鹽城市批發(fā)shinhwa繼電器SAS-4340A,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DST-D-3X DST-D-3Y DST-D-4X DST-D-4Y DST-D-5X DST-D-5Y
DST-I-3X DST-I-3Y DST-I-4X DST-I-4Y DST-I-5X DST-I-5Y
DST-R-3X DST-R-3Y DST-R-4X DST-R-4Y DST-T-4X DST-T-4Y
DST-R-5X DST-R-5Y DST-T-3X DST-T-3Y DST-T-4X DST-T-4Y
DST-T-5X DST-T-5Y DST-P-3X DST-P-3Y DST-P-4X DST-P-4Y
DST-P-5X DST-P-5Y DST-O-3X DST-O-3Y DST-O-4X DST-O-4Y
DST-O-5X DST-O-5Y DSTM-D-VX DSTM-D-VY DSTM-D-IX DSTM-D-IY
DSTM-D-OX DSTM-D-OY DSTM-I-VX DSTM-I-VY DSTM-I-IX DSTM-I-IY
DSTM-I-OX DSTM-I-OY DSTM-A-VX DSTM-A-VY DSTM-A-IX DSTM-A-IY
DSTM-A-OX DSTM-A-OY DSTM-R-VX DSTM-R-VY DSTM-R-IX DSTM-R-IY
DSTM-R-OX DSTM-R-OY DSTM-P-VX DSTM-P-VY DSTM-P-IX DSTM-P-IY
DSTM-P-OX DSTM-P-OY DSTM-O-VX DSTM-O-VY DSTM-O-IX DSTM-O-IY
DSTM-O-OX DSTM-O-OY
FFC-4AA-W FFC-4AA-X FFC-4AA-Z FFC-4AA-Y
FFC-4AB-W FFC-4AB-X FFC-4AB-Z FFC-4AB-Y
FFC-4AC-W FFC-4AC-X FFC-4AC-Z FFC-4AC-Y
FFC-4AD-W FFC-4AD-X FFC-4AD-Z FFC-4AD-Y
FFC-4AR-W FFC-4AR-X FFC-4AR-Z FFC-4AR-Y
FFC-4AN-W FFC-4AN-X FFC-4AN-Z FFC-4AN-Y
FFC-4BA-W FFC-4BA-X FFC-4BA-Z FFC-4BA-Y
FFC-4BB-W FFC-4BB-X FFC-4BB-Z FFC-4BB-Y
FFC-4BC-W FFC-4BC-X FFC-4BC-Z FFC-4BC-Y
FFC-4BD-W FFC-4BD-X FFC-4BD-Z FFC-4BD-Y
俗稱耐壓。常用可控硅的VRRM/VDRM一般為幾百伏到一千伏。⒊控制極觸發(fā)電流（IGT），俗稱觸發(fā)電流。常用可控硅的IGT一般為幾微安到幾十毫安。在規(guī)定環(huán)境溫度和散熱條件下，允許通過陰極和陽(yáng)極的電流平均值。封裝形式編輯常用可控硅的封裝形式有TO-TO-TO-202AB、TO-TO-220ABC、TO-3P、SOT-TO-TO-SOT-SOT23-3L等用途編輯普通晶閘管基本的用途就是可控整流。大家熟悉的二極管整流電路屬于不可控整流電路。如果把二極管換成晶閘管，就可以構(gòu)成可控整流電路。以簡(jiǎn)單的單相半波可控整流電路為例，在正弦交流電壓U2的正半周期間。
鹽城市批發(fā)shinhwa繼電器SAS-4340A,
FFC-4BR-W FFC-4BR-X FFC-4BR-Z FFC-4BR-Y
FFC-4BN-W FFC-4BN-X FFC-4BN-Z FFC-4BN-Y
FFC-4CA-W FFC-4CA-X FFC-4CA-Z FFC-4CA-Y
FFC-4CB-W FFC-4CB-X FFC-4CB-Z FFC-4CB-Y
FFC-4CC-W FFC-4CC-X FFC-4CC-Z FFC-4CC-Y
FFC-4CD-W FFC-4CD-X FFC-4CD-Z FFC-4CD-Y
