{"id":21382,"date":"2026-01-21T01:03:40","date_gmt":"2026-01-20T17:03:40","guid":{"rendered":"https:\/\/viox.com\/?p=21382"},"modified":"2026-01-21T01:03:42","modified_gmt":"2026-01-20T17:03:42","slug":"inside-ac-contactor-components-design-logic","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/inside-ac-contactor-components-design-logic\/","title":{"rendered":"B\u00ean trong Contactor AC: C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh, v\u1eadt li\u1ec7u v\u00e0 logic thi\u1ebft k\u1ebf"},"content":{"rendered":"
\n

Gi\u1edbi thi\u1ec7u: Tr\u00ed tu\u1ec7 \u1ea9n sau \u0111i\u1ec1u khi\u1ec3n n\u0103ng l\u01b0\u1ee3ng<\/h2>\n

C\u00f3 l\u1ebd b\u1ea1n ch\u01b0a bao gi\u1edd ngh\u0129 v\u1ec1 thi\u1ebft b\u1ecb h\u00ecnh ch\u1eef nh\u1eadt nh\u1ecf b\u00e9 n\u1eb1m l\u1eb7ng l\u1ebd trong t\u1ee7 \u0111i\u1ec7n c\u1ee7a t\u00f2a nh\u00e0, chuy\u1ec3n m\u1ea1ch ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a c\u01a1 s\u1edf b\u1ea1n h\u00e0ng tr\u0103m l\u1ea7n m\u1ed7i ng\u00e0y. Tuy nhi\u00ean, n\u1ebfu kh\u00f4ng c\u00f3 th\u00e0nh ph\u1ea7n duy nh\u1ea5t n\u00e0y\u2014 Ti\u1ebfp \u0111i\u1ec3m AC<\/a>\u2014c\u00e1c h\u1ec7 th\u1ed1ng c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i, m\u1ea1ng l\u01b0\u1edbi HVAC v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi<\/a> s\u1ebd \u0111\u01a1n gi\u1ea3n l\u00e0 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. H\u01b0\u1edbng d\u1eabn n\u00e0y s\u1ebd \u0111\u01b0a b\u1ea1n v\u00e0o b\u00ean trong contactor AC, ti\u1ebft l\u1ed9 \u0111\u1ed9 ch\u00ednh x\u00e1c k\u1ef9 thu\u1eadt cho ph\u00e9p chuy\u1ec3n m\u1ea1ch an to\u00e0n h\u00e0ng ngh\u00ecn ampe ch\u1ec9 b\u1eb1ng t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n 24 volt.<\/p>\n

\"Multiple
Contactor AC VIOX \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t trong t\u1ee7 ph\u00e2n ph\u1ed1i c\u00f4ng nghi\u1ec7p, qu\u1ea3n l\u00fd ph\u00e2n ph\u1ed1i \u0111i\u1ec7n v\u1edbi r\u01a1 le qu\u00e1 t\u1ea3i t\u00edch h\u1ee3p.<\/figcaption><\/figure>\n

Contactor AC l\u00e0 g\u00ec? \u0110\u1ecbnh ngh\u0129a thi\u1ebft y\u1ebfu<\/h2>\n

M\u1ed9t Ti\u1ebfp \u0111i\u1ec3m AC<\/a> l\u00e0 m\u1ed9t c\u00f4ng t\u1eafc \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 thi\u1ebft l\u1eadp v\u00e0 ng\u1eaft m\u1ea1ch \u0111i\u1ec7n AC mang t\u1ea3i d\u00f2ng \u0111i\u1ec7n cao m\u1ed9t c\u00e1ch l\u1eb7p \u0111i l\u1eb7p l\u1ea1i<\/strong>\u2014th\u01b0\u1eddng t\u1eeb 9A \u0111\u1ebfn 800A+. Kh\u00f4ng gi\u1ed1ng nh\u01b0 r\u01a1 le \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n c\u00f4ng su\u1ea5t th\u1ea5p ho\u1eb7c c\u00f4ng t\u1eafc th\u1ee7 c\u00f4ng kh\u00f4ng ph\u00f9 h\u1ee3p cho ho\u1ea1t \u0111\u1ed9ng th\u01b0\u1eddng xuy\u00ean, contactor AC k\u1ebft h\u1ee3p hi\u1ec7u qu\u1ea3 \u0111i\u1ec7n t\u1eeb v\u1edbi kh\u1ea3 n\u0103ng d\u1eadp h\u1ed3 quang ti\u00ean ti\u1ebfn \u0111\u1ec3 mang l\u1ea1i h\u00e0ng tri\u1ec7u chu k\u1ef3 chuy\u1ec3n m\u1ea1ch an to\u00e0n.<\/p>\n

\"VIOX
M\u1ed9t contactor AC VIOX CT1-32 \u0111\u1ed9c l\u1eadp \u0111\u01b0\u1ee3c g\u1eafn tr\u00ean thanh DIN, cho th\u1ea5y h\u1ec7 s\u1ed1 h\u00ecnh th\u1ee9c nh\u1ecf g\u1ecdn v\u00e0 c\u00e1c \u0111i\u1ec3m k\u1ebft n\u1ed1i.<\/figcaption><\/figure>\n

Nguy\u00ean t\u1eafc ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n d\u1ef1a tr\u00ean l\u1ef1c \u0111i\u1ec7n t\u1eeb: c\u1ea5p t\u00edn hi\u1ec7u \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n \u00e1p th\u1ea5p v\u00e0o cu\u1ed9n d\u00e2y, v\u00e0 n\u00f3 t\u1ea1o ra m\u1ed9t t\u1eeb tr\u01b0\u1eddng k\u00e9o c\u00e1c ti\u1ebfp \u0111i\u1ec3m l\u1ea1i v\u1edbi nhau m\u1ed9t c\u00e1ch c\u01a1 h\u1ecdc, cho ph\u00e9p d\u00f2ng \u0111i\u1ec7n ch\u1ea1y \u0111\u1ebfn t\u1ea3i c\u1ee7a b\u1ea1n. Khi b\u1ea1n ng\u1eaft \u0111i\u1ec7n cu\u1ed9n d\u00e2y, m\u1ed9t c\u01a1 ch\u1ebf l\u00f2 xo s\u1ebd t\u00e1ch c\u00e1c ti\u1ebfp \u0111i\u1ec3m ra ngay l\u1eadp t\u1ee9c\u2014m\u1ed9t qu\u00e1 tr\u00ecnh l\u1eb7p l\u1ea1i h\u00e0ng ngh\u00ecn l\u1ea7n m\u1ed7i ng\u00e0y m\u00e0 kh\u00f4ng c\u1ea7n s\u1ef1 can thi\u1ec7p c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh.<\/p>\n

