任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m韓國(guó)Sinwoo S-CON變送器。中山立訊電氣有限公司,中山朗立電氣有限公司
PDB-1A1-W PDB-1A1-X PDB-1A1-Y PDB-1A1-Z
PDB-1A2-W PDB-1A2-X PDB-1A2-Y PDB-1A2-Z
PDB-1A3-W PDB-1A3-X PDB-1A3-Y PDB-1A3-Z
PDB-1AR-W PDB-1AR-X PDB-1AR-Y PDB-1AR-Z
PDB-1B1-W PDB-1B1-X PDB-1B1-Y PDB-1B1-Z
PDB-1B2-W PDB-1B2-X PDB-1B2-Y PDB-1B2-Z
PDB-1B3-W PDB-1B3-X PDB-1B3-Y PDB-1B3-Z
PDB-1BR-W PDB-1BR-X PDB-1BR-Y PDB-1BR-Z
PDB-1R1-W PDB-1R1-X PDB-1R1-Y PDB-1R1-Z
PDB-1R2-W PDB-1R2-X PDB-1R2-Y PDB-1R2-Z
PDB-1R3-W PDB-1R3-X PDB-1R3-Y PDB-1R3-Z
PDB-1RR-W PDB-1RR-X PDB-1RR-Y PDB-1RR-Z
PDB-2A1-W PDB-2A1-X PDB-2A1-Y PDB-2A1-Z
PDB-2A2-W PDB-2A2-X PDB-2A2-Y PDB-2A2-Z
PDB-2A3-W PDB-2A3-X PDB-2A3-Y PDB-2A3-Z
PDB-2AR-W PDB-2AR-X PDB-2AR-Y PDB-2AR-Z
PDB-2B1-W PDB-2B1-X PDB-2B1-Y PDB-2B1-Z
PDB-2B2-W PDB-2B2-X PDB-2B2-Y PDB-2B2-Z
PDB-2B3-W PDB-2B3-X PDB-2B3-Y PDB-2B3-Z
PDB-2BR-W PDB-2BR-X PDB-2BR-Y PDB-2BR-Z
PDB-2R1-W PDB-2R1-X PDB-2R1-Y PDB-2R1-Z
PDB-2R2-W PDB-2R2-X PDB-2R2-Y PDB-2R2-Z
PDB-2R3-W PDB-2R3-X PDB-2R3-Y PDB-2R3-Z
PDB-2RR-W PDB-2RR-X PDB-2RR-Y PDB-2RR-Z
P/D-4AA-W P/D-4AA-X P/D-4AA-Y P/D-4AA-Z
P/D-4AB-W P/D-4AB-X P/D-4AB-Y P/D-4AB-Z
P/D-4AC-W P/D-4AC-X P/D-4AC-Y P/D-4AC-Z
P/D-4AD-W P/D-4AD-X P/D-4AD-Y P/D-4AD-Z
P/D-4AR-W P/D-4AR-X P/D-4AR-Y P/D-4AR-Z
P/D-4AN-W P/D-4AN-X P/D-4AN-Y P/D-4AN-Z
P/D-4BA-W P/D-4BA-X P/D-4BA-Y P/D-4BA-Z
P/D-4BB-W P/D-4BB-X P/D-4BB-Y P/D-4BB-Z
P/D-4BC-W P/D-4BC-X P/D-4BC-Y P/D-4BC-Z
給繼電器輸入一組電壓，且在供電回路中串入電流表進(jìn)行監(jiān)測(cè)。慢慢調(diào)高電源電壓，聽到繼電器吸合聲時(shí)，記下該吸合電壓和吸合電流。為求準(zhǔn)確，可以試多幾次而求平均值。釋放電壓電流也是像上述那樣連接測(cè)試，當(dāng)繼電器發(fā)生吸合后，再逐漸降低供電電壓，當(dāng)聽到繼電器再次發(fā)生釋放聲音時(shí)，記下此時(shí)的電壓和電流，亦可嘗試多幾次而取得平均的釋放電壓和釋放電流。一般情況下，繼電器的釋放電壓約在吸合電壓的10～50%，如果釋放電壓太。ㄐ∮1/10的吸合電壓），則不能正常使用了，這樣會(huì)對(duì)電路的穩(wěn)定性造成威脅，工作不可靠。電符號(hào)和觸點(diǎn)編輯繼電器線圈在電路中用一個(gè)長(zhǎng)方框符號(hào)表示，如果繼電器有兩個(gè)線圈，就畫兩個(gè)并列的長(zhǎng)方框。同時(shí)在長(zhǎng)方框內(nèi)或長(zhǎng)方框旁標(biāo)上繼電器的文字符號(hào)“J”。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