FFC-4CR-W FFC-4CR-X FFC-4CR-Z FFC-4CR-Y
FFC-4CN-W FFC-4CN-X FFC-4CN-Z FFC-4CN-Y
FFC-4DA-W FFC-4DA-X FFC-4DA-Z FFC-4DA-Y
FFC-4DB-W FFC-4DB-X FFC-4DB-Z FFC-4DB-Y
FFC-4DC-W FFC-4DC-X FFC-4DC-Z FFC-4DC-Y
FFC-4DD-W FFC-4DD-X FFC-4DD-Z FFC-4DD-Y
FFC-4DR-W FFC-4DR-X FFC-4DR-Z FFC-4DR-Y
FFC-4DN-W FFC-4DN-X FFC-4DN-Z FFC-4DN-Y
FFC-4RA-W FFC-4RA-X FFC-4RA-Z FFC-4RA-Y
FFC-4RB-W FFC-4RB-X FFC-4RB-Z FFC-4RB-Y
FFC-4RC-W FFC-4RC-X FFC-4RC-Z FFC-4RC-Y
FFC-4RD-W FFC-4RD-X FFC-4RD-Z FFC-4RD-Y
FFC-4RR-W FFC-4RR-X FFC-4RR-Z FFC-4RR-Y
FFC-4RN-W FFC-4RN-X FFC-4RN-Z FFC-4RN-Y
FFC-9AA-W FFC-9AA-X FFC-9AA-Z FFC-9AA-Y
送入運(yùn)算回路，根據(jù)指令和運(yùn)算可使電動(dòng)機(jī)按指令速度運(yùn)轉(zhuǎn)。（5）保護(hù)電路：檢測(cè)主電路的電壓、電流等，當(dāng)發(fā)生過載或過電壓等異常時(shí)，為了防止逆變器和異步電動(dòng)機(jī)損壞。功能作用變頻節(jié)能變頻器節(jié)能主要表現(xiàn)在風(fēng)機(jī)、水泵的應(yīng)用上。風(fēng)機(jī)、泵類負(fù)載采用變頻調(diào)速后，節(jié)電率為20%～60%，這是因?yàn)轱L(fēng)機(jī)、泵類負(fù)載的實(shí)際消耗功率基本與轉(zhuǎn)速的三次方成比例。當(dāng)用戶需要的平均流量較小時(shí)，風(fēng)機(jī)、泵類采用變頻調(diào)速使其轉(zhuǎn)速降低，節(jié)能效果非常明顯。而傳統(tǒng)的風(fēng)機(jī)、泵類采用擋板和閥門進(jìn)行流量調(diào)節(jié)，電動(dòng)機(jī)轉(zhuǎn)速基本不變，耗電功率變化不大。據(jù)統(tǒng)計(jì)，風(fēng)機(jī)、泵類電動(dòng)機(jī)用電量占全國(guó)用電量的31%，占工業(yè)用電量的50%。在此類負(fù)載上使用變頻調(diào)速裝置具有非常重要的意義。
鹽城市批發(fā)shinhwa繼電器SAS-4340A,
FFC-9AB-W FFC-9AB-X FFC-9AB-Z FFC-9AB-Y
FFC-9AC-W FFC-9AC-X FFC-9AC-Z FFC-9AC-Y
FFC-9AD-W FFC-9AD-X FFC-9AD-Z FFC-9AD-Y
FFC-9AR-W FFC-9AR-X FFC-9AR-Z FFC-9AR-Y
FFC-9AN-W FFC-9AN-X FFC-9AN-Z FFC-9AN-Y
FFC-9BA-W FFC-9BA-X FFC-9BA-Z FFC-9BA-Y
FFC-9BB-W FFC-9BB-X FFC-9BB-Z FFC-9BB-Y
FFC-9BC-W FFC-9BC-X FFC-9BC-Z FFC-9BC-Y
FFC-9BD-W FFC-9BD-X FFC-9BD-Z FFC-9BD-Y
FFC-9BR-W FFC-9BR-X FFC-9BR-Z FFC-9BR-Y
FFC-9BN-W FFC-9BN-X FFC-9BN-Z FFC-9BN-Y
FFC-9CA-W FFC-9CA-X FFC-9CA-Z FFC-9CA-Y