Contactor AC kh\u00e1c bi\u1ec7t v\u1edbi contactor DC \u1edf m\u1ed9t \u0111i\u1ec3m quan tr\u1ecdng: D\u00f2ng \u0111i\u1ec7n AC t\u1ef1 nhi\u00ean \u0111i qua \u0111i\u1ec3m kh\u00f4ng 100 \u0111\u1ebfn 120 l\u1ea7n m\u1ed7i gi\u00e2y (t\u00f9y thu\u1ed9c v\u00e0o t\u1ea7n s\u1ed1 50Hz ho\u1eb7c 60Hz), \u0111i\u1ec1u n\u00e0y gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c d\u1eadp t\u1eaft h\u1ed3 quang. Contactor DC ph\u1ea3i s\u1eed d\u1ee5ng th\u00eam cu\u1ed9n d\u00e2y d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh v\u00ec d\u00f2ng \u0111i\u1ec7n DC kh\u00f4ng cung c\u1ea5p \u0111i\u1ec3m giao nhau b\u1eb1ng kh\u00f4ng t\u1ef1 nhi\u00ean \u0111\u1ec3 d\u1eadp t\u1eaft h\u1ed3 quang.<\/p>\n

\"Comparison
So s\u00e1nh k\u1ef9 thu\u1eadt: S\u1ef1 kh\u00e1c bi\u1ec7t c\u1ea5u tr\u00fac b\u00ean trong gi\u1eefa Contactor AC l\u00f5i nhi\u1ec1u l\u1edbp (b\u00ean tr\u00e1i) v\u00e0 Contactor DC l\u00f5i \u0111\u1eb7c (b\u00ean ph\u1ea3i).<\/figcaption><\/figure>\n

T\u00e1m th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i: C\u1ea5u t\u1ea1o c\u1ee7a m\u1ed9t Contactor AC<\/h2>\n

M\u1ecdi contactor AC, t\u1eeb c\u00e1c model 9A nh\u1ecf g\u1ecdn \u0111\u1ebfn c\u00e1c thi\u1ebft b\u1ecb 800A+ c\u00f4ng nghi\u1ec7p, \u0111\u1ec1u t\u00edch h\u1ee3p t\u00e1m h\u1ec7 th\u1ed1ng ch\u1ee9c n\u0103ng thi\u1ebft y\u1ebfu:<\/p>\n

\"Technical
H\u00ecnh \u1ea3nh c\u1eaft l\u1edbp chi ti\u1ebft c\u1ee7a contactor AC VIOX, minh h\u1ecda s\u1ef1 s\u1eafp x\u1ebfp ch\u00ednh x\u00e1c c\u1ee7a cu\u1ed9n d\u00e2y, l\u00f5i, ti\u1ebfp \u0111i\u1ec3m v\u00e0 h\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang.<\/figcaption><\/figure>\n

1. Cu\u1ed9n d\u00e2y \u0111i\u1ec7n t\u1eeb (B\u1ed9 truy\u1ec1n \u0111\u1ed9ng)<\/h3>\n

Bao g\u1ed3m 1.000-3.000 v\u00f2ng d\u00e2y \u0111\u1ed3ng tr\u00e1ng men qu\u1ea5n quanh l\u00f5i s\u1eaft nhi\u1ec1u l\u1edbp, cu\u1ed9n d\u00e2y l\u00e0 ngu\u1ed3n \u0111i\u1ec7n c\u1ee7a thi\u1ebft b\u1ecb. Khi \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n, n\u00f3 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng k\u00edch ho\u1ea1t to\u00e0n b\u1ed9 c\u01a1 ch\u1ebf. Thi\u1ebft k\u1ebf cu\u1ed9n d\u00e2y \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 gi\u1ea3m thi\u1ec3u s\u1ef1 ti\u00eau t\u00e1n nhi\u1ec7t trong khi t\u1ed1i \u0111a h\u00f3a l\u1ef1c k\u00e9o. C\u00e1c \u0111\u1ecbnh m\u1ee9c ti\u00eau chu\u1ea9n bao g\u1ed3m 24V, 110V, 230V v\u00e0 380V AC (v\u00e0 c\u00e1c m\u1ee9c DC t\u01b0\u01a1ng \u0111\u01b0\u01a1ng cho c\u00e1c model \u0111\u1ecbnh m\u1ee9c DC).<\/p>\n

2. L\u00f5i s\u1eaft nhi\u1ec1u l\u1edbp (N\u1ec1n t\u1ea3ng)<\/h3>\n

Kh\u00f4ng gi\u1ed1ng nh\u01b0 contactor DC s\u1eed d\u1ee5ng th\u00e9p \u0111\u1eb7c, contactor AC s\u1eed d\u1ee5ng l\u00f5i nhi\u1ec1u l\u1edbp\u2014c\u00e1c t\u1ea5m th\u00e9p m\u1ecfng x\u1ebfp ch\u1ed3ng l\u00ean nhau\u2014\u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t d\u00f2ng \u0111i\u1ec7n xo\u00e1y v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng n\u00f3ng l\u00ean do tr\u1ec5. \u0110\u1ed9 d\u00e0y l\u1edbp th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 0,35mm \u0111\u1ebfn 0,5mm. C\u00e1c thi\u1ebft k\u1ebf hi\u1ec7u su\u1ea5t cao h\u01a1n s\u1eed d\u1ee5ng th\u00e9p c\u00e1n ngu\u1ed9i \u0111\u1ecbnh h\u01b0\u1edbng h\u1ea1t (CRGO) cho c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh v\u01b0\u1ee3t tr\u1ed9i.<\/p>\n

3. V\u00f2ng\/Cu\u1ed9n d\u00e2y che (V\u0169 kh\u00ed b\u00ed m\u1eadt AC)<\/h3>\n

V\u00f2ng \u0111\u1ed3ng nh\u1ecf n\u00e0y \u0111\u01b0\u1ee3c nh\u00fang trong m\u1eb7t l\u00f5i t\u0129nh r\u1ea5t quan tr\u1ecdng cho ho\u1ea1t \u0111\u1ed9ng AC. Khi d\u00f2ng \u0111i\u1ec7n AC \u0111i qua \u0111i\u1ec3m kh\u00f4ng, t\u1eeb tr\u01b0\u1eddng ch\u00ednh s\u1ebd s\u1ee5p \u0111\u1ed5 trong gi\u00e2y l\u00e1t. V\u00f2ng che t\u1ea1o ra m\u1ed9t t\u1eeb th\u00f4ng th\u1ee9 c\u1ea5p l\u1ec7ch pha duy tr\u00ec l\u1ef1c h\u00fat trong qu\u00e1 tr\u00ecnh \u0111i qua \u0111i\u1ec3m kh\u00f4ng, ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng \u201crung\u201d v\u00e0 rung \u0111\u1ed9ng \u0111\u1eb7c tr\u01b0ng n\u1ebfu kh\u00f4ng s\u1ebd g\u00e2y kh\u00f3 kh\u0103n cho contactor AC.<\/p>\n

