H-4030-P-H04AA電機
H-4030-P-H04AA電機
H-4030-P-H04AA電機
大型或特大型化工企業一般具有生產聯係緊密、物料平衡難度大、工藝流程復雜、公用工程聯係緊密、生產過程高溫高壓、物料有毒有害、易燃易爆、設備單機價值高、恢復開車時間長等特點。由於供電量大且集中，這類企業往往在企業內部形成相對獨立的6一35kV企業配電網，其供配電係統具有供配電網絡係統復雜、電力負荷密度大、供電可靠性要求高、在用電氣設備狀態水平參差不齊、使用環境由於污染腐蝕而較為惡劣、供配電線路以電力電纜為主等特點。
隨著企業的不斷發展，電網規模相應擴大，電網結構也日趨復雜，由於上述特點的存在，化工企業的供配電係統遭受雷擊、設備事故、操作事故和故障等因素發生的機率也相應增加，這些每次故障和事故都給企業供配電係統帶來的影響和衝擊。
除了直接造成停電事故外，更多的表現為對供電係統電能質量的影響，主要體現在電壓波動等。每次的電網衝擊和電壓波動，都會對化工生產裝置造成很大的影響，引起許多重要電機停機，導致生產過程紊亂，使生產裝置停車。企業電網經過四十多年的發展，已成為一個由發電、變電、輸電、配電和用電等設備和相應的輔助係統，按規定的技術、經濟要求組成的一個內部電力網。
變頻器（Variable-frequency Drive，VFD）是應用變頻技術與微電子技術，通過改變電機工作電源頻率方式來控制交流電動機的電力控制設備。開關電源電路提供變頻器的整機控制用電，是變頻器正常工作的先決條件。維修變頻器，就得先搞明白開關電源電路。
變頻器應用的開關電源電路，為直一交一直型的逆變電路，是一種電壓和功率的變換器，將直流電壓和功率轉換為脈衝電壓，再整流成為另一種直流電壓。輸人、輸出電壓由開關變壓器相隔離，開關變壓器起到功率傳遞、電壓/電流變換的作用。開關變壓器為降壓變壓器。開關電源的特點如下：
1）開關電源的振蕩和調壓方式是利用改變脈衝寬度或周期來調整輸出電壓的，稱為時間比例控制，又分為PWM（調寬）和PFM（調頻）兩種控制方式。
2）從電路的能量轉換特性看，可分為正激和反激兩種工作方式。開關管飽和導通時， 二次繞組連接的整流器受反偏壓而截止，開關變壓器的一次繞組流入電流而儲能〈電磁轉換）。開關管截止時，二次繞組經負載電路釋放電能（磁電轉換）。正激方式則與此相反， 實際應用不多。
3）從開關變壓器的一次電路結構來看，有分立元件構成的和集成振蕩芯片構成的兩種電路形式。因而從振蕩信號的來源看，又分為自激（分立零件）和他激式（IC電路）開關電源。兩種電路結構都有應用。
4）開關管有採用雙極型器件和採用場效應晶體管的。
5）小功率變頻器採用單端正激式電路，大、中功率變頻器常採用雙端正激式電路。一般變頻器的開關電源，常提供以下幾種電壓輸出：CPU及附屬電路、控制電路、操作顯示面板的+5V供電；電流、電壓、溫度等故障檢測電路、控制電路的±15V供電；控制端子、工作繼電器線圈的24V供電。四路相互隔離的約為22V的驅動電路的供電，該四路供電往往又經穩壓電路處理成+15V、 -7.5V的正、負電源供驅動電路，為IGBT逆變輸出電路提供激勵電流。
任何電子設備，電源電路的故障率總是相當高的一因其要提供整機的電源供應，負擔重。變頻器的開關電源電路，形式上比較單一，結構上也比較簡單。但是簡單電路也可能會產生疑難故障。開關電源的檢修不像線性電源那麼直觀，電路的任一個小環節一振蕩、穩壓、保護、負載等出現異常，都會使電路出現各種各樣的故障現象。
通上電後無反應，操作顯示面板無顯示，變頻器好像沒通電一樣。測量控制端子的控制電壓和10V頻率調整電壓都為0，測量變頻器主接線端子電阻正常，那麼大致上可以斷定問題是出在開關電源電路了。
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漳州鼎晟達自動化設備有限公司
聯係人：藍經理（銷售經理）
手機 ：18150695049
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【主營產品】
1：Invensys Foxboro（福克斯波羅）：I/A Series係統，FBM（現場輸入/輸出模塊）順序控制、梯形邏輯控制、事故追憶處理、數模轉換、輸入/輸出信號處理、數據通信及處理等。
2：Invensys Triconex: 冗餘容錯控制係統、基於三重模件冗餘（TMR）結構的現代化的容錯控制器。
3：Westinghouse（西屋）： OVATION係統、WDPF係統、WEStation係統備件。
4：Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、
MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、
Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
5：Schneider Modicon（施耐德莫迪康）：Quantum 140係列處理器、控制卡、電源模塊等。
6：ABB：工業機器人備件DSQC係列、Bailey INFI 90等。
7：Siemens(西門子)：Siemens MOORE， Siemens Simatic C1，Siemens數控係統等。
8：Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等係列。
9：XYCOM：I/O 、VME板和處理器等。
10：GE FANUC(GE發那科)：模塊、卡件、驅動器等各類備件。
11：Yaskawa（安川）：伺服控制器、伺服馬達、伺服驅動器。
12：Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅動模塊等。
13：Woodward（伍德沃德）：SPC閥位控制器、PEAK150數字控制器。
14:工業機器人係統備件。
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Bently Nevada I/O Module PN: 125800-01
