POWER SYSTEM ANALYSIS
Protection Coordination Study in Dubai, UAE
A protection coordination study analyses the sequence and timing of protective devices in an electrical power system to ensure that faults are isolated by the nearest upstream device without tripping unaffected circuits. Proper coordination minimises outage scope, prevents equipment damage, and maintains power continuity to critical loads.
Protection Coordination Study Services in Dubai, UAE
Carelabs performs comprehensive protection coordination studies for industrial and commercial power systems across the UAE. Using ETAP software, we analyse and optimise the time-current characteristics of relays, circuit breakers, fuses, and other protective devices to ensure selective fault isolation throughout your electrical distribution network.
Why Protection Coordination Matters
Without proper coordination, a fault in one part of your system can trip upstream breakers and cause widespread outages affecting critical operations. In Dubai's demanding industrial environment, unplanned shutdowns cost facilities thousands of dirhams per hour and can compromise safety systems. Our coordination studies ensure that only the device closest to a fault operates, preserving power to the rest of the system.
Integrated with Arc Flash Analysis
Protection coordination directly affects arc flash incident energy levels. Faster fault clearing times reduce the energy released during an arc flash event. We optimise relay settings and breaker configurations to achieve the best balance between selective coordination and minimum arc flash hazard levels.
What We Deliver
Ensuring Selective and Reliable Fault Protection
Selective Coordination
Ensure each protective device operates in the correct sequence to isolate faults at the nearest point without nuisance tripping.
Relay Setting Optimisation
Calculate and recommend optimal relay settings, pickup values, and time delays for all protective devices in your system.
Arc Flash Reduction
Optimise fault clearing times to reduce arc flash incident energy and improve worker safety at every working point.
Our Process
Our Protection Coordination Process
System Data Collection
Gather existing relay settings, breaker trip curves, fuse ratings, transformer impedances, and utility fault contribution data.
ETAP Model Development
Build a detailed power system model incorporating all protective devices, their characteristics, and system impedances.
Short-Circuit Analysis
Calculate fault currents at every bus to determine the operating conditions each protective device must handle.
Coordination Analysis
Plot time-current characteristics and analyse coordination between all device pairs from load to source.
Setting Optimisation
Optimise relay settings to achieve selective coordination while minimising fault clearing times for arc flash reduction.
Report Delivery & Implementation Support
Deliver comprehensive reports with recommended settings and support your team during relay setting implementation.
SYSTEM RELIABILITY
Minimising Outage Impact Across Your Facility
Poor coordination causes cascading trips that shut down entire sections when only a localised fault occurred. A proper study ensures faults are contained, critical loads stay energised, and recovery is fast.
- Time-current characteristic analysis for all protective devices
- Verification of breaker interrupting ratings against fault levels
- Coordination of relays, fuses, and circuit breakers across voltage levels
- Assessment of generator and transformer protection schemes
- Identification of coordination gaps and miscoordination points
- Optimised settings that balance selectivity with arc flash reduction
DELIVERABLES
What You Receive
Our protection coordination study delivers a complete set of time-current coordination plots, recommended relay settings, and device coordination tables. All reports are formatted for DEWA review and internal engineering use.
- Time-current coordination plots for all protective device pairs
- Recommended relay settings with pickup and time dial values
- Device coordination tables showing selectivity margins
- Short-circuit current analysis at each bus location
- Single-line diagrams with updated device settings
- Summary of miscoordination points with corrective recommendations
FAQ
Frequently Asked Questions
What is a protection coordination study?
A protection coordination study analyses the time-current characteristics of all protective devices in an electrical system to ensure faults are cleared by the nearest upstream device. Proper coordination prevents nuisance tripping of main breakers when a fault occurs on a downstream branch circuit.
Why is protection coordination important for my Dubai facility?
Without coordination, a single fault can cascade through your system and trip main breakers, shutting down your entire facility. In Dubai's industrial environment, unplanned outages cost thousands of dirhams per hour and can compromise safety-critical systems like fire alarms and emergency lighting.
How does protection coordination relate to arc flash studies?
Protection coordination directly affects arc flash hazard levels. Faster fault clearing times reduce the incident energy released during an arc flash event. By optimising relay settings and coordination, we can simultaneously improve selectivity and reduce arc flash hazard severity across your facility.
What software does Carelabs use for coordination studies?
Carelabs uses ETAP power system analysis software for all protection coordination studies. ETAP provides comprehensive time-current plotting, device library with manufacturer curves, and automated coordination checking to ensure accurate and efficient analysis of complex power systems.
How long does a protection coordination study take?
A typical protection coordination study for a medium-sized industrial facility takes three to six weeks, including data collection, modelling, analysis, and report delivery. Complex facilities with multiple voltage levels and numerous protective devices may require additional time for thorough analysis.
Do I need to shut down my facility for a coordination study?
Data collection for a protection coordination study can typically be performed with equipment energised. We collect nameplate data, relay settings, and breaker information during scheduled access. Implementation of recommended settings may require brief outages coordinated with your maintenance schedule.
What types of protective devices are included in the study?
Our coordination studies include all protective devices in your power system: protective relays, moulded-case circuit breakers, power circuit breakers, fuses, motor overload relays, transformer protection, and generator protection. We analyse coordination across all voltage levels from utility source to final loads.
Can Carelabs implement the recommended relay settings?
Carelabs provides detailed setting recommendations and implementation support. We can guide your maintenance team through relay programming and breaker adjustments, or coordinate with your approved electrical contractor to implement all recommended settings during scheduled maintenance windows.
How often should protection coordination studies be updated?
Protection coordination studies should be updated whenever significant changes are made to the power system, such as adding new loads, modifying source capacity, replacing protective devices, or changing transformer configurations. A review every three to five years is recommended even without system changes.
Does DEWA require protection coordination studies?
DEWA requires that electrical installations comply with relevant IEC and IEEE standards for protective device coordination. A formal coordination study demonstrates compliance and is frequently requested during major facility modifications, new connections, and capacity upgrades involving DEWA-connected systems.
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Optimise Your Protection Coordination
Ensure selective fault isolation and minimise outage impact across your electrical distribution system.