FFC-9CB-W FFC-9CB-X FFC-9CB-Z FFC-9CB-Y
FFC-9CC-W FFC-9CC-X FFC-9CC-Z FFC-9CC-Y
FFC-9CD-W FFC-9CD-X FFC-9CD-Z FFC-9CD-Y
FFC-9CR-W FFC-9CR-X FFC-9CR-Z FFC-9CR-Y
FFC-9CN-W FFC-9CN-X FFC-9CN-Z FFC-9CN-Y
FFC-9DA-W FFC-9DA-X FFC-9DA-Z FFC-9DA-Y
FFC-9DB-W FFC-9DB-X FFC-9DB-Z FFC-9DB-Y
FFC-9DC-W FFC-9DC-X FFC-9DC-Z FFC-9DC-Y
FFC-9DD-W FFC-9DD-X FFC-9DD-Z FFC-9DD-Y
FFC-9DR-W FFC-9DR-X FFC-9DR-Z FFC-9DR-Y
FFC-9DN-W FFC-9DN-X FFC-9DN-Z FFC-9DN-Y
FFC-9RA-W FFC-9RA-X FFC-9RA-Z FFC-9RA-Y
FFC-9RB-W FFC-9RB-X FFC-9RB-Z FFC-9RB-Y
FFC-9RC-W FFC-9RC-X FFC-9RC-Z FFC-9RC-Y
FFC-9RD-W FFC-9RD-X FFC-9RD-Z FFC-9RD-Y
FFC-9RR-W FFC-9RR-X FFC-9RR-Z FFC-9RR-Y
FFC-9RN-W FFC-9RN-X FFC-9RN-Z FFC-9RN-Y
S-CON100 S-CON200 S-CON300
IPD-2A1-W IPD-2A1-X IPD-2A1-Y IPD-2A1-Z
IPD-2A2-W IPD-2A2-X IPD-2A2-Y IPD-2A2-Z
IPD-2A3-W IPD-2A3-X IPD-2A3-Y IPD-2A3-Z
IPD-2A4-W IPD-2A4-X IPD-2A4-Y IPD-2A4-Z
IPD-2A5-W IPD-2A5-X IPD-2A5-Y IPD-2A5-Z
IPD-2A6-W IPD-2A6-X IPD-2A6-Y IPD-2A6-Z
IPD-2A7-W IPD-2A7-X IPD-2A7-Y IPD-2A7-Z
IPD-2A8-W IPD-2A8-X IPD-2A8-Y IPD-2A8-Z
IPD-2AR-W IPD-2AR-X IPD-2AR-Y IPD-2AR-Z
IPD-2AN-W IPD-2AN-X IPD-2AN-Y IPD-2AN-Z
IPD-2R1-W IPD-2R1-X IPD-2R1-Y IPD-2R1-Z
IPD-2R2-W IPD-2R2-X IPD-2R2-Y IPD-2R2-Z
IPD-2R3-W IPD-2R3-X IPD-2R3-Y IPD-2R3-Z
IPD-2R4-W IPD-2R4-X IPD-2R4-Y IPD-2R4-Z
IPD-2R5-W IPD-2R5-X IPD-2R5-Y IPD-2R5-Z
IPD-2R6-W IPD-2R6-X IPD-2R6-Y IPD-2R6-Z
IPD-2R7-W IPD-2R7-X IPD-2R7-Y IPD-2R7-Z
IPD-2R8-W IPD-2R8-X IPD-2R8-Y IPD-2R8-Z
IPD-2RR-W IPD-2RR-X IPD-2RR-Y IPD-2RR-Z
IPD-2RN-W IPD-2RN-X IPD-2RN-Y IPD-2RN-Z
IPD-4A1-W IPD-4A1-X IPD-4A1-Y IPD-4A1-Z
工作電流為集電極電流I。至今，IGBT的擊穿電壓也已做到1200V，集電極飽和電流已超過1500A，由IGBT作為逆變器件的變頻器容量已達(dá)到250KVA以上。此外，其工作頻率可達(dá)20KHZ。由IGBT作為逆變器件的變頻器的載波頻率一般都在10KHZ以上，故電動(dòng)機(jī)的電源波形比較平滑，基本無電磁噪聲。在變頻器工作時(shí)，流過變頻器的電流是很大的,變頻器產(chǎn)生的熱量也是非常大的，不能忽視其發(fā)熱所產(chǎn)生的影響通常，變頻器安裝在控制柜中。我們要了解一臺(tái)變頻器的發(fā)熱量大概是多少.可以用以下公式估算:發(fā)熱量的近似值=變頻器容量（KW）×55[W]在這里,如果變頻器容量是以恒轉(zhuǎn)矩負(fù)載為準(zhǔn)的(過流能力150%*60s)如果變頻器帶有直流電抗器或交流電抗器,并且也在柜子里面,這時(shí)發(fā)熱量會(huì)更大一些。