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Bently Nevada 3300 Series 4 Slot Rack/Chassis
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Bently Nevada Velocity Seismoprobe 500mV/IN/SEC 16699-02-05-03
GENELECTR BENTLY NEVADA 330231-10-02-05 RQAUS1
1 NEW BENTLY NEVADA 128718-01 12871801 2 CH CHANNEL TERMINATION BLOCK
GENELECTR BENTLY NEVADA 23211-01-01-02 RQAUS1
Bently Nevada 164823 English Manual on CD 02-FEB-2007 Rev AG NEW SEALED
Bently Nevada 140471-02 Dynamic Pressure I/O Module 3500 PLC 14047102 3500/42M
Bently Nevada 126632-01 TMR Prox/Seismic I/O Module 3500 PLC 12663201 3500/42M
Bently Nevada 3300/10 Power Supply Module PLC PS 3300/10-01-01-00-00 Bentley
NEW BENTLY NEVADA Bentley 330930-065-02-00
^BENTLY NEVADA THERMOCOUPLE MODULE 82367
GENELECTR BENTLY NEVADA 30000-00-18-36-02 RQAUS1
bently nevada 3300xl 330103-00-20-05-02-05
GENELECTR BENTLY NEVADA PWA-40340-01J RQAUS1
GENELECTR BENTLY NEVADA TD15A-300 RQAUS1
NEW BENTLY NEVADA 330930-060-00-00 3300 XL NSV 6M EXTENSION CABLE D537637
BENTLY NEVADA 330100-90-00 PROXIMITOR SENSOR 3300 5 MM & 6 MM 24V-DC D526691
NEW BENTLY NEVADA 3300 XL 8MM 330104-00-15-10-02-05 PROXIMITY SENSOR
GENELECTR BENTLY NEVADA 31000-00-00-00-043-01-02 RQAUS1
GENELECTR BENTLY NEVADA PWA46190-01 RQAUS1
Bently Nevada XDCR I/O & Record Terminals 81546-01 8154601 79748-01H 79748 01 H
Bently Nevada XDUCR I/O & Record Terminal 81544-01 8154401 78462-02E 78462 02 E
BENTLY NEVADA DVTP-R 72351-03-04-01-01-01-01 CIRCUIT BOARD Free Shipping J
BENTLY NEVADA PULL-OUT ASSY 43217-02
BENTLY NEVADA 23211-01-03-07 PCB CIRCUIT BOARD D553219
NEW BENTLY NEVADA 128718-01 3500/25 KEYPHASOR EXTERNAL TERMINATION BLOCK D553482
Bently Nevada 3300/16 XY/GAP Dual Vibration Monitor Module 3300/16-03-01-00-00
Bently Nevada 7200 Series Proximitor Cable 24710-080-01
Bently Nevada XDCR I/O & Record Terminals 82920-01 ASSY78462-01 PLC 78599-06
Bently Nevada Recorder Outputs/Alarm Relay Output 78599 78462 82365 PLC Bentley
Bently Nevada XDCR I/O & Record Terminals/Alarm Relay Outputs 78599 78462 81545
Bently Nevada XDCR I/O & Record Terminals 79669 78462 84137 PLC Bentley 3300
Bently Nevada XDUCR I/O & Record Terminals 79669 78462 81544 PLC Bentley 3300
REFURBISHED BENTLY NEVADA 72851-01-04-01-01 CONTROL BOARD W/PWA DAUGHTER BOARD
Messger?t ECS electronic TK-10 Bently Nevada Corp Model Nr. 5236-01
BENTLY NEVADA 78432-02 DISTRIBUTION PCB MODULE 110V-AC REV V D545660
Bently Nevada DSMB 179 CNA 10.U12.101.3 Memory Board
GENELECTR BENTLY NEVADA 87006-01 RQANS2
GENELECTR BENTLY NEVADA 12276B-02 RQAUS1
Bently Nevada 125720-01 RELAY MODULE 4CHANNEL -
Bently Nevada 3300 Series Signal Relay Board 81545-01