P/D-4BD-W P/D-4BD-X P/D-4BD-Y P/D-4BD-Z
P/D-4BR-W P/D-4BR-X P/D-4BR-Y P/D-4BR-Z
P/D-4BN-W P/D-4BN-X P/D-4BN-Y P/D-4BN-Z
P/D-4CA-W P/D-4CA-X P/D-4CA-Y P/D-4CA-Z
P/D-4CB-W P/D-4CB-X P/D-4CB-Y P/D-4CB-Z
P/D-4CC-W P/D-4CC-X P/D-4CC-Y P/D-4CC-Z
P/D-4CD-W P/D-4CD-X P/D-4CD-Y P/D-4CD-Z
P/D-4CR-W P/D-4CR-X P/D-4CR-Y P/D-4CR-Z
P/D-4CN-W P/D-4CN-X P/D-4CN-Y P/D-4CN-Z
P/D-4DA-W P/D-4DA-X P/D-4DA-Y P/D-4DA-Z
P/D-4DB-W P/D-4DB-X P/D-4DB-Y P/D-4DB-Z
P/D-4DC-W P/D-4DC-X P/D-4DC-Y P/D-4DC-Z
P/D-4DD-W P/D-4DD-X P/D-4DD-Y P/D-4DD-Z
P/D-4DR-W P/D-4DR-X P/D-4DR-Y P/D-4DR-Z
P/D-4DN-W P/D-4DN-X P/D-4DN-Y P/D-4DN-Z
P/D-4RA-W P/D-4RA-X P/D-4RA-Y P/D-4RA-Z
P/D-4RB-W P/D-4RB-X P/D-4RB-Y P/D-4RB-Z
P/D-4RC-W P/D-4RC-X P/D-4RC-Y P/D-4RC-Z
P/D-4RD-W P/D-4RD-X P/D-4RD-Y P/D-4RD-Z
P/D-4RR-W P/D-4RR-X P/D-4RR-Y P/D-4RR-Z
P/D-4RN-W P/D-4RN-X P/D-4RN-Y P/D-4RN-Z
P/D-9AA-W P/D-9AA-X P/D-9AA-Y P/D-9AA-Z
P/D-9AB-W P/D-9AB-X P/D-9AB-Y P/D-9AB-Z
P/D-9AC-W P/D-9AC-X P/D-9AC-Y P/D-9AC-Z
P/D-9AD-W P/D-9AD-X P/D-9AD-Y P/D-9AD-Z
P/D-9AR-W P/D-9AR-X P/D-9AR-Y P/D-9AR-Z
P/D-9AN-W P/D-9AN-X P/D-9AN-Y P/D-9AN-Z
P/D-9BA-W P/D-9BA-X P/D-9BA-Y P/D-9BA-Z
P/D-9BB-W P/D-9BB-X P/D-9BB-Y P/D-9BB-Z
P/D-9BC-W P/D-9BC-X P/D-9BC-Y P/D-9BC-Z
P/D-9BD-W P/D-9BD-X P/D-9BD-Y P/D-9BD-Z
P/D-9BR-W P/D-9BR-X P/D-9BR-Y P/D-9BR-Z
P/D-9BN-W P/D-9BN-X P/D-9BN-Y P/D-9BN-Z
P/D-9CA-W P/D-9CA-X P/D-9CA-Y P/D-9CA-Z
P/D-9CB-W P/D-9CB-X P/D-9CB-Y P/D-9CB-Z
P/D-9CC-W P/D-9CC-X P/D-9CC-Y P/D-9CC-Z
P/D-9CD-W P/D-9CD-X P/D-9CD-Y P/D-9CD-Z
P/D-9CR-W P/D-9CR-X P/D-9CR-Y P/D-9CR-Z
P/D-9CN-W P/D-9CN-X P/D-9CN-Y P/D-9CN-Z
P/D-9DA-W P/D-9DA-X P/D-9DA-Y P/D-9DA-Z