鹽城市批發(fā)shinhwa繼電器SAS-4340A,
IPD-4A2-W IPD-4A2-X IPD-4A2-Y IPD-4A2-Z
IPD-4A3-W IPD-4A3-X IPD-4A3-Y IPD-4A3-Z
IPD-4A4-W IPD-4A4-X IPD-4A4-Y IPD-4A4-Z
IPD-4A5-W IPD-4A5-X IPD-4A5-Y IPD-4A5-Z
IPD-4A6-W IPD-4A6-X IPD-4A6-Y IPD-4A6-Z
IPD-4A7-W IPD-4A7-X IPD-4A7-Y IPD-4A7-Z
IPD-4A8-W IPD-4A8-X IPD-4A8-Y IPD-4A8-Z
IPD-4AR-W IPD-4AR-X IPD-4AR-Y IPD-4AR-Z
IPD-4AN-W IPD-4AN-X IPD-4AN-Y IPD-4AN-Z
IPD-4R1-W IPD-4R1-X IPD-4R1-Y IPD-4R1-Z
IPD-4R2-W IPD-4R2-X IPD-4R2-Y IPD-4R2-Z
IPD-4R3-W IPD-4R3-X IPD-4R3-Y IPD-4R3-Z
IPD-4R4-W IPD-4R4-X IPD-4R4-Y IPD-4R4-Z
IPD-4R5-W IPD-4R5-X IPD-4R5-Y IPD-4R5-Z
IPD-4R6-W IPD-4R6-X IPD-4R6-Y IPD-4R6-Z
IPD-4R7-W IPD-4R7-X IPD-4R7-Y IPD-4R7-Z
IPD-4R8-W IPD-4R8-X IPD-4R8-Y IPD-4R8-Z
IPD-4RR-W IPD-4RR-X IPD-4RR-Y IPD-4RR-Z
IPD-4RN-W IPD-4RN-X IPD-4RN-Y IPD-4RN-Z
IPD-7A1-W IPD-7A1-X IPD-7A1-Y IPD-7A1-Z
IPD-7A2-W IPD-7A2-X IPD-7A2-Y IPD-7A2-Z
IPD-7A3-W IPD-7A3-X IPD-7A3-Y IPD-7A3-Z
IPD-7A4-W IPD-7A4-X IPD-7A4-Y IPD-7A4-Z
IPD-7A5-W IPD-7A5-X IPD-7A5-Y IPD-7A5-Z
IPD-7A6-W IPD-7A6-X IPD-7A6-Y IPD-7A6-Z
IPD-7A7-W IPD-7A7-X IPD-7A7-Y IPD-7A7-Z
IPD-7A8-W IPD-7A8-X IPD-7A8-Y IPD-7A8-Z
IPD-7AR-W IPD-7AR-X IPD-7AR-Y IPD-7AR-Z
IPD-7AN-W IPD-7AN-X IPD-7AN-Y IPD-7AN-Z
IPD-7R1-W IPD-7R1-X IPD-7R1-Y IPD-7R1-Z
IPD-7R2-W IPD-7R2-X IPD-7R2-Y IPD-7R2-Z
IPD-7R3-W IPD-7R3-X IPD-7R3-Y IPD-7R3-Z
IPD-7R4-W IPD-7R4-X IPD-7R4-Y IPD-7R4-Z
IPD-7R5-W IPD-7R5-X IPD-7R5-Y IPD-7R5-Z
IPD-7R6-W IPD-7R6-X IPD-7R6-Y IPD-7R6-Z
IPD-7R7-W IPD-7R7-X IPD-7R7-Y IPD-7R7-Z
IPD-7R8-W IPD-7R8-X IPD-7R8-Y IPD-7R8-Z
IPD-7RR-W IPD-7RR-X IPD-7RR-Y IPD-7RR-Z