4. Ph\u1ea7n \u1ee9ng di \u0111\u1ed9ng (Li\u00ean k\u1ebft c\u01a1 h\u1ecdc)<\/h3>\n

T\u1ea5m th\u00e9p ch\u1ecbu l\u1ef1c l\u00f2 xo (nhi\u1ec1u l\u1edbp trong c\u00e1c model AC) ph\u1ea3n \u1ee9ng v\u1edbi l\u1ef1c h\u00fat t\u1eeb t\u00ednh. Kho\u1ea3ng c\u00e1ch di chuy\u1ec3n th\u01b0\u1eddng dao \u0111\u1ed9ng t\u1eeb 2-5mm. Khi cu\u1ed9n d\u00e2y \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n, l\u1ef1c \u0111i\u1ec7n t\u1eeb s\u1ebd v\u01b0\u1ee3t qua l\u1ef1c c\u1ea3n c\u1ee7a l\u00f2 xo v\u00e0 k\u00e9o ph\u1ea7n \u1ee9ng v\u1ec1 ph\u00eda l\u00f5i t\u0129nh, \u0111\u1ea9y c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh l\u1ea1i v\u1edbi nhau m\u1ed9t c\u00e1ch c\u01a1 h\u1ecdc.<\/p>\n

5. Ti\u1ebfp \u0111i\u1ec3m ngu\u1ed3n ch\u00ednh (\u0110\u01b0\u1eddng d\u1eabn t\u1ea3i)<\/h3>\n

\u0110\u00e2y l\u00e0 ph\u1ea7n cu\u1ed1i c\u1ee7a contactor. Th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o t\u1eeb v\u1eadt li\u1ec7u h\u1ee3p kim b\u1ea1c, c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh mang d\u00f2ng \u0111i\u1ec7n t\u1ea3i \u0111\u1ea7y \u0111\u1ee7. \u00c1p su\u1ea5t ti\u1ebfp x\u00fac\u2014\u0111\u01b0\u1ee3c duy tr\u00ec b\u1edfi c\u00e1c l\u00f2 xo \u0111\u00e3 hi\u1ec7u ch\u1ec9nh\u2014dao \u0111\u1ed9ng t\u1eeb 0,5 \u0111\u1ebfn 2,0 N\/mm\u00b2 t\u00f9y thu\u1ed9c v\u00e0o \u0111\u1ecbnh m\u1ee9c d\u00f2ng \u0111i\u1ec7n. C\u00e1c ti\u1ebfp \u0111i\u1ec3m m\u1edbi c\u00f3 \u0111i\u1ec7n tr\u1edf d\u01b0\u1edbi 1 milliohm; tu\u1ed5i th\u1ecd d\u1ecbch v\u1ee5 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i \u0111\u1ebfn kho\u1ea3ng 5 milliohm tr\u01b0\u1edbc khi c\u1ea7n thay th\u1ebf.<\/p>\n

6. C\u1ee5m \u1ed1ng d\u1eadp h\u1ed3 quang (H\u1ec7 th\u1ed1ng an to\u00e0n)<\/h3>\n

Khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m t\u00e1ch ra d\u01b0\u1edbi t\u1ea3i, t\u1eeb tr\u01b0\u1eddng c\u1ea3m \u1ee9ng s\u1ee5p \u0111\u1ed5 c\u1ed1 g\u1eafng duy tr\u00ec d\u00f2ng \u0111i\u1ec7n, t\u1ea1o ra m\u1ed9t h\u1ed3 quang \u0111i\u1ec7n. \u1ed0ng d\u1eadp h\u1ed3 quang\u2014c\u00e1c t\u1ea5m kim lo\u1ea1i song song \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp nh\u01b0 m\u1ed9t c\u00e1i thang\u2014chia v\u00e0 l\u00e0m m\u00e1t h\u1ed3 quang, l\u00e0m t\u0103ng \u0111i\u1ec7n \u00e1p c\u1ea7n thi\u1ebft \u0111\u1ec3 duy tr\u00ec qu\u00e1 tr\u00ecnh ion h\u00f3a cho \u0111\u1ebfn khi h\u1ed3 quang t\u1ef1 nhi\u00ean t\u1eaft \u1edf l\u1ea7n d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111i\u1ec3m kh\u00f4ng ti\u1ebfp theo. C\u00e1c thanh d\u1eabn h\u1ed3 quang (t\u1ea5m \u0111\u1ed3ng ho\u1eb7c th\u00e9p) d\u1eabn h\u1ed3 quang ra kh\u1ecfi c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh, b\u1ea3o v\u1ec7 ch\u00fang kh\u1ecfi h\u01b0 h\u1ecfng do nhi\u1ec7t.<\/p>\n

7. C\u01a1 ch\u1ebf l\u00f2 xo h\u1ed3i v\u1ecb (Failsafe)<\/h3>\n

C\u00e1c l\u00f2 xo \u0111\u00e3 hi\u1ec7u ch\u1ec9nh \u0111\u1ea3m b\u1ea3o ph\u1ea7n \u1ee9ng ngay l\u1eadp t\u1ee9c tr\u1edf v\u1ec1 v\u1ecb tr\u00ed kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea5p \u0111i\u1ec7n khi \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y gi\u1ea3m. Vi\u1ec7c l\u1ef1a ch\u1ecdn t\u1ed1c \u0111\u1ed9 l\u00f2 xo r\u1ea5t quan tr\u1ecdng: qu\u00e1 m\u1ec1m v\u00e0 ph\u1ea7n \u1ee9ng c\u00f3 th\u1ec3 kh\u00f4ng nh\u1ea3 ho\u00e0n to\u00e0n; qu\u00e1 c\u1ee9ng v\u00e0 cu\u1ed9n d\u00e2y c\u00f3 th\u1ec3 kh\u00f4ng t\u1ea1o ra \u0111\u1ee7 l\u1ef1c \u0111\u1ec3 \u0111\u00f3ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m. Nhi\u1ec1u contactor c\u1ea5p c\u00f4ng nghi\u1ec7p s\u1eed d\u1ee5ng l\u00f2 xo k\u00e9p \u0111\u1ec3 d\u1ef1 ph\u00f2ng \u0111\u1ed9 tin c\u1eady.<\/p>\n