P/D-9DB-W P/D-9DB-X P/D-9DB-Y P/D-9DB-Z
P/D-9DC-W P/D-9DC-X P/D-9DC-Y P/D-9DC-Z
P/D-9DD-W P/D-9DD-X P/D-9DD-Y P/D-9DD-Z
P/D-9DR-W P/D-9DR-X P/D-9DR-Y P/D-9DR-Z
所以開關(guān)管數(shù)越多，DC/DC轉(zhuǎn)換器的輸出功率越大，四管式比兩管式輸出功率大一倍，單管式輸出功率只有四管式的1/4。非隔離式轉(zhuǎn)換器與隔離式轉(zhuǎn)換器的組合，可以得到單個(gè)轉(zhuǎn)換器所不具備的一些特性。按能量的傳輸來分，DC/DC轉(zhuǎn)換器有單向傳輸和雙向傳輸兩種。具有雙向傳輸功能的DC/DC轉(zhuǎn)換器，既可以從電源側(cè)向負(fù)載側(cè)傳輸功率，也可以從負(fù)載側(cè)向電源側(cè)傳輸功率。DC/DC轉(zhuǎn)換器也可以分為自激式和他控式。借助轉(zhuǎn)換器本身的正反饋信號(hào)實(shí)現(xiàn)開關(guān)管自持周期性開關(guān)的轉(zhuǎn)換器，叫做自激式轉(zhuǎn)換器，如洛耶爾（Royer）轉(zhuǎn)換器就是一種典型的推挽自激式轉(zhuǎn)換器。他控式DC/DC轉(zhuǎn)換器中的開關(guān)器件控制信號(hào)，是由外部專門的控制電路產(chǎn)生的。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
P/D-9DN-W P/D-9DN-X P/D-9DN-Y P/D-9DN-Z
P/D-9RA-W P/D-9RA-X P/D-9RA-Y P/D-9RA-Z
P/D-9RB-W P/D-9RB-X P/D-9RB-Y P/D-9RB-Z
P/D-9RC-W P/D-9RC-X P/D-9RC-Y P/D-9RC-Z
P/D-9RD-W P/D-9RD-X P/D-9RD-Y P/D-9RD-Z
P/D-9RR-W P/D-9RR-X P/D-9RR-Y P/D-9RR-Z
P/D-9RN-W P/D-9RN-X P/D-9RN-Y P/D-9RN-Z
PMC-2A1-W PMC-2A1-X PMC-2A1-Y PMC-2A1-X
PMC-2A2-W PMC-2A2-X PMC-2A2-Y PMC-2A2-X
PMC-2A3-W PMC-2A3-X PMC-2A3-Y PMC-2A3-X
PMC-2A4-W PMC-2A4-X PMC-2A4-Y PMC-2A4-X
PMC-2A5-W PMC-2A5-X PMC-2A5-Y PMC-2A5-X
PMC-2A6-W PMC-2A6-X PMC-2A6-Y PMC-2A6-X
PMC-2A7-W PMC-2A7-X PMC-2A7-Y PMC-2A7-X
PMC-2A8-W PMC-2A8-X PMC-2A8-Y PMC-2A8-X
PMC-2AR-W PMC-2AR-X PMC-2AR-Y PMC-2AR-X
PMC-2AN-W PMC-2AN-X PMC-2AN-Y PMC-2AN-X
PMC-2R1-W PMC-2R1-X PMC-2R1-Y PMC-2R1-X
PMC-2R2-W PMC-2R2-X PMC-2R2-Y PMC-2R2-X
PMC-2R3-W PMC-2R3-X PMC-2R3-Y PMC-2R3-X
PMC-2R4-W PMC-2R4-X PMC-2R4-Y PMC-2R4-X
PMC-2R5-W PMC-2R5-X PMC-2R5-Y PMC-2R5-X
PMC-2R6-W PMC-2R6-X PMC-2R6-Y PMC-2R6-X
PMC-2R7-W PMC-2R7-X PMC-2R7-Y PMC-2R7-X
PMC-2R8-W PMC-2R8-X PMC-2R8-Y PMC-2R8-X
PMC-2RR-W PMC-2RR-X PMC-2RR-Y PMC-2RR-X
PMC-2RN-W PMC-2RN-X PMC-2RN-Y PMC-2RN-X
