6GK7 243-2AX01-0XA0

6GK7 243-2AX01-0XA0 

什么是变压器的过励磁？变压器的过励磁是怎样产生的？

答：当变压器在电压升高或频率下降时都将造成工作磁通密度增加，变压器的铁芯饱和称为变压器过励磁。

电力系统因事故解列后，部分系统的甩负荷过电压、铁磁谐振过电压、变压器分接头连接调整不当、长线路末端带空载变压器或其他误操作、发电机频率未到额定值过早增加励磁电流、发电机自励磁等情况都可能产生较高的电压引起变压器过励磁。

15、变压器的过励磁可能产生什么后果？如何避免？

答：当变压器电压超过额定电压的10%，将使变压器铁芯饱和，铁损增大。漏磁使箱壳等金属构件涡流损耗增加，造成变压器过热，绝缘老化，影响变压器寿命甚至烧毁变压器。

避免方法： 

（1）防止电压过高运行。一般电压越高，过励情况越严重，允许运行时间越短。

（2）加装过励磁保护：根据变压器特性曲线和不同的允许过励磁倍数发出告警信号或切除变压器。

6GK7 243-2AX01-0XA0 

100001419 KIT, Bellows Assy, NW40

4 AMAT 0020-31296 Screw, 6-32x1/2LG Alum Vent 7/64 hex

000-6295-45 MCC 94V Board

Amphenol 10368 17-1724-1

AMAT 3870-01165 Valve Quick Exhaust 2 Way 5-150 PSI

MRC 899-02-054 Non-Cooled D.S.S. Plate Inset

828-36-002 Pole Pc Outer Long, 828-36-017, 828-20-005

Nikon Objective Lens BD Plan 20 / 0.4, 210/0

QTY 50 New AMAT 3690-01771 Screw 080x5/32

2 NEW Parker TRIPLELOK-SS, MALE Fitting, 

ENI OEM-12B-07 RF Generator AMAT 0190-76048 calibrated 

AMAT 0010-70264 & AMAT 0010-70149 HP Robot Driver

RGA AMETEK Dycore M100 P/S, M100FG equipment Monitor

2 Zygo KMS400 Inspection equipment, Objectives, stages

Orion Reticle Photomask Inspection with Aludra system

Applied Materials AMAT 0010-21751 Resonator, 300 mm 

Novellus Match 02-282128-00, used

4 used AE Advanced Energy HFV 8000 RF Generator 

0190-26328 BPG HOT ION GAUGE WITH DEVICE NET, Looks New

MKS baratron 223B-11117----S?, 1 TORR, used

BROOKS MFC PureDigital 6256 SILANE, 500 SCCM, used

NEW Unit UFC-1660, HBr, 100 SCCM, CALIBRATION SHEET

NEW BROOKS 5964 MFC, SiH4, 200 SCCM, CALIBRATION SHEET

BROOKS 6256 MFC, CF4, 50,5 SCCM FLOW RATE looks clean

NEW Aera MFC FC-D985CT-BF, CO, 500 SCCM

LOT OF 4 AMAT 3691-01555 SCR CAP SKT HD1/4-20X7/8L TORX

NEW AE MDX-L6 POWER SUPPLY 3152343-000B, 0190-76190-001

PATLITE ST-T VOLT=120V AC BULB=140V 10W, USED

AMAT 3870-00408 VALVE PNEU AIR PILOTED 4 WAY W/SPRING

VENA ENGINEERING MOTOR CONTROLLER BOARD 3100-0009 REV B

275 convectron gauge granville-phill?ips 275100-1 

PRECISION SENSORS DIV ABSOLUTE PRESSURE SWITCH E48W-H79

AMAT 3700-01985 SEAL CTR RING ASSY NW40 W/VITON ORING 

TWO RF CABLE 0191598227 REV B, 430" long

AMAT 3700-01985 SEAL CTR RING ASSY NW40 W/VITON ORING 

adaptec AHA-2940/2940U ASSY 916506-01 BOARD

AMAT 3700-01054 ORING ID 6.484 CSD .139 VITON75 DURO

adaptec AHA-2940U2B ASSY 1692306-02 BOARD

adaptec AHA-2940W/2940U?W ASSY 917306-40 BOARD

NEW, PARKER QUICK DISCONNECT CPI 6HB-Q6VY-SSS

NEW, AMAT 1350-01103 MKS BARATRON 852B61PCJ2GC

BOC Edwards Active Gauge AIM-PL-NW25

6GK7 243-2AX01-0XA0