Extension Unit Rea 107 - ABB REA 10 Series Product Manual

Arc Protection Relay
Features:
• Loop-type or radial sensor fiber for arc
detection.
• Two high-speed semi-conductor outputs
for tripping.
• Signal relay activated by light detected by
the sensor fiber.
• Three RJ-45 ports for connecting the
REA 101 relay and extension units.
• Circuit-breaker failure protection. Delayed
light signal to REA 101, which opens the
higher-level circuit breaker.
• Self-supervision unit which monitors oper-
ating voltages and the sensor fiber loop.

Extension unit REA 107

The Arc Protection Module REA 107 is an
extension unit designed to be used together
with the central unit, Arc Protection Relay
REA 101.
The function of the REA 107 unit is to detect
light and to provide the REA 101 relay with
information about this.
The use of the extension unit allows the pro-
tection area to be extended and the protected
object to be divided into smaller areas.
Features:
• 8 lens-type sensors for arc detection
• 2 signal relays
• 2 RJ-45 ports for connecting REA 101
relay and other extension units
• Self-supervision unit that monitors operat-
ing voltages
• LED indicators for each sensor.
REA 10_
1MRS750929-MBG
7