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CM-UFD.M33 | ABB 1SVR560730R3402 OEM Compliant | CHS Automation (K&J)
Source: | Author:kongjiang | Published time: 2026-05-14 | 9 Views | 🔊 Click to read aloud ❚❚ | Share:
CM-UFD.M33 power grid feeder monitoring relay is a multifunctional power grid feeder monitoring relay, which provides interface protection and is installed between renewable energy system and public power grid. The innovative relay ensures the stability of the power grid and is committed to preventing power failure. When the voltage or frequency value of the public power grid exceeds the allowable range, the equipment will change its state and disconnect the renewable energy system from the public power grid by sending signals to decoupling units (such as contactors, disconnectors or circuit breakers). Once the power grid is stabilized, the system can be automatically reconnected. CM-UFD.M33 provides a variety of monitoring functions, including overvoltage/undervoltage, overclocking/underfrequency, as well as frequency change rate (RoCoF) and vector offset monitoring functions, which are used to detect the main power loss event. The feeder monitoring relay meets G99 requirements.

General Information

Extended Product Type:CM-UFD.M33

Product ID:1SVR560730R3402

Catalog Description:

CM-UFD.M33 Grid feeding monitoring relay 3c/o,L-L= 0-550VAC,L-N=0-317VAC

Long Description:

The CM-UFD.M33  is a multi-functional grid feeding monitoring relay, which provides interface protection and is to be installed between a renewable energy system and the public grid. This innovative relay guarantees grid stability and seeks to prevent blackouts. If the voltage or frequency magnitudes of the public grid are outside the permited range, then the device changes status and acts to disconnect the renewable energy system from the public grid by sending a signal to  a decoupling unit (e.g. contactor, switch disconnector or circuit breaker). As soon as the grid is stable again, the system may automatically reconnected. The CM-UFD.M33  provides different monitoring functions including over-/undervoltage and over-/underfrequency  as well as rate of change of frequency (RoCoF) and vector shift monitoring  functions, which detect a loss of mains event. This grid feed monitoring relay complies to G99 requirements.