ec7c gi\u1ea3m thi\u1ec3u s\u00f3ng h\u00e0i trung t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh.<\/p>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Thi\u1ebft b\u1ecb<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Ch\u1ee9c n\u0103ng ch\u00ednh<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">S\u1ef1 li\u00ean quan trung t\u00ednh-h\u00e0i h\u00f2a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">APF \/ AHF<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u00f9 d\u00f2ng \u0111i\u1ec7n h\u00e0i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00f3 li\u00ean quan khi c\u1ea5u h\u00ecnh m\u1ea1ng h\u1ed7 tr\u1ee3 b\u00f9 trung t\u00ednh 3P4W<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">SVG<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u00f9 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng \u0111\u1ed9ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Kh\u00f4ng thay th\u1ebf bi\u1ec7n ph\u00e1p gi\u1ea3m s\u00f3ng h\u00e0i trung t\u00ednh \u0111\u00e3 \u0111o \u0111\u1ea1c<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">T\u1ee5 \u0111i\u1ec7n gh\u00e9p n\u1ed1i<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u1ed7 tr\u1ee3 ph\u1ea3n \u1ee9ng<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Kh\u00f4ng ph\u1ea3i l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1eefa tr\u1ecb \u0111\u1ed9c l\u1eadp cho d\u00f2ng \u0111i\u1ec7n trung t\u00ednh ba pha<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ec9 m\u00e0u trung t\u00ednh qu\u00e1 kh\u1ed5<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Kh\u1ea3 n\u0103ng mang d\u00f2ng c\u1ee7a d\u00e2y d\u1eabn<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">C\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c y\u00eau c\u1ea7u, nh\u01b0ng kh\u00f4ng lo\u1ea1i b\u1ecf d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">SVG v\u1eabn c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 khi c\u00f9ng m\u1ed9t xe bu\u00fdt c\u0169ng c\u00f3 c\u00e1c dao \u0111\u1ed9ng c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng nhanh ho\u1eb7c h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t th\u1ea5p, nh\u01b0ng \u0111\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh ri\u00eang bi\u1ec7t v\u1edbi vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n s\u00f3ng h\u00e0i trung t\u00ednh.<\/p>\n<h2 style=\"margin:42px 0 14px\" id=\"part-7-what-belongs-in-an-rfq-and-what-is-outside-fit\">Ph\u1ea7n 7. Nh\u1eefng g\u00ec thu\u1ed9c v\u1ec1 RFQ v\u00e0 nh\u1eefng g\u00ec n\u1eb1m ngo\u00e0i ph\u1ea1m vi?<\/h2>\n<h3 style=\"margin:28px 0 12px\">Ng\u01b0\u1eddi mua ph\u1ea3i cung c\u1ea5p<\/h3>\n<table style=\"width:100%;border-collapse:collapse\">\n<thead>\n<tr>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">Y\u00eau c\u1ea7u b\u00e1o gi\u00e1<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">T\u1ea1i sao \u0111i\u1ec1u \u0111\u00f3 quan tr\u1ecdng<\/th>\n<th style=\"border:1px solid #d9e1e8;padding:9px 12px;background:#f5f8fa;text-align:left\">L\u1ed7i \u0111i\u1ec3n h\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">S\u01a1 \u0111\u1ed3 \u0111\u01a1n tuy\u1ebfn c\u00f3 n\u1ed1i \u0111\u1ea5t<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">X\u00e1c \u0111\u1ecbnh c\u00e1c \u0111\u01b0\u1eddng d\u1eabn 3P4W v\u00e0 \u0111\u1ecbnh tuy\u1ebfn d\u00e2y trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ec9 g\u1eedi l\u1ecbch tr\u00ecnh PDU<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Nh\u1eadt k\u00fd RMS pha v\u00e0 trung t\u00ednh<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u1ed7 tr\u1ee3 