GE IC697MDL240
GE IC697MDL240
建筑物的防雷是一門古老的技術，但是防雷技術在近二十年發生了很大的變化，其中重要的是在防雷概念上有如下幾點轉變：
1)防雷的重點從人身和電氣設備的安全轉變為通訊和信息系統的安全。過去建筑物的防雷技術以防直擊雷為主，側重防機械性破壞和雷電反擊;現在則以防感應雷擊為主，側重防雷電的電磁感應效應。
2)外部的防雷技術從以前的避雷針和避雷帶轉變為現在的避雷網和法拉第籠;內部的防雷技術從以前的以隔離方式為主轉變為現在的以等電位聯接方式為主。
3)以前檢驗接地系統是否合格以接地電阻值為準，現在側重于接地結構兼接地電阻值，特別是從獨立接地到等電位聯接方式的轉變。
如上所述，防雷技術和防雷概念雖然有了很大的變化，但直至現在，防雷的理論基礎仍然還是安全地引雷入地，閃電是一個電流源(更確切地說是電流波)，而不是電壓源，防雷裝置是給雷電流提供一條或幾條低阻抗的接地通道，這些基本概念仍然沒變。
CROUSE HINDS VN73 GLASS GLOBE BLUE FOR FORM 100V SERIES FIXTURE NEW IN BOX
REXROTH R911242861 INDUCTION SERVO MOTOR 2AD132D-B35LB1-AS03-A2N1 NEW CONDITION
SQUARE D 9001 D1V1W PILOT LIGHT BEZEL CLEAR (SET OF 2) NOS CONDITION IN BOX
SQUARE D 9001 D4G2S SELECTOR SWITCH 2-POSITION NEW CONDITION IN BOX
RELIANCE ELECTRIC RE041BR FACTORY REPLACEMENT BRUSH NEW CONDITION / NO BOX
GOULD SHAWMUT NH2 gl-gL-gG FUSE 250A 690V NEW CONDITION / NO BOX
GOULD SHAWMUT NH2 gl-gL-gG FUSE 125A 690V NEW CONDITION / NO BOX
ALCO CONTROLS M340SH SOLENOID VALVE 1" NPT 230V 150 SWP 365F NOS CONDITION
YARWAY IMPULSE 3/4" STAINLESS STEAM TRAP 400 PSI 450F NEW CONDITION NO BOX
RELIANCE ELECTRIC RE44AT FACTORY REPLACEMENT BRUSH NEW CONDITION / NO BOX
RELIANCE ELECTRIC RE41BT FACTORY REPLACEMENT BRUSH NEW CONDITION / NO BOX
GENERAL ELECTRIC 894A505P01 ELECTROGRAPHITIC BRUSH XDT563 NEW CONDITION
STATIC CONTROLS SCC CB-0970-016 LED DISPLAY BOARD NOS CONDITION / NO BOX
SQUARE D 9012 GGW-4 PRESSURE SWITCH PILOT LIGHT 240PSIG QUICK DISCONNECT NNB
TRANE VAL2378 THERMAL EXPANSION VALVE NEW CONDITION / NO BOX
ALLEN BRADLEY PHOTOSWITCH 42SRR-6006 TRANS BEAM RECIVER 20-264 VAC/DC NEW NO BOX
ASCO 27-462-1 FACTORY SOLENOID COIL 120V NOS CONDITION IN BOX
ASCO 99-216-1D FACTORY SOLENOID COIL 110/120V NEW CONDITION IN BOX
ASCO 302313 SOLENOID VALVE SERVICE KIT NEW CONDITION IN BOX
ASCO 230784 SOLENOID VALVE SERVICE KIT NEW CONDITION IN BOX
ASCO 27-478-1 FACTORY SOLENOID COIL 110/115V NOS CONDITION IN BOX
ASCO 90-266-1 FACTORY SOLENOID COIL 115/60 NOS CONDITION IN BOX
ASCO 822385 SOLENOID VALVE SERVICE KIT 158-587 NEW SEALED CONDITION IN BOX
ASCO 302-290 SOLENOID VALVE SERVICE KIT 8211 AC NEW CONDITION IN BOX
DEVILBISS P-HC-4733 FACTORY SWIVEL CONNECTOR NEW CONDITION IN PACKAGE
DEVILBISS P-HC-4528 FACTORY SWIVEL CONNECTOR NEW CONDITION IN PACKAGE
DEVILBISS P-H-431 FACTORY 90 ELBOW CONNECTOR NEW CONDITION IN PACKAGE
MILLER ELECTRIC 7101 FACTORY REPLACEMENT TOGGLE SWITCH NEW IN PACKAGE
MILLER ELECTRIC 080283 BRUSH COVERS (SET OF 10 ) NEW IN PACKAGE
DEVILBISS KK-5046 MOUNTING BLOCK 191995 NEW CONDITION IN PACKAGE
DEVILBISS AGG-403 CONTROL VALVE 191311 NEW CONDITION IN PACKAGE
UNIDEN APX 115 RAPID CHARGER NEW CONDITION IN BOX
