330730-040-00-00

   Bently Nevada 330730-040-00-00

咨询热线---1775062626

屏蔽层、接地线和大地有可能构成闭合环路，在变化磁场的作用下，屏蔽层内又会出现感应电流，通过屏蔽层与芯线之间的耦合，干扰信号回路。若系统地与其他接地处理混乱，所产生的地环流就可能在地线上产生不等电位分布，影响PLC内逻辑电路和模拟电路的正常工作。PLC工作的逻辑电压干扰容限较低，逻辑地电位的分布干扰容易影响PLC的逻辑运算和数据存储，造成数据混乱、程序跑飞或死机。模拟地电位的分布将导致测量精度下降，引起对信号测控的严重失真和误动作。

　　安全地或电源接地：将电源线接地端和柜体连线接地为安全接地。如电源漏电或柜体带电，可从安全接地导入地下，不会对人造成伤害。

　　系统接地：PLC控制器为了与所控的各个设备同电位而接地，叫系统接地。接地电阻值不得大于4 Ω，一般需将PLC设备系统地和控制柜内开关电源负端接在一起，作为控制系统地。

SHEAVE PULLEY 6 5SV7-1 SF OD 7" NNB

ROBINAIR YELLOW 1/4"FFLX1/4"FFL CHARGING HOSE 31036

ASHCROFT 0-30PSI PRESSURE GAUGE 3-1/2" TYPE-1009 NIB 1JA42317-032

INDUSTRIAL BRAND OA PRE-CUT TAB SHIM SET

SAIT CUT 8X3/32 TYPE-1 7600RPM GRINDING WHEEL A24R-BF

LUFKIN MACHINIST SHELF LEVEL W/ BOX NO. 59

TYCO RAYCHEM OUTDOOR HVT MOD. KIT S4-346-SKIRTS / 291188-000 NIB

HEXAGON THREAD DIE 2-3/4"-16

B-LINE 3100-1 1/2'' PIPE CLEVIS HANGER

UNION BUTTERFIELD 1 NPTF 11-1/2" G 5-FLUTE HAND TAP 753

ROTOR TOOL ?? 3/8" DRIVE ANGLED PNEUMATIC NUT RUNNER; BODY 10" OAL

ATLAS COPCO 1/2IN DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER ETD DS9-150-13S