PMC-4A1-W PMC-4A1-X PMC-4A1-Y PMC-4A1-X
PMC-4A2-W PMC-4A2-X PMC-4A2-Y PMC-4A2-X
PMC-4A3-W PMC-4A3-X PMC-4A3-Y PMC-4A3-X
PMC-4A4-W PMC-4A4-X PMC-4A4-Y PMC-4A4-X
PMC-4A5-W PMC-4A5-X PMC-4A5-Y PMC-4A5-X
PMC-4A6-W PMC-4A6-X PMC-4A6-Y PMC-4A6-X
PMC-4A7-W PMC-4A7-X PMC-4A7-Y PMC-4A7-X
PMC-4A8-W PMC-4A8-X PMC-4A8-Y PMC-4A8-X
PMC-4AR-W PMC-4AR-X PMC-4AR-Y PMC-4AR-X
PMC-4AN-W PMC-4AN-X PMC-4AN-Y PMC-4AN-X
PMC-4R1-W PMC-4R1-X PMC-4R1-Y PMC-4R1-X
PMC-4R2-W PMC-4R2-X PMC-4R2-Y PMC-4R2-X
PMC-4R3-W PMC-4R3-X PMC-4R3-Y PMC-4R3-X
PMC-4R4-W PMC-4R4-X PMC-4R4-Y PMC-4R4-X
PMC-4R5-W PMC-4R5-X PMC-4R5-Y PMC-4R5-X
PMC-4R6-W PMC-4R6-X PMC-4R6-Y PMC-4R6-X
PMC-4R7-W PMC-4R7-X PMC-4R7-Y PMC-4R7-X
測(cè)它的正、反向電阻，電阻小時(shí)，萬(wàn)用表黑表筆接的是控制極G，可以用剛才演示用的示教板電路。接通電源開關(guān)S，按一下按鈕開關(guān)SB，燈泡發(fā)光就是好的，不發(fā)光就是壞的。測(cè)量方法鑒別可控硅三個(gè)極的方法很簡(jiǎn)單，根據(jù)P-N結(jié)的原理，只要用萬(wàn)用表測(cè)量一下三個(gè)極之間的電阻值就可以。陽(yáng)極與陰極之間的正向和反向電阻在幾百千歐以上，陽(yáng)極和控制極之間的正向和反向電阻在幾百千歐以上（它們之間有兩個(gè)P-N結(jié)，而且方向相反，因此陽(yáng)極和控制極正反向都不通）[1]？刂茦O與陰極之間是一個(gè)P-N結(jié)，因此它的正向電阻大約在幾歐-幾百歐的范圍，反向電阻比正向電阻要大？墒强刂茦O二極管特性是不太理想的，反向不是完全呈阻斷狀態(tài)的，可以有比較大的電流通過。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
PMC-4R8-W PMC-4R8-X PMC-4R8-Y PMC-4R8-X
PMC-4RR-W PMC-4RR-X PMC-4RR-Y PMC-4RR-X
PMC-4RN-W PMC-4RN-X PMC-4RN-Y PMC-4RN-X
PMC-7A1-W PMC-7A1-X PMC-7A1-Y PMC-7A1-X
PMC-7A2-W PMC-7A2-X PMC-7A2-Y PMC-7A2-X
PMC-7A3-W PMC-7A3-X PMC-7A3-Y PMC-7A3-X
PMC-7A4-W PMC-7A4-X PMC-7A4-Y PMC-7A4-X
PMC-7A5-W PMC-7A5-X PMC-7A5-Y PMC-7A5-X
PMC-7A6-W PMC-7A6-X PMC-7A6-Y PMC-7A6-X
PMC-7A7-W PMC-7A7-X PMC-7A7-Y PMC-7A7-X
PMC-7A8-W PMC-7A8-X PMC-7A8-Y PMC-7A8-X
PMC-7AR-W PMC-7AR-X PMC-7AR-Y PMC-7AR-X
PMC-7AN-W PMC-7AN-X PMC-7AN-Y PMC-7AN-X
PMC-7R1-W PMC-7R1-X PMC-7R1-Y PMC-7R1-X
PMC-7R2-W PMC-7R2-X PMC-7R2-Y PMC-7R2-X
PMC-7R3-W PMC-7R3-X PMC-7R3-Y PMC-7R3-X
