{"id":3728,"date":"2026-09-25T01:00:00","date_gmt":"2026-09-25T01:00:00","guid":{"rendered":"https:\/\/lbajiele.com\/?p=3728"},"modified":"2026-10-04T10:31:59","modified_gmt":"2026-10-04T10:31:59","slug":"power-factor-of-motor-guide","status":"publish","type":"post","link":"https:\/\/lbajiele.com\/vi\/blog\/power-factor-of-motor-guide\/","title":{"rendered":"\u0110\u1ed9 hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1: H\u01b0\u1edbng d\u1eabn"},"content":{"rendered":"

The \u0111i\u1ec7n tr\u1edf c\u1ee7a \u0111\u1ed9ng c\u01a1<\/strong> Mi\u00eau t\u1ea3 hi\u1ec7u qu\u1ea3 c\u1ee7a \u0111\u1ed9ng c\u01a1 trong vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i \u0111i\u1ec7n n\u0103ng bi\u1ec3u ki\u1ebfn th\u00e0nh c\u00f4ng su\u1ea5t c\u01a1 h\u1ecdc th\u1ef1c s\u1ef1. C\u00e1c \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng th\u01b0\u1eddng c\u00f3 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t ch\u1eadm v\u00ec t\u1eeb tr\u01b0\u1eddng c\u1ee7a ch\u00fang y\u00eau c\u1ea7u d\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng. Gi\u00e1 tr\u1ecb n\u00e0y thay \u0111\u1ed5i theo t\u1ea3i, \u0111i\u1ec7n \u00e1p, t\u1ed1c \u0111\u1ed9, k\u00edch th\u01b0\u1edbc \u0111\u1ed9ng c\u01a1, hi\u1ec7u su\u1ea5t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p kh\u1edfi \u0111\u1ed9ng, v\u00ec v\u1eady gi\u00e1 tr\u1ecb tr\u00ean nh\u00e3n ho\u1eb7c trong catalog kh\u00f4ng ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb PF \u0111\u01b0\u1ee3c \u0111o \u1edf m\u1ecdi \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng.<\/p>\n

\u00dd ngh\u0129a c\u1ee7a t\u1eeb leading v\u00e0 lagging l\u00e0 g\u00ec<\/h2>\n

Trong m\u1ed9t m\u1ea1ch xoay chi\u1ec1u, d\u00f2ng \u0111i\u1ec7n lu\u00f4n lu\u00f4n t\u1ee5t l\u1ea1i sau \u0111i\u1ec7n \u00e1p khi t\u1ea3i c\u00f3 t\u00ednh ch\u1ea5t c\u1ea3m \u0111i\u1ec7n t\u00edch n\u0103ng trong m\u1ed9t t\u1eeb tr\u01b0\u1eddng. C\u00f2n d\u00f2ng \u0111i\u1ec7n l\u1ea1i lu\u00f4n lu\u00f4n d\u1eabn tr\u01b0\u1edbc \u0111i\u1ec7n \u00e1p khi t\u1ea3i c\u00f3 t\u00ednh ch\u1ea5t \u0111i\u1ec7n t\u00edch t\u0129nh trong m\u1ed9t t\u1eeb tr\u01b0\u1eddng \u0111i\u1ec7n. C\u00f4ng su\u1ea5t th\u1ef1c \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng kW, c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng b\u1eb1ng kvar v\u00e0 c\u00f4ng su\u1ea5t bi\u1ec3u th\u1ecb b\u1eb1ng kVA. C\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng quan l\u00e0 c\u00f4ng su\u1ea5t = kW\/kVA, trong khi d\u1ea5u c\u1ee7a kvar ho\u1eb7c g\u00f3c pha cho bi\u1ebft h\u01b0\u1edbng.<\/p>\n
Quan s\u00e1t<\/th>C\u00f3 kh\u1ea3 n\u0103ng l\u00e0 t\u00ecnh tr\u1ea1ng<\/th>Ki\u1ec3m tra<\/th><\/tr><\/thead>
T\u0103ng ho\u1eb7c gi\u1ea3m t\u1ea3i khi t\u1ea3i c\u00f3 \u0111i\u1ec7n t\u1eeb<\/td>T\u1ec9 s\u1ed1 c\u00f4ng su\u1ea5t t\u1ee5t h\u1eadu<\/td>Lu\u1eadt \u0111\u1ecbnh v\u1ecb v\u00e0 k\u00fd hi\u1ec7u pha g\u00f3c<\/td><\/tr>
K\u1ebft qu\u1ea3 \u00e2m ho\u1eb7c xu\u1ea5t hi\u1ec7n kvar khi c\u00e1c t\u1ee5 \u0111i\u1ec7n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i<\/td>\u0110\u1ed9 hi\u1ec7u su\u1ea5t \u0111i\u1ec7n n\u0103ng d\u1eabn \u0111\u1ea7u th\u1ecb tr\u01b0\u1eddng<\/td>T\u00ecnh tr\u1ea1ng c\u1ee7a t\u1ee5 v\u00e0 c\u1ef1c c\u1ee7a CT<\/td><\/tr>
PF g\u1ea7n m\u1ee9c 1 nh\u01b0ng kvar \u0111\u00e3 thay \u0111\u1ed5i h\u01b0\u1edbng<\/td>S\u1ef1 chuy\u1ec3n \u0111\u1ed5i gi\u1eefa giai \u0111o\u1ea1n d\u1eabn d\u1eaft v\u00e0 b\u1ecb t\u1ee5t h\u1eadu<\/td>Chu tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i t\u1ea3i v\u00e0 t\u1ee5 \u0111i\u1ec7n<\/td><\/tr>
Bi\u1ec3u t\u01b0\u1ee3ng PF c\u00f3 v\u1ebb kh\u00f4ng nh\u1ea5t qu\u00e1n<\/td>C\u00f3 th\u1ec3 c\u00f3 l\u1ed7i v\u1ec1 c\u1ef1c t\u00ednh ho\u1eb7c pha trong qu\u00e1 tr\u00ecnh l\u1eadp b\u1ea3n \u0111\u1ed3 CT\/PT<\/td>Bi\u1ec3u \u0111\u1ed3 n\u1ed1i d\u00e2y v\u00e0 ki\u1ec3m tra pha<\/td><\/tr>
\u0110\u1ed9 PF th\u1ea5p trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1<\/td>Hi\u1ec7u su\u1ea5t ph\u1ea3n \u1ee9ng v\u00e0 d\u00f2ng \u0111i\u1ec7n bi\u1ebfn \u0111\u1ed5i cao<\/td>Ph\u01b0\u01a1ng ph\u00e1p b\u1eaft \u0111\u1ea7u v\u00e0 ghi ch\u00e9p s\u1ef1 ki\u1ec7n<\/td><\/tr><\/tbody><\/table>\n