IPD-7RN-W IPD-7RN-X IPD-7RN-Y IPD-7RN-Z
IPD-9A1-W IPD-9A1-X IPD-9A1-Y IPD-9A1-Z
IPD-9A2-W IPD-9A2-X IPD-9A2-Y IPD-9A2-Z
IPD-9A3-W IPD-9A3-X IPD-9A3-Y IPD-9A3-Z
IPD-9A4-W IPD-9A4-X IPD-9A4-Y IPD-9A4-Z
IPD-9A5-W IPD-9A5-X IPD-9A5-Y IPD-9A5-Z
等效成兩相靜止坐標(biāo)系下的交流電流Ia1Ib1，再通過按轉(zhuǎn)子磁場(chǎng)定向旋轉(zhuǎn)變換，等效成同步旋轉(zhuǎn)坐標(biāo)系下的直流電流ImIt1(Im1相當(dāng)于直流電動(dòng)機(jī)的勵(lì)磁電流；It1相當(dāng)于與轉(zhuǎn)矩成正比的電樞電流)，然后模仿直流電動(dòng)機(jī)的控制方法，求得直流電動(dòng)機(jī)的控制量，經(jīng)過相應(yīng)的坐標(biāo)反變換，實(shí)現(xiàn)對(duì)異步電動(dòng)機(jī)的控制。其實(shí)質(zhì)是將交流電動(dòng)機(jī)等效為直流電動(dòng)機(jī)，分別對(duì)速度，磁場(chǎng)兩個(gè)分量進(jìn)行獨(dú)立控制。通過控制轉(zhuǎn)子磁鏈，然后分解定子電流而獲得轉(zhuǎn)矩和磁場(chǎng)兩個(gè)分量，經(jīng)坐標(biāo)變換，實(shí)現(xiàn)正交或解耦控制。矢量控制方法的提出具有劃時(shí)代的意義。然而在實(shí)際應(yīng)用中，由于轉(zhuǎn)子磁鏈難以準(zhǔn)確觀測(cè)，系統(tǒng)特性受電動(dòng)機(jī)參數(shù)的影響較大，且在等效直流電動(dòng)機(jī)控制過程中所用矢量旋轉(zhuǎn)變換較復(fù)雜。
鹽城市批發(fā)shinhwa繼電器SAS-4340A,
IPD-9A6-W IPD-9A6-X IPD-9A6-Y IPD-9A6-Z
IPD-9A7-W IPD-9A7-X IPD-9A7-Y IPD-9A7-Z
IPD-9A8-W IPD-9A8-X IPD-9A8-Y IPD-9A8-Z
IPD-9AR-W IPD-9AR-X IPD-9AR-Y IPD-9AR-Z
IPD-9AN-W IPD-9AN-X IPD-9AN-Y IPD-9AN-Z
IPD-9R1-W IPD-9R1-X IPD-9R1-Y IPD-9R1-Z
IPD-9R2-W IPD-9R2-X IPD-9R2-Y IPD-9R2-Z
IPD-9R3-W IPD-9R3-X IPD-9R3-Y IPD-9R3-Z
IPD-9R4-W IPD-9R4-X IPD-9R4-Y IPD-9R4-Z
IPD-9R5-W IPD-9R5-X IPD-9R5-Y IPD-9R5-Z
IPD-9R6-W IPD-9R6-X IPD-9R6-Y IPD-9R6-Z
IPD-9R7-W IPD-9R7-X IPD-9R7-Y IPD-9R7-Z
IPD-9R8-W IPD-9R8-X IPD-9R8-Y IPD-9R8-Z
IPD-9RR-W IPD-9RR-X IPD-9RR-Y IPD-9RR-Z
IPD-9RN-W IPD-9RN-X IPD-9RN-Y IPD-9RN-Z
IR-V100-W IR-V100-X IR-V100-Y IR-V100-Z
IR-V135-W IR-V135-X IR-V135-Y IR-V135-Z
IR-V500-W IR-V500-X IR-V500-Y IR-V500-Z
IR-V1K-W IR-V1K-X IR-V1K-Y IR-V1K-Z
IR-V5K-W IR-V5K-X IR-V5K-Y IR-V5K-Z
IR-V10K-W IR-V10K-X IR-V10K-Y IR-V10K-Z