d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c v\u00e0 \u0111\u1ecbnh m\u1ee9c b\u1ed9 l\u1ecdc<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Tr\u00edch t\u1eeb m\u1ed9t \u1ea3nh ch\u1ee5p m\u00e0n h\u00ecnh THD<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Bi\u00ean \u0111\u1ed9 ph\u1ed5 theo b\u1eadc<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Hi\u1ec3n th\u1ecb t\u00ednh tr\u1ed9i c\u1ee7a s\u1ed1 nguy\u00ean ba<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ch\u1ec9 s\u1eed d\u1ee5ng THDi t\u1ed5ng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">H\u00e3ng s\u1ea3n xu\u1ea5t, d\u00f2ng m\u00e1y v\u00e0 s\u01a1 \u0111\u1ed3 d\u1ef1 ph\u00f2ng c\u1ee7a b\u1ed9 l\u01b0u \u0111i\u1ec7n (UPS)<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Thay \u0111\u1ed5i tr\u1edf kh\u00e1ng ngu\u1ed3n v\u00e0 ph\u1ed5<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u1ecf qua ho\u1ea1t \u0111\u1ed9ng \u1edf ch\u1ebf \u0111\u1ed9 ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u1ed9 l\u1ecdc, t\u1ee5 \u0111i\u1ec7n, m\u00e1y bi\u1ebfn \u00e1p hi\u1ec7n c\u00f3<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Ti\u1ebft l\u1ed9 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn h\u00f2a \u00e2m thay th\u1ebf<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">B\u1ecf qua c\u00e1c m\u00e1y bi\u1ebfn \u00e1p \u0111\u1ecbnh m\u1ee9c K ho\u1eb7c m\u00e1y bi\u1ebfn \u00e1p zic-z\u1eafc<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">V\u1ecb tr\u00ed CT v\u00e0 c\u00e1c r\u00e0ng bu\u1ed9c t\u1ee7<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">Th\u00fac \u0111\u1ea9y kh\u1ea3 n\u0103ng c\u00e0i \u0111\u1eb7t<\/td>\n<td style=\"border:1px solid #d9e1e8;padding:9px 12px\">\u0110\u1ec3 nguy\u00ean v\u1ecb tr\u00ed \u0111\u1eb7t CT trung t\u00ednh kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"margin:0 0 16px;line-height:1.7\">Chia s\u1ebb g\u00f3i qua <a href=\"https:\/\/cnbygele.com\/vi\/contact-us\/\">Trang li\u00ean h\u1ec7 CNBYG<\/a> \u0111\u1ec3 k\u1ef9 s\u01b0 xem x\u00e9t.<\/p>\n<h3 style=\"margin:28px 0 12px\">Kh\u1edbp bi\u00ean<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u00e0i vi\u1ebft n\u00e0y d\u00e0nh cho c\u00e1c k\u1ef9 s\u01b0 \u0111ang kh\u1ea3o s\u00e1t d\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i trung t\u00ednh \u0111o \u0111\u01b0\u1ee3c trong t\u1ee7 \u0111i\u1ec7n trung t\u00e2m d\u1eef li\u1ec7u 3P4W. \u0110\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 s\u1ef1 \u0111\u1ea3m b\u1ea3o v\u1ec1 vi\u1ec7c gi\u1ea3m THD, c\u1ea3i thi\u1ec7n th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng, tu\u00e2n th\u1ee7 quy \u0111\u1ecbnh c\u1ee7a c\u00f4ng ty \u0111i\u1ec7n l\u1ef1c hay ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng. Kh\u00f4ng \u0111\u01b0\u1ee3c coi SVG, b\u00f9 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng b\u1eb1ng t\u1ee5 \u0111i\u1ec7n, hay t\u0103ng k\u00edch th\u01b0\u1edbc c\u00e1p \u0111\u01a1n thu\u1ea7n l\u00e0 gi\u1ea3i ph\u00e1p thay th\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng cho b\u1ed9 l\u1ecdc c\u00f4ng su\u1ea5t t\u00edch c\u1ef1c (APF) 3P4W khi d\u00f2ng \u0111i\u1ec7n triplen trung t\u00ednh l\u00e0 v\u1ea5n \u0111\u1ec1 \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p>\n<figure style=\"margin:26px 0;text-align:center\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" style=\"max-width:640px;width:100%;height:auto;display:block;margin:0 auto;border-radius:8px\" src=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194.webp\" alt=\"\u0110\u1ed3ng h\u1ed3 \u0111o ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng cho \u0111o l\u01b0\u1eddng s\u00f3ng h\u00e0i d\u00e2y trung t\u00ednh 3P4W tr\u01b0\u1edbc khi t\u00ednh to\u00e1n ch\u1ecdn c\u00f4ng su\u1ea5t APF\" class=\"wp-image-1358\" srcset=\"https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194.webp 800w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-300x300.webp 300w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-150x150.webp 150w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-768x768.webp 768w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-500x500.webp 500w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-600x600.webp 600w, https:\/\/cnbygele.com\/wp-content\/uploads\/2026\/04\/1.BY194-100x100.webp 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption>Thi\u1ebft b\u1ecb \u0111o ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n n\u0103ng gi\u00fap thu th\u1eadp d\u1eef li\u1ec7u s\u00f3ng h\u00e0i pha v\u00e0 trung t\u00ednh tr\u01b0\u1edbc khi t\u00ednh to\u00e1n k\u00edch th\u01b0\u1edbc APF.<\/figcaption><\/figure>\n<h2 style=\"margin:42px 0 14px\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n<h3 style=\"margin:28px 0 12px\">D\u00f2ng \u0111i\u1ec7n s\u00f3ng h\u00e0i trung t\u00ednh trong trung t\u00e2m d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ch\u00fang l\u00e0 c\u00e1c d\u00f2ng \u0111i\u1ec7n h\u00e0i \u2014 th\u01b0\u1eddng l\u00e0 c\u00e1c b\u1eadc ba \u2014 c\u1ed9ng d\u1ed3n trong d\u00e2y trung t\u00ednh c\u1ee7a h\u1ec7 th\u1ed1ng 3 pha 4 d\u00e2y (3P4W).<\/p>\n<h3 style=\"margin:28px 0 12px\">T\u1ea1i sao c\u00e1c s\u00f3ng h\u00e0i b\u1eadc ba l\u1ea1i c\u1ed9ng d\u1ed3n trong d\u00e2y trung t\u00ednh?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ch\u00fang l\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n th\u1ee9 t\u1ef1 kh\u00f4ng v\u00e0 gi\u1eef nguy\u00ean pha tr\u00ean ba pha d\u01b0\u1edbi t\u1ea3i phi tuy\u1ebfn c\u00e2n b\u1eb1ng.<\/p>\n<h3 style=\"margin:28px 0 12px\">D\u00f2ng \u0111i\u1ec7n trung t\u00ednh c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 d\u00f2ng \u0111i\u1ec7n pha kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">\u0110\u00fang v\u1eady. H\u00e0m l\u01b0\u1ee3ng s\u00f3ng b\u1eadc ba l\u1edbn c\u00f3 th\u1ec3 khi\u1ebfn d\u00e2y trung t\u00ednh tr\u1edf th\u00e0nh d\u00e2y d\u1eabn gi\u1edbi h\u1ea1n ngay c\u1ea3 khi d\u00f2ng \u0111i\u1ec7n pha c\u00f3 v\u1ebb \u1edf m\u1ee9c v\u1eeba ph\u1ea3i.<\/p>\n<h3 style=\"margin:28px 0 12px\">B\u01b0\u1edbc \u0111o \u0111\u1ea7u ti\u00ean l\u00e0 g\u00ec?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Ghi l\u1ea1i d\u00f2ng \u0111i\u1ec7n RMS pha v\u00e0 trung t\u00ednh, ph\u1ed5 s\u00f3ng h\u00e0i v\u00e0 ch\u1ebf \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a UPS t\u1ea1i thanh c\u00e1i b\u1ecb \u1ea3nh h\u01b0\u1edfng.<\/p>\n<h3 style=\"margin:28px 0 12px\">SVG c\u00f3 th\u1ec3 thay th\u1ebf APF cho s\u00f3ng h\u00e0i trung t\u00ednh kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Kh\u00f4ng. SVG x\u1eed l\u00fd c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng. Vi\u1ec7c gi\u1ea3m s\u00f3ng h\u00e0i trung t\u00ednh \u0111\u00f2i h\u1ecfi m\u1ed9t c\u1ea5u tr\u00fac APF v\u1edbi kh\u1ea3 n\u0103ng trung t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng.<\/p>\n<h3 style=\"margin:28px 0 12px\">T\u00ednh n\u0103ng APF n\u00e0o l\u00e0 quan tr\u1ecdng nh\u1ea5t trong c\u00e1c h\u1ec7 th\u1ed1ng 3 pha 4 d\u00e2y?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">B\u1ed3i th\u01b0\u1eddng d\u00f2ng trung t\u00ednh t\u01b0\u1eddng minh, b\u1ed1 tr\u00ed CT ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ecbnh m\u1ee9c ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c s\u00f3ng h\u00e0i trung t\u00ednh \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c.