H\u00e3y s\u1eed d\u1ee5ng k\u00fd hi\u1ec7u c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ee7a \u0111\u1ed3ng h\u1ed3<\/h2>\n

Nhi\u1ec1u m\u00e1y \u0111o ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n hi\u1ec3n th\u1ecb kW, kvar, kVA, PF v\u00e0 ch\u1ec9 b\u00e1o th\u1eddi gian d\u1eabn\/ch\u1eadm. H\u00e3y \u0111\u1ecdc h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng c\u1ee7a m\u00e1y \u0111o v\u00ec c\u00e1c quy \u01b0\u1edbc bi\u1ec3u th\u1ecb kh\u00e1c nhau. M\u1ed9t s\u1ed1 m\u00e1y \u0111o ch\u1ec9 b\u00e1o kvar d\u01b0\u01a1ng cho t\u1ea3i ch\u1eadm v\u00e0 kvar \u00e2m cho t\u1ea3i nhanh; c\u00f2n m\u1ed9t s\u1ed1 kh\u00e1c s\u1eed d\u1ee5ng ng\u00f4n ng\u1eef nh\u1eadp\/xu\u1ea5t. \u0110\u1eebng sao ch\u00e9p quy t\u1eafc bi\u1ec3u th\u1ecb t\u1eeb m\u1ed9t m\u00e1y \u0111o kh\u00e1c m\u00e0 kh\u00f4ng ki\u1ec3m tra tr\u00ecnh t\u1ef1 pha v\u00e0 h\u01b0\u1edbng CT c\u1ee7a n\u00f3.<\/p>\n

\u0110o \u0111\u1ea1c m\u00e0n h\u00ecnh khi m\u1ed9t t\u1ea3i \u0111i\u1ec7n c\u1ea3m bi\u1ebft \u0111\u1ebfn \u0111ang ho\u1ea1t \u0111\u1ed9ng, sau \u0111\u00f3 k\u1ebft n\u1ed1i ho\u1eb7c ng\u1eaft k\u1ebft n\u1ed1i m\u1ed9t giai \u0111o\u1ea1n t\u1ee5 \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e1c minh v\u00e0 quan s\u00e1t s\u1ef1 thay \u0111\u1ed5i. N\u1ebfu kvar di chuy\u1ec3n v\u1ec1 ph\u00eda zero, th\u00ec t\u1ee5 \u0111i\u1ec7n \u0111ang b\u00f9 t\u1ea3i \u0111i\u1ec7n c\u1ea3m. N\u1ebfu t\u1ee5 \u0111i\u1ec7n v\u01b0\u1ee3t qua zero v\u00e0 tr\u1edf th\u00e0nh t\u1ee5 \u0111i\u1ec7n t\u0129nh, th\u00ec h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u1ea1t tr\u1ea1ng th\u00e1i d\u1eabn \u0111i\u1ec7n t\u1ea1i \u0111i\u1ec3m ho\u1ea1t \u0111\u1ed9ng \u0111\u00f3. Ho\u1ea1t \u0111\u1ed9ng d\u1eabn \u0111i\u1ec7n qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 g\u00e2y ra nguy c\u01a1 qu\u00e1 \u00e1p ho\u1eb7c c\u1ed9ng h\u01b0\u1edfng.<\/p>\n

T\u00ednh theo kW v\u00e0 kvar<\/h2>\n

N\u1ebfu \u0111\u1ed3ng h\u1ed3 \u0111o cung c\u1ea5p th\u00f4ng s\u1ed1 kW v\u00e0 kvar c\u00f3 d\u1ea5u, th\u00ec \u0111\u1ed9 l\u1edbn c\u1ee7a c\u00f4ng su\u1ea5t bi\u1ec3u th\u1ecb l\u00e0 S = \u221a(P\u00b2 + Q\u00b2), v\u00e0 \u0111\u1ed9 l\u1edbn c\u1ee7a h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t l\u00e0 |PF|= |P|\/S. G\u00f3c pha c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00ednh nh\u01b0 \u03c6 = atan2(Q, P), v\u1edbi d\u1ea5u c\u1ee7a Q bi\u1ec3u th\u1ecb quy \u01b0\u1edbc d\u1eabn tr\u01b0\u1edbc ho\u1eb7c \u0111u\u00f4i theo l\u1ef1a ch\u1ecdn. Thay v\u00ec ghi l\u1ea1i ch\u1ec9 s\u1ed1 PF tuy\u1ec7t \u0111\u1ed1i, h\u00e3y gi\u1eef nguy\u00ean c\u00e1c gi\u00e1 tr\u1ecb c\u00f3 d\u1ea5u v\u00e0 quy \u01b0\u1edbc trong b\u00e1o c\u00e1o.<\/p>\n

