描述
在小區(qū)變電站變壓器處,PE線與N線連接并可靠接地,然后隨L、N線共同敷設(shè)直至所有用戶處,PE線沿途不允許有任何可斷開處,直接與所有配電箱外殼連接,最終到用戶插座。PE線是專門的保護(hù)線,引出后不允許再與N線相連,正常情況下PE線不通過負(fù)荷電流,與PE線相連的電氣設(shè)備金屬外殼不帶電位。在民用建筑中,家用電器(有金屬外殼的)大都有單獨(dú)接地極的插頭,采用TN-S供電,方便且安全。
產(chǎn)品承
保?證?全新原裝進(jìn)口,
保?證?安全準(zhǔn)時(shí)發(fā)貨,
保?證售后服務(wù)質(zhì)量,
優(yōu)勢價(jià)格,大量現(xiàn)貨。
主營DCS系統(tǒng)配件
機(jī)器人系統(tǒng)配件
大型伺服系統(tǒng)配件
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HEWLETT PACKARD A5599-70001 HP DLT8000 SCSI-HVD LOADER
HEWLETT PACKARD A6384-69002 HP HFW 8 PORT FIBER CARD
HEWLETT PACKARD A1809-60030 HP POWER CONTROL MODULE
HEWLETT PACKARD A1809-60017 HP PCBA BACKPLANE W/TRAY
HEWLETT PACKARD C3971A HP 5SI MAINTENANCE KIT
HEWLETT PACKARD C7200-60110 HP REMOTE MANAGEMENT CARD
HEWLETT PACKARD RG5-3027-000 HP LJ 8550 PW MODULE
MISC 155-0185-01 32Z PCI VIDEO BOARD DUAL
MISC 29-26372-00 TU80/81 POWER SUPPLY
NATIONAL INSTRUMENTS AT-GPIB-TNT NATIONAL INST. INTERFA
SUN 348-0036690B SUN SCSI DIFF-DUAL CONTROLLER
SUN 348-0036 SUN SCSI DIFF-DUAL CONTROLLER
SUN 501-1855 SUN IPI-2 DISK CONTROLLER MODU
COMPAQ 157301-B21 CPQ TL891DLX EXPANSION UNIT LVD
COMPAQ 157301-001 CPQ TL891DLX EXPANSION UNIT LVD
COMPAQ 306257-001 POWER SUPPLY WITH SWITCH
DEC H7266-AA DEC POWER REGULATOR UNIT
PRINTRONIX 109925-001 PRINTRONIX P6080 PCBA LOGIC
PRINTRONIX 140386-001 PRINTRONIX P6080 PCBA LOGIC
COMPAQ 190711-002 CL DRIVE INTERFACE BOARD KIT
HP A9794A HPTC CLUSTER SVR 900MHZ BASE SYSTEM
HP A9794B INTEGRITY RX2600 CLUSTER SERVER
DEC DLMT2-MA MULTISWITCH FAST ETHERNET HUB 924TX DLMT2-
DEC 54-24385-01 ALPHA SERVER 2100 4 SLOTT
DEC 54-23289-01 DAGGA-CA CLOCK CARD
DEC M7553 Q BUS INTERFACE
HEWLETT PACKARD C7707A HP DIGITAL SENDER 8100C *NEW*
SUN 370-6152 USB/FIREWIRE OPTION MODULE FOR SUNPCI III
DEC M7554-00 KDJ11-DA CPU 15MHz, 512-Kbyte RAM, 2 SLUs
ADIC FASTSTOR 22 DLT8000 LVD/SE.LR TAPE 40-5008-04
QUANTUM 6221710-21 ROBOTIC CONTROLLER W/ MEMORY
Hewlett Packard Compaq ProLiant DL580 G2 347905-001
HP A9795A 2 X 1.3GHZ ITANIUM CPUs “no HD,no Memory”
COMPAQ 102142-001 KBD/MSE/LAN/VGA PCI CONTROLLER
COMPAQ 157925-001 6-SLOT PCI RISER CARD
COMPAQ 154996-001 M2200 STRWS ENCLOSURE ONLY
COMPAQ 164098-001 CPQ HUB,12 PORT MANAGEMENT MODULE
COMPAQ 166861-001 PS/2 TWO-BUTTON MOUSE
COMPAQ 188407-001 PROLIANT 4500 POWER SU-
COMPAQ 190211-001 STORAGEWORKS 4354R ULTRA3 RACKMOUNtab
COMPAQ 175312-001 PASS-THROUGH MECHANISM
COMPAQ 231674-001 MSL5026 BACKPLANE WITH CAGE
PLC模塊,可編程控制器,CPU模塊,IO模塊,AI模塊,通訊模塊。AB/施耐德/ABB/GE/本特利/西屋/英維斯/霍尼韋爾/黑馬/FU克斯波羅
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