The protection device is a unique unit providing a level of protection for field-mounted transmitters that is far in excess of the optional transient protec-tion facilities available from transmitter manufactors - without involving any additional wiring, conduit modifications or others expensive extras. The protection device is used with 2-wire field devices.
- Applicable at the LPZ transition point 0B-2 and higher
- Easy mounting directly
- Maximum protection through inline installation
- Low impedance series connection avoids signal degradation of the loop
- Intrinsically safe and flameproof
- Test standard: IEC 61643-21 / EN 61643-21
- Earthing via metal housing
- Length of connecting line: 200 mm
| IEC category | D1 / C2 / C1 / C3 |
| Nominal voltageUN | 24 V |
| Max. continuous operating voltage DCUc | 32 V= |
| Nominal currentIL | 1,5 A |
| D1 lightning impulse current (10/350 µs) per lineIimp | 1,0 kA |
| C2 nominal discharge current (8/20 µs) totalImax | 10 kA |
| Protection level line-line at In C2Up | - V |
| Protection level line-earth at In C2Up | - V |
| Series resistance per line | 0,5 Ω |
| Capacitance wire-wireC | ≤ 400 pF |
Additional Information
| Capacitance, line-earthC | ≤ 20 pF |
| Max. operating frequency line-linefG | 14 MHz |
| Operating temperature rangeTU | -40 - +80 °C |
| Terminal input/output | Screw/line 1,5 mm² |
| Conductor cross section single wire | 0,08-2,5 mm² |
| Conductor cross section fine stranded | 0,08-1,5 mm² |
| Length of connecting line: 200 mm | 200 mm |
| Enclosure material / colour | stainless steel |
| Degree of protection (IEC EN 60529) | IP 66/67 |