描述

另外，國外廠家根據(jù)GIS的熱穩(wěn)定電流來計算接地線截面，并有具體的計算公式和曲線，計算的參數(shù)包括接地的短路電流、故障的持續(xù)時間、接地線相應(yīng)的允許溫升值，其中接地線熔斷相應(yīng)的允許溫升值起決定作用，有些廠家采用的允許溫升值為100℃，這樣選出的接地線截面就小一些，而有些廠家采用的允許溫升值為200℃，這樣選出的接地線截面就大一些。我國的規(guī)范要求采用流經(jīng)接地線的短路電流、導(dǎo)體的熱穩(wěn)定系數(shù)、故障持續(xù)時間進行接地導(dǎo)體的截面計算，因此，常常會出現(xiàn)接地截面不符合制造商要求的情況。對此我國規(guī)范中應(yīng)就接地線的規(guī)格和尺寸作出相關(guān)規(guī)定。

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主營：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余（TMR）

結(jié)構(gòu)的zui現(xiàn)代化的容錯控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅(qū)動模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

MODICON AS-BDAP-218 TSX COMPACT

SANDVIK 431-350172-R22-?1 BTS TURNING INSERT HOLDER

2 SANDVIK 435-100151L47 LATHE TOOL HOLDERS,NEW

MODICON AS-B807-132 INPUT MODULE

SQUARE-D KAP362001212 3-POLE 200 AMP CIRCUIT BREAKER

100 SANDVIK 009242N49 SOLID CARBIDE INSERTS,TiN,NEW

4 SETS STRIPPIT OBROUND PUNCHES&DIES

WILSON 1.3125″THICK TURRET SQUARE PUNCH

DAYTON 2Z844 SINGLE PHASE AC GEARMOTOR,1/3HP

STRIPPIT 3.250 ROUND PUNCH&DIE SET,3-1/2″STYLE

STRIPPIT 3.0625″ROUND PUNCH&DIE SET,3-1/2″STYLE

STRIPPIT 3.500″ROUND PUNCH&DIE SET,3-1/2″STYLE

3 BANNER 26913 PHOTOELECTRIC SENSORS,NEW

29 WILSON THICK TURRET ROUND PUNCHES.203 THRU.500

9 SNR 6205.ZZ.J30 BALL BEARINGS,NEW

2 ALLEN-BRADLEY 509-COD SIZE-2 STARTERS,3-POLE

DAYTON 6K408D SINGLE PHASE AC MOTOR,1/2HP

STRIPPIT 2.1875 ROUND PUNCH&DIE SET,3-1/2″STYLE

STRIPPIT 1.505 X 1.448 SINGLE-D PUNCH&DIE SET

STRIPPIT CENTERING SET-UP PLUG,PUNCH&DIE

7 SETS STRIPPIT SINGLE-D PUNCHES AND DIES,MIXED

GAST 6AM-NRV-22A PNEUMATIC/AIR MOTOR

STRIPPIT 2.875″ROUND PUNCH&DIE SET,3-1/2″STYLE

28 SNR 6003EEC3A BALL BEARINGS,NEW

OMRON E5CK-AA1-302 MULTI-RANGE TEMPERATURE CONTROLLER

17 LEGACY 3/8″NPT AIR QUICK COUPLERS,A78620?-BG-GRA

20 SNR/SKF/NSK 6205 BALL BEARINGS,NEW

STRIPPIT 2.3750″ROUND PUNCH&DIE SET,3-1/2″STYLE

STRIPPIT 1.630 X 1.573 SINGLE-D PUNCH&DIE SET

STRIPPIT 2.9375″ROUND PUNCH&DIE SET,3-1/2″STYLE

4 FESTO MFH-5-1/4 PNEUMATIC SOLENOID VALVES,NEW

7 BUSSMANN LPS-RK-300SP LOW-PEAK FUSES,300AMP,NE?W

17 SNR 6013.ZZC3(J30)BALL BEARINGS,NEW

2 WILSON.191″&.238″THICK TURRET HEXAGON PUNCHES

STRIPPIT 1.9375″ROUND PUNCH&DIE SET,3-1/2″STYLE

2 STRIPPIT INDEXING TOOLS,1-1/4″STYLE,PUNCH&DIE

2 SETS STRIPPIT OBROUND PUNCHES&DIES,WILSON,1-1/4″

21 WILSON THICK TURRET RECTANGLE PUNCHES LOT

DAYTON 6K408BA AC MOTOR SINGLE PHASE,1/2HP,NEW

3 BUSSMANN LPS-RK-400SP 400AMP FUSES,600 VAC

STRIPPIT 3.375 ROUND PUNCH&DIE SET,3-1/2″STYLE

WILSON THICK TURRET OHM/OMEGA STAMP/EMBOSSING PUNCH

7 WILSON THICK TURRET SINGLE D/D PUNCHES&DIES.378+

STRIPPIT 2.182″ROUND PUNCH&DIE SET,3-1/2″STYLE

23 WILSON THICK TURRET SQUARE PUNCHES.125 THRU.344

4 SETS DOUBLE-D/DD PUNCHES&DIES,1-1/4″STYLE

3 SETS STRIPPIT OBROUND PUNCHES&DIES

STRIPPIT 2.000″ROUND PUNCH&DIE SET,3-1/2″STYLE

4 SETS DOUBLE-D/DD PUNCHES&DIES,5/8″STYLE

2 EDWARDS 871P-G1 ADAPTAHORN PANEL MOUNT HORNS,NEW

AMADA THICK TURRET 3″X 1/4″FORM UP LOUVER PUNCH

2 SETS STRIPPIT OBROUND PUNCHES&DIES,WILSON,1-1/4″

CROSCHOPP PM8014 DC MOTOR,99 WATT,24VDC,2300 RPM

AMADA THICK TURRET 1-3/4″X.500″FORM UP LOUVER PUNCH

3 FESTO PNEUMATIC SOLENOID VALVES,MFH-3,MF?H-5

STRIPPIT 2.750 ROUND PUNCH&DIE SET,3-1/2″STYLE

RELIANCE ELECTRIC P56H1795P AC MOTOR,1/2HP,FB5?6C

STRIPPIT 3.125″ROUND PUNCH&DIE SET,3-1/2″STYLE

3 WILSON THICK TURRET ROUND KEYED PUNCHES&DIES

A.O.SMITH 22246100 VARIABLE SPEED DC MOTOR,1/2HP,56C

5 WILSON THICK TURRET SINGLE D/D PUNCHES&DIES.437+

STRIPPIT 1.259 X 1.709 SINGLE-D PUNCH&DIE SET

STRIPPIT 3.437″ROUND PUNCH&DIE SET,3-1/2″STYLE

AMADA THICK TURRET 2-15/16″X5/8″FORM UP LOUVER PUNCH

100’DEARBORN CDT TGGT HIGH TEMPERATURE WIRE,10AWG