PRECISION JOBBER R18 #2 HSS BLACK OXIDE 018002 SET OF 12 NIB

CLEVELAND 1/2" - 20 NF HS G H5 H1396 4 FLUTE TAP

UNION BUTTERFIELD 1-1/8-7" H4 4F PLUG HAND TAP 1500 / 1010183 NIB

COLUMBUS MCKINNON 3/8" WIRE ROPE CLIP M248 NIB

3/8" ROUND COLLET 5C

MORSE 1-1/4" 2F MILL

VITA NEEDLE 16 GUAGE 1/2 OILER NEEDLE LOT OF 5

GTD GREENFIELD 2 4-1/2 NC 4-FLUTE HAND TAP

NYTD 1/2" FISHTAIL TWIST DRILL 6 IN BAG, NIB, 11288AA

UNION BUTTERFIELD 5/16X3/8 END MILL 5110370 NIB

LENOX 125X3/8 NEO WELDED BAND .025 6HR

GREENFIELD TAP GTD 4 - 40 NC HS 2 FLUTE LOT OF 5

DE 2-FLUTE 3/8DIAX3/8SHR END MILL NIB

LOVEJOY 3J 1/2" N/KW FLANGE COUPLING 685144 / 36114 NIB

ROTOR TOOL S01PR6M-012 PISTOL GRIP PNEUMATIC NUTRUNNER

BROWNING 3/4" SINGLE GROOVE SHEAVE PULLY BK-52-H

WIDELL 2-1/4" -14 HEXAGON THREAD DIE 78406

ROTOR TOOL S01PR6M-012 PISTOL GRIP PNEUMATIC NUTRUNNER

BROWNING 3/4" SINGLE GROOVE SHEAVE PULLY BK-52-H

WIDELL 2-1/4" -14 HEXAGON THREAD DIE 78406

REGAL 3/4" SET SCREW E.M.T. COUPLING 712 LOT OF 22

INGERSOLL-RAND BASKET ASSEMBLY 43441-1 *NEW*

BOSTON GEAR 1/34IN. x 2IN. OAL FC20-1 *NEW IN BOX*

12MM / 1.25 4-FLUTE HAND TAP

SYNTEX 10PSI 48"X102" AIR BAG LEVEL-4(L4W) HD-1 AAR

PRECISION TWIST DRILL 1-15/32 TAPER SHANK 20130 *NEW*

RITE-HITE STEEL SLEEVE 51440 NIB

1/4" ROUND COLLET 5C

OTD 11-1/2NPT SQUARE BOLT DIE

MARTIN BUSHING SF2 3/8 NIB

1/2"DIA HSS DOUBLE ENDED MILL 3D

NATIONAL 2-FLUTE 1-11/64 13-1/4" HS TWIST DRILL SHANK

PROTO 1-7/16, 1-3/8 DOUBLE OPEN END WRENCH 3060 NNB

INDUSTRIAL SCIENTIFIC PPM-SULFUR DIOXIDE METER S0261

GTD 1/2-13 NC HS G H3 M2900P NIB

HARDINGE COLLET 1/4 2J

LA CROSSE SIZE 10 YELLOW PACK LITE 13" OVERSHOES

NHB TOOL SIZE 5/8 JL DRILL NHB20550

HNL J-KOREA CB7CU-2

NORTH AMERICAN M12 X 1.75 HS 4-FLUTE HAND TAP NIB GD-6 / 10Y9

3-FLUTE 5/32DIAX3/8SHK DE 2-FLUTE ENDMILL EE5-1 / 72208 NIB

FESTO 16. PC LINEAR SLIDE REPAIR KIT DGP-25-99V-A-B *NEW IN BOX*

MINCO SENSOR 57PEZ24-TT111PE?1AC S4 W/ JUNCTION BOX

GARDNER SPRING 5 IN BAG COMPRESSION SPRING 36019G NIB, LOT OF 7

DAWOO SHIM D700334 NIB, 4 IN BAG

MONARCH RUBBER COMPANY 254 X 152 X 159 SMOOTH TREAD FORKLIFT TIRE 10 X 6 X 6 1/4

LH 1"-8 NC HEXAGON THREAD DIE

GREENFIELD 5/16" HSS STRAIGHT FLUED HAND REAMER NO. 840 S2720

TOKUDA IONIZATON VACUUM GAUGE HFT-7, FRONT PANEL CRACKED

WIDELL 1 1/4-10+.005 HSS

TRW PUTNAM HS 1/4" - 5/8" DOUBLE ENDED END MILL 94859 NIB

LINEMEN'S BLANKETS 40KV GNP-2 / 95-FLEC

MARTIN 14 TOOTH 3/4" SPROCKET BORE 40BS14HT LOT OF 2 NIB

USA PLUG HAND TAP 3/4 10 NC GH3 HSS

ATLAS COPCO VALVE KIT 4210 3387 90 *NEW*

STANLEY 1/2IN DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER E30LSRA3XG-17

BRIDGEPORT 1/2" CONDUIT NIPPLE 1102 NIB

ASD 7/8 ODF SUCTION FILTER-DRIER 45S7-VV NIB

STANLEY 3/8'' PNEUMATIC NUT RUNNER, MISSING TAG

STANLEY 3/8" DRIVE RIGHT ANGLE ELECTRONIC NUTRUNNER E30LSRA1AXG-17 *OPTION #1*

TITAN TWIST DRILL SIZE-N4 CS10004

JARVIS HIGH SPEED TAP M10 x 1.5 D11 1LG S/B JARFLO NIB

40FT. 2-1/2"X3"X3-1/2?" CHAIN NIB

WIDELL 3-5/16-12 HSS 8-FLUTE TAP GH-5

BAY-STATE 1/2 L 4 THREAD HS TAP