Rockwell Allen-Bradley 1746OW16 1794-TB3
发电机失磁异步运行时,一般处理原则如下:
(1)对于不允许无励磁运行的发电机应立即从电网解列,以免损坏设备或造成系统事故.
(2)对于允许无励磁运行的发电机应按无励磁运行规定执行以下操作:
1)迅速降低有功功率到允许值(本厂失磁规定的功率值与表计摆动的平均值相符合),
此时定子电流将在额定电流左右摆动.
2)手动断开灭磁开关,退出自动电压调节装置和发电机强行励磁装置.
3)注意其它正常运行的发电机定子电流和无功功率值是否超出规定,必要时按发电机允许过负荷规定执行.
4)对励磁系统进行迅速而细致的检查，如属工作励磁机的问题,应迅速启动备用励磁几恢复励磁.
5)注意厂用分支电压水平,必要时可倒至备用电源接带.
6)在规定无励磁运行的时间内,仍不能使机组恢复励磁,则应将发电机自系统解列.
大容量发电机的失磁对系统影响很大.所以,一般未经过试验确定以前,发电机不允许无励磁运行.
国产300MW发电机组,装设了欠磁保护和失磁保护装置.为了使保护装置字系统发生振荡时不致误动,将失磁保护时限整定为1S.发电机失磁时,经过0.5S,欠磁保护动作，发电机由自动励磁切换到手动励磁,备用励磁电源投入运行,如果不是发电机励磁回路故障,发电机仍可拉入同步而恢复正常工作.如果备用励磁投入运行后,发电机的失磁现象仍未消除,那么经过S,失磁保护动作将发电机自系统解列。
在变压器自动跳闸时，如有备用变压器，应将备用投入，以检查自动跳闸的原因。若无备用，则检查变压器跳闸是何种保护动作，以及变压器跳闸时有何外部现象，若检查证明变压器跳闸不是内部故障所致，而是由于过负荷、外部短路或保护装置二次回路故障所引起，则可不经内部检查即可投入。如有故障，则经消除后再行送电。
1：首先大概确定跳闸的原因，并将两侧开关退出运行
2：故障分析，分清是变压器本体故障还是负荷侧短路引起的跳闸，可以根据报警信号判断故障的范围，究竟是过流跳闸还是速断跳闸，大型的变压器还有差动，瓦斯等
3：如果是外部故障则根据信号切断故障侧的出线开关，对变压器试送，保证其他无故障部分及时恢复供电
4：如
SIEMENS S42024-A1809-A1 G01 SLX102 S4202-A1809 30 DAY WARRANTY
From Israel
SIEMENS S42024-A1737-A2 G01 S42024-A1737-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-A1804-A1 G02 SUB102 S42024-A1804-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-A1732-B1 G01 S42024-A1732-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-L5061-B101-1 OCU MN PROC UNIT WM2CLL0
SIEMENS S42024-L3170-A2
From Israel
SIEMENS S42024-L5085-A397-1 OCU TEX CARD WMD5G40
SIEMENS S42024-L3183-AT
From Israel
SIEMENS S42024-A1744-A2 G01 DSC8V24 S42024-A1744-U501 30 DAY WARRANTY
From Israel
SIEMENS S42024-A1760-A1 G03 S42024-A1760-U501 WARRANTY 30 DAY
From Israel
SIEMENS 0-PROTECTION CARD 1310nm, LH S42024-D3560 D101 30 DAY WARRANTY
From Israel
SIEMENS 0-WORKING CARD 1310nm, LH S42024-D3559 D101-D2 30 DAY WARRANTY
From Israel
Siemens S42024-D5013-A100-7 SN64 S42024-D5013 30 DAY WARRANTY
From Israel
Siemens S42024-D5008-A201-01 OIS1D 1550nm S42024-D5008 30 DAY WARRANTY
From Israel
Siemens S42024-D5001-A200-6 EI2-42 120 Ohm S42024-D5001 30 DAY WARRANTY
From Israel
Siemens V52 FRAME RELAY CARD S42024-A1842-A1-E1 gebr.