PMC-7R4-W PMC-7R4-X PMC-7R4-Y PMC-7R4-X
PMC-7R5-W PMC-7R5-X PMC-7R5-Y PMC-7R5-X
PMC-7R6-W PMC-7R6-X PMC-7R6-Y PMC-7R6-X
PMC-7R7-W PMC-7R7-X PMC-7R7-Y PMC-7R7-X
PMC-7R8-W PMC-7R8-X PMC-7R8-Y PMC-7R8-X
PMC-7RR-W PMC-7RR-X PMC-7RR-Y PMC-7RR-X
PMC-7RN-W PMC-7RN-X PMC-7RN-Y PMC-7RN-X
PMC-9A1-W PMC-9A1-X PMC-9A1-Y PMC-9A1-X
PMC-9A2-W PMC-9A2-X PMC-9A2-Y PMC-9A2-X
PMC-9A3-W PMC-9A3-X PMC-9A3-Y PMC-9A3-X
PMC-9A4-W PMC-9A4-X PMC-9A4-Y PMC-9A4-X
PMC-9A5-W PMC-9A5-X PMC-9A5-Y PMC-9A5-X
PMC-9A6-W PMC-9A6-X PMC-9A6-Y PMC-9A6-X
PMC-9A7-W PMC-9A7-X PMC-9A7-Y PMC-9A7-X
PMC-9A8-W PMC-9A8-X PMC-9A8-Y PMC-9A8-X
PMC-9AR-W PMC-9AR-X PMC-9AR-Y PMC-9AR-X
PMC-9AN-W PMC-9AN-X PMC-9AN-Y PMC-9AN-X
PMC-9R1-W PMC-9R1-X PMC-9R1-Y PMC-9R1-X
PMC-9R2-W PMC-9R2-X PMC-9R2-Y PMC-9R2-X
PMC-9R3-W PMC-9R3-X PMC-9R3-Y PMC-9R3-X
PMC-9R4-W PMC-9R4-X PMC-9R4-Y PMC-9R4-X
PMC-9R5-W PMC-9R5-X PMC-9R5-Y PMC-9R5-X
PMC-9R6-W PMC-9R6-X PMC-9R6-Y PMC-9R6-X
PMC-9R7-W PMC-9R7-X PMC-9R7-Y PMC-9R7-X
傳統(tǒng)的直流調(diào)速技術(shù)因體積大故障率高而應(yīng)用受限。20世紀(jì)60年代以后，電力電子器件普遍應(yīng)用了晶閘管及其升級(jí)產(chǎn)品。但其調(diào)速性能遠(yuǎn)遠(yuǎn)無法滿足需要。1968年以丹佛斯為代表的高技術(shù)企業(yè)開始批量化生產(chǎn)變頻器，開啟了變頻器工業(yè)化的新時(shí)代。20世紀(jì)70年代開始，脈寬調(diào)制變壓變頻(PWM－VVVF)調(diào)速的研究得到突破，20世紀(jì)80年代以后微處理器技術(shù)的完善使得各種優(yōu)化算法得以容易的實(shí)現(xiàn)。20世紀(jì)80年代中后期，美、日、德、英等發(fā)達(dá)國(guó)家的VVVF變頻器技術(shù)實(shí)用化，商品投入市場(chǎng)，得到了廣泛應(yīng)用。早的變頻器可能是日本人買了英國(guó)專利研制的。不過美國(guó)和德國(guó)憑借電子元件生產(chǎn)和電子技術(shù)的優(yōu)勢(shì)，高端產(chǎn)品迅速搶占市場(chǎng)。步入21世紀(jì)后。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
PMC-9R8-W PMC-9R8-X PMC-9R8-Y PMC-9R8-X
PMC-9RR-W PMC-9RR-X PMC-9RR-Y PMC-9RR-X
PMC-9RN-W PMC-9RN-X PMC-9RN-Y PMC-9RN-X
AS-2A1-W AS-2A1-X AS-2A1-Y AS-2A1-Z
AS-2A2-W AS-2A2-X AS-2A2-Y AS-2A2-Z
AS-2A3-W AS-2A3-X AS-2A3-Y AS-2A3-Z
