倍加福Z955齐纳式安全栅特征
•双通道
•AC版本
•在1μA工作电压0.9 V
•串联电阻18.18Ω
•***丝额定250mA
•DIN导轨安装
应用
齐纳势垒阻止了不可接受的高的转移能量从安全区域进入***区域。所述齐纳势垒中的齐纳二极管连接在反方向。二极管的击穿电压为零超过正常操作。如果超过这个电压,则到期在安全区内发生故障时,二极管开始导电,引起***丝要烧断了。齐纳势垒有交替极性,采用单端互连齐纳二极管是接地的。齐纳势垒可以用于这两种情况交流电压信号和直流电压信号。根据应用程序的不同,增加或减少本征安全参数适用于串行或并行连接。详细参数请参考齐纳证书的障碍。应用程序示例可在系统描述的齐纳障碍。
技术参数
General specificati***
Type AC version
Electrical specificati***
Nominal resistance 10 Ω
Series resistance ≤ 18.18 Ω
Fuse rating 250 mA
Hazardous area connection
Connection terminals 1, 2; 3, 4
Safe area connection
Connection terminals 5, 6; 7, 8
Working voltage
Supply loop ≤ 4.3 V
Measurement loop ≤ 0.9 V at 1 μA
Conformity
Degree of protection IEC 60529
Ambient conditi***
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Storage temperature -25 ... 70 °C (-13 ... 158 °F)
Relative humidity max. 75 % , without condensation
Mechanical specificati***
Degree of protection IP20
Connection screw terminals
Core cross-section max. 2 x 2.5 ... mm2
Mass approx. 150 g
Dimensi*** 12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch)
C***truction type modular terminal housing , see system description
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001