Zener barriers provide cost saving Ex-protection for various applications in process automation systems. The amount of energy transferred to the hazardous location is limited to a safe level incapable of igniting the explosive atmosphere.
Z-system zener barriers from Pepperl+Fuchs are directly mounted on a 35 mm DIN-Rail. Through accessories, the required grounding can be done directly on the DIN mounting rail.
- Fast mounting on the DIN-rail
- Grounding directly connected with DIN-rail
- Separation of field loop by removing the fus
Z-system zener barriers are available with high density up to 2 channels / 12,5 mm width. Variants with field replaceable fuses provide a convenient means of disconnecting or open-circuiting the instrument loop without interfering with the wiring, making commissioning and maintenance operations much easier.
General specifications
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| 1-channel, DC version, positive polarity, Working voltage 26.5 V at 10 µA, Series resistance max. 342 Ω + 2 V, Fuse rating 50 mA, DIN rail mounting, Current limiting, Number of channels: 1-channel, Type: DC, positive, Working voltage: max. 26.9 V , 26.5 V at 10 µA |
Z728.CL相关技术参数：
| General specifications |
| Type |
DC version, positive polarity |
| Electrical specifications |
| Nominal resistance |
300 惟 |
| Series resistance |
max. 342 惟 +2聽V |
| Fuse rating |
50 mA |
| Hazardous area connection |
| Connection |
terminals 1, 2 |
| Current limit |
45 mA |
| Safe area connection |
| Connection |
terminals 7, 8 |
| Working voltage |
max. 26.9 V , 26.5 V at 10 碌A |
| Conformity |
| Degree of protection |
IEC 60529 |
| Ambient conditions |
| Ambient temperature |
-20 ... 60 掳C (-4 ... 140 掳F) |
| Storage temperature |
-25 ... 70 掳C (-13 ... 158 掳F) |
| Mechanical specifications |
| Degree of protection |
IP20 |
| Connection |
screw terminals , max. core cross-section 2 x 2.5 mm2 |
| Mass |
approx. 150 g |
| Dimensions |
12.5 x 115 x 110 mm (0.5 x 4.5 x 4.3 inch) |
| Mounting |
on 35 mm DIN mounting rail acc. to EN 60715:2001 |
倍加福齐纳式安全栅模块产品型号参考：
Z705 Z779.F Z887 Z966.F
Z710 Z779.H Z888 Z966.H
Z713 Z779.H.F Z896 Z967
Z715.F Z786 Z905 Z978
Z722 Z787 Z910 Z040
Z728 Z787.F Z915 Z041
Z728.CL Z787.H Z915.1K Z042
Z728.F Z787.H.F Z928 Z810.CL
Z728.H Z788 Z954 Z813
Z728.H.F Z788.H Z955 Z857
Z731 Z788.R Z960 Z864
Z755 Z789 Z960.F Z865
Z757 Z796 Z961 Z865.F
Z764 Z810 Z961.F Z872
Z765 Z822 Z961.H Z879.F
Z765.F Z828.H.F Z964 Z879.H.F
Z772 Z878 Z965 Z886
Z778 Z888.H Z966 Z887.F
Z887.H.F Z922 Z715.1K Z715
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