Bently Nevada 3300 Series Signal Relay Board 82926-01
Bently Nevada 3300 Series Signal Relay Board 84157-01
Bently Nevada 3300 Series Signal Relay Board 88501-01
Bently Nevada 3300 Series Signal Relay Board 84142-01
BENTLY NEVADA MARU418723 **NNB**
Bently Nevada 3300/20-01-01-00-01-00 Dual Thrust Monitor
BENTLY NEVADA 90038-F 9000 EXTENDER CARD 90039-01
BENTLY NEVADA ASSY79748-01 RECORD TERMINAL
GENELECTR BENTLY NEVADA PWA-40332-01L RQAUS1
BENTLY NEVADA PWA78452-01 3300/01 SYSTEM MONITOR REV B D545517
BENTLY NEVADA, 990-05-XX-01-05, CUSTOM 2 WIRE VIBRATION TRANSMITTER (NIB)
BENTLY NEVADA 990-05-XX-01-05 CUSTOM 2 WIRE VIBRATION TRANSMITTER (NIB)
Bently Nevada 4 Channel Relay Module PN: 125720-01
NEW BENTLY NEVADA PWA 125808-05B 3500/50 TACHOMETER ET BLOCK D554698
Bently Nevada 78462 82365-01 Recorder Outputs/Alarm Relay Output 78599-05 Input
BENTLY NEVADA 90038-1E EXTENDER CARD PLC CIRCUIT BOARD MODULE
BENTLY NEVADA CA18745-03 -55-100C 5MM PROXIMITY 7200 18-24V-DC SENSOR B413016
Bently Nevada Xducer I/O & Record Terminals 84157-01 ASSY 78462-02 PLC 88098-09E
Bently Nevada I/O MODULE SIGNAL & RECORD TERMINAL 81544-01
Bently Nevada 3300/12-01-20-00 Power Supply
BENTLY NEVADA 82832-000-130-018-02 PROBE SENSOR *NEW NO BOX*
Bently Nevada PWB 90039-01, PWB9003901, SHIPSAMEDAY#1225R
Bently Nevada 84137-01 XDCR I/O & Record Terminals 79669 78462 PLC Bentley 3300
Bently Nevada 21504-00-20-10-02 Vibration Sensor Probe PLC Proximity 7200 Cable
Bently Nevada 21747-085-00 Vibration Sensor Probe PLC Proximity 7200 2174708500
Bently Nevada XDCR I/O & Record Terminals 81546-01 Alarm Relay Outputs 79748-01
GE Bently Nevada Trendmaster 2000 Transducer Interface Module
Wilcoxon Research 787A WR Acelerometer 100mV/g(nom) 787 A PLC Module
Wilcoxon Research 787A WR Acelerometer 100mV/g(nom) 787 A PLC Module
BENTLY NEVADA 82368-01 THERMOCOUPLE 3 WIRE RTD INPUT MODULE CARD
REFURBISHED BENTLY NEVADA 72311-011-04-01-01-01 CONTROL BOARD W/PWA DAUGHTER
NEW BENTLY NEVADA 200125-01-06 K-TYPE THERMOCOUPLE SENSOR CABLE ASSEMBLY D529270
NEW BENTLY NEVADA 200125-01-15 K-TYPE THERMOCOUPLE SENSOR CABLE ASSEMBLY D529268
BENTLY NEVADA PWA44521-01 E EXTERNAL KEY PCB CIRCUIT BOARD MODULE D526235
BENTLY NEVADA PWA44521-01 E EXTERNAL TRANSDUCER PCB CIRCUIT BOARD MODULE D526234
BENTLY NEVADA PWA44539-01 A VELOCITY 500 MV/IN/SEC CIRCUIT BOARD MODULE D526227
BENTLY NEVADA PWA44521-01 F EXTERNAL TRANSDUCER PCB CIRCUIT BOARD MODULE D526228
BENTLY NEVADA PWA44521-01 F EXTERNAL KEY PCB CIRCUIT BOARD MODULE D526224
BENTLY NEVADA PWA44533-01 OPTICAL KEY PCB CIRCUIT BOARD MODULE D526222
BENTLY NEVADA 3115 2800 PROXIMITOR ((CF-3660))