V\u00ed d\u1ee5, t\u1ea3i \u0111i\u1ec7n 80 kW v\u00e0 +60 kvar c\u00f3 c\u00f4ng su\u1ea5t 100 kVA v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t PF l\u00e0 0,80 theo quy \u01b0\u1edbc, trong \u0111\u00f3 kvar d\u01b0\u01a1ng c\u00f3 ngh\u0129a l\u00e0 t\u1ee5 \u0111i\u1ec7n b\u1ecb t\u1ee5. N\u1ebfu hi\u1ec7u ch\u1ec9nh t\u1ee5 \u0111i\u1ec7n l\u00e0m gi\u00e1 tr\u1ecb \u0111o thay \u0111\u1ed5i th\u00e0nh 80 kW v\u00e0 \u221220 kvar, th\u00ec m\u1ee9c c\u00f4ng su\u1ea5t s\u1ebd l\u00e0 kho\u1ea3ng 82,5 kVA v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t PF l\u00e0 kho\u1ea3ng 0,97 d\u1eabn d\u1eaft. S\u1ef1 thay \u0111\u1ed5i v\u1ec1 d\u1ea5u t\u00edch l\u00e0 k\u1ebft qu\u1ea3 quan tr\u1ecdng; c\u00e1ch gi\u1ea3i th\u00edch ch\u00ednh x\u00e1c v\u1eabn theo quy \u01b0\u1edbc c\u1ee7a \u0111\u1ed3ng h\u1ed3 \u0111o.<\/p>\n

Ki\u1ec3m tra d\u1ea1ng s\u00f3ng v\u00e0 g\u00f3c pha hi\u1ec7n t\u1ea1i<\/h2>\n

B\u1ed9 ph\u00e2n t\u00edch c\u00f4ng su\u1ea5t c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb d\u1ea1ng s\u00f3ng \u0111i\u1ec7n \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n v\u00e0 t\u00ednh to\u00e1n g\u00f3c pha cho t\u1eebng pha. D\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n b\u1ecb t\u1ee5 l\u1ea1i \u0111\u1ea1t \u0111\u1ebfn c\u1ef1c \u0111\u1ea1i sau khi tham chi\u1ebfu \u0111i\u1ec7n \u00e1p; d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n d\u1eabn tr\u01b0\u1edbc \u0111\u1ea1t \u0111\u1ebfn c\u1ef1c \u0111\u1ea1i tr\u01b0\u1edbc khi tham chi\u1ebfu. C\u00e1c h\u1ec7 s\u1ed1 h\u00e0i t\u1ea1o l\u00e0m cho h\u00ecnh \u1ea3nh \u0111\u01a1n gi\u1ea3n v\u1ec1 g\u00f3c pha tr\u1edf n\u00ean kh\u00f4ng \u0111\u1ea7y \u0111\u1ee7, v\u00ec v\u1eady khi c\u00f3 t\u1ea3i kh\u00f4ng tuy\u1ebfn t\u00ednh, c\u1ea7n xem x\u00e9t ri\u00eang y\u1ebfu t\u1ed1 c\u00f4ng su\u1ea5t l\u1ec7ch pha v\u00e0 y\u1ebfu t\u1ed1 c\u00f4ng su\u1ea5t th\u1ef1c.<\/p>\n

Ki\u1ec3m tra tr\u00ecnh t\u1ef1 giai \u0111o\u1ea1n, c\u1ef1c t\u00ednh CT, c\u1ef1c t\u00ednh PT v\u00e0 l\u1eadp b\u1ea3n \u0111\u1ed3 k\u00eanh. M\u1ed9t CT \u0111\u1ea3o ng\u01b0\u1ee3c c\u00f3 th\u1ec3 l\u00e0m cho t\u1ea3i c\u00f3 \u0111i\u1ec7n tr\u1edf c\u1ea3m \u1ee9ng tr\u00f4ng gi\u1ed1ng nh\u01b0 t\u1ea3i \u0111i\u1ec7n t\u0129nh ho\u1eb7c t\u1ea1o ra gi\u00e1 tr\u1ecb kW \u00e2m. So s\u00e1nh k\u1ebft qu\u1ea3 c\u1ee7a m\u00e1y ph\u00e2n t\u00edch v\u1edbi t\u1ea3i tham chi\u1ebfu \u0111\u00e3 bi\u1ebft v\u00e0 s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00f2ng. Kh\u00f4ng bao gi\u1edd \u0111i\u1ec1u ch\u1ec9nh m\u1ed9t nh\u00f3m t\u1ee5 \u0111i\u1ec7n d\u1ef1a tr\u00ean m\u1ed9t k\u1ebft qu\u1ea3 ch\u01b0a \u0111\u01b0\u1ee3c x\u00e1c nh\u1eadn.<\/p>\n

\"LBAJI
C\u00e1c thi\u1ebft b\u1ecb c\u1ea5p \u0111i\u1ec7n \u0111\u1ed9ng c\u01a1 trong d\u00f2ng s\u1ea3n ph\u1ea9m \u0111i\u1ec7n \u00e1p th\u1ea5p n\u00ean \u0111\u01b0\u1ee3c \u0111o t\u1ea1i ranh gi\u1edbi c\u1ea5p \u0111i\u1ec7n \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh.<\/figcaption><\/figure>\n

H\u00e0nh vi c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 m\u00e1y bi\u1ebfn \u00e1p<\/h2>\n

C\u00e1c \u0111\u1ed9ng c\u01a1 c\u1ea3m \u1ee9ng th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng v\u1edbi h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t ch\u00eanh l\u1ec7ch, \u0111\u1eb7c bi\u1ec7t l\u00e0 \u1edf t\u1ea3i nh\u1eb9 v\u00e0 trong qu\u00e1 tr\u00ecnh kh\u1edfi \u0111\u1ed9ng. C\u00e1c m\u00e1y bi\u1ebfn \u00e1p c\u0169ng ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng t\u1eeb t\u1eeb. H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t ch\u00eanh l\u1ec7ch thay \u0111\u1ed5i theo t\u1ea3i, \u0111i\u1ec7n \u00e1p v\u00e0 ch\u1ebf \u0111\u1ed9 \u0111i\u1ec1u khi\u1ec3n. M\u1ed9t \u0111\u1ed9ng c\u01a1 c\u00f3 v\u1ebb ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c khi \u0111\u1ea1t t\u1ea3i \u0111\u1ea7y c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ed9 ch\u00eanh l\u1ec7ch cao khi t\u1ea3i nh\u1eb9. \u0110\u00e1nh gi\u00e1 d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng, kW, kvar, \u0111i\u1ec7n \u00e1p v\u00e0 t\u1ed1c \u0111\u1ed9 c\u00f9ng nhau.<\/p>\n