ASCO 314453 SOLENOID VALVE SERVICE / REBUILD KIT NEW CONDITION IN BOX
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CUTLER HAMMER 10250TB62 MUSHROOM BUTTON FOR PUSH-PULL OPERATOR NEW IN PACKAGE
MOTOROLA KT-32903-01 CONNECTOR KIT PS/2 TO AT/XT NEW IN PACKAGE
PEPPERL+FUCHS NBB10-30GM60-A2 10M PROXIMITY SENSOR P/N 089945 NEW IN PACKAGE
PEPPERL+FUCHS NBN4-12GM60-WS PROXIMITY SENSOR P/N 085294 NEW IN PACKAGE
PEPPERL+FUCHS NJ 8-18GM50-E2-V1 PROXIMITY SENSOR P/N 084485 NEW IN PACKAGE
PEPPERL+FUCHS NBN 8-18GM60-WS-V11 PROXIMITY SENSOR P/N 030802 NEW IN PACKAGE
POTTER & BRUMFIELD R50-E2Y1-12 RELAY 2A 28VDC / 1A 120VAC NEW IN PACKAGE
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NORDSON 271936 HIGH AMPERAGE THERMOSTAT KIT NEW CONDITION IN PACKAGE
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OPCON 8532B-6501 SOLDER IN RELAY P/N 109081 NEW CONDITION IN BOX
STRIKE FORCE 3134241 RESISTOR 12V WITH 2 FUSES NEW IN PACKAGE
PEPPERL+FUCHS NBB5-F9-E0 PROXIMITY SENSOR P/N 081838 NEW IN PACKAGE
PEPPERL+FUCHS NBB5-F9-E2 PROXIMITY SENSOR P/N 081839 NEW IN PACKAGE
PEPPERL+FUCHS NCB8-18GM50-Z4-V1 PROXIMITY SENSOR P/N 128872 NEW IN PACKAGE
WOODHEAD DN11A-M030 DEVICENET 5P CABLE ASSEMBLY 3M TRUNK CABLE NEW IN PACKAGE
WHITMAN CONTROLS P199G-10H-F12TB PRESSURE SWITCH 125VAC 45PSI NEW IN PACKAGE
SKF H313 BEARING ADAPTOR ASSEMBLY 2-3/8" SHAFT NEW CONDITION IN BOX
FESTO RWN/0-3-1/8B PNEUMATIC LIMIT VALVE 14-116 PSI NEW CONDITION NO BOX
SIMPSON 50MV PORTABLE SHUNT 150A NEW CONDITION / NO BOX
JOHNSON CONTROLS M-2500-1 SOLAR COMPENSATOR 4-1/4" SENSING NEW CONDITION IN BOX
FUJI CONTROLS BRR 25N-012S EARTH LEAKAGE RELAY 120V 200A 500MA NEW CONDITION
3M 51119 273L IMPERIAL MICROFINISHING FILM ROLL 15 MIC 450FT X 5/8 NEW CONDITION
RO MAN ROMAN S46680X2240 TRANSFORMER 80 KVA 460V NEW CONDITION
BANNER 17276 FIBER END ASSEMBLY BT23S NEW CONDITION IN BOX
BANNER 20216 FIBER END ASSEMBLY BT12S NEW CONDITION IN BOX
ALLEN BRADLEY 43GR-FOS20SL GLASS FIBER OPTIC CABLE NEW CONDITION IN PACKAGE
PARKER 32 CFMRCDUC 7.000 PNEUMATIC RODLESS CYLINDER 7.0 STROKE NEW NO BOX
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ALLEN BRADLEY 855T-B24TL7 STEADY LED CONTROL TOWER STACK LIGHT CLEAR 24V NIB
BALLUFF BES02K6 PROXIMITY SENSOR BESM12ML-PSC80E-S04G-W01 NEW CONDITION
AURORA MIB12 ROD END REPLACEMNT BEARING INSERT 3/4" BORE 1-1/2" OD NEW NO BOX
HONEYWELL MICRO SWITCH 1PB43 SUBMINIATURE PUSHBUTTON SWITCH NEW IN BOX
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BANNER IR2. 53SM2.5 FIBER OPTIC CABLE WITH PANCAKE HEAD 17879 NEW CONDITION
NUMATICS 3FPRN12 PNEUMATIC FLOW CONTROL VALVE NEW CONDITION IN PACKAGE