From Germany
Siemens S42024-L5288-C100-7 SURPASS hiT 7550 TEX V5 2.5Gbit/s -10Gbit Multiplex
S42024-L3304-A200-07 SIEMENS CAM Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-07 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-06 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A123-03 SIEMENS OCR192-23 Module 193.7THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A127-01 SIEMENS OCR192-27 Module 193.3THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-07 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-B101-03 SIEMENS MPU-B Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-05 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-A101-03 SIEMENS MPU Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L5090-C150-2 SIEMENS OMDFC Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A111-03 SIEMENS OCR192-11 Module 194.9THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-01 OSCT SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
SIEMENS SURPASS hiT 7035 FAN UNIT S42024-L5474-A1-01
From China
SIEMENS SURPASS hiT 7060 FAN UNIT S42024-L5351-A1-07
From China
S42024-L3304-A200-07 SIEMENS CAM Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-07 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-06 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A123-03 SIEMENS OCR192-23 Module 193.7THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A127-01 SIEMENS OCR192-27 Module 193.3THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-07 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-B101-03 SIEMENS MPU-B Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-05 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-A101-03 SIEMENS MPU Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L5090-C150-2 SIEMENS OMDFC Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A111-03 SIEMENS OCR192-11 Module 194.9THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-01 OSCT SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3304-A200-07 SIEMENS CAM Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-07 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-06 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A123-03 SIEMENS OCR192-23 Module 193.7THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A127-01 SIEMENS OCR192-27 Module 193.3THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-07 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-B101-03 SIEMENS MPU-B Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-05 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-A101-03 SIEMENS MPU Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L5090-C150-2 SIEMENS OMDFC Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A111-03 SIEMENS OCR192-11 Module 194.9THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-01 OSCT SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3304-A200-07 SIEMENS CAM Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-07 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-06 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A123-03 SIEMENS OCR192-23 Module 193.7THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A127-01 SIEMENS OCR192-27 Module 193.3THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-07 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-B101-03 SIEMENS MPU-B Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-05 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-A101-03 SIEMENS MPU Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L5090-C150-2 SIEMENS OMDFC Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A111-03 SIEMENS OCR192-11 Module 194.9THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-01 OSCT SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
Siemens S42024-C3016-A1 MAINFRAME BOARD
From Israel
SIEMENS S42024-A1736-A1 G02 S42024-A1736-U501
From Israel
SIEMENS S42024-A1757-A1 G01 S42024-A1757-U501-2 30 DAY WARRANTY
From Israel
SIEMENS SURPASS hiT 7035 FAN UNIT S42024-L5474-A1-01
From China
SIEMENS SURPASS hiT 7060 FAN UNIT S42024-L5351-A1-07
From China
Siemens S42024-D5004-A100-4 IPU16 S42024-D5004 30 DAY WARRANTY
From Israel
SIEMENS S42024-A1809-A1 G01 SLX102 S4202-A1809 30 DAY WARRANTY
From Israel
SIEMENS S42024-A1737-A2 G01 S42024-A1737-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-A1804-A1 G02 SUB102 S42024-A1804-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-A1732-B1 G01 S42024-A1732-U501 WARRANTY 30 DAY
From Israel
SIEMENS S42024-L5061-B101-1 OCU MN PROC UNIT WM2CLL0
SIEMENS S42024-L3170-A2
From Israel
SIEMENS S42024-L5085-A397-1 OCU TEX CARD WMD5G40
SIEMENS S42024-L3183-AT
From Israel
SIEMENS S42024-A1744-A2 G01 DSC8V24 S42024-A1744-U501 30 DAY WARRANTY
From Israel
SIEMENS S42024-A1760-A1 G03 S42024-A1760-U501 WARRANTY 30 DAY
From Israel
SIEMENS 0-PROTECTION CARD 1310nm, LH S42024-D3560 D101 30 DAY WARRANTY
From Israel
SIEMENS 0-WORKING CARD 1310nm, LH S42024-D3559 D101-D2 30 DAY WARRANTY
From Israel
Siemens S42024-D5013-A100-7 SN64 S42024-D5013 30 DAY WARRANTY
From Israel
Siemens S42024-D5008-A201-01 OIS1D 1550nm S42024-D5008 30 DAY WARRANTY
From Israel
Siemens S42024-D5001-A200-6 EI2-42 120 Ohm S42024-D5001 30 DAY WARRANTY
From Israel
Siemens V52 FRAME RELAY CARD S42024-A1842-A1-E1 gebr.