8. Ti\u1ebfp \u0111i\u1ec3m ph\u1ee5 (C\u1ea5p \u0111i\u1ec1u khi\u1ec3n)<\/h3>\n

C\u00e1c ti\u1ebfp \u0111i\u1ec3m nh\u1ecf h\u01a1n n\u00e0y (th\u01b0\u1eddng c\u00f3 \u0111\u1ecbnh m\u1ee9c 6-10A) cho ph\u00e9p ch\u1ee9c n\u0103ng m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9c l\u1eadp v\u1edbi m\u1ea1ch ngu\u1ed3n ch\u00ednh. C\u00e1c c\u1ea5u h\u00ecnh ti\u00eau chu\u1ea9n bao g\u1ed3m 1NO+1NC (th\u01b0\u1eddng m\u1edf + th\u01b0\u1eddng \u0111\u00f3ng), 2NO+2NC ho\u1eb7c 4NO. Ch\u00fang cho ph\u00e9p kh\u00f3a li\u00ean \u0111\u1ed9ng, ch\u1ec9 b\u00e1o tr\u1ea1ng th\u00e1i v\u00e0 ph\u1ea3n h\u1ed3i PLC m\u00e0 kh\u00f4ng g\u00e2y nhi\u1ec5u cho m\u1ea1ch ch\u00ednh.<\/p>\n

K\u1ef9 thu\u1eadt v\u1eadt li\u1ec7u: T\u1ea1i sao h\u1ee3p kim b\u1ea1c chi\u1ebfm \u01b0u th\u1ebf trong h\u1ec7 th\u1ed1ng ti\u1ebfp x\u00fac<\/h2>\n

L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac<\/h3>\n

Vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u ti\u1ebfp x\u00fac th\u1ec3 hi\u1ec7n m\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh k\u1ef9 thu\u1eadt quan tr\u1ecdng nh\u1ea5t trong thi\u1ebft k\u1ebf contactor. B\u1ea1c chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p v\u00ec \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n v\u00e0 nhi\u1ec7t ch\u01b0a t\u1eebng c\u00f3 k\u1ebft h\u1ee3p v\u1edbi kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00e0n trong \u0111i\u1ec1u ki\u1ec7n h\u1ed3 quang.<\/p>\n

B\u1ea1c-Niken (AgNi)<\/strong> chi\u1ebfm kho\u1ea3ng 60% contactor AC c\u00f4ng nghi\u1ec7p. Vi\u1ec7c b\u1ed5 sung niken (10-20% theo tr\u1ecdng l\u01b0\u1ee3ng) l\u00e0m t\u0103ng \u0111\u1ed9 c\u1ee9ng so v\u1edbi b\u1ea1c nguy\u00ean ch\u1ea5t trong khi v\u1eabn duy tr\u00ec \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n tuy\u1ec7t v\u1eddi. H\u1ee3p kim n\u00e0y ch\u1ed1ng l\u1ea1i s\u1ef1 m\u00e0i m\u00f2n ti\u1ebfp x\u00fac trong c\u00e1c nhi\u1ec7m v\u1ee5 chuy\u1ec3n m\u1ea1ch th\u00f4ng th\u01b0\u1eddng v\u00e0 mang l\u1ea1i hi\u1ec7u su\u1ea5t ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c tr\u00ean c\u00e1c lo\u1ea1i s\u1eed d\u1ee5ng AC-1 \u0111\u1ebfn AC-4<\/a>.<\/p>\n

B\u1ea1c-Oxide thi\u1ebfc (AgSnO\u2082)<\/strong> \u0111\u1ea1i di\u1ec7n cho ti\u00eau chu\u1ea9n hi\u1ec7n \u0111\u1ea1i cho c\u00e1c \u1ee9ng d\u1ee5ng hi\u1ec7u su\u1ea5t cao. B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c h\u1ea1t oxit thi\u1ebfc ph\u00e2n t\u00e1n m\u1ecbn (th\u01b0\u1eddng l\u00e0 5-15%), c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00e0n ti\u1ebfp x\u00fac v\u00e0 x\u00f3i m\u00f2n \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i. AgSnO\u2082 v\u01b0\u1ee3t tr\u1ed9i h\u01a1n v\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng so v\u1edbi Silver-Cadmium Oxide (AgCdO) c\u0169, g\u00e2y ra r\u1ee7i ro v\u1ec1 s\u1ee9c kh\u1ecfe ngh\u1ec1 nghi\u1ec7p. C\u00e1c h\u1ea1t oxit l\u00e0m t\u0103ng \u0111\u1ed9 c\u1ee9ng v\u00e0 cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh t\u1ef1 ph\u1ee5c h\u1ed3i khi b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac b\u1ecb x\u00f3i m\u00f2n trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng.<\/p>\n

C\u00f4ng ngh\u1ec7 l\u00f5i s\u1eaft v\u00e0 c\u00e1n m\u1ecfng<\/h3>\n

Th\u00e9p silic (th\u00e9p \u0111i\u1ec7n) \u0111\u01b0\u1ee3c c\u00e1n m\u1ecfng \u1edf \u0111\u1ed9 d\u00e0y 0,35-0,5mm t\u1ea1o th\u00e0nh l\u00f5i \u0111i\u1ec7n t\u1eeb. Vi\u1ec7c c\u00e1n m\u1ecfng ph\u00e1 v\u1ee1 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n xo\u00e1y, gi\u1ea3m t\u1ed5n th\u1ea5t l\u00f5i t\u1eeb 80-90% so v\u1edbi c\u00e1c s\u1ea3n ph\u1ea9m t\u01b0\u01a1ng \u0111\u01b0\u01a1ng b\u1eb1ng th\u00e9p \u0111\u1eb7c. T\u1ed5ng t\u1ed5n th\u1ea5t l\u00f5i trong m\u1ed9t contactor AC 32A \u0111i\u1ec3n h\u00ecnh dao \u0111\u1ed9ng t\u1eeb 2-5 watt trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng\u2014\u0111\u1ee7 \u0111\u00e1ng k\u1ec3 \u0111\u1ec3 y\u00eau c\u1ea7u xem x\u00e9t qu\u1ea3n l\u00fd nhi\u1ec7t.<\/p>\n

\u0110\u1ed9 b\u00e3o h\u00f2a l\u00f5i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn: l\u00f5i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 b\u00e3o h\u00f2a \u1edf m\u1eadt \u0111\u1ed9 t\u1eeb th\u00f4ng kho\u1ea3ng 1,2-1,5 Tesla trong qu\u00e1 tr\u00ecnh gi\u1eef, \u0111\u1ea3m b\u1ea3o l\u1ef1c k\u00e9o t\u1eeb t\u00ednh v\u1eabn kh\u00f4ng \u0111\u1ed5i trong ph\u1ea1m vi dung sai \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y t\u1eeb 85% \u0111\u1ebfn 110% \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong IEC 60947-4.<\/p>\n

