雙電源切換裝置從產(chǎn)品結(jié)構(gòu)、性能及所遵循的標(biāo)準(zhǔn)三個(gè)方面，分別將CB級(jí)與PC級(jí)雙電源切換裝置；PC級(jí)雙電源切換裝置與刀開關(guān)（電動(dòng)）進(jìn)行對比和分析。

從中不難發(fā)現(xiàn)，PC級(jí)雙電源切換裝置是理想的雙電源切換開關(guān)。

兩者機(jī)械設(shè)計(jì)理念不同

CB級(jí)是由斷路器組成，而斷路器是以分?jǐn)嚯娀橐讶危笏臋C(jī)械應(yīng)快速脫扣。因而斷路器的機(jī)構(gòu)存在滑扣、再扣問題；而PC級(jí)產(chǎn)品不存在該方面問題。PC級(jí)產(chǎn)品的可靠性遠(yuǎn)高于CB級(jí)產(chǎn)品。

YSD-PA4H4P210A,YSD-PA4H4P210B,YSD-PA4H4P210C,YSD-PA4H4P210D,YSD-PA4H4P210E,

YSD-FV4H1P37A,YSD-FV4H1P37B,YSD-FV4H1P37C,YSD-FV4H1P37D,YSD-FV4H1P37E,

WRRGN-4411G,WRRGN-4411S,WRRGN-4412G,WRRGN-4312S,

YBD-TCBBA4V3Y,YBD-TCBBA4YD,YBD-TCBBA4YA2,YBD-TCBBA4YA1,YBD-TCBBA4YD2, 熱電偶溫度變送器

YSD-NV0R4Y7A,YSD-NV0R4Y7B,YSD-NV0R4Y7C,YSD-NV0R4Y7D,YSD-NV0R4Y7E,

YQH33A5YPA2,YQH33A5YPA1,YQH33A5YPD2,YQH33A5YPD1,YQH33A5YPD,YQH33A5YPY,

YBDFV5V3VEA4D,YBDFV5V3VEA4A2,YBDFV5V3VEA4A1,YBDFV5V3VEA4D2,YBDFV5V3VEA4D1,

CW-XMT-535-3Z,CW-XMT-535-3Y,CW-XMT-535-4M,CW-XMT-535-4SM,CW-XMT-535-4F,CW-XMT-535-4X,CW-XMT-535-4Z,

YWA33A1V5W6A2,YWA33A1V5W6A1,YWA33A1V5W6D2,YWA33A1V5W6D1,YWA33A1V5W6D,YWA33A1V5W6Y,

WSSNE-513LW,WSSNE-513F,WSSNE-513FW,WSSNE-514N,WSSNE-514NW,WSSNE-514L,WSSNE-514LW,

XMF-PT100-250-M,XMF-PT100-251-M,XMF-PT100-252-M,XMF-PT100-253-M,

1151GP8M23,1151GP8M24,1151GP8M25,1151GP8M33,1151GP0M23,1151GP0M24,

XTMA-100-D,XTMA-102-D,XTMA-103-D,XTMA-104-D,XTMA-105-D,XTMA-106-D,智能數(shù)字顯示調(diào)節(jié)儀

WRN-8426D,WRN-8427D,WRN-8428D,WRN-8429D,

WSSC-B414FW,WSSC-B415N,WSSC-B415NW,WSSC-B415L,WSSC-B415LW,WSSC-B415F,

TH-LCD-L801-01-V,TH-LCD-L801-01-W,TH-LCD-L801-01-G,TH-LCD-L801-01-O,TH-LCD-L801-01-E,

YSD-AV2H3Y8A,YSD-AV2H3Y8B,YSD-AV2H3Y8C,YSD-AV2H3Y8D,YSD-AV2H3Y8E,

XMTE212-C0,XMTE212-C3,XMTE212-C4,XMTE212-C5,XMTE212-C6,XMTE212-C7,XMTE212-C9,

WRPLN-1410N,WRPLN-1410G,WRPLN-1410C,WRPLN-1411N,WRPLN-1411G,WRPLN-1411C,

WREH-62414N,WREH-62414G,WREH-62414L,WREH-62414C,WREH-62415N,WREH-62415G,

WZG-241D,WZG-241A,WZG-242D,WZG-242A,WZG-251D,WZG-251A,WZG-252D,WZG-252A,

CW-131AISPMM2,CW-131AISPMM3,CW-131AISPMLM,CW-131AISPMQ,壓力變送器

斷路器不承載短路耐受電流，觸頭壓力小供電電路發(fā)生短路時(shí)，當(dāng)觸頭被斥開產(chǎn)生限流作用，從而分?jǐn)喽搪冯娏?；而PC級(jí)ATS應(yīng)承受20Ie及以上過載電流。觸頭壓力大不易被斥開，因而觸頭不易被熔焊。這一特性對消防供電系統(tǒng)尤為重要。