C\u00e1c \u1ed5 \u0111\u0129a t\u1ea7n s\u1ed1 bi\u1ebfn c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t bi\u1ebfn \u0111\u1ed5i c\u1ee7a \u0111\u1ea7u v\u00e0o m\u00e0 v\u1eabn duy tr\u00ec \u0111\u01b0\u1ee3c c\u00e1c xung \u0111i\u1ec7n h\u00e0i. Vi\u1ec7c k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp m\u1ed9t c\u1ee5m t\u1ee5 \u0111i\u1ec7n tr\u1edf v\u1edbi \u0111\u1ea7u ra c\u1ee7a \u1ed5 \u0111\u0129a th\u01b0\u1eddng kh\u00f4ng th\u00edch h\u1ee3p. Tr\u01b0\u1edbc khi l\u1eafp \u0111\u1eb7t thi\u1ebft b\u1ecb \u0111i\u1ec1u ch\u1ec9nh, h\u00e3y xem l\u1ea1i h\u01b0\u1edbng d\u1eabn s\u1eed d\u1ee5ng c\u1ee7a \u1ed5 \u0111\u0129a, nghi\u00ean c\u1ee9u v\u1ec1 xung \u0111i\u1ec7n h\u00e0i v\u00e0 y\u00eau c\u1ea7u v\u1ec1 \u0111\u1ed9 l\u1ec7ch pha. T\u1ee7 \u0111i\u1ec7n h\u1ea1 th\u1ebf GGD<\/a> Trang n\u00e0y l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o v\u1ec1 s\u1ea3n ph\u1ea9m \u0111\u1ec3 ph\u00e2n ph\u1ed1i; thi\u1ebft b\u1ecb PF th\u1ef1c t\u1ebf ph\u1ea3i \u0111\u01b0\u1ee3c l\u1ef1a ch\u1ecdn t\u1eeb nghi\u00ean c\u1ee9u h\u1ec7 th\u1ed1ng.<\/p>\n

C\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n v\u00e0 vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh qu\u00e1 m\u1ee9c<\/h2>\n

C\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n t\u1ef1 \u0111\u1ed9ng chuy\u1ec3n sang tr\u1ea1ng th\u00e1i theo t\u1ea3i. N\u1ebfu c\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n v\u1eabn k\u1ebft n\u1ed1i trong khi \u0111\u1ed9ng c\u01a1 \u0111ang d\u1eebng ho\u1ea1t \u0111\u1ed9ng, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean ho\u1ea1t \u0111\u1ed9ng qu\u00e1 t\u1ea3i. Vi\u1ec7c qu\u00e1 t\u1ea3i c\u00f3 th\u1ec3 l\u00e0m t\u0103ng \u0111i\u1ec7n \u00e1p, t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u00e1y bi\u1ebfn \u00e1p v\u00e0 g\u00e2y ra c\u1ed9ng h\u01b0\u1edfng v\u1edbi \u0111i\u1ec7n tr\u1edf c\u1ee7a m\u1ea1ng. S\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n v\u1edbi v\u1ecb tr\u00ed CT ch\u00ednh x\u00e1c, PF m\u1ee5c ti\u00eau, \u0111\u1ed9 tr\u1ec5 chuy\u1ec3n m\u1ea1ch v\u00e0 th\u1eddi gian x\u1ea3. X\u00e1c nh\u1eadn r\u1eb1ng m\u1ed7i c\u1ee5m t\u1ee5 \u0111i\u1ec7n \u0111\u1ec1u c\u00f3 c\u1ea7u ch\u00ec, contactor, reactor khi c\u1ea7n thi\u1ebft v\u00e0 c\u00e1c \u0111i\u1ec7n tr\u1edf x\u1ea3 an to\u00e0n.<\/p>\n

\u0110o ch\u1ec9 s\u1ed1 PF t\u1ea1i \u0111i\u1ec3m \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh b\u1edfi y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 ho\u1eb7c d\u1ef1 \u00e1n. M\u1ed9t b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 cho k\u1ebft qu\u1ea3 g\u1ea7n v\u1edbi gi\u00e1 tr\u1ecb \u0111\u01a1n v\u1ecb, trong khi d\u00f2ng \u0111i\u1ec7n ch\u00ednh v\u1eabn c\u00f2n ch\u1eadm v\u00ec m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn kh\u00e1c kh\u00f4ng \u0111\u01b0\u1ee3c b\u00f9 \u0111\u1eafp. M\u1ed9t h\u1ec7 th\u1ed1ng t\u1ee5 c\u0169ng c\u00f3 th\u1ec3 kh\u1eafc ph\u1ee5c m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn trong khi g\u00e2y ra s\u1ef1 \u0111i\u1ec1u ch\u1ec9nh qu\u00e1 m\u1ee9c v\u00e0o ban \u0111\u00eam ho\u1eb7c trong th\u1eddi gian s\u1ea3n xu\u1ea5t th\u1ea5p. C\u00e1c gi\u00e1 tr\u1ecb theo xu h\u01b0\u1edbng \u0111\u01b0\u1ee3c \u0111o trong su\u1ed1t chu tr\u00ecnh v\u1eadn h\u00e0nh.<\/p>\n