D\u00e2y v\u00e0 c\u00e1ch \u0111i\u1ec7n t\u1eeb b\u1eb1ng \u0111\u1ed3ng<\/h3>\n

Cu\u1ed9n d\u00e2y s\u1eed d\u1ee5ng \u0111\u1ed3ng kh\u00f4ng oxy c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao (th\u01b0\u1eddng l\u00e0 99,99% nguy\u00ean ch\u1ea5t) \u0111\u1ec3 gi\u1ea3m thi\u1ec3u \u0111i\u1ec7n tr\u1edf v\u00e0 sinh nhi\u1ec7t. L\u1edbp c\u00e1ch \u0111i\u1ec7n d\u00e2y s\u1eed d\u1ee5ng polyesterimide (Lo\u1ea1i F, \u0111\u1ecbnh m\u1ee9c 155\u00b0C) ho\u1eb7c polyimide (Lo\u1ea1i H, \u0111\u1ecbnh m\u1ee9c 180\u00b0C) \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c chu k\u1ef3 nhi\u1ec7t li\u00ean t\u1ee5c.<\/p>\n

C\u00e1c t\u00ednh to\u00e1n t\u0103ng nhi\u1ec7t cu\u1ed9n d\u00e2y trong m\u1ed9t contactor AC 32A ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c th\u01b0\u1eddng cho th\u1ea5y nhi\u1ec7t \u0111\u1ed9 t\u0103ng 40-50\u00b0C so v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh khi \u0111\u01b0\u1ee3c \u0111\u1ecbnh m\u1ee9c \u0111\u00fang c\u00e1ch\u2014\u0111\u1ee7 \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i 80-90\u00b0C trong m\u00f4i tr\u01b0\u1eddng 40\u00b0C. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng xung quanh l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft: c\u1ee9 m\u1ed7i 10\u00b0C tr\u00ean 40\u00b0C s\u1ebd l\u00e0m gi\u1ea3m d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c kho\u1ea3ng 10-15%.<\/p>\n

V\u1eadt li\u1ec7u v\u1ecf b\u1ecdc v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u00e1y<\/h3>\n

V\u1eadt li\u1ec7u v\u1ecf b\u1ecdc th\u01b0\u1eddng bao g\u1ed3m nylon 6 nhi\u1ec7t d\u1ebbo ho\u1eb7c c\u00e1c h\u1ee3p ch\u1ea5t polyamide v\u1edbi c\u00e1c ch\u1ea5t ph\u1ee5 gia ch\u1ed1ng ch\u00e1y \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u UL 94 V-0. V\u1ecf b\u1ecdc ph\u1ea3i ch\u1ee9a n\u0103ng l\u01b0\u1ee3ng h\u1ed3 quang b\u00ean trong m\u00e0 kh\u00f4ng b\u1ecb v\u1ee1\u2014m\u1ed9t c\u00e2n nh\u1eafc an to\u00e0n quan tr\u1ecdng khi x\u1ea3y ra l\u1ed7i b\u00ean trong. \u0110\u1ed9 d\u00e0y v\u1eadt li\u1ec7u v\u00e0 c\u00e1c m\u1eabu g\u00e2n \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a \u0111\u1ec3 ph\u00e2n ph\u1ed1i \u00e1p su\u1ea5t h\u1ed3 quang trong khi v\u1eabn duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u00e1ch \u0111i\u1ec7n.<\/p>\n

Logic thi\u1ebft k\u1ebf AC: T\u1ea1i sao Contactor AC ho\u1ea1t \u0111\u1ed9ng kh\u00e1c<\/h2>\n

\u01afu \u0111i\u1ec3m c\u1ee7a vi\u1ec7c \u0111i qua \u0111i\u1ec3m kh\u00f4ng<\/h3>\n

D\u00f2ng \u0111i\u1ec7n AC dao \u0111\u1ed9ng 100 ho\u1eb7c 120 l\u1ea7n m\u1ed7i gi\u00e2y (50Hz ho\u1eb7c 60Hz). \u0110\u1eb7c \u0111i\u1ec3m c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n n\u00e0y v\u1ec1 c\u01a1 b\u1ea3n gi\u00fap \u0111\u01a1n gi\u1ea3n h\u00f3a vi\u1ec7c d\u1eadp t\u1eaft h\u1ed3 quang so v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng DC. Khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m t\u00e1ch ra trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng AC, h\u1ed3 quang s\u1ebd t\u1ef1 nhi\u00ean t\u1eaft \u1edf l\u1ea7n d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111i\u1ec3m kh\u00f4ng ti\u1ebfp theo\u2014kho\u1ea3ng 10-20 mili gi\u00e2y m\u1ed9t l\u1ea7n. H\u1ec7 th\u1ed1ng \u1ed1ng d\u1eadp h\u1ed3 quang ch\u1ec9 c\u1ea7n l\u00e0m m\u00e1t v\u00e0 k\u00e9o d\u00e0i h\u1ed3 quang \u0111\u1ee7 \u0111\u1ec3 ng\u0103n ch\u1eb7n vi\u1ec7c t\u00e1i k\u00edch ho\u1ea1t.<\/p>\n

\"AC
Tr\u00ecnh t\u1ef1 ho\u1ea1t \u0111\u1ed9ng: H\u00ecnh dung qu\u00e1 tr\u00ecnh t\u1ea1o t\u1eeb th\u00f4ng, h\u00fat ph\u1ea7n \u1ee9ng v\u00e0 \u0111\u00f3ng ti\u1ebfp \u0111i\u1ec3m trong contactor AC.<\/figcaption><\/figure>\n

C\u00e1c h\u1ec7 th\u1ed1ng DC ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi m\u1ed9t th\u00e1ch th\u1ee9c ho\u00e0n to\u00e0n kh\u00e1c: D\u00f2ng \u0111i\u1ec7n DC kh\u00f4ng bao gi\u1edd \u0111i qua \u0111i\u1ec3m kh\u00f4ng, v\u00ec v\u1eady h\u1ed3 quang ti\u1ebfp t\u1ee5c v\u00f4 th\u1eddi h\u1ea1n tr\u1eeb khi b\u1ecb d\u1eadp t\u1eaft c\u01b0\u1ee1ng b\u1ee9c. \u0110\u00e2y l\u00e0 l\u00fd do t\u1ea1i sao contactor DC s\u1eed d\u1ee5ng cu\u1ed9n d\u00e2y d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng vu\u00f4ng g\u00f3c \u0111\u1ec3 \u0111\u1ea9y v\u1eadt l\u00fd h\u1ed3 quang v\u00e0o c\u00e1c \u1ed1ng k\u00e9o d\u00e0i, n\u01a1i n\u00f3 k\u00e9o d\u00e0i, ngu\u1ed9i \u0111i v\u00e0 v\u1ee1 ra\u2014m\u1ed9t qu\u00e1 tr\u00ecnh ch\u1ee7 \u0111\u1ed9ng \u0111\u00f2i h\u1ecfi th\u00eam n\u0103ng l\u01b0\u1ee3ng v\u00e0 s\u1ef1 ph\u1ee9c t\u1ea1p.<\/p>\n

