| IEC test classification | C1 |
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| C2 |
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| C3 |
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| D1 |
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| VDE requirement class | C1 |
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| C2 |
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| C3 |
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| D1 |
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| Nominal voltage UN | 24 V DC |
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| Maximum continuous voltage UC | 28 V DC |
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| Rated current | 450 mA (45°C) |
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| Operating effective current ICat UC | ≤ 5 µA |
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| Residual current IPE | ≤ 5 µA (with PT 2X2-BE) |
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| ≤ 1 µA (with PT 2X2+F-BE) |
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| Nominal discharge current In(8/20) µs (line-line) | 10 kA |
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| Nominal discharge current In(8/20) µs (line-earth) | 10 kA (with PT 2X2+F-BE) |
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| 10 kA (with PT 2X2-BE) |
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| Pulse discharge current Iimp(10/350) µs | 2.5 kA (with PT 2X2-BE) |
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| 2.5 kA (with PT 2X2+F-BE) |
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| Total discharge current Itotal(8/20) µs | 20 kA |
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| Nominal pulse current Ian (10/1000) µs (line-line) | 25 A |
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| Voltage protection level Up(line-line) | ≤ 150 V (C1 - 1 kV/500 A) |
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| ≤ 165 V (C2 - 10 kV / 5 kA) |
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| ≤ 450 V (C2 - 10 kA) |
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| ≤ 50 V (C3 - 25 A) |
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| Voltage protection level Up(line-earth) | ≤ 150 V (C1 - 1 kV/500 A) |
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| ≤ 700 V (C1 - 1 kV / 500 A with PT 2X2+F-BE) |
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| ≤ 165 V (C2 - 10 kV / 5 kA) |
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| ≤ 900 V (C2 - 10 kV / 5 kA with PT 2X2+F-BE) |
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| ≤ 450 V (C2 - 10 kA) |
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| ≤ 1000 V (C2 - 10 kA with PT 2X2+F-BE) |
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| ≤ 50 V (C3 - 25 A) |
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| ≤ 800 V (C3 - 25 A with PT 2X2+F-BE) |
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| Voltage protection level Up(line-signalground) | ≤ 150 V (C1 - 1 kV/500 A) |
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| ≤ 150 V (C1 - 1 kV / 500 A with PT 2X2+F-BE) |
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| ≤ 165 V (C2 - 10 kV / 5 kA) |
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| ≤ 165 V (C2 - 10 kV / 5 kA with PT 2X2-BE) |
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| ≤ 450 V (C2 - 10 kA) |
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| ≤ 450 V (C2 - 10 kV / 5 kA with PT 2X2-BE) |
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| ≤ 50 V (C3 - 25 A) |
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| ≤ 50 V (C3 - 25 A with PT 2X2-BE) |
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| Response time tA(line-line) | ≤ 500 ns |
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| Response time tA(line-earth) | ≤ 500 ns |
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| Input attenuation aE, sym. | typ. 0.3 dB (≤ 13 MHz/100 Ω) |
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| Cut-off frequency fg (3 dB), sym. in 100 Ohm system | typ. 70 MHz |
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| Capacity (line-line) | typ. 23 pF |
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| Resistance in series | 2.2 Ω ±10 % |
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| Max. required back-up fuse | 500 mA (T) |
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