MILLER ELECTRIC 110-809 PC BOARD NOS SEALED CONDITION IN PACKAGE
FASTENAL 73462 S/S SHCS 1/4-20 X 1 STAINLESS HEX HEAD BOLTS NEW PACKAGE OF 50
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BROOKS INSTRUMENT 1110DM32CBGAA FLOW METER 0-250 MM NEW CONDITION NO BOX
WESTINGHOUSE KD3400F CIRCUIT BREAKER 400A 600V 3 POLE NEW CONDITION / NO BOX
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TURCK BI2-CRS317-AP4X2-H1141/S34 PROXIMITY SWITCH 4571690 31.7MM PROBE NIB
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ALLEN BRADLEY 871P-BW15N40-N3 VERSACUBE PROXIMITY SENSOR 15MM NEW IN PACKAGE
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MARTIN PARRY 5HDG SYNCHRO DIFFERENTIAL TRANSMITTER 90V NEW CONDITION
BENDIX AVIATION 5HG SYNCHRO TRANSMITTER 115V 60 CYCLE NEW CONDITION
VERNITRON 5HDG SYNCHRO DIFFERENTIAL TRANSMITTER 115V NEW CONDITION
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MOORE PRODUCTS 771-8SNF2 TRANDUCER 16 MA INPUT NOS CONDITION IN BOX
MOORE PRODUCTS 771-16SNF2 TRANDUCER 16 MA INPUT NOS CONDITION IN BOX
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ALLIED ESYN AT-TS12TR TURBOSTACK ETHERNET 12 PORT HUB NOS CONDITION
LEVITON 5500-190 RACK MOUNT TRANSIENT VOLTAGE SURGE SUPPRESSOR 15A 125VAC NNB
BROOKS INSTRUMENT 1110CC21AGHAA FLOW METER 5.0-50.0 SCCM AIR NEW CONDITION
LITFUSE KLK 6 FAST ACTING MIDGET FUSES 6A 600VAC NEW BOX OF 10 FUSES
BUSSMANN FNQ-1-1/2 TRON TIME-DELAY FUSES 1-1/2A 500VAC NEW BOX OF 10
BUSSMANN HVA 3/8 FAST ACTING FUSES 3/8A 1000V 3" LONG (SET OF 3) NEW NO BOX
BUSSMANN HVA 1/8 FAST ACTING FUSES 1/8A 1000V 3" LONG (SET OF 3) NEW NO BOX
FUJI FI-DST-1CN-21 OUTPUT BOARD NOS CONDITION IN BOX
VALENITE TNMG432 VN5 COATED CARBIDE INSERTS (NEW BOX OF 10)
UNICO 103-067.5.9715 SENSOR CONTROL BOARD NEW CONDITION / NO BOX
HARTMAN ALLIS CHALMERS 36-3000-004 I/O BOARD NOS CONDITION
R+W STEEL FLEX COUPLING ASSY. 1-3/4" & 1-1/2" SLEEVES NEW CONDITION / NO BOX
REXNORD NS881-25T 25MM KW SPLIT SPROCKET P/N 614-44-25 NEW CONDITION IN BOX
PARKER PS513P PUSH-N-DRAIN PNEUMATIC DRAIN KITS (SET OF 10) NEW IN PACKAGE
MARPOSS 3194235213 FACTORY REPLACEMENT FINGER NEW CONDITION IN PACKAGE
MARPOSS 3294521203 FACTORY REPLACEMENT CONTACT NEW CONDITION IN PACKAGE
MARPOSS 3294523004 FACTORY REPLACEMENT CONTACT NEW CONDITION IN PACKAGE
MARPOSS 1044351181 FACTORY REPLACEMENT CONTACT NEW CONDITION IN PACKAGE
FAFNIR 3MM307WI CR DUL SUPER PRECISION ANGULAR CONTACT BEARING NEW CONDITION
FAG 7602030 SUPER PRECISION ANGULAR CONTACT BEARING NEW CONDITION NO BOX
BARDEN 109HDL PRECISION ANGULAR CONTACT BEARING NEW CONDITION NO BOX