AS-2A4-W AS-2A4-X AS-2A4-Y AS-2A4-Z
AS-2AR-W AS-2AR-X AS-2AR-Y AS-2AR-Z
AS-2B1-W AS-2B1-X AS-2B1-Y AS-2B1-Z
AS-2B2-W AS-2B2-X AS-2B2-Y AS-2B2-Z
AS-2B3-W AS-2B3-X AS-2B3-Y AS-2B3-Z
AS-2B4-W AS-2B4-X AS-2B4-Y AS-2B4-Z
AS-2BR-W AS-2BR-X AS-2BR-Y AS-2BR-Z
AS-2C1-W AS-2C1-X AS-2C1-Y AS-2C1-Z
AS-2C2-W AS-2C2-X AS-2C2-Y AS-2C2-Z
AS-2C3-W AS-2C3-X AS-2C3-Y AS-2C3-Z
AS-2C4-W AS-2C4-X AS-2C4-Y AS-2C4-Z
AS-2CR-W AS-2CR-X AS-2CR-Y AS-2CR-Z
AS-2D1-W AS-2D1-X AS-2D1-Y AS-2D1-Z
AS-2D2-W AS-2D2-X AS-2D2-Y AS-2D2-Z
AS-2D3-W AS-2D3-X AS-2D3-Y AS-2D3-Z
AS-2D4-W AS-2D4-X AS-2D4-Y AS-2D4-Z
AS-2DR-W AS-2DR-X AS-2DR-Y AS-2DR-Z
AS-2E1-W AS-2E1-X AS-2E1-Y AS-2E1-Z
AS-2E2-W AS-2E2-X AS-2E2-Y AS-2E2-Z
AS-2E3-W AS-2E3-X AS-2E3-Y AS-2E3-Z
AS-2E4-W AS-2E4-X AS-2E4-Y AS-2E4-Z
AS-2ER-W AS-2ER-X AS-2ER-Y AS-2ER-Z
AS-2G1-W AS-2G1-X AS-2G1-Y AS-2G1-Z
AS-2G2-W AS-2G2-X AS-2G2-Y AS-2G2-Z
AS-2G3-W AS-2G3-X AS-2G3-Y AS-2G3-Z
AS-2G4-W AS-2G4-X AS-2G4-Y AS-2G4-Z
AS-2GR-W AS-2GR-X AS-2GR-Y AS-2GR-Z
AS-2R1-W AS-2R1-X AS-2R1-Y AS-2R1-Z
AS-2R2-W AS-2R2-X AS-2R2-Y AS-2R2-Z
AS-2R3-W AS-2R3-X AS-2R3-Y AS-2R3-Z
AS-2R4-W AS-2R4-X AS-2R4-Y AS-2R4-Z
AS-2RR-W AS-2RR-X AS-2RR-Y AS-2RR-Z
AS-4A1-W AS-4A1-X AS-4A1-Y AS-4A1-Z
AS-4A2-W AS-4A2-X AS-4A2-Y AS-4A2-Z
AS-4A3-W AS-4A3-X AS-4A3-Y AS-4A3-Z
AS-4A4-W AS-4A4-X AS-4A4-Y AS-4A4-Z
[8]實(shí)現(xiàn)Band—Band控制按磁鏈和轉(zhuǎn)矩的Band—Band控制產(chǎn)生PWM信號(hào)，對(duì)逆變器開關(guān)狀態(tài)進(jìn)行控制。[8]矩陣式交—交變頻具有快速的轉(zhuǎn)矩響應(yīng)(<2ms)，很高的速度精度(±2%，無PG反饋)，高轉(zhuǎn)矩精度(<+3%)；同時(shí)還具有較高的起動(dòng)轉(zhuǎn)矩及高轉(zhuǎn)矩精度，尤其在低速時(shí)(包括0速度時(shí))，可輸出150%～200%轉(zhuǎn)矩。[8]變頻器的選用選用變頻器的類型，按照生產(chǎn)機(jī)械的類型、調(diào)速范圍、靜態(tài)速度精度、起動(dòng)轉(zhuǎn)矩的要求，決定選用那種控制方式的變頻器合適。所謂合適是既要好用，又要經(jīng)濟(jì)，以滿足工藝和生產(chǎn)的基本條件和要求。需要控制的電機(jī)及變頻器自身1）電機(jī)的極數(shù)。一般電機(jī)極數(shù)以不多于(極為宜，否則變頻器容量就要適當(dāng)加大。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
