REXROTH SF-A3.0068.030-00.018
為了隔絕、改進輸入電流及減小諧波,如今悉數(shù)的中壓“直接變頻”器都不是實在的直接變頻,其輸入側(cè)都裝有輸入變壓器,這種配備短時刻內(nèi)不會改動。已然輸入側(cè)有變壓器,變頻器和電機的電壓就沒有必要和電網(wǎng)相同,非用十kV和6kV不行,功率2500kW以下電壓能夠不跨過3kV,因而就有了變頻器和電機的合理電壓等級疑問。
200kW~800kW以下的變頻調(diào)速宜選用380V或660V電壓等級。它線路簡略,技能老到,牢靠性高,dv/dt小,報價廉價。仍以560kW電機為例,630kW660V的低壓變頻器約35萬,而同容量6000V中壓變頻器約90萬。完畢的辦法有低-低,低-高,高-低和高-低-幾種辦法。因為電機,變壓器的報價遠(yuǎn)低于變頻器,即便替換電機、變壓器也合理。
REXROTH SF-A3.0068.030-00.018
Alcatel 1662SMC Shelf Rack Case
Alcatel DFAN6 R2.1 3AL98116AA FAN UNIT for 1662SMC
Fujitsu-Siemens ScenicView B22W-5 22 inch Wide TFT LCD
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Lot 50 Express Results Multi-Drug Screen Cup 10 Panel
Agilent 5180-4160 *2 5180-4121 5080-8750 1/8" Brass
Lot of MeltPro Parts MPS8000 MPS2700 NO9000-14 & more
Ferraz Shawmut Y075760 D2302GE20C400QF 2000V 400A FUSE
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Lot 25 Agilent G1531-60010 FID Signal Boards SOLD AS IS
Ferraz Shawmut PC123UC20C500TF X220659 2000V 500A FUSE
Lot 50 Agilent G1531-80610/C FID part
Lot 3 Ferraz Shawmut Z229723C NH00GG69V80-1 80A 690V
ALLEN BRADLEY 100-C12KF10 CONTACTOR 100C12KF10
MONSANTO PLC 124502F ALP/B0725 Board ADADC71JD
LIST-MAGNETIK Magnetic Fieldmeter MPU-ST Coating Thick
HAAS BRUSH ROTARY CONTROL F Board 32-3051F 93-1135
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Minebea Motor NMB-MAT 5915PC-12T-B30 115vAC FAN
IR ARO 666120-311-C DIAPHRAGM PUMP & 4 129121-400-B
Honeywell 51304672-150 Analog Output Spare forTDC 3000
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AMD Turion II Ultra M600 TMM600DB023GQ 2.4G/2M CPU
Agilent Brass 5080-8750 5180-4121 5180-4160 8710-1709
Lot 13 pcs QLOGIC ISP2322 chips PN: 2405448 $12/pc
LINCOLN 82050 Grease Pump automotive service equipment
keofitt M4 Valve Body type T 400001 in Box
HP COMPAQ 416039-001 405963-001 NC6200 NC6300 KEYBOARD
SAMSUNG A-PRO Power Supply APP-1373V
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SIMATIC BOX PC 820 6ES7647-3DC00-0DX0 USED
Cisco Unified Communications Manager CM6.1U4-K9-UPG=
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Turck BANNER IM35-11EX-HI/24VDC Analog Data Transmitter
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