Bently Nevada 7200 TP-R Thrust Monitor 72300-01-04-02-03-01-01
GENELECTR BENTLY NEVADA 90339-01 RQAUS1
GENELECTR BENTLY NEVADA 19000-00-50-12-02 RQAUS1
Bently Nevada 82926-01 78462-01 XDCR I/O Record 78599 PLC Relay Card 3300
Bently Nevada 83729-01 84154-01 XDUCR I/O & Record Terminals 78599-19 PLC
GENELECTR BENTLY NEVADA CA21504-00-36-05-02 RQAUS1
BENTLY NEVADA XDUCR I/O & RECORD TERMINAL 81544-01
#1090 Bently Nevada 81545-01 Assy: 78462-01 XDCR I/O Input Card Relay Board
Bently Nevada 3300/16 Dual Vibration XY/Gap Monitor
GENELECTR BENTLY NEVADA 82981-000-130-018-02 RQAUS1
GENELECTR BENTLY NEVADA 21502-04 RQAUS1
Bently Nevada PWA 125808-02E Proximitor Seismic External Terminal Block
Bently Nevada PWA 49855-02 B / PWB49857-01 NC PLC Bentley PWB 49857 4985502
Bently Nevada 42769-01 A / PWB 42770-01 D PLC Bentley 1488 0388 01D 01A PWB42770
NEW BENTLY NEVADA PWA72009-05 PC BOARD PWA7200905
Bently Nevada PN: 124534-01 24 Vdc 3300 8mm 1-Metre Proximitor
GENELECTR BENTLY NEVADA 02270033 RQANS2
BENTLY NEVADA 84141-01 XDUCR I/O and Record Terminals
BENTLY NEVADA PWA-42727-01
GENELECTR BENTLY NEVADA 02270033 RQAUS1
BENTLY NEVADA 3300/01 SYSTEM MONITOR D531473
BENTLY NEVADA PWA78452-01 3300/01 SYSTEM MONITOR REV A D541478
BENTLY NEVADA 18745-xx 20929-02 14702-01 7200 5/8 mm PROXIMITOR SENSOR 15 Ft
BENTLY 4454-156 THERMOCOUPLE HEAT SENSOR *NEW NO BOX*
GENELECTR BENTLY NEVADA 72001-01 RQANS2
BENTLY NEVADA KEYPHASOR TERMINATION BLOCK PWA 128718-01 REV D
GENELECTR BENTLY NEVADA PWA-49855-02 RQAUS1
GENELECTR BENTLY NEVADA PWA-42727-01 (D) RQAUS1
GENELECTR BENTLY NEVADA 10513-01 RQAUS1
Bently Nevada 4452-XX Vibration Monitor Sensor Probe
BENTLY NEVADA 78462-02N 82925-01 XDCR I/O & RECORD TERMINAL D538879
GENELECTR BENTLY NEVADA PWA72928-01R RQAUS1
GENELECTR BENTLY NEVADA PWA-42769-01 (A) RQAUS1
GENELECTR BENTLY NEVADA 72001-01 RQAUS1
GENELECTR BENTLY NEVADA PWA-35508-0B RQAUS1
BENTLY NEVADA 3300 POWER SUPPLY REAR BACK PLATE / COMMS REAR CONNECTION PLATE
BENTLY NEVADA Thrust Monitor 7200 Series TP-R Front Unit
Bently Bentley Nevada Proximity Sensor Probe 21500-00-08-10-02
BENTLY NEVADA 81544-01 XDUCR I/O BOARD
BENTLY NEVADA 128085-01A *NEW NO BOX*
GENELECTR BENTLY NEVADA UMP325-11B RQAUS1
XDUCR I/O & RECORD TERMINALS 34152-01 83729-01
Bently Nevada 125720-01 Relay Module - Price Match Guarantee
GENELECTR BENTLY NEVADA PWB-40350-01 RQAUS1
Bently Nevada XDCR I/O & Record Terminals 81545-01 Alarm Relay Outputs 78599-01
Bently Nevada PWA 42727-01 E / PWB42728-01 C PLC Bentley PWB 42728 4272701
Bentley Nevada 3300/65-02-01-00-00-00-00 Dual Probe Monitor
MO-1861, BENTLY NEVADA 82926-01 XDUCR I/O + RECORD TERMINALS. 78462-01 P.
