3000/02 SER 3000 CPU

发布时间:2019-11-21
  1.额定剩余动作电流I△n的选择
    单机配用时I△n>4IX;
    分支路配用时I△n>2.5IX,同时还要满足*一台电动机运行时I△n>4IX(此IX按电动机运行时的值取);
    主干线或全网配用时I△n>2.IX.
    以上各式中:I△n-—额定剩余动作电流mA;
    IX—线路或电动机实测或是经验值的泄漏电流mA;.
    2.额定剩余不动作电流I△no的值:
    I△no=1/2I△n
    3.剩余电流动作继电器I△n的值:
    目前剩余电流动作继电器(电磁式)I△n的值有100mA、200mA和500mA几种.能引燃起火的电弧电流通常在500mA以上.单就预防电气火灾而言,取I△n为500mA,I△no为250mA为宜.
    4.级间保护配合的动作电流和动作时间:
    动作电流和动作时间的选择应考虑上下级保护的协调配合.从选择性、可靠性出发,按分级保护,下级与上级应有选择性的原则来设计.动作电流和动作时间应符合下列规定:

3000/02 SER 3000 CPU
Bristal Babcock Electric Pressure Switch Model 506008Wago 788-312 24V Relay DIN Rail Modules - (5) in Lot

30,Laser Machine Micro Limit Sensor Auto Switch,KW11

314C-2DP, 6ES7 314-6CG03-0AB0, Plus a 128kB MMC

UE Delta Pro 24 Series Air Differential Pressure Switch

UE Delta-Pro 24-14705, Range 1-9 PSID up to 5A 250 VAC

UE Delta Pro 24 Series Air Differential Pressure Switch

UE Delta-Pro 24-14706, Range 4-43 PSID up to 5A 250 VAC

Water Level Sensor Liquid Float Switch Tank Pool Steel

Euchner Precision Limit Switch 5 pin micro connector
 
USED LESS THAN THREE CYCLES 4 available

New Allen Bradley 592-COV16 Overload Relay NIB

Allen Bradley 1784-PCMK/A, with 1784-PCM5 Cable

Allen Bradley PLC Terminal

Dual Digital F/C PID Temperature Control Controller

Granville-Phill?ipps Micro-Ion Gauge 20354014-TD-T

MKS Baratron Transducer #852B13TCA2GC

Allen-Bradley components lot of (3)

M611 Brown Boveri Motor Protection Switch M611.11-6A 

PEPPERL & FUCHS NJ20-U10-E2 PROXIMITY SWITCH INDUCTIVE

Horiba STEC MFC SEC-4400 Lot of (5)

Liquid Water Level Sensor Horizontal Float Switch

Liquid Water Level Sensor Horizontal Float Switch

Liquid Water Level Sensor Right Angle Float Switch 


上一篇:伊犁易福门接近传感器(销售)有限...
下一篇:VFS4310-4DZB