Page 26 - photovoltaic-2019-V19

STANDALONE RELAY-ABB

CM-UFD.M33 - VOLTAGE BASED

The CM-UFD.M33 is a multifunctional grid feeding monitoring relay.
It provides different monitoring functions to detect Over and Under
voltage (10 minutes average value, voltage increase and decrease
protection) as well as any changes in grid frequency (Frequency
increase and decrease protection).

The device is connected between the distributed generation and the
public grid in order to disconnect the distributed generation in case of
problems (e.g unstable grid) faults or maintenance on the grid. Additionally,
monitoring of ROCOF (Rate of change of frequency) and vector shift can
be configured.

CM-UFD.M33

Features:
- Monitoring of voltage and frequency in single and three phase mains (2-wire, 3-wire or 4-wire AC systems).
- Pre-settings in accordance with G59/3 and G83/2.
- Integrated management of redundancy function.
- Multiline, backlit LCD display.
- True RMS measuring principle.
- Over and Under voltage, 10 minutes average as well as Over and Under frequency monitoring.
- Two level threshold settings for Over/Under voltage and Over/Under frequency.
- ROCOF (Rate of Change of frequency) monitoring and vector shift configurable.
- Interrupted natural detection.
- All threshold values and tripping delays adjustable.
- Error memory for up to 99 entries (incl. cause of error, measured value, relative timestamp).
- Test function.
- Password setting protection.
- 3 control inputs, e.g for feedback signal, Remote trip.
- 3 c/o (SPDT) contacts.
- Various certifications and approvals.

27 Photovoltaic Catalogue v-19 www.ipd.com.au Phone: 1300 556 601