T\u00ecm hi\u1ec3u s\u00e2u v\u1ec1 cu\u1ed9n d\u00e2y che<\/h3>\n

Cu\u1ed9n d\u00e2y che (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 v\u00f2ng che ho\u1eb7c v\u00f2ng ng\u1eafn m\u1ea1ch) th\u1ec3 hi\u1ec7n m\u1ed9t gi\u1ea3i ph\u00e1p k\u1ef9 thu\u1eadt thanh l\u1ecbch cho m\u1ed9t v\u1ea5n \u0111\u1ec1 AC c\u01a1 b\u1ea3n. Khi d\u00f2ng \u0111i\u1ec7n AC ch\u1ea1y qua cu\u1ed9n d\u00e2y ch\u00ednh, n\u00f3 t\u1ea1o ra m\u1ed9t t\u1eeb th\u00f4ng ch\u00ednh trong l\u00f5i. Th\u00f4ng l\u01b0\u1ee3ng n\u00e0y \u0111\u1ecbnh k\u1ef3 gi\u1ea3m xu\u1ed1ng b\u1eb1ng kh\u00f4ng khi d\u00f2ng \u0111i\u1ec7n AC dao \u0111\u1ed9ng. Trong qu\u00e1 tr\u00ecnh \u0111i qua \u0111i\u1ec3m kh\u00f4ng n\u00e0y, l\u1ef1c h\u00fat tr\u00ean ph\u1ea7n \u1ee9ng t\u1ea1m th\u1eddi bi\u1ebfn m\u1ea5t\u2014n\u1ebfu ph\u1ea7n \u1ee9ng m\u1edf m\u1ed9t ph\u1ea7n, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 g\u00e2y ra m\u1ea5t ti\u1ebfp x\u00fac kh\u00f4ng li\u00ean t\u1ee5c ho\u1eb7c \u201crung\u201d.\u201d<\/p>\n

V\u00f2ng che\u2014m\u1ed9t v\u00f2ng \u0111\u1ed3ng m\u1ed9t v\u00f2ng \u0111\u01b0\u1ee3c nh\u00fang trong m\u1eb7t l\u00f5i t\u0129nh\u2014t\u1ea1o ra m\u1ed9t d\u00f2ng \u0111i\u1ec7n th\u1ee9 c\u1ea5p c\u1ea3m \u1ee9ng trong qu\u00e1 tr\u00ecnh thay \u0111\u1ed5i th\u00f4ng l\u01b0\u1ee3ng. Theo \u0111\u1ecbnh lu\u1eadt Lenz, d\u00f2ng \u0111i\u1ec7n c\u1ea3m \u1ee9ng n\u00e0y t\u1ea1o ra m\u1ed9t t\u1eeb th\u00f4ng th\u1ee9 c\u1ea5p l\u1ec7ch pha \u0111\u1ea1t c\u1ef1c \u0111\u1ea1i trong qu\u00e1 tr\u00ecnh th\u00f4ng l\u01b0\u1ee3ng ch\u00ednh \u0111i qua \u0111i\u1ec3m kh\u00f4ng. Hi\u1ec7u \u1ee9ng k\u1ebft h\u1ee3p duy tr\u00ec l\u1ef1c h\u00fat g\u1ea7n nh\u01b0 kh\u00f4ng \u0111\u1ed5i trong chu k\u1ef3 AC, ng\u0103n ch\u1eb7n rung v\u00e0 cho ph\u00e9p ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru, y\u00ean t\u0129nh.<\/p>\n

Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt cho th\u1ea5y c\u00e1c v\u00f2ng che th\u01b0\u1eddng chi\u1ebfm 15-25% l\u1ef1c gi\u1eef trong qu\u00e1 tr\u00ecnh \u0111i qua \u0111i\u1ec3m kh\u00f4ng v\u00e0 lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n hi\u1ec7n t\u01b0\u1ee3ng n\u1ea3y ti\u1ebfp x\u00fac trong tr\u00ecnh t\u1ef1 \u0111\u00f3ng.<\/p>\n

\u00c1p su\u1ea5t ti\u1ebfp x\u00fac v\u00e0 thao t\u00e1c nhanh<\/h3>\n

Contactor AC s\u1eed d\u1ee5ng c\u01a1 ch\u1ebf \u0111\u00f3ng ti\u1ebfp \u0111i\u1ec3m phi tuy\u1ebfn t\u00ednh m\u1ed9t c\u00e1ch c\u00f3 ch\u1ee7 \u00fd. L\u1ef1c l\u00f2 xo t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3 g\u1ea7n khi \u0111\u00f3ng ho\u00e0n to\u00e0n (th\u01b0\u1eddng l\u00e0 80-100N \u0111\u1ed1i v\u1edbi contactor 32A), t\u1ea1o ra m\u1ed9t \u201cthao t\u00e1c nhanh\u201d nhanh ch\u00f3ng t\u0103ng t\u1ed1c c\u00e1c ti\u1ebfp \u0111i\u1ec3m l\u1ea1i v\u1edbi nhau. Thao t\u00e1c nhanh n\u00e0y gi\u1ea3m thi\u1ec3u hi\u1ec7n t\u01b0\u1ee3ng n\u1ea3y ti\u1ebfp x\u00fac, n\u1ebfu kh\u00f4ng s\u1ebd t\u1ea1o ra c\u00e1c h\u1ed3 quang nh\u1ecf v\u00e0 \u0111\u1ea9y nhanh qu\u00e1 tr\u00ecnh m\u00e0i m\u00f2n ti\u1ebfp x\u00fac.<\/p>\n

\u0110\u01b0\u1eddng cong l\u1ef1c \u0111i\u1ec7n t\u1eeb so v\u1edbi h\u00e0nh tr\u00ecnh \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf c\u1ea9n th\u1eadn \u0111\u1ec3 b\u1eaft \u0111\u1ea7u \u1edf kho\u1ea3ng 50% l\u1ef1c l\u00f2 xo \u1edf khe h\u1edf kh\u00f4ng kh\u00ed t\u1ed1i \u0111a, t\u0103ng l\u00ean 150-200% l\u1ef1c l\u00f2 xo khi \u0111\u00f3ng ho\u00e0n to\u00e0n. \u0110i\u1ec1u n\u00e0y \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng nh\u1eadn \u0111\u00e1ng tin c\u1eady ngay c\u1ea3 \u1edf \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y 85% \u0111\u1ed3ng th\u1eddi cung c\u1ea5p kh\u1ea3 n\u0103ng gi\u1eef \u1ed5n \u0111\u1ecbnh \u1edf \u0111i\u1ec7n \u00e1p cao h\u01a1n.<\/p>\n

