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熱過載繼電器電磁干擾的分析

日期:2024-12-15 02:31
瀏覽次數:784
摘要:
 
隨著科學技術的飛速發展,電子、電力電子、電氣設備應用越來越廣泛,它們在運行過程中會產生較強的電磁干擾和諧波干擾。其中,電磁干擾具有很寬的頻率范圍(從幾百Hz到MHz),又有一定的幅度,經過傳導和輻射會污染電磁環境,對電子設備造成干擾,有時甚至危及操作人員的**。特別是大功率中、短波廣播發射中心,其周圍電磁環境尤為復雜,要想保證設備**穩定運行,電子設備及電源必須具有更高的電磁兼容性。

WRRGN-4313G,WRRGN-4313S,WRRGN-4314G,WRRGN-4314S,

CW-1151DP3S25B2,CW-1151DP3S25B3,CW-1151DP3S25D1,CW-1151DP3S25D2,

YSD-VA1R1P110A,YSD-VA1R1P110B,YSD-VA1R1P110C,YSD-VA1R1P110D,YSD-VA1R1P110E,

YSD-PMA1EP14A,YSD-PMA1EP14B,YSD-PMA1EP14C,YSD-PMA1EP14D,YSD-PMA1EP14E,

YSD-VEDP29A,YSD-VEDP29B,YSD-VEDP29C,YSD-VEDP29D,YSD-VEDP29E,

XMT-625-2Z,XMT-625-2Y,XMT-625-3M,XMT-625-3SM,XMT-625-3F,XMT-625-3X,XMT-625-4Y,

XMTE-7411,智能型雙排四位顯示儀表

YBDTV3A4A1V1D,YBDTV3A4A1V1A2,YBDTV3A4A1V1A1,YBDTV3A4A1V1D2,YBDTV3A4A1V1D1,

KCQ363C,KCQ363D,雙電源自動切換裝置

YWH33V22V0PA2,YWH33V22V0PA1,YWH33V22V0PD2,YWH33V22V0PD1,YWH33V22V0PD,YWH33V22V0PY,

YST/A-S3MT5A2B4S2V0PN,YST/A-S3MT5A2B4S2V1PN,YST/A-S3MT5A2B4S2V2PN,

XMTE234-C0,XMTE234-C3,XMTE234-C4,XMTE234-C5,XMTE234-C6,XMTE234-C7,XMTE234-C9,

CW-XMAP-121-26-5-X,CW-XMAP-121-26-5-Y,CW-XMAP-121-26-5-Z,CW-XMAP-121-26-5-G,CW-XMAP-121-26-53-M,

YSD-NB1A,YSD-NB1B,YSD-NB1C,YSD-NB1D,YSD-NB1E,YSD-NB1Y,YSD-NB9Y,

CME1-100,CME1-225,CME1-400,CME1-630,CME1-800,CME1-1250,電子式塑殼斷路器

308D1MOi,308D1MOd,308D1MOM2,308D2ERi,308D2ERd,308D2ERM2,308D2MOi,

YBDFA1VEV3VED,YBDFA1VEV3VEA2,YBDFA1VEV3V3A1,YBDFA1VEV3VED2,YBDFA1VEV3VED1,

CW-1151DP3S44M1,CW-1151DP3S44M2,CW-1151DP3S44M3,CW-1151DP3S44B1,

YSM/A-H3GT4,YSM/A-H3GT5,YSM/A-H3GT6,YSM/A-H3GT7,YSM/A-H3GT8,

YMH-23511-2M,YMH-23511-2SM,YMH-23511-1M,YMH-23511-1SM,YMH-23511-11M,YMH-23511-11SM,

WRCK2-521,WRCK2-531,WRCK2-522,WRCK2-532,雙支銅-銅鎳熱電偶

首先必須確定干擾源在何處,越靠近干擾源的地方采取措施抑制效果越好,一般來說,電流電壓瞬變的地方(即di/dt或du/dt)即是干擾源,如:繼電器開合、電容充放電、電機運轉、集成電路開關工作等都可能成為干擾源。另外,市電并非理想的50Hz正弦波,其中充滿各種頻率噪聲,也是不可忽視的干擾源。
抑制方法通常采用低噪聲電路、瞬態抑制電路、穩壓電路等,所選用的器件應盡可能采用低噪聲、高頻特性好、穩定性高的電子元件,特別要注意,抑制電路中不適當的器件選擇可能會產生新的干擾源。