AS-4AR-W AS-4AR-X AS-4AR-Y AS-4AR-Z
AS-4B1-W AS-4B1-X AS-4B1-Y AS-4B1-Z
AS-4B2-W AS-4B2-X AS-4B2-Y AS-4B2-Z
AS-4B3-W AS-4B3-X AS-4B3-Y AS-4B3-Z
AS-4B4-W AS-4B4-X AS-4B4-Y AS-4B4-Z
AS-4BR-W AS-4BR-X AS-4BR-Y AS-4BR-Z
AS-4C1-W AS-4C1-X AS-4C1-Y AS-4C1-Z
AS-4C2-W AS-4C2-X AS-4C2-Y AS-4C2-Z
AS-4C3-W AS-4C3-X AS-4C3-Y AS-4C3-Z
AS-4C4-W AS-4C4-X AS-4C4-Y AS-4C4-Z
AS-4CR-W AS-4CR-X AS-4CR-Y AS-4CR-Z
AS-4D1-W AS-4D1-X AS-4D1-Y AS-4D1-Z
AS-4D2-W AS-4D2-X AS-4D2-Y AS-4D2-Z
AS-4D3-W AS-4D3-X AS-4D3-Y AS-4D3-Z
AS-4D4-W AS-4D4-X AS-4D4-Y AS-4D4-Z
AS-4DR-W AS-4DR-X AS-4DR-Y AS-4DR-Z
AS-4E1-W AS-4E1-X AS-4E1-Y AS-4E1-Z
AS-4E2-W AS-4E2-X AS-4E2-Y AS-4E2-Z
AS-4E3-W AS-4E3-X AS-4E3-Y AS-4E3-Z
AS-4E4-W AS-4E4-X AS-4E4-Y AS-4E4-Z
AS-4ER-W AS-4ER-X AS-4ER-Y AS-4ER-Z
AS-4G1-W AS-4G1-X AS-4G1-Y AS-4G1-Z
AS-4G2-W AS-4G2-X AS-4G2-Y AS-4G2-Z
AS-4G3-W AS-4G3-X AS-4G3-Y AS-4G3-Z
AS-4G4-W AS-4G4-X AS-4G4-Y AS-4G4-Z
AS-4GR-W AS-4GR-X AS-4GR-Y AS-4GR-Z
AS-4R1-W AS-4R1-X AS-4R1-Y AS-4R1-Z
AS-4R2-W AS-4R2-X AS-4R2-Y AS-4R2-Z
AS-4R3-W AS-4R3-X AS-4R3-Y AS-4R3-Z
AS-4R4-W AS-4R4-X AS-4R4-Y AS-4R4-Z
AS-4RR-W AS-4RR-X AS-4RR-Y AS-4RR-Z
歷時(shí)1min，無絕緣擊穿或閃絡(luò)現(xiàn)象。不同一組觸點(diǎn)之間應(yīng)能承受交流有效值2000V/50Hz的試驗(yàn)電壓，歷時(shí)1min，無絕緣擊穿或閃絡(luò)現(xiàn)象。絕緣電阻在標(biāo)準(zhǔn)試驗(yàn)大氣條件下，繼電器各導(dǎo)電部分對(duì)外露非帶電金屬部分及外殼之間，用開路電壓為500V的測(cè)試儀器測(cè)其絕緣值，應(yīng)不小于20MΩ。工作壽命：繼電器在規(guī)定的負(fù)荷下為80000次，平均無故障率時(shí)間為8萬(wàn)小時(shí)[1]。絲(fuse)也被稱為電流絲，IEC127標(biāo)準(zhǔn)將它定義為"熔斷體（fuse-link)"。其主要是起過載保護(hù)作用。電路中正確安置絲，絲就會(huì)在電流異常升高到一定的高度和熱度的時(shí)候，自身熔斷切斷電流，保護(hù)了電路運(yùn)行。[1]一百多年前由愛迪明的絲用于保護(hù)當(dāng)時(shí)昂貴的白熾燈。
任縣SANIL開關(guān)SP-30H,Φ1,Φ5,?Φ30,Non-sheild,2m
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