Hi\u1ec7u su\u1ea5t th\u00e0nh ph\u1ea7n: Ph\u00e2n t\u00edch so s\u00e1nh<\/h2>\n\n\n\n\n\n\n\n\n
Tham s\u1ed1<\/th>\nAC-1 (\u0110i\u1ec7n tr\u1edf)<\/th>\nAC-3 (Kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1)<\/th>\nAC-4 (C\u1eafm\/Ch\u1ea1y b\u1ed9)<\/th>\n<\/tr>\n
D\u00f2ng \u0111i\u1ec7n \u0111\u00f3ng<\/strong><\/td>\n1,5\u00d7 Ie<\/td>\n6\u00d7 Ie<\/td>\n6\u00d7 Ie<\/td>\n<\/tr>\n
D\u00f2ng \u0111i\u1ec7n c\u1eaft<\/strong><\/td>\n1\u00d7 Ie<\/td>\n1\u00d7 Ie<\/td>\n6\u00d7 Ie<\/td>\n<\/tr>\n
Cu\u1ed9c s\u1ed1ng \u0111i\u1ec7n<\/strong><\/td>\n2-5 tri\u1ec7u ho\u1ea1t \u0111\u1ed9ng<\/td>\n1-2 tri\u1ec7u ho\u1ea1t \u0111\u1ed9ng<\/td>\n200-500K thao t\u00e1c<\/td>\n<\/tr>\n
Hao m\u00f2n ti\u1ebfp \u0111i\u1ec3m<\/strong><\/td>\nT\u1ed1i thi\u1ec3u<\/td>\nV\u1eeba ph\u1ea3i<\/td>\nCao<\/td>\n<\/tr>\n
Chi ph\u00ed\/\u0110\u01a1n v\u1ecb \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n$40-80<\/td>\n$50-120<\/td>\n$80-180<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Hi\u1ec7u su\u1ea5t v\u1eadt li\u1ec7u trong \u0111i\u1ec1u ki\u1ec7n th\u1ef1c t\u1ebf<\/h2>\n\n\n\n\n\n\n\n\n\n
V\u1eadt li\u1ec7u<\/th>\n\u1ee8ng d\u1ee5ng<\/th>\n\u01afu \u0111i\u1ec3m<\/th>\nH\u1ea1n ch\u1ebf<\/th>\n<\/tr>\n
AgSnO\u2082<\/strong><\/td>\nAC-3\/AC-4 t\u1ea3i n\u1eb7ng<\/td>\nKh\u1ea3 n\u0103ng ch\u1ed1ng d\u00ednh t\u1ed1t h\u01a1n, tu\u00e2n th\u1ee7 m\u00f4i tr\u01b0\u1eddng<\/td>\nChi ph\u00ed ban \u0111\u1ea7u cao h\u01a1n (+15-25% so v\u1edbi AgNi)<\/td>\n<\/tr>\n
AgNi<\/strong><\/td>\nAC-1\/AC-2 th\u00f4ng th\u01b0\u1eddng<\/td>\nGi\u00e1 tr\u1ecb tuy\u1ec7t v\u1eddi, \u0111\u1ed9 tin c\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh<\/td>\n\u00cdt kh\u1ea3 n\u0103ng ch\u1ecbu t\u1ea3i chuy\u1ec3n m\u1ea1ch n\u1eb7ng<\/td>\n<\/tr>\n
Th\u00e9p silic (l\u00f5i th\u00e9p l\u00e1)<\/strong><\/td>\nV\u1eadt li\u1ec7u l\u00f5i<\/td>\nGi\u1ea3m t\u1ed5n th\u1ea5t d\u00f2ng \u0111i\u1ec7n xo\u00e1y 90%<\/td>\nY\u00eau c\u1ea7u \u0111\u1ed9 d\u00e0y l\u00e1 th\u00e9p ch\u00ednh x\u00e1c<\/td>\n<\/tr>\n
Th\u00e9p CRGO<\/strong><\/td>\nL\u00f5i cao c\u1ea5p<\/td>\nHi\u1ec7u su\u1ea5t cao h\u01a1n 40%<\/td>\n\u0110\u1eaft ti\u1ec1n, ch\u1ec9 d\u00e0nh cho c\u00e1c \u1ee9ng d\u1ee5ng cao c\u1ea5p<\/td>\n<\/tr>\n
Cu\u1ed9n d\u00e2y \u0111\u1ed3ng<\/strong><\/td>\nX\u00f4n xao<\/td>\n\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i<\/td>\nY\u00eau c\u1ea7u b\u1ea3o v\u1ec7 c\u00e1ch \u0111i\u1ec7n<\/td>\n<\/tr>\n
Nylon 6 (FR)<\/strong><\/td>\nBao v\u00e2y<\/td>\nCh\u1ed1ng ch\u00e1y, \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc<\/td>\nGi\u1edbi h\u1ea1n nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn 155-180\u00b0C<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Nh\u1eefng C\u00e2u H\u1ecfi Th\u01b0\u1eddng<\/h2>\n

H: T\u1ea1i sao c\u00f4ng t\u1eafc t\u01a1 AC \u0111\u00f4i khi ph\u00e1t ra ti\u1ebfng vo vo?<\/strong><\/p>\n

\u0110: Thi\u1ebft k\u1ebf v\u00f2ng ng\u1eafn m\u1ea1ch kh\u00f4ng ph\u00f9 h\u1ee3p ho\u1eb7c c\u00e1c l\u00e1 th\u00e9p b\u1ecb h\u1ecfng c\u00f3 th\u1ec3 khi\u1ebfn l\u1ef1c h\u00fat dao \u0111\u1ed9ng theo d\u00f2ng \u0111i\u1ec7n AC, t\u1ea1o ra rung \u0111\u1ed9ng c\u00f3 th\u1ec3 nghe \u0111\u01b0\u1ee3c. Thi\u1ebft k\u1ebf v\u00f2ng ng\u1eafn m\u1ea1ch ph\u00f9 h\u1ee3p lo\u1ea1i b\u1ecf \u0111i\u1ec1u n\u00e0y\u2014c\u00f4ng t\u1eafc t\u01a1 AC cao c\u1ea5p ho\u1ea1t \u0111\u1ed9ng g\u1ea7n nh\u01b0 im l\u1eb7ng.<\/p>\n

