ABB CM-UFD.M22 Monitoring Relay

ABB CM-UFD.M22 Monitoring Relay — Voltage & Frequency Protection for Saudi Arabia Solar and Grid Applications

The ABB CM-UFD.M22 is a multi-function monitoring relay designed to protect distributed energy resources (DER), solar PV inverters, and grid-connected equipment from abnormal voltage and frequency conditions. As Saudi Arabia's Vision 2030 renewable energy targets drive a massive buildout of utility-scale solar across the Empty Quarter and Red Sea coastal zones, the CM-UFD.M22 has become a critical component in inverter protection panels and medium-voltage substations.

The relay monitors all three phases simultaneously for over/undervoltage (OV/UV), over/underfrequency (OF/UF), voltage asymmetry, and phase sequence. Its anti-islanding function (loss-of-mains detection) complies with IEC 62116 and VDE-AR-N 4105 — requirements increasingly referenced in Saudi Energy Regulatory Authority (SERA) grid interconnection studies for Saudi Aramco Power Company (APCO) and the Saudi Electricity Company (SEC).

Key Features for KSA Market

The CM-UFD.M22 operates on a 3-phase 3-wire or 3-phase 4-wire system with measurement voltage up to 300 V (L-N) / 520 V (L-L), covering standard Saudi 380/400V LV systems. Its wide operating temperature range (-25°C to +70°C) and DIN rail mounting make it ideal for outdoor combiner box installations in Neom's solar fields and ACWA Power's Al Shuqaiq and Sudair Solar projects.

The dual relay output with configurable time delays allows independent trip commands to main breakers and contactor controls, enabling selective coordination in complex Saudi industrial microgrid architectures.

Technical Specifications

Applications in Saudi Arabia

Utility-Scale Solar: NEOM's renewable energy backbone, Sudair Solar PV (1.5 GW — one of world's largest), Al Shuqaiq III BESS projects all require grid protection relays certified to IEC 62116. The CM-UFD.M22 is pre-approved by multiple EPC contractors operating in these Saudi giga-projects.

Industrial Microgrids: Saudi Industrial Development Fund (SIDF) funded factories in King Salman Energy Park (SPARK) use CM-UFD.M22 in their on-site solar carport installations to comply with SEC grid code under Distribution System Operator (DSO) interconnection requirements.

Commercial Buildings: KAFD (King Abdullah Financial District) buildings and mega-developments like Red Sea Global resorts with rooftop solar use CM-UFD.M22 for anti-islanding protection, a mandatory requirement in Saudi building permit applications for grid-connected PV.

Installation Notes for Saudi Climate

• Panel ambient temperature in direct sun can reach 70°C in Riyadh. Ensure adequate forced ventilation or use louvred outdoor enclosures with solar radiation shields.
• Cable entries should use IP65 glands in coastal and dusty locations (Jubail Industrial City, Ras Al-Khair).
• Programme OF/UF thresholds to 50.5 Hz/49.5 Hz for Saudi grid which normally operates at 50 Hz ±0.5 Hz.

Frequently Asked Questions

Q1: Is the ABB CM-UFD.M22 approved for SEC grid interconnection in Saudi Arabia? SEC's Distribution Grid Code references IEC 62116 and IEEE 1547 for anti-islanding. The CM-UFD.M22 meets IEC 62116 requirements. RAZZ provides full compliance documentation for SEC interconnection dossiers.

Q2: What is the CM-UFD.M22 price in Saudi Arabia? Pricing depends on quantity and project timeline. Contact RAZZ via sales@razz.sa or submit an RFQ for competitive pricing with full ABB warranty and COO documentation.

Q3: Can CM-UFD.M22 monitor both voltage and frequency simultaneously? Yes. All monitoring functions (OV, UV, OF, UF, phase asymmetry, phase sequence) run in parallel. Any threshold violation triggers the configured relay output within the set time delay.

Q4: How does anti-islanding work with the CM-UFD.M22? When the grid disconnects, the monitoring relay detects frequency drift outside the OF/UF window and opens the grid-side contactor/breaker within the programmed response time, preventing the inverter from energising a de-energised grid section and protecting utility workers.

Q5: What wiring is needed for 3-wire vs. 4-wire systems? For 3-wire (Delta) systems, connect L1, L2, L3 only. For 4-wire (Star/TN) systems, connect L1, L2, L3 and N. The relay automatically adjusts L-N vs. L-L voltage thresholds based on the system configuration programmed via DIP switches.

Q6: Does RAZZ stock CM-UFD.M22 in Saudi Arabia? Yes. Standard variants are held in our Riyadh and Dammam inventory. Typical delivery is 3–5 business days. Large quantities or specific supply voltage variants may require 2–3 weeks for import.

Related ABB Products at RAZZ

• ABB OVR T2 25-600 Surge Protective Device
• ABB ACS580 Variable Frequency Drive
• ABB ACS880 Industrial Drive

For a full range of ABB protection relays and monitoring devices in Saudi Arabia, visit our ABB brand page.