Surge Arrester
- Security against external power surges
- Corrosion-resistant and watertight protective housing
- Simple installation – screw in between cable entry and field device
- Can be retrofitted
- High function security
Application
The HAW59 device is used as a compact surge arrester for protection of signal cables and components.
Function
Overvoltage protection of an ungrounded twin-core cable and symmetric interfaces in field devices used in measurement and control instrumentation in accordance with NAMUR NE21, e.g. surges induced by remote lightning strikes or switch sequences.
Low and matched disconnection impedance between the individual protection steps within the device guarantee high compatibility with the system to be protected. |
