Description
The CM-UFD.M31M is a multi-functional grid feeding monitoring relay with Modbus RTU communication interface, 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.M31M 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 is certified in accordance to VDE-AR-N 4105, VDE-AR-N 4110 & VDE-AR-N 4120 and may be connected to the state-of-the-art cloud solution, ABB Ability Energy and Asset Manager. New original ABB part, traceable to the manufacturer. Availability and price on request.
Technical Specifications
| Rated Control Supply Voltage (Us) | 24 … 240 V AC/DC |
|---|---|
| Measuring Range | 0 … 540 V AC |
| Output | 3 C/O (SPDT) Contacts |
| Degree of Protection | Housing IP20; Terminals IP20 |
| Function | Over- and undervoltage monitoring; Interrupted neutral monitoring; Over- and underfrequency monitoring; 10 minutes average value monitoring; Vector shift detection; ROCOF monitoring |
| Mounting on DIN Rail | TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715; TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 |
| Mounting Position | 1 … 6 |
| Standards | VDE-AR-N 4105; VDE-AR-N 4110; VDE-AR-N 4120 |
| Product Net Width | 108 mm |
| Product Net Height | 90 mm |
| Product Net Depth / Length | 67 mm |
| Product Net Weight | 0.312 kg |
| EAN | 4013614521126 |
| Catalog Description | CM-UFD.M31M Grid feeding monitoring rel. 3c/o,L-L=0-540VAC,L-N=0-312VAC,ModbusRTU |
| Customs Tariff Number | 85364900 |
| Category | Grid Feeding Monitors |
| Country of origin | Germany |
| Manufacturer standard delivery time | 5 days |
| Packaging unit | Box x 1 |
| Product status (supplier data) | Active |
Independent distributor — not an authorised ABB dealer. All technical parameters are taken verbatim from the official ABB product data for this exact order code; packaging, customs and delivery data come from the supplier list entry for the same code.
