本文简要介绍了低压配电变压器常见问题及应急措施。
关键词:低压配电变压器;常见问题;对策研究
电力变压器是静止的电气设备,工业企业的变压器通常把6—10kv的高压电降低为0.4kv的低压电,供给电气设备使用。一般把这种电力系统最末一级,直接把电能供给用户的变压器称为低压配电变压器。
一、低压配电变压器常见事故原因分析及应急措施
1.变压器内部出现异常声响。
变压器内部出现异常声响可能有以下原因:a.严重的过负荷使变压器内部发生沉重的“嗡嗡”声;b.由于内部有接触不良或有击穿点,使变压器内部发生“吱吱”或“噼啪”的放电声;c.由于变压器顶盖连接轴栓个别零件松动,变压器铁芯未被夹紧,造成硅钢片振动,会发出强烈噪声;d.电网中有接地或短路故障时,绕组中流过很大的电流,会发出强烈的噪声;e.变压器接有大型动力设备或能产生谐波电流的设备时,设备运行都可能导致变压器发出“哇哇”的叫声;f.由于铁芯出现谐振,变压器发生忽粗忽细的噪声;g.变压器的原边电压过高、电流过大都会发生异声;h.由于过电压、绕组或引出线对外壳放电,或铁芯接地线断开,致使铁芯对外壳放电,均使变压器发出放电声。
应急措施:当发现变压器发出异常声响时,应根据上述分析判断其可能的原因,有针对性的采取应急措施。如变压器内部发出的异常声响是由于零件松动或绕组导线击穿产生的,应立即停电处理,以免事故进一步扩大。
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SQL ANYWHERE STUDIO V9 17889-09
SEAGATE ST373455LC 15K.5 ULTRA320 73GB SCSI
SUPERMICRO C2SBC-Q DESKTOP MOTHERBOARD - INTEL CHIP
INTEL SE7520JR2ATAD2 DUAL SOCKET 604 SATA DDR2
SHARP LQ150X1LW71N 15" TFT PANEL FACTORY WARRANTY
ITOX SR960-N MOTHERBOARD RETAIL KIT WITH WARRANTY
INTEL AA 654850-206 SOCKET 7 MOTHERBOARD
AU OPTRONICS 8.4" TOUCHSCREEN B084SN02 G084SN02
SHARP LQ154K1LA1F 15.4" TFT-LCD MODULE WARRANTY
INTEL TCPD0201 1U SERVER BAREBONES
DAKTRONICS 72301-00 CHASSIS WITH POWER SUPPLY 400W
SUPERMICRO X5DP8-G2-B SERVERBOARD WITH WARRANTY
Seagate ST373455SS Cheetah 15K.5 SAS 3Gb/s 73GB HD
SYSTIUM 72500-01R MOTHERBOARD CASE WITH POWER CORD
3WARE 8506-4LP 4-PORT PCI SATA 150 RAID 10 PACK
10 PACK
MICRO MM-5428CN 1G 64-bit/66MHz PCI Interface Card
NEC NL6448BC33-63D 10.4" LCD SCREEN WITH WARRANTY
ADVANTECH APC 2320-BP7001E-T
SUPERMICRO PW-652-2H POWER SUPPLY
IBM 43W7481 HOT SWAP HARD DRIVE 73GB 15K 3.5" SAS
FUJITSU MAW3147NC 147GB 10K 80 PIN 3.5" SCSI
ADAPTEC 2253300-R HARD DRIVE AND RAID CONTROLLER
MICRO MM-5428CN 256mb 64-bit/66MHz PCI Interface Card
TYAN S5372G3NR TEMPEST i5000VS DUAL LGA771
INDIGITA IDT804PCI HOST ADAPTER PCI 64 BIT 720-050
ADVANTECH PCI-104 CPU MODULE PCM-3386F-S0A2E
DIGI ACCELEPORT 2R 920 MULTI SERIAL ADPTR 77000573
DIGI-77000001- PC/X 4-PORT MULTIPORT SERIAL ADAPTER
DIGI COM/4i RS232 BOARD 77000621
RADISYS EPC2325 PICMG 1.2GHZ TELEPROCESSOR BOARD
OPTREX T51513D104JU-FW 10.4" TFT LCD
ITOX SR960-N MOTHERBOARD W/ COPPER COOLER AND WTY
ADVANTECH PCE-5120G2-00A2E BOARD SUPPORT CORE 2 DUO
HP CD/DVD±RW COMBO DRIVE FS943AA
ELO E785356 20.1" INTELLITOUCH FLAT GLASS SCREEN
IN BOX ACP02320 2U RACK MOUNT CHASSIS ONLY
INTEL SR1530AH 1U BAREBONES SERVER QUAD-CORE W/RAIL
WESTERN DIGITAL WD40ADFD RAPTOR HD 74GB SATA
INTEL TCPA0201W 1U SERVER BAREBONES P4 3.2GHZ RACK
Western Digital RE3 WD7502ABYS 750 GB SATA 3G 7200 RPM
HITACHI DESKSTAR OA31635 160GB HARD DRIVE
GENUINE OKI 41945601 FUSER KIT 120 V
INTEL MX945GM-D MOTHERBOARD KIT WITH WARRANTY
INTEL DPS-750EB DELTA 750 WATTS POWER SUPPLY
ACCES USB-IIRO-8-OEMKG BOARD, CABLE, CD SET
ITOX G7L330B2G MOTHERBOARD WITH LGA775 SOCKET W/KIT
HITACHI HUS151473VLS300 73GB 15000RPM 3.5" 0B20875
HANTOUCH HT150A-NEOFS52 15" TOUCHSCREEN 4 WIRE
AAEON TF-EMB-945T-A10 MOTHERBOARD WITH WARRANTY
AAEON TF-GENE-9310-A10-02 3.5" EMBEDDED SYSTEM
ADVANTECH AIMB-253L-00A1E MOTHERBOARD WITH WARRANTY
SR1550 INTEL 1U SERVER CHASSIS WITH 1 POWER SUPPLY
INTEL FXX830WPSU 830W REDUNDANT PS HOT SWAP SC5400
GENUINE OKI 41945521 TRANSFER BELT (60,000 YIELD)
SEALEVEL SERIAL INTERFACE CARD PN# 7105-DB9
TEAC DV-W520GM CD-RW/DVD+/-RW
SEAGATE MOMENTUS ST9100821AS 100GB 7200RPM SATA
D945GCLF MINI ITX MOTHERBOARD W/1.6GHZ PROCESSOR
GENUINE OKI 41962804 BLACK IMAGE DRUM
GENUINE OKI 41962803 CYAN IMAGE DRUM
GENUINE OKI 41962802 MAGENTA IMAGE DRUM
资讯来源:漳州鼎晟达自动化设备有限公司
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