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STANDALONE RELAY Features:

• Over and under voltage protection, 10 minutes
average value

MULTI-FUNCTIONAL GRID • Over and under frequency monitoring

FEEDING MONITORING RELAY
• Monitoring of voltage and frequency in single and
three phase mains (2-wire, 3-wire or 4-wire AC
systems)

• Integrated management of redundancy function

• True RMS measuring principle

The ABB Monitoring Relay offers a
• Two level threshold settings for voltage and frequency
comprehensive set of features designed to
ensure the stability and safety of distributed • Modbus output for remote site indication
generation systems connected to the public
grid. With the ability to monitor voltage and • Adjustable threshold values and tripping delays
frequency in single and threephase mains
across various AC systems, it provides crucial • Error memory for up to 99 entries
protection against over and under voltage (incl. cause of error, measured value, relative time
conditions, as well as any changes in grid stamp)
frequency. Featuring ABB Ability™ connectivity,
password protection and a multi-line, backlit • Test function
LCD display, this enables a user-friendly
• 3 control inputs for feedback signal, remote trip
experience. Additionally, monitoring of ROCOF
(rate of change of frequency) and vector
• 3 c/o (SPDT) contacts
shift can be configured. This relay comes
preconfigured in accordance with G59/3
and G83/2 standards to ensure seamless
integration, and is also Australian utility
approved.

Measuring Range Control Voltage
Part No.
(V AC) (V AC/DC)
L-L 0-540V, L-N 0-312V 24-240 CM-UFD.M33

L-L 0-540V, L-N 0-312V
24-240 CM-UFD.M33M
+ MODBUS

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