ABB 3BHT300036R1
咨詢熱線--17750626260
干擾類型通常按干擾產(chǎn)生的原因、噪聲的干擾模式和噪聲的波形性質(zhì)的不同劃分。其中:按噪聲產(chǎn)生的原因不同,分為放電噪聲、浪涌噪聲、高頻振蕩噪聲等;按噪聲的波形、性質(zhì)不同,分為持續(xù)噪聲、偶發(fā)噪聲等;按聲音干擾模式不同,分為共模干擾和差模干擾。共模干擾和差模干擾是一種比較常用的分類方法。共模干擾是信號對地面的電位差,主要由電網(wǎng)串入、地電位差及空間電磁輻射在信號線上感應(yīng)的共態(tài)(同方向)電壓送加所形成。共模電壓有時較大,特別是采用隔離性能差的電器供電室,變送器輸出信號的共模電壓普遍較高,有的可高達(dá)130V以上。共模電壓通過不對稱電路可轉(zhuǎn)換成差模電壓,直接影響測控信號,造成元器件損壞(這就是一些系統(tǒng)I/O模件損壞率較高的原因),這種共模干擾可為直流、亦可為交流。差模干擾是指用于信號兩極間得干擾電壓,主要由空間電磁場在信號間耦合感應(yīng)及由不平衡電路轉(zhuǎn)換共模干擾所形成的電壓,這種讓直接疊加在信號上,直接影響測量與控制精度。
IDEC RELAY LOT OF 4 21115-A3
OMRON 250VAC RELAY LOT 5 G3R-202SN
AGASTAT 1-10 MIN TIME DELAY RELAY NNB 7022VF 104571
OMRON RELAY SOCKET BASE LOT OF 4 PYF08M
SIEMENS CONTROL RELAY LOT OF 2 8 TH 80 22-0A
ALLEN BRADLEY RELAY WITH BASE LOT OF 10 700-HF32A1-4 101310
CUTLER HAMMER DPDT 110VDC COIL RELAY SER.A2 NIB D5PR2A1 102625
IDEC DC24V RELAY LOT OF 4 RH2B-UL
ALLEN BRADLEY 110/120V 10A RELAY 700-F400A1 SER. B *LOT OF 5*
RELIANCE ELECTRIC CONTACT RELAY 76624-S 101178
PHILIPSECG RELAY SOCKET BASE LOT OF 2 RLY9113
ALLEN BRADLEY ELECTRICALLY HELD RELAY 700-R000A1 SER B
ALLEN BRADLEY 10A 300/400VAC RELAY BLOCK SER.A LOT OF 3 700-HN202
ALLEN BRADLEY 24V 7A RELAY LOT OF 6 700-HC24Z24 SER D
ALLEN BRADLEY 10A 120V RELAY WITH BASE LOT OF 2 700-HA32A1 SER D 101315
ALLEN BRADLEY RELAY LOT OF 5 700-HA33A1 SER A
IDEC 24VDC RELAY LOT OF 3 RH4B-UL
OMRON 110/120VAC RELAY LOT OF 5 LY1 / IEC255
NCC CONTROLS SOLID STATE TIMER T2K-5-461
SIEMENS SIRIUS 230VAC COIL 10A CONTROL RELAY 3RH1131-1AP00
ALLEN BRADLEY TIME DELAY RELAY 700-HT12AA1
IDEC DC 24 V RELAY LOT OF 2 RY2S-U 99804
MARS CONTROL CO. RELAY T1L-60-61
ALLEN BRADLEY 120 VAC RELAY WITH BASE LOT OF 2 700-HA32A1 SER A 101316
SPC TECHNOLOGY 300V 10A RELAY SOCKET BASE LOT OF 2 SMS2-32
YOUNG ELECTRONICS RELAY SOCKET BASE LOT OF 3 DS-8
MAGNECRAFT 120 VAC RELAY W78ACSX-5
OMRON 24VDC RELAY LOT OF 6 G2R-2-SN
AMF 5.8MADC 2A 120VAC RELAY R10-E1-Y2-J2.5K
ALLEN BRADLEY 24V DC 15A RELAY LOT OF OF 3 700-HB33Z24-3-4 SER E
FUJI ELECTRIC 24VDC 5A RELAY LOT OF 3 HH54PU-FL
OMRON TIMER H3BH-8
ALLEN BRADLEY 120VAC CONTROL RELAY SER.A LOT OF 4 700-HK36A1
HOURS INDICATOR NUMERICAL COUNTER 621-07-3 102951
ALLEN BRADLEY 12VDC RELAY SER.C LOT OF 2 700-HA32Z12
AROMAT 10AMP RELAY LOT OF 5 HL2-M-DC24V AP5222K 101288
CUTLER HAMMER 600V 20A RELAY D15CR40 SER B1
IDEC RELAY SOCKET BASE LOT OF 5 SR3P-06
RELECO 10A 380V-AC1 RELAY LOT OF 2 C2-A20 T
POTTER & BRUMFIELD 120V RELAY LOT OF 4 KHAU-17A16-120
AMF 120VAC 3A RELAY LOT OF 6 KHU17011
OMRON RELAY SOCKET BASE LOT OF 5 P7SA-14F-ND
ALLEN BRADLEY 12VAC RELAY SER.A LOT OF 2 700-HA32A12
TELEMECANIQUE 10A OVERLOAD RELAY LR2D3363
ALLEN BRADLEY 120V 10A RELAY LOT OF 4 700-HA33A1 SER D
POTTER & BRUMFIELD 120V RELAY LOT OF 5 KUP-14A35-120
OMRON 110/120VAC RELAY LOT OF 10 MY4
MIDTEX 12 VDC RELAY LOT OF 2 157-23B200
ALLEN BRADLEY 120V 15A RELAY LOT OF 5 700-HB32A1 SER D
SIEMENS OVERLOAD RELAY 50-63 A 3UA58 00-2P
ALLEN BRADLEY 1.0-2.9A CLASS-10 OVERLOAD RELAY 193-A1D1 99705
IDEC AC120V RELAY LOT OF 6 RR3PA-U
ECG 10 AMPS 120VAC 50/60HZ RELAY LOT OF 2 RLY1045
KUHNKE 120VAC RELAY UF3X-24VDC N
POTTER & BRUMFIELD 120V RELAY LOT OF 4 KRP11AG
ALLEN BRADLEY 24VDC RELAY 700-HB33Z24-1-4 SER A
ALLEN BRADLEY MINIATURE RELAY 120V AC NIB 700-HK32A1 SER.B
NCC CONTROLS SOLID STATE TIMER T1K-5-461
CRYDOM SOLID STATE RELAY 100V 20A OUTPUT 3.5-32V INPUT D1D20
ALLEN BRADLEY 120V 7AMP RELAY LOT OF 6 700-HC24A1 SER D
OMRON 24VDC RELAY LOT OF 10 G2R-2-SD