Page 281 - V16 Catalogue Final

STANDALONE RELAY - ABB
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 - VOLTAGE BASED PHOTOVOLTAIC
Features: Description Part No.
- Monitoring of voltage and frequency in single and Multifunctional Grid protection relay CM-UFD.M33
three phase mains (2-wire, 3-wire or 4-wire AC
systems).
- Pre-settings in accordance with G59/3 and G83/2. Protective Functionality ANSI
- Integrated management of redundancy function. Overvoltage 59
- Multiline, backlit LCD display. Under voltage 27
- True RMS measuring principle. Over Frequency 81H
- Over and Under voltage, 10 minutes average as well Under Frequency 81L
as Over and Under frequency monitoring.
- Two level threshold settings for Over/Under voltage Vector Shift 78
and Over/Under frequency. ROCOF 81R
- ROCOF (Rate of Change of frequency) monitoring
and vector shift configurable.
- Interrupted natural detection.
- All threshold values and tripping delays adjustable. CM-UFD.M33M - VOLTAGE BASED - MODBUS RTU INTERFACE
- Error memory for up to 99 entries (incl. cause of error,
measured value, relative timestamp). Description Part No.
- Test function. Multifunctional Grid protection relay CM-UFD.M33M
- Password setting protection.
- 3 control inputs, e.g for feedback signal, Remote trip.
- 3 c/o (SPDT) contacts. Protective Functionality ANSI
- Various certifications and approvals. Overvoltage 59
Under voltage 27
Over Frequency 81H
Under Frequency 81L
Vector Shift 78
ROCOF 81R

Description Measuring Range Control Voltage Part No.
Grid Monitoring Relay L-L 0-540V AC, 24-240V AC/DC CM-UFD.M33
L-N 0-312V AC

CM-UFD.M33

Renewable energy system Decoupling unit Public grid

Modbus
RTU
Integra on into ABB Ability TM
Electrical Distribu on Control System

Modbus
RTU

Remote PLC for processing & Grid feeding monitoring relay
visualiza on of measurement values CM-UFD.M*M with Modbus RTU

Phone: 1300 556 601 www.ipd.com.au V16-PV-R04 273