\u0110o \u0111i\u1ec7n \u00e1p ba pha<\/h2>\n

\u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng ba pha c\u00e2n b\u1eb1ng, h\u00e3y s\u1eed d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p ba pha c\u1ee7a b\u1ed9 ph\u00e2n t\u00edch v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00e0i \u0111\u1eb7t \u0111i\u1ec7n \u00e1p t\u1eeb d\u00e2y \u0111\u1ebfn d\u00e2y ho\u1eb7c t\u1eeb d\u00e2y \u0111\u1ebfn trung t\u00ednh. Trong tr\u01b0\u1eddng h\u1ee3p h\u1ec7 th\u1ed1ng kh\u00f4ng c\u00e2n b\u1eb1ng, h\u00e3y ki\u1ec3m tra c\u00f4ng su\u1ea5t kW, kvar, d\u00f2ng \u0111i\u1ec7n v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a t\u1eebng pha. T\u1ed5ng h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u00f3 th\u1ec3 che khu\u1ea5t pha d\u1eabn v\u00e0 pha t\u1ee5t h\u1eadu. Ki\u1ec3m tra d\u00f2ng \u0111i\u1ec7n trung t\u00ednh, tr\u00ecnh t\u1ef1 pha v\u00e0 t\u1ef7 l\u1ec7 m\u00e1y bi\u1ebfn d\u00f2ng \u0111i\u1ec7n.<\/p>\n

Vi\u1ec7c \u0111\u1eb7t v\u1ecb tr\u00ed c\u00f4ng t\u1eafc ti\u1ebfp \u0111\u1ea5t l\u00e0 r\u1ea5t quan tr\u1ecdng khi t\u1ea3i \u0111i\u1ec7n bao g\u1ed3m m\u00e1y ph\u00e1t \u0111i\u1ec7n, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n chuy\u1ec3n m\u1ea1ch ho\u1eb7c nhi\u1ec1u thi\u1ebft b\u1ecb \u0111\u1ea7u v\u00e0o c\u00f9ng l\u00fac. C\u00f4ng t\u1eafc ti\u1ebfp \u0111\u1ea5t ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng nh\u1eadn bi\u1ebft d\u00f2ng \u0111i\u1ec7n m\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u1ef1 \u0111\u1ecbnh \u0111i\u1ec1u ch\u1ec9nh. D\u1ea5u hi\u1ec7u cho th\u1ea5y c\u00f4ng t\u1eafc ti\u1ebfp \u0111\u1ea5t \u0111ang ho\u1ea1t \u0111\u1ed9ng c\u00f3 th\u1ec3 l\u00e0 \u0111\u00fang, ho\u1eb7c c\u00f3 th\u1ec3 cho th\u1ea5y r\u1eb1ng c\u00f4ng t\u1eafc ti\u1ebfp \u0111\u1ea5t \u0111ang \u1edf ph\u00eda sai c\u1ee7a c\u00f4ng t\u1eafc. \u0110o d\u1ea5u v\u1ebft d\u00f2ng \u0111i\u1ec7n tr\u00ean d\u00e2y \u0111\u01a1n.<\/p>\n

Khai th\u00e1c v\u00e0 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1<\/h2>\n

B\u1eaft \u0111\u1ea7u v\u1edbi t\u1ea3i tr\u1ecdng \u0111\u00e3 bi\u1ebft v\u00e0 x\u00e1c minh vi\u1ec7c l\u1eadp b\u1ea3n \u0111\u1ed3 pha c\u1ee7a \u0111\u1ed3ng h\u1ed3. Ghi l\u1ea1i kW, kvar, kVA, PF, \u0111i\u1ec7n \u00e1p, d\u00f2ng \u0111i\u1ec7n, t\u1ea7n s\u1ed1 v\u00e0 c\u00e1c xung \u0111i\u1ec7n. B\u1eadt m\u1ed9t giai \u0111o\u1ea1n t\u1ee5 \u0111i\u1ec7n ho\u1eb7c t\u1ea3i \u0111i\u1ec7n c\u1ea3m \u0111\u00e3 bi\u1ebft t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m v\u00e0 x\u00e1c nh\u1eadn s\u1ef1 thay \u0111\u1ed5i k\u00fd hi\u1ec7u mong \u0111\u1ee3i. N\u1ebfu gi\u00e1 tr\u1ecb \u0111o kh\u00f4ng h\u1ee3p l\u00fd, h\u00e3y ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf c\u1ee7a CT, h\u1ec7 th\u1ed1ng \u0111\u1ea5u d\u00e2y PT, tr\u00ecnh t\u1ef1 pha, t\u1ef7 l\u1ec7 gi\u00e3n n\u1edf, n\u1ed1i \u0111\u1ea5t v\u00e0 c\u1ea5u h\u00ecnh ph\u1ea7n m\u1ec1m tr\u01b0\u1edbc khi thay \u0111\u1ed5i ph\u1ea7n c\u1ee9ng.<\/p>\n

Khi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n PF ho\u1ea1t \u0111\u1ed9ng trong qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i, h\u00e3y xem x\u00e9t \u0111\u1ed9 tr\u1ec5 khi chuy\u1ec3n \u0111\u1ed5i, kho\u1ea3ng tr\u1ed1ng t\u1ea3i, th\u1eddi gian x\u1ea3 t\u1ea3i, v\u1ecb tr\u00ed CT v\u00e0 t\u1ea3i t\u1ed1i thi\u1ec3u. Khi PF b\u1ea5t ng\u1edd d\u1eabn d\u1eaft, h\u00e3y ki\u1ec3m tra c\u00e1c ti\u1ebfp \u0111i\u1ec3m b\u1ecb k\u1eb9t, c\u00e1c pha \u0111\u00e3 h\u00e0n ho\u00e0n to\u00e0n, thi\u1ebft l\u1eadp c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p v\u00e0 m\u00e1y bi\u1ebfn t\u1ea7n. Kh\u00f4ng n\u00ean v\u00f4 hi\u1ec7u h\u00f3a b\u1ea3o v\u1ec7 ho\u1eb7c b\u1ecf qua c\u00e1c thi\u1ebft l\u1eadp c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n m\u00e0 kh\u00f4ng c\u00f3 quy tr\u00ecnh \u0111\u01b0\u1ee3c ph\u00ea duy\u1ec7t.<\/p>\n

