西门子保护器7sj6112-4eb02-3hb0现货   询价
multifunction protective relay with backlit text display, 4 x 20 characters, 7 programmable led, case 1/3 19", 8bi, 8bo, 1 watchdog contact phase current transformer 1a, sensitive earth current transf. supply voltage: dc 60v to 125v, trigg.level binary input dc 19v flush mounting case, screw terminals (direct wiring/ring lugs) language english, 50/60hz, iec/ansi, region world, (language changeable) no system port digsi 4/modem port (on rear of device) port c digsi 4, rs485 metering: peak values, average meter, min/max-values, fault recording functionality: toc+iee+ sensitive ground fault phase overcurrent (50/51) i>,i>>,ip,reverse interlocking, independent of phase rotation ground overcurrent (50n/51n) ie>, ie>>, iep,sensitive ground protection iee (50n), overload protection with 2 time constants (49), trip circuit supervision (74tc) breaker failure protect. (50bf) cold load pickup, inrush blocking, negative sequence (46), lock out (86) motor protect.: undercurr. (37) negative sequence (46), start up supervision (48), start up blocking/lockout(66/86 without auto-reclosure
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过程控制系统代表着过程控制领域的高效率。凭借该系统，可实现工艺辅助设备、上游和下游生产的过程自动化控制，从而为工厂提供诸多优势。从小型实验室系统到大型工厂控制网络，simatic pcs 7 均可提供极其灵活的可扩展能力，大大降低了工厂的总拥有成本
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