Kumwell KZ01 .DT485 Series is a complex range of surge protection devices designed for protection of lines interface RS485 against surge effects. These surge protection devices are recommended for use in the Lightning Protection Zones Concept at the boundaries of LPZ 0A(B) – 1 according to IEC 62305. All types provide effective protection of connected equipment against common mode and differential mode surge effects according to IEC 61643-21. The nominal current of individual protected lines IN < 100 mA
These devices consist of gas discharge tubes, series impedance and transils. The number of protected pairs is optional (1-2). These devices are produced for nominal voltage of 6V. Maximum discharge current is 20kA (8/20) for type -L and 2kA (8/20) for type -R. The connection of protected lines is carried out by screw terminals for type -L and by RJ45 connectors for type -R.
| Technical Data | 1 | KZ01.DT485/1P.6-L | KZ01.DT485/1P.6-R | |
| 2 | KZ01.DT485/2P.6-L | KZ01.DT485/2P.6-R | ||
| Nominal voltage | UN | 6 V | ||
| Max. continuous operating voltage | UC | 7.2 V | ||
| Nominal current | In | 100 mA | ||
| D1 Total lightning impulse current (10/350) | Iimp | 5 kA | – | |
| D1 Lightning impulse current (10/350) line/PE | Iimp | 2.5 kA | – | |
| C2 Max. discharge current (8/20) | Imax | 20 kA | 2 kA | |
| C2 Nominal discharge current (8/20) | In | 1 kA | ||
| C2 Voltage protection level at In (8/20) | UP | 15 V | ||
| C3 Voltage protection level at 1kV/µs | UP | 9 V | ||
| Response time | tA | < 30 ns | ||
| Data rate | 1 Mbit/s | 10 Mbit/s | ||
| Series impedance per line | 1.5Ω | |||
| LPZ | 0-1 | |||
| Protection type | IP20 | |||
| Operating temperature range | -40°C to + 80°C | |||
| Recommended cable cross-section | 0.25 – 1.5 mm2 | |||
| Category tested acc. to IEC 61643-21 | A2, B2, C2, C3, D1 |
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