CW-SBWZMY131BF,CW-SBWZMY131BN,CW-SBWZMY131BKF,CW-SBWZMY131BKN,

CW-1151HP3E44F-D2,CW-1151HP3E44F,CW-1151HP3E44F-C2,CW-1151HP3E44F-d,

YSD-KV4H2P33A,YSD-KV4H2P33B,YSD-KV4H2P33C,YSD-KV4H2P33D,YSD-KV4H2P33E,

CW-1151DP4E23,CW-1151DP4E23C2,CW-1151DP4E23d,CW-1151DP4E23i,

YQH12A5V15P2A2,YQH12A5V15P2A1,YQH12A5V15P2D2,YQH12A5V15P2D1,YQH12A5V15P2D,YQH12A5V15P2Y,

WRNK-442,WRNK-443,WRNK-444,WRNK-445,WRNK-446,WRNK-448,

WRN2-140A,WRN2-240A,WRN2-440A,WRN2-640A,WRNK2-140A,WRNK2-240A,WRNK2-440A,WRNK2-640A,隔爆熱電偶

YSD-VA4H2P33A,YSD-VA4H2P33B,YSD-VA4H2P33C,YSD-VA4H2P33D,YSD-VA4H2P33E,

YSD-PMV6R1Y2Y,YSD-PMV6R1Y8Y,YSD-PMV6R1Y9Y,YSD-PMV6R1Y10Y,YSD-PMV6R1Y11Y,

YSD-VV2H1P25A,YSD-VV2H1P25B,YSD-VV2H1P25C,YSD-VV2H1P25D,YSD-VV2H1P25E,

CW-3351DP3S24M1,CW-3351DP3S24M2,CW-3351DP3S24M3,CW-3351DP3S24B1,

YBD-TCRAV0A1D,YBD-TCRAV0A1A2,YBD-TCRAV0A1A1,YBD-TCRAV0A1D2,YBD-TCRAV0A1D1,

YXG-15241-B/22,YXG-1525-B/12,

WRPGN-3213G,WRPGN-3213S,WRPGN-3214G,WRPGN-3214S,

WSSH-425FW,WSSH-480N,WSSH-480NW,WSSH-480L,WSSH-480LW,WSSH-480F,WSSH-480FW,

WSSHE-400FW,WSSHE-401N,WSSHE-401NW,WSSHE-401L,WSSHE-401LW,WSSHE-401F,WSSHE-401FW,

WRNT-10,WRET-10,WRFT-10,壓簧固定式熱電偶

CW-TH-LCD-NLL805-95-F,CW-TH-LCD-NLL805-95-L,CW-TH-LCD-NLL805-95-S,CW-TH-LCD-NLL805-95-T,CW-TH-LCD-NLL805- 95-U,

WSSH-483FW,WSSH-484N,WSSH-484NW,WSSH-484L,WSSH-484LW,WSSH-484F,WSSH-484FW,

YBDTV3A4A1V0D,YBDTV3A4A1V0A2,YBDTV3A4A1V0A1,YBDTV3A4A1V0D2,YBDTV3A4A1V0D1,

YBD-TCTGA4V3Y,YBD-TCTGA4YD,YBD-TCTGA4YA2,YBD-TCTGA4YA1,YBD-TCTGA4YD2, 熱電偶溫度變送器

GR-2105,GW-2131,GR-2131,GW-2141,GR-2141,

YSD-NA1H4P34A,YSD-NA1H4P34B,YSD-NA1H4P34C,YSD-NA1H4P34D,YSD-NA1H4P34E,

XMF-PT100-174-M,XMF-PT100-175-M,XMF-PT100-176-M,XMF-PT100-177-M,

抑制干擾源就是盡可能的減小di/dt或du/dt,這是抗干擾設計時**先和*重要的原則。減小di/dt的干擾源,主要是在干擾回路串聯電感或電阻以及增加續流二極管來實現;減小du/dt的干擾源,則是通過在干擾源兩端并聯電容來實現。

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