B\u00e1o c\u00e1o<\/h2>\n

M\u1ed9t b\u00e1o c\u00e1o h\u1eefu \u00edch tr\u00ecnh b\u00e0y th\u00f4ng tin v\u1ec1 m\u00f4 h\u00ecnh thi\u1ebft b\u1ecb, hi\u1ec7u chu\u1ea9n, c\u1ea5u h\u00ecnh d\u00e2y d\u1eabn, quy \u01b0\u1edbc k\u00fd hi\u1ec7u, chu k\u1ef3 l\u1ea5y m\u1eabu, t\u1ea3i ho\u1ea1t \u0111\u1ed9ng, c\u00e1c giai \u0111o\u1ea1n t\u1ee5 \u0111i\u1ec7n, kW, kvar, kVA, PF v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb h\u00e0i h\u00f2a. Bao g\u1ed3m \u1ea3nh ch\u1ee5p m\u00e0n h\u00ecnh ho\u1eb7c c\u00e1c b\u1ea3n ghi s\u1ef1 ki\u1ec7n khi h\u01b0\u1edbng thay \u0111\u1ed5i. So s\u00e1nh gi\u1eefa nh\u1eefng ng\u01b0\u1eddi \u0111i \u0111\u1ea7u v\u00e0 nh\u1eefng ng\u01b0\u1eddi c\u00f2n t\u1ee5t h\u1eadu<\/a> cung c\u1ea5p m\u1ed9t t\u00e0i li\u1ec7u tham kh\u1ea3o v\u1ec1 thu\u1eadt ng\u1eef c\u01a1 b\u1ea3n; b\u00e1o c\u00e1o d\u1ef1 \u00e1n n\u00ean gi\u1eef l\u1ea1i c\u00e1c k\u00fd hi\u1ec7u v\u00e0 gi\u1ea3 \u0111\u1ecbnh \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111o \u0111\u1ea1c.<\/p>\n

\u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o, h\u00e3y ph\u00e2n bi\u1ec7t gi\u1eefa vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ee7a bi\u1ebfn t\u1ea7n v\u00e0 vi\u1ec7c \u0111i\u1ec1u ch\u1ec9nh t\u1ee5 \u0111i\u1ec7n. LBAJI B\u1ed9 t\u1ee7 BWG-800<\/a> \u0110\u00e2y ch\u1ec9 l\u00e0 t\u00e0i li\u1ec7u tham kh\u1ea3o v\u1ec1 thi\u1ebft b\u1ecb, kh\u00f4ng ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng v\u1ec1 m\u1ed9t thi\u1ebft l\u1eadp PF c\u1ee5 th\u1ec3. Tr\u01b0\u1edbc khi thay \u0111\u1ed5i m\u1ee5c ti\u00eau, h\u00e3y x\u00e1c nh\u1eadn ch\u1ebf \u0111\u1ed9 bi\u1ebfn t\u1ea7n, m\u00e3 l\u01b0\u1edbi \u0111i\u1ec7n, k\u1ebft n\u1ed1i bi\u1ebfn \u00e1p v\u00e0 y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 cung c\u1ea5p d\u1ecbch v\u1ee5 \u0111i\u1ec7n tr\u01b0\u1edbc.<\/p>\n

\u0110o l\u01b0\u1eddng xu h\u01b0\u1edbng v\u00e0 m\u1ee9c \u0111\u1ed9 tr\u00ean m\u1ed9t chu k\u1ef3 ho\u1ea1t \u0111\u1ed9ng ho\u00e0n ch\u1ec9nh. M\u1ed9t nh\u00e0 m\u00e1y c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ed9 tr\u1ec5 trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, \u0111\u1ea1t \u0111\u1ebfn m\u1ee9c c\u00e2n b\u1eb1ng khi t\u1ea3i cao \u0111i\u1ec3m v\u00e0 t\u0103ng l\u00ean trong th\u1eddi gian ngh\u1ec9 khi c\u00e1c c\u1ea5p t\u1ee5 \u0111i\u1ec7n v\u1eabn c\u00f2n k\u1ebft n\u1ed1i. L\u01b0u tr\u1eef d\u1eef li\u1ec7u v\u1ec1 tr\u1ea1ng th\u00e1i b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 gi\u1ea3i th\u00edch s\u1ef1 thay \u0111\u1ed5i c\u1ee7a ch\u1ec9 s\u1ed1. M\u1ed9t ch\u1ec9 s\u1ed1 \u0111i\u1ec3m duy nh\u1ea5t kh\u00f4ng \u0111\u1ee7 \u0111\u1ec3 \u0111\u1ecbnh c\u1ee1 ho\u1eb7c \u0111i\u1ec1u ch\u1ec9nh h\u1ec7 th\u1ed1ng \u0111i\u1ec1u ch\u1ec9nh.<\/p>\n