<\/p>\n<h3 style=\"margin:28px 0 12px\">APF n\u00ean \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u1edf \u0111\u00e2u?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">T\u1ea1i b\u1ea3ng ph\u00e2n ph\u1ed1i ho\u1eb7c ngu\u1ed3n c\u1ea5p ph\u1ee5c v\u1ee5 c\u00e1c t\u1ea3i CNTT v\u00e0 UPS phi tuy\u1ebfn t\u00ednh \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh th\u00f4ng qua \u0111o \u0111\u1ea1c.<\/p>\n<h3 style=\"margin:28px 0 12px\">D\u00f2ng \u0111i\u1ec7n trung t\u00ednh THDi cao c\u00f3 t\u1ef1 \u0111\u1ed9ng l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p kh\u1ea9n c\u1ea5p kh\u00f4ng?<\/h3>\n<p style=\"margin:0 0 16px;line-height:1.7\">Kh\u00f4ng. Ph\u00e2n bi\u1ec7t t\u1ef7 l\u1ec7 m\u00e9o d\u1ea1ng v\u1edbi kh\u1ea3 n\u0103ng mang t\u1ea3i RMS v\u00e0 r\u1ee7i ro b\u1ea3o v\u1ec7 b\u1eb1ng m\u1ed9t nghi\u00ean c\u1ee9u to\u00e0n di\u1ec7n.<\/p>\n<h2 style=\"margin:42px 0 14px\">T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<ul style=\"margin:0 0 18px 1.2em;line-height:1.7\">\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.se.com\/us\/en\/faqs\/FA212226\/\" rel=\"nofollow noopener\" target=\"_blank\">Schneider Electric \u2014 s\u00f3ng h\u00e0i b\u1eadc ba v\u00e0 d\u00f2ng \u0111i\u1ec7n trung t\u00ednh<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.fluke.com\/en-sg\/learn\/blog\/power-quality\/how-to-monitor-harmonics-in-data-centers\" rel=\"nofollow noopener\" target=\"_blank\">Fluke \u2014 gi\u00e1m s\u00e1t s\u00f3ng h\u00e0i trong trung t\u00e2m d\u1eef li\u1ec7u<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/www.eaton.com\/content\/dam\/eaton\/markets\/data-center\/Mitigating-DC-harmonics.pdf\" rel=\"nofollow noopener\" target=\"_blank\">Eaton \u2014 gi\u1ea3m thi\u1ec3u s\u00f3ng h\u00e0i cho trung t\u00e2m d\u1eef li\u1ec7u<\/a><\/li>\n<li style=\"margin:0 0 8px\"><a href=\"https:\/\/dergipark.org.tr\/en\/pub\/gujs\/article\/296768\" rel=\"nofollow noopener\" target=\"_blank\">T\u1ea1p ch\u00ed \u0110\u1ea1i h\u1ecdc Gazi \u2014 Nghi\u00ean c\u1ee9u b\u00f9 \u0111\u1eafp trung t\u00ednh 3P4W<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>T\u00ecm hi\u1ec3u l\u00fd do t\u1ea1i sao c\u00e1c s\u00f3ng h\u00e0i trung t\u00ednh trung l\u1eadp c\u1ee7a trung t\u00e2m d\u1eef li\u1ec7u x\u1ea3y ra trong h\u1ec7 th\u1ed1ng 3P4W, nh\u1eefng g\u00ec c\u1ea7n \u0111o l\u01b0\u1eddng v\u00e0 khi n\u00e0o vi\u1ec7c gi\u1ea3m thi\u1ec3u s\u00f3ng h\u00e0i trung t\u00ednh b\u1eb1ng APF ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c d\u1ef1 \u00e1n t\u1ee7 \u0111i\u1ec7n v\u00e0 t\u1ea3i UPS.<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2557","post","type-post","status-publish","format-standard","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":7}},"acf":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2557","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/comments?post=2557"}],"version-history":[{"count":1,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2557\/revisions"}],"predecessor-version":[{"id":2614,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/posts\/2557\/revisions\/2614"}],"wp:attachment":[{"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/media?parent=2557"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/categories?post=2557"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cnbygele.com\/vi\/wp-json\/wp\/v2\/tags?post=2557"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}