REA 107 is an extension unit designed to be used together with the arc protection relay REA 101. The function of the unit is to detect light and to provide the REA 101 relay with information about this. The use of the extension unit allows the protection area to be extended and the object to be divided into smaller areas.
- Eight lens type sensors for arc detection
- Two signalling relays
- Two RJ-45 ports for the connection to a REA 101 relay and/or other extension units
- Self-supervision unit monitoring operating voltages
- LED indicators for each sensor