From Germany
Siemens S42024-L5288-C100-7 SURPASS hiT 7550 TEX V5 2.5Gbit/s -10Gbit Multiplex
S42024-L3304-A200-07 SIEMENS CAM Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-07 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-06 OMD4-2 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A123-03 SIEMENS OCR192-23 Module 193.7THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A127-01 SIEMENS OCR192-27 Module 193.3THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-07 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-B101-03 SIEMENS MPU-B Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A220-05 OMD42-1 SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3310-A101-03 SIEMENS MPU Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L5090-C150-2 SIEMENS OMDFC Module
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3311-A111-03 SIEMENS OCR192-11 Module 194.9THz
90 Day Hardware Warranty + Free Fedex Shipping
S42024-L3313-A210-01 OSCT SIEMENS Module
90 Day Hardware Warranty + Free Fedex Shipping
NEW PRX IGBT KD224505 OVER NIGHT SHIPPING AVAILABLE
Ort: Kanada
NEW Kollmorgen Servostar drive 603,S60300,1 Yr Warranty...
Vickers-Kollmor?gen Acramatic Servo AS10301,1 Yr Wrty NE...
NEW TOSHIBA MG15G1AL3 OVER NIGHT SHIPPING
NEW MG200H1AL2 TOSHIBA IGBT MODULE OVER NIGHT SHIPPING
Vickers Acramatic Servo AS10302,1 Rebuilt, Yr Warranty,...
MITSUBISHI IGBT CM400DY1-1 Over night ship available ca...
NEW FANUC A16B-1212-0531 / 06B404953 POWER SUPPLY UNIT
Kollmorgen Power supply unit PA5000 , 1 Yr Warranty , F...
Kollmorgen POWER SUPPLY PSR4/5A-112-040?0 FAST SHIP
LENZE VECTOR DRIVE INVERTER 8200 SERIES E82EV152_4C200
EMERSON Servo drive DINVERTER DIN3380110B REFURBISHED
NEW TYCO IGBT P480A03 - MODULE, 06087 FAST SHIP AVAIABL
HEIDENHAIN 1387-020-2048 ENCODER good
NEW MITSUBISHI ELECTRIC IGBT TM10T3B-H F2101A HF2101A
Kollmorgen Servostar CD CB06561,1 Yr Warranty, 1 day s...
SIEMENS 6RA7031-6FV62-0?-Z,SIMOREG DC MASTER, Fast ship
SIEMENS 6SN1162-0BA02-0?AA2 RADIAL GEBL AESE COOLING FAN
NEW TOSHIBA MIG30J103H IGBT Module,Call 905-465-0346
NEW Infineon IGBT FZ1200R16KF4 OVER NIGHT SHIPPING
Compumotor Digiplan Servo Drive BLH75B BLH 75B Parker
1P SIEMENS 6SN1123-1AB00-0?HA2 = 0HA1 LT MODULE 2 X 8AM...
DYNAMIC BRAKE RESISTOR BWD500072 72 OHM , 850 VDC FOR K...
TOSHIBA MG25J6ES40 Compatible to IEF260A2 IGBT Module
Personality module PM030BF4050QH-0 for Electro-craft
GIDDINGS & LEWIS CENTURION DS-100 DS120, 401-34201-22
Personality module PM020BS4030PH-0 for Electro-craft
Kollmorgen Servostar drive CE20560,1 Year Warranty, NE...
Kollmorgen SERVOSTAR PROFIBUS 011020900560 CARD
NEW MITSUBISHI IGBT QM200HA-2H OVER NIGHT SHIPPING
Compumotor S6-Drive S Series Parker Stepper Motor drive
Ort: Kanada
NEW BSM75GB120DN2 IGBT Module EUPEC FAST SHIP AVAILABLE