H: T\u00f4i c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng c\u00f4ng t\u1eafc t\u01a1 cu\u1ed9n d\u00e2y 24V DC thay cho c\u00f4ng t\u1eafc t\u01a1 cu\u1ed9n d\u00e2y 230V AC kh\u00f4ng?<\/strong><\/p>\n

\u0110: Kh\u00f4ng. C\u00e1c thi\u1ebft k\u1ebf cu\u1ed9n d\u00e2y kh\u00e1c nhau \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c m\u1ee9c \u0111i\u1ec7n \u00e1p t\u01b0\u01a1ng \u1ee9ng. Cu\u1ed9n d\u00e2y AC s\u1eed d\u1ee5ng l\u00f5i th\u00e9p l\u00e1 \u0111\u1ec3 gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t do d\u00f2ng \u0111i\u1ec7n xo\u00e1y; cu\u1ed9n d\u00e2y DC s\u1eed d\u1ee5ng l\u00f5i \u0111\u1eb7c. Lu\u00f4n kh\u1edbp \u0111i\u1ec7n \u00e1p cu\u1ed9n d\u00e2y v\u1edbi \u0111i\u1ec7n \u00e1p m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n.<\/p>\n

H: \u0110i\u1ec1u g\u00ec g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng d\u00ednh ti\u1ebfp \u0111i\u1ec3m?<\/strong><\/p>\n

\u0110: D\u00ednh ti\u1ebfp \u0111i\u1ec3m th\u01b0\u1eddng l\u00e0 k\u1ebft qu\u1ea3 c\u1ee7a d\u00f2ng \u0111i\u1ec7n kh\u1edfi \u0111\u1ed9ng qu\u00e1 m\u1ee9c (qu\u00e1 \u0111i\u1ec7n \u00e1p, chuy\u1ec3n m\u1ea1ch t\u1ee5 \u0111i\u1ec7n), ti\u1ebfp \u0111i\u1ec3m b\u1ecb m\u00f2n v\u1edbi \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac t\u0103ng l\u00ean ho\u1eb7c thi\u1ebft k\u1ebf h\u1ed9p d\u1eadp h\u1ed3 quang kh\u00f4ng \u0111\u1ee7. B\u1ea3o v\u1ec7 m\u1ea1ch ph\u00f9 h\u1ee3p v\u00e0 thay th\u1ebf ti\u1ebfp \u0111i\u1ec3m k\u1ecbp th\u1eddi ng\u0103n ng\u1eeba d\u00ednh.<\/p>\n

H: L\u00e0m c\u00e1ch n\u00e0o \u0111\u1ec3 bi\u1ebft c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ee7a c\u00f4ng t\u1eafc t\u01a1 c\u1ee7a t\u00f4i b\u1ecb m\u00f2n?<\/strong><\/p>\n

\u0110: \u0110o \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac l\u00e0 ti\u00eau chu\u1ea9n v\u00e0ng. C\u00e1c ti\u1ebfp \u0111i\u1ec3m m\u1edbi \u0111o <1 m\u03a9; d\u1ecbch v\u1ee5 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c k\u00e9o d\u00e0i \u0111\u1ebfn ~5 m\u03a9. \u0110i\u1ec7n tr\u1edf tr\u00ean 5 m\u03a9 cho th\u1ea5y nhu c\u1ea7u thay th\u1ebf s\u1eafp x\u1ea3y ra. Ki\u1ec3m tra tr\u1ef1c quan c\u00f3 th\u1ec3 cho th\u1ea5y s\u1ef1 r\u1ed7 ho\u1eb7c t\u1ea1o h\u1ed1 tr\u00ean b\u1ec1 m\u1eb7t b\u1ea1c.<\/p>\n

H: T\u1ea1i sao c\u00f4ng t\u1eafc t\u01a1 AC ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng l\u00e1 th\u00e9p trong khi c\u00f4ng t\u1eafc t\u01a1 DC th\u00ec kh\u00f4ng c\u1ea7n?<\/strong><\/p>\n

\u0110: D\u00f2ng \u0111i\u1ec7n AC t\u1ea1o ra d\u00f2ng \u0111i\u1ec7n xo\u00e1y trong l\u00f5i khi t\u1eeb tr\u01b0\u1eddng thay \u0111\u1ed5i 100-120 l\u1ea7n m\u1ed7i gi\u00e2y. C\u00e1c d\u00f2ng \u0111i\u1ec7n xo\u00e1y n\u00e0y t\u1ea1o ra nhi\u1ec7t th\u1ea3i. L\u1edbp l\u00e1 th\u00e9p ph\u00e1 v\u1ee1 c\u00e1c \u0111\u01b0\u1eddng d\u1eabn d\u00f2ng \u0111i\u1ec7n xo\u00e1y, gi\u1ea3m \u0111\u00e1ng k\u1ec3 t\u1ed5n th\u1ea5t. D\u00f2ng \u0111i\u1ec7n DC kh\u00f4ng thay \u0111\u1ed5i, v\u00ec v\u1eady l\u00f5i \u0111\u1eb7c ho\u1ea1t \u0111\u1ed9ng t\u1ed1t.<\/p>\n

H: S\u1ef1 kh\u00e1c bi\u1ec7t \u0111i\u1ec3n h\u00ecnh gi\u1eefa tu\u1ed5i th\u1ecd c\u01a1 h\u1ecdc v\u00e0 tu\u1ed5i th\u1ecd \u0111i\u1ec7n l\u00e0 g\u00ec?<\/strong><\/p>\n

\u0110: M\u1ed9t c\u00f4ng t\u1eafc t\u01a1 AC \u0111i\u1ec3n h\u00ecnh c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c 10 tri\u1ec7u chu k\u1ef3 tu\u1ed5i th\u1ecd c\u01a1 h\u1ecdc (thao t\u00e1c kh\u00f4ng t\u1ea3i) nh\u01b0ng ch\u1ec9 1-2 tri\u1ec7u chu k\u1ef3 tu\u1ed5i th\u1ecd \u0111i\u1ec7n \u1edf d\u00f2ng \u0111i\u1ec7n AC-3 \u0111\u1ecbnh m\u1ee9c. S\u1ef1 kh\u00e1c bi\u1ec7t ph\u1ea3n \u00e1nh s\u1ef1 x\u00f3i m\u00f2n ti\u1ebfp \u0111i\u1ec3m trong qu\u00e1 tr\u00ecnh ph\u00f3ng h\u1ed3 quang\u2014m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng ch\u1ec9 x\u1ea3y ra khi c\u00f3 t\u1ea3i.<\/p>\n

Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/h2>\n