United Kingdom
View the UK registered office details.
UK Registered Office
Address18 Canberra Road
Gretna, Dumfriesshire
Scotland
DG16 5DP
Gretna, Dumfriesshire
Scotland
DG16 5DP
Text can be selected and copied.
Welcome to APS
Comprehensive Power System Studies and Engineering Consultancy
Specialist engineering studies supