¥¥¥ 1B30023H01 西屋 ¥¥¥
¥¥¥ 1B30023H01 西屋 ¥¥¥
针对DCS厂家不同要求和行业规范规定不一致的情况,结合工程项目实际经验,DCS接地系统的设计与施工建议如下考虑:
①当电厂电气接地网接地电阻≤4Ω时,可将DCs总接地板以单点方式接至电气接地网,DCS系统接地点与电气接地极距离不小于5Ω,与防雷接地系统接地极距离不小于10Ω。
②当电厂电气接地网接地电阻值较大或DCS厂家有特殊要求时,应立设置DCS接地系统,接地电阻应小于O。5Ω或按DCS厂家要求确定。
③本安齐纳型安全栅接地系统,宜立设置,接地电阻小于1Ω,接地总干线的连接电阻小于0。1Ω。本安接地极宜保持立,且与电厂电气接地网或其他仪表系统接地网之间的距离不宜小于5Ω。
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卍卍卍 联系人:苏烈格
卍卍卍 企业:3004859263
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RED LION CONTROLS CUB30000
LOT OF 3 RED LION CONTROLS CUB3T310
RED LION MINIATURE COUNTER CUB1XP00 (AS IS)
LOT OF 5 RED LION ACCESSORIE SPARE UNIT ICAXP000
RED LION CONTROLS SKT10000
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LOT OF 3 RED LION CONTROL VCMF0000
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RED LION 2300200 SOCKET
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OHMITE RESISTOR P-2500/400/F10-?T2
OHMITE RHEOSTAT N-700/300-F10-T?2
OHMITE RHEOSTAT P-500/100-F10-T?2
OHMITE RHEOSTAT N-300/700-F10T2
OHMITE 47249 RESISTOR 725 OHMS
LOT OF 34 OHMITE 0207 RESISTOR
OHMITE 212-8 8308 20A 150VAC
OHMITE RLS10K 10K OHMS 150W
OHMITE RNS100
OHMITE RNS1K2
OHMITE PFE5KR670
OHMITE RKS25R
OHMITE RLS100E
OHMITE 0531 15OHMS
OHMITE VT8N
OHMITE 0531 RHEOSTAT 15OHMS (AS PICTURED)
OHMITE PFE5K4R50
LOT OF 25 OHMITE B8J5K0
LOT OF 25 OHMITE 0E10G5
OHMITE 1117 RHEOSTAT 1K OHM 75 W
OHMITE RLS50R RHEOSTAT
OHMITE RLS15R MODEL L RHEOSTAT 15WATTS , 15OHMS
OHMITE 0463 RHEOSTAT 10,000OHMS
OHMITE RKS5K0E
OHMITE RLS50R RHEOSTAT 50 OHM
OHMITE RKS7K5 RHEOSTAT 100W 7500OHM
OHMITE RLS3K0
OHMITE 0655
OHMITE RNS75R RHEOSTAT
OHMITE VTG2A5 VARIABLE
LOT OF 24 OHMITE B20J2K0
OHMITE RESISTOR 50OHMS RKS50R
OHMITE RLS15RE
OHMITE RLS350
OHMITE 0663
LOT OF 12 OHMITE B20J250
OHMITE RLS5R0 RHEOSTAT
OHMITE RGS25R RHEOSTAT
OHMITE 0322 MODEL J RHEOSTAT
OHMITE RKS1K5 RHEOSTAT
OHMITE 2331A POWR-RIB RESISTOR 2.20OHMS
OHMITE POWR-RIB RESISTOR PFE5K1R60
OHMITE 0454 RHEOSTAT 400 OHMS
OHMITE RKS100 RHEOSTAT 100OHMS
OHMITE 1117 RHEOSTAT
OHMITE 0461 RHEOSTAT POTENTIOMETER 5000
OHMITE RLS1R0 RHEOSTAT
OHMITE 5000OHMS RHEOSTAT RKS5K0
OHMITE PFE5KR670
OHMITE 0528 RHEOSTAT 5 OHMS
OHMITE 0532 RHEOSTAT 25 OHMS
OHMITE 5106 HAND WHEEL POINTER KNOB
LOT OF 14 OHMITE B8J5K0
OHMITE 111-10 ROTARY TAP SWITCH
OHMITE RHEOSTAT U-500-F11
OHMITE RNS2K5 RHEOSTAT
OHMITE 0332 RHEOSTAT
OHMITE 150R RESISTOR 25 OHMS
OHMITE RKS2K0 2000 OHM MODEL K RHEOSTAT
OHMITE RKS10R 10 OHM RHEOSTAT
LOT OF 16 OHMITE 1749 B12J-5K0
LOT OF 16 OHMITE B205300 20WATTS, 300 OHMS
LOT OF 12 OHMITE B12J400
OHMITE RJS5K0E
OHMITE RJS25K
OHMITE RLS750
OHMITE RNS300
OHMITE 0323 ( RJS300) RHEOSTAT MODEL J 50WATT, 300 OHMS
LOT OF 19 OHMITE 1850 WIREWOUND 20WATTS, 50K OHMS
OHMITE 0452 RHEOSTAT 200 OHMS
OHMITE 6533 RHEOSTAT COUPLING
OHMITE 212-6 8511