Bently Nevada 125768-01 Rack Interface IO Module
BENTLY NEVADA 8mm 330100-90-00 Proximitor Sensor
Bently Nevada 3500 125760-01 Data Manager I/O Module 12576001 SAR
BENTLY NEVADA 81544-01 XDUCR I/O BOARD
BENTLY NEVADA 81545-01 XDCR I/O BOARD
GENELECTR BENTLY NEVADA 22151-201-02 RQANS2
BENTLY NEVADA 81545-01 78462-01 XDCR I/O & RECORD TERMINALS REV H BOARD D545726
GENELECTR BENTLY NEVADA 125065-60 RQANS2
GENELECTR BENTLY NEVADA 40180-02-EACH RQANS2
BENTLY NEVADA PROXIMITOR SENSOR 330100-50-00
GENELECTR BENTLY NEVADA 22151-201-02 RQAUS1
BENTLY NEVADA PROXIMITOR SEISMIC EXTERNAL TERMINAL BLOCK 125808-02 REV E
3-BENTLY NEVADA CB2W100-15 SPLASH PROOF CABLE ASSEMBLY (NEW)
BENTLY NEVADA 125388-01H *NEW NO BOX*
NEW IN BOX BENTLY NEVADA 4454-156 THERMOCOUPLE HEAT SENSOR EXTENSION CABLE, B99
BENTLEY NEVADA 7200 RVXY-II VIBRATION MONITOR 72870-03
GENELECTR BENTLY NEVADA 125065-30 RQAUS1
GENELECTR BENTLY NEVADA 10513-02 RQANS2
BENTLY NEVADA 3500 FUTURE EXPANSION BLANK PLATE 128275-01 E (DR1G1)
Bently Nevada XDUCR I/O & Record Terminals 81544-01 78462-02
GENELECTR BENTLY NEVADA CA21504-08-24-05-02 RQAUS1
BENTLY NEVADA 81545-01 XDCR I/O RECORD TERMINAL MODULE REV M D536253
GENELECTR BENTLY NEVADA 131178-01 RQANS1
BENTLY NEVADA 167887-025-01 COMMUNICATIONS CABLE FOR SYSTEM MONITOR.
GENELECTR BENTLY NEVADA 131178-01 RQANS2
GENELECTR BENTLY NEVADA 131178-01 RQAUS1
BENTLY NEVADA 128277-01C *NEW NO BOX*
GENELECTR BENTLY NEVADA 10513-02 RQAUS1
BENTLY NEVADA 81544-01 XDUCR I/O RECORD TERMINAL MODULE REV D D531459
GENELECTR BENTLY NEVADA 80097-01C RQAUS1
GENELECTR BENTLY NEVADA 136386-01 RQAUS1
GENELECTR BENTLY NEVADA 80097-01 RQAUS1
GENELECTR BENTLY NEVADA 1909401 RQANS2
GENELECTR BENTLY NEVADA 80098-01 RQAUS1
GENELECTR BENTLY NEVADA 80097-01 (C) RQAUS1
GENELECTR BENTLY NEVADA 80097-01 (D) RQAUS1
BENTLY NEVADA 4454-156 THERMOCOUPLE HEAT SENSOR EXTENSION CABLE D542216
BENTLY NEVADA 4454-156 THERMOCOUPLE HEAT SENSOR EXTENSION CABLE D541970
Bently Nevada 3500 Future Expansion Blank Plate 128275
BENTLY NEVADA 128276-01E PLC MODULE P *NEW NO BOX*
GENELECTR BENTLY NEVADA 128275-01 RQAUS1
GENELECTR BENTLY NEVADA 128276-01 RQAUS1
GENELECTR BENTLY NEVADA C147M RQAUS1
Bently Nevada 330500-07-00 Velomitor
GENELECTR BENTLY NEVADA 1584 RQANS2
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