Ki\u1ec3m tra c\u00e1c th\u00f4ng s\u1ed1 \u1edf c\u1ea3 \u0111\u1ea7u c\u1ea5p ngu\u1ed3n v\u00e0 \u0111\u1ea7u v\u00e0o ch\u00ednh khi h\u1ec7 th\u1ed1ng c\u00f3 nhi\u1ec1u \u0111i\u1ec3m b\u00f9 \u0111i\u1ec7n. M\u1ed9t h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef t\u1ee5 \u0111i\u1ec7n c\u1ee5c b\u1ed9 c\u00f3 th\u1ec3 l\u00e0m cho \u0111\u1ea7u c\u1ea5p c\u1ee7a n\u00f3 tr\u00f4ng r\u1ea5t t\u1ed1t, trong khi \u0111\u1ea7u c\u1ea5p kh\u00e1c l\u1ea1i nh\u1eadp kh\u1ea9u c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng. \u0110\u1ed3ng h\u1ed3 \u0111o \u0111i\u1ec7n c\u00f3 th\u1ec3 hi\u1ec3n th\u1ecb k\u1ebft qu\u1ea3 cu\u1ed1i c\u00f9ng \u1edf m\u1ed9t \u0111i\u1ec3m kh\u00e1c. X\u00e1c \u0111\u1ecbnh v\u1ecb tr\u00ed v\u00e0 bi\u00ean gi\u1edbi \u0111o c\u1ee7a CT tr\u00ean s\u01a1 \u0111\u1ed3 m\u1ed9t d\u00e2y.<\/p>\n

\"LBAJI
C\u00e1c b\u1ed9 c\u1ea5p li\u1ec7u \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 r\u00fat ra c\u1ea7n c\u00f3 v\u1ecb tr\u00ed CT v\u00e0 tr\u1ea1ng th\u00e1i ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u1ecdc PF m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/figcaption><\/figure>\n

C\u00e1c xung \u0111i\u1ec7n c\u00f3 th\u1ec3 l\u00e0m bi\u1ebfn d\u1ea1ng d\u1ea1ng s\u00f3ng d\u00f2ng \u0111i\u1ec7n, d\u1eabn \u0111\u1ebfn s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa PF gi\u1ea3 \u0111\u1ecbnh v\u00e0 PF th\u1ef1c t\u1ebf. M\u1ed9t c\u1ee5m t\u1ee5 \u0111i\u1ec7n c\u00f3 th\u1ec3 c\u1ed9ng h\u01b0\u1edfng v\u1edbi \u0111i\u1ec7n tr\u1edf cung c\u1ea5p \u1edf t\u1ea7n s\u1ed1 xung. Tr\u01b0\u1edbc khi th\u00eam c\u00e1c m\u1ea1ch ho\u1eb7c thay \u0111\u1ed5i c\u00e1c cu\u1ed9n c\u1ea3m, b\u1ea1n n\u00ean s\u1eed d\u1ee5ng m\u00e1y ph\u00e2n t\u00edch ch\u1ea5t l\u01b0\u1ee3ng \u0111i\u1ec7n v\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 xung \u0111i\u1ec7n. C\u00e1c c\u1ee5m t\u1ee5 \u0111i\u1ec7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh, b\u1ed9 l\u1ecdc ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c \u0111i\u1ec1u khi\u1ec3n bi\u1ebfn t\u1ea7n c\u00f3 th\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ti\u1ebfp x\u00fac t\u1ee5 \u0111\u01a1n gi\u1ea3n.<\/p>\n

\"LBAJI
C\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p th\u01b0\u1ee3ng l\u01b0u v\u00e0 ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n trung th\u1ebf \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00f4ng su\u1ea5t th\u1ef1c t\u1ebf c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/figcaption><\/figure>\n

Khi \u0111\u1ed3ng h\u1ed3 \u0111o cho th\u1ea5y h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t d\u1eabn h\u01b0\u1edbng b\u1ea5t th\u01b0\u1eddng, tr\u01b0\u1edbc ti\u00ean h\u00e3y ki\u1ec3m tra t\u00ednh \u0111\u00fang \u0111\u1eafn c\u1ee7a c\u1ef1c CT v\u00e0 l\u1eadp b\u1ea3n \u0111\u1ed3 pha, sau \u0111\u00f3 ki\u1ec3m tra c\u00e1c ti\u1ebfp \u0111i\u1ec3m t\u1ee5 \u0111i\u1ec7n v\u00e0 c\u00e0i \u0111\u1eb7t bi\u1ebfn t\u1ea7n. Kh\u00f4ng n\u00ean thay \u0111\u1ed5i h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t m\u1ee5c ti\u00eau cho \u0111\u1ebfn khi \u0111\u00e3 x\u00e1c nh\u1eadn \u0111\u01b0\u1ee3c quy \u01b0\u1edbc ch\u1ec9 s\u1ed1 v\u00e0 c\u1ea5u h\u00ecnh d\u00e2y \u0111i\u1ec7n v\u1edbi t\u1ea3i c\u00f3 s\u1eb5n. \u0110\u1ecdc t\u00e0i li\u1ec7u v\u1ec1 vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1, ng\u01b0\u1ee1ng b\u00e1o \u0111\u1ed9ng v\u00e0 ph\u1ea3n \u1ee9ng b\u1ea3o tr\u00ec trong t\u1ec7p v\u1eadn h\u00e0nh.<\/p>\n

Cu\u1ed1i c\u00f9ng, h\u00e3y x\u00e1c \u0111\u1ecbnh m\u1ed9t ng\u01b0\u1ee1ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec3 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n kh\u00f4ng ph\u1ea3i chuy\u1ec3n \u0111\u1ed5i c\u00e1c giai \u0111o\u1ea1n t\u1ee5 \u0111i\u1ec7n khi c\u00f3 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng nh\u1ecf. Bao g\u1ed3m th\u1eddi gian x\u1ea3, t\u1ea3i t\u1ed1i thi\u1ec3u v\u00e0 gi\u1edbi h\u1ea1n b\u00e1o \u0111\u1ed9ng trong ph\u1ea7n m\u00f4 t\u1ea3 \u0111i\u1ec1u khi\u1ec3n. H\u00e3y xem x\u00e9t m\u1ee5c ti\u00eau d\u1ef1a tr\u00ean y\u00eau c\u1ea7u c\u1ee7a thi\u1ebft b\u1ecb v\u00e0 gi\u1edbi h\u1ea1n c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb, thay v\u00ec ch\u1ecdn PF cao nh\u1ea5t c\u00f3 th\u1ec3 \u1edf m\u1ecdi th\u1eddi \u0111i\u1ec3m.<\/p>\n

