
Protection
testing

Protection
testing
Protection Testing is essential to ensure the reliability and safety of electrical power systems. We offer comprehensive protection testing to verify the performance of protective relays, circuit breakers, and associated equipment. By simulating fault conditions and testing system responses, we ensure that your protection systems are functioning correctly, minimising the risk of equipment damage and power outages. Our expert team uses advanced diagnostic tools and follows industry standards to safeguard your electrical infrastructure, enhancing system reliability and preventing costly downtime.
Relay Settings Verification: Ensure the relay settings match the protection scheme requirements.
Pickup and Dropout Testing: Check the pickup (the point at which the relay activates) and dropout (the point at which it deactivates) values.
Time Delay Testing: Verify the time delay settings for relays that have time-dependent functions.
Directional Feature Testing: Test directional relays to ensure they correctly identify the direction of fault currents.
Timing Tests: Measure the opening and closing times of the circuit breaker to ensure it operates within specified limits.
Contact Resistance Measurement: Check the resistance of the circuit breaker contacts to ensure they are within acceptable limits.
Trip Testing: Simulate faults to verify the breaker trips correctly in response to relay signals.
Close Coil and Trip Coil Testing: Verify the operation of the close and trip coils.
Stability Testing: Verify the differential protection stability under normal load conditions.
Sensitivity Testing: Ensure the differential protection is sensitive enough to detect internal faults.
CT Matching: Check that the CTs used in the differential protection scheme are properly matched.
Pickup and Time Delay Testing: Verify the pickup settings and time delays for overcurrent protection.
Instantaneous Trip Testing: Check the instantaneous trip function of the overcurrent relay.
Inverse Time Characteristics Testing: Ensure the relay follows the specified inverse time-current characteristics.
Pickup and Time Delay Testing: Verify the settings for earth fault protection.
Sensitive Earth Fault Testing: Check the operation of sensitive earth fault relays.
Stability Testing: Verify the busbar protection stability under normal operating conditions.
Sensitivity Testing: Ensure the protection scheme can detect faults on the busbar.
Initiation Testing: Verify that the breaker failure protection is correctly initiated upon a breaker’s failure to trip.
Backup Tripping: Ensure the backup trip signal is sent to adjacent breakers in case of a breaker failure.
Differential Protection Testing: Check the transformer differential protection scheme.
Overcurrent and Earth Fault Protection Testing: Verify the settings and operation of overcurrent and earth fault protection for transformers.
Protection Coordination: Verify coordination between different protection devices to ensure proper selectivity and minimize disruption.
End-to-End Testing: Conduct end-to-end tests by simulating faults and verifying the overall protection scheme, including communication and coordination between devices.
SCADA and Communication Testing: Ensure proper integration and communication with the Supervisory Control and Data Acquisition (SCADA) system.
Remote Control and Monitoring: Verify remote control and monitoring functionalities.
IEC 61850
G99 compliance testing: Testing to check compliance against ENA G99.
DNO witness testing.
WHY CHOOSE
POWER DISTRIBUTION SPECIALISTS

Count on power distribution specialists for reliable Protection testing services that optimise performance and enhance operational efficiency.
Expertise and Experience: We offer a team of highly trained engineers with extensive experience in protection testing for electrical systems. Our knowledge ensures accurate testing and analysis, minimising the risk of failures and improving system reliability.
Comprehensive Testing Services: We provide a wide range of protection testing services, including relay testing, circuit breaker testing, and system calibration, ensuring all components of the protection system function as intended.
Advanced Equipment and Technology: We use state-of-the-art testing equipment, enabling precise and efficient testing. This technology ensures compliance with industry standards and optimises system performance.
Regulatory Compliance and Safety: Our testing services help clients meet regulatory standards and safety requirements. We ensure that systems are in line with current safety legislation, reducing the risk of accidents or penalties.

Leveraging advanced specialist equipment and strategic industry partnerships to precisely meet your project specifications and timelines.
Power Distribution Specialists