IR-V100K-W IR-V100K-X IR-V100K-Y IR-V100K-Z
IR-I100-W IR-I100-X IR-I100-Y IR-I100-Z
IR-I135-W IR-I135-X IR-I135-Y IR-I135-Z
IR-I500-W IR-I500-X IR-I500-Y IR-I500-Z
IR-I1K-W IR-I1K-X IR-I1K-Y IR-I1K-Z
IR-I5K-W IR-I5K-X IR-I5K-Y IR-I5K-Z
IR-I10K-W IR-I10K-X IR-I10K-Y IR-I10K-Z
IR-I100K-W IR-I100K-X IR-I100K-Y IR-I100K-
IR-R100-W IR-R100-X IR-R100-Y IR-R100-Z
IR-R135-W IR-R135-X IR-R135-Y IR-R135-Z
IR-R500-W IR-R500-X IR-R500-Y IR-R500-Z
IR-R1K-W IR-R1K-X IR-R1K-Y IR-R1K-Z
IR-R5K-W IR-R5K-X IR-R5K-Y IR-R5K-Z
IR-R10K-W IR-R10K-X IR-R10K-Y IR-R10K-Z
IR-R100K-W IR-R100K-X IR-R100K-Y IR-R100K-Z
IR-P100-W IR-P100-X IR-P100-Y IR-P100-Z
IR-P135-W IR-P135-X IR-P135-Y IR-P135-Z
IR-P500-W IR-P500-X IR-P500-Y IR-P500-Z
IR-P1K-W IR-P1K-X IR-P1K-Y IR-P1K-Z
IR-P5K-W IR-P5K-X IR-P5K-Y IR-P5K-Z
IR-P10K-W IR-P10K-X IR-P10K-Y IR-P10K-Z
IR-P100K-W IR-P100K-X IR-P100K-Y IR-P100K-Z
IR-O100-W IR-O100-X IR-O100-Y IR-O100-Z
IR-O135-W IR-O135-X IR-O135-Y IR-O135-Z
IR-O500-W IR-O500-X IR-O500-Y IR-O500-Z
IR-O1K-W IR-O1K-X IR-O1K-Y IR-O1K-Z
IR-O5K-W IR-O5K-X IR-O5K-Y IR-O5K-Z
IR-O10K-W IR-O10K-X IR-O10K-Y IR-O10K-Z
IR-O100K-W IR-O100K-X IR-O100K-Y IR-O100K-Z
設(shè)計(jì)時(shí)應(yīng)根據(jù)具體情況通過編程來選擇保護(hù)功能或使某些保護(hù)功能失效！兜蛪号潆娫O(shè)計(jì)規(guī)范》GB50054-95第4.3.5條規(guī)定：“突然斷電比過負(fù)載造成的損失更大的線路，其過負(fù)載保護(hù)應(yīng)作用于信號(hào)而不應(yīng)作用于切斷電路！痹谇懊嫣岬降南辣每刂葡到y(tǒng)中，由于消防泵是消防應(yīng)急負(fù)荷，它是在消防救火的緊要關(guān)頭工作的。當(dāng)火災(zāi)發(fā)生時(shí)，重要的問題是消防泵能地運(yùn)轉(zhuǎn)打水到消防管網(wǎng)中，而對(duì)消防泵電機(jī)的保護(hù)就不是重要問題。所以上面提到的某些保護(hù)功能可以通過編程使它失效，或者使保護(hù)動(dòng)作于信號(hào)而不是作于使消防泵電機(jī)停機(jī)。前面提到的過載保護(hù)功能也只應(yīng)動(dòng)作于信號(hào)。2）支路保護(hù)由于軟起動(dòng)器本身沒有短路保護(hù)，為保護(hù)其中的晶閘管，應(yīng)該采用快速熔斷器（自動(dòng)空氣開關(guān)的開斷時(shí)間較長(zhǎng)。
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