H\u00e3y ghi l\u1ea1i c\u00e1c gi\u1edbi h\u1ea1n m\u1ee5c ti\u00eau, gi\u1edbi h\u1ea1n ch\u1ebft v\u00e0 gi\u1edbi h\u1ea1n b\u00e1o \u0111\u1ed9ng trong t\u00e0i li\u1ec7u c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 vi\u1ec7c thay th\u1ebf b\u1ed9 \u0111i\u1ec1u khi\u1ec3n trong t\u01b0\u01a1ng lai kh\u00f4ng l\u00e0m thay \u0111\u1ed5i h\u00e0nh vi d\u1eabn\/ch\u1eadm m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c nh\u1eadn th\u1ea5y.<\/p>\n

Quy\u1ebft \u0111\u1ecbnh \u0111i\u1ec1u ch\u1ec9nh ri\u00eang cho xe m\u00e1y<\/h2>

Vi\u1ec7c kh\u1eafc ph\u1ee5c hi\u1ec7n t\u01b0\u1ee3ng t\u1ea3i qu\u00e1 m\u1ee9c c\u1ee7a \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m d\u00f2ng \u0111i\u1ec7n c\u1ee7a b\u1ed9 c\u1ea5p v\u00e0 t\u1ea3i tr\u1ecdng c\u1ee7a m\u00e1y bi\u1ebfn \u00e1p, nh\u01b0ng k\u00edch th\u01b0\u1edbc t\u1ee5 \u0111i\u1ec7n ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi c\u1ea5u h\u00ecnh ho\u1ea1t \u0111\u1ed9ng th\u1ef1c t\u1ebf. Vi\u1ec7c kh\u1eafc ph\u1ee5c qu\u00e1 m\u1ee9c c\u00f3 th\u1ec3 khi\u1ebfn h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng qu\u00e1 m\u1ee9c khi \u0111\u1ed9ng c\u01a1 \u0111\u01b0\u1ee3c th\u00e1o r\u1eddi ho\u1eb7c ng\u1eaft k\u1ebft n\u1ed1i. Kh\u00f4ng n\u00ean k\u1ebft n\u1ed1i tr\u1ef1c ti\u1ebfp t\u1ee5 \u0111i\u1ec7n v\u1edbi \u0111\u1ea7u ra c\u1ee7a b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ea7n s\u1ed1 bi\u1ebfn \u0111\u1ed5i. Ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n v\u00e0 nghi\u00ean c\u1ee9u v\u1ec1 \u0111\u1ed9 h\u00e0i h\u00f2a.<\/p>

\u0110\u1ed1i v\u1edbi b\u1ed9 kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1, c\u1ea7n ph\u1ed1i h\u1ee3p b\u1ea3o v\u1ec7 qu\u00e1 t\u1ea3i, nhi\u1ec7m v\u1ee5 c\u1ee7a b\u1ed9 ti\u1ebfp x\u00fac, chuy\u1ec3n \u0111\u1ed5i t\u1ee5 \u0111i\u1ec7n v\u00e0 c\u00e0i \u0111\u1eb7t b\u1ed9 ng\u1eaft. Ng\u00e2n h\u00e0ng t\u1ee5 \u0111i\u1ec7n c\u00f3 th\u1ec3 v\u1eabn \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n sau khi \u0111\u1ed9ng c\u01a1 kh\u1edfi \u0111\u1ed9ng tr\u1eeb khi thi\u1ebft k\u1ebf qu\u00e1 t\u1ea3i v\u00e0 ng\u1eaft k\u1ebft n\u1ed1i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u00fang c\u00e1ch. Ki\u1ec3m tra v\u1ecb tr\u00ed c\u1ee7a CT khi s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n PF t\u1ef1 \u0111\u1ed9ng.<\/p>

\u0110\u1ed9 hi\u1ec7u d\u1ee5ng c\u1ee7a \u0111\u1ed9ng c\u01a1 c\u0169ng \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn quy m\u00f4 c\u1ee7a m\u00e1y ph\u00e1t \u0111i\u1ec7n v\u00e0 m\u00e1y bi\u1ebfn \u00e1p. M\u00e1y ph\u00e1t \u0111i\u1ec7n ph\u1ea3i cung c\u1ea5p c\u1ea3 d\u00f2ng \u0111i\u1ec7n th\u1ef1c v\u00e0 d\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng, trong khi m\u00e1y bi\u1ebfn \u00e1p ph\u1ea3i ch\u1ecbu t\u1ea3i nhi\u1ec7t do c\u00f4ng su\u1ea5t th\u1ef1c. Bao g\u1ed3m d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng v\u00e0 PF ho\u1ea1t \u0111\u1ed9ng t\u1ed1i thi\u1ec3u trong nghi\u00ean c\u1ee9u ngu\u1ed3n \u0111i\u1ec7n.<\/p>

C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n
\n
\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

The power factor of a motor describes how effectively the motor converts apparent electrical power into real mechanical output. Induction motors normally have lagging power factor because their magnetic field requires reactive current. The value changes with load, voltage, speed, motor size, efficiency and starting method, so a nameplate or catalog value is not the […]<\/p>\n","protected":false},"author":6,"featured_media":3960,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[53],"tags":[76,83],"class_list":["post-3728","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-switchgear-protection","tag-medium-voltage-switchgear","tag-power-distribution"],"blocksy_meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3728","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/comments?post=3728"}],"version-history":[{"count":1,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3728\/revisions"}],"predecessor-version":[{"id":3731,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/posts\/3728\/revisions\/3731"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/media\/3960"}],"wp:attachment":[{"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/media?parent=3728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/categories?post=3728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lbajiele.com\/vi\/wp-json\/wp\/v2\/tags?post=3728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}