雙電源在轉(zhuǎn)換過程中存在電源疊加問題

PC級(jí)雙電源切換裝置充分考慮了這一因素。PC級(jí)ATS的電氣間隙、爬電距離的180%、150%（標(biāo)準(zhǔn)要求）。因而PC級(jí)ATS**性更好。

雙電源切換裝置觸頭材料的選擇角度不同

LSG13-3,液面放煙花蒸汽夾套接頭

WSSNC-515FW,WSSNC-B400N,WSSNC-B400NW,WSSNC-B400L,WSSNC-B400LW,WSSNC-B400F,

YSD-VA4H2P34A,YSD-VA4H2P34B,YSD-VA4H2P34C,YSD-VA4H2P34D,YSD-VA4H2P34E,

CW-1151HP3S24E-M1,CW-1151HP3S24E-M2,CW-1151HP3S24F-J,CW-1151HP3S24F-s,

YBDTV6A4YND,YBDTV6A4YNA2,YBDTV6A4YNA1,YBDTV6A4YND2,YBDTV6A4YND1,

LSG11-6,表面熱電偶連接頭

UBG-2124,UBG-2126,

3351TG0SAM3B13I1,3351TG9SAM3B13I1,3351TG8SAM3B13I1,3351TG7SAM3B13I1,

WSSE-404L,WSSE-404LW,WSSE-404F,WSSE-404FW,WSSE-405N,WSSE-405NW,WSSE-405L,

YSU-424,YSU-425,YSU-426,YSU-524,YSU-525,YSU-526,YSU-624,YSU-625,YSU-626,

YBD-TCuAYA2D2,YBD-TCuAYA2D1,YBD-TCuAYA2Y,YBD-TCuAYA1D,YBD-TCuAYA1A2,

1151GP6E12,1151GP6E53,1151GP6E54,1151GP6E55,1151GP6E22,1151GP0S33,

WRE-8426I,WRE-8427I,WRE-8428I,WRE-8429I,

XMTA-7903,XMTA-7902,XMTA-7901,

LSG14-6,內(nèi)外接頭

WRQGN-2413G,WRQGN-2413S,WRQGN-2414G,WRQGN-2414S,

CW-BP2088AIIERM2,CW-BP2088AIIERM3,CW-BP2088AIIERZ,CW-BP2088AIIERQ,

YBD-TCSAV2YD1,YBD-TCSAV2YY,YBD-TCSAV3A4D,YBD-TCSAV3A4A2,YBD-TCSAV3A4A1,

WRNGN-3311G,WRNGN-3311S,WRNGN-3312G,WRNGN-3312S,

CW3351LT6SB0,CW3351LT6SB2,CW3351LT6SB4,CW3351LT6SB6,CW3351LT6SC0,

YWH33V22V0CA2,YWH33V22V0CA1,YWH33V22V0CD2,YWH33V22V0CD1,YWH33V22V0CD,YWH33V22V0CY,

WRNLN-1210N,WRNLN-1210G,WRNLN-1210C,WRNLN-1211N,WRNLN-1211G,WRNLN-1211C,循環(huán)硫化床鍋爐專用熱電偶

WZP-1212A,WZP2-1212A,WZP-1312A,WZP2-1312A,裝配式鉑電阻

CW-131AIS0C1M2,CW-131AIS0C1M3,CW-131AIS0C1LM,CW-131AIS0C1Q,

WRN-140A,WRN-240A,WRN-440A,WRN-640A,WRNK-140A,WRNK-240A,WRNK-440A,WRNK-640A,隔爆熱電偶

YW12V1V1W1A2,YW12V1V1W1A1,YW12V1V1W1D2,YW12V1V1W1D1,YW12V1V1W1D,YW12V1V1W1Y,

WREK-841n﹡D,WREK-842n﹡D,隔爆型多對式熱電偶

斷路器常常選擇銀鎢、銀碳化鎢材料配對，這有利于分?jǐn)嚯娀?。但該類觸頭材料易氧化，備用觸頭長期暴露在外，在其表現(xiàn)易形成阻礙導(dǎo)電、難驅(qū)除的氧化物，當(dāng)備用觸頭一但投入使用，觸頭溫升增高易造成開關(guān)燒毀甚至爆炸；而PC級(jí)ATS充分考慮了觸頭材料氧化帶來的后果，尤其是日本共立的ATS其接點(diǎn)有硅合金制成，高度抗燃燒，而且當(dāng)開關(guān)運(yùn)行時(shí)，每一次接觸自滑觸點(diǎn)可以清理灰塵和氧化，這大大提高了ATS的使用壽命，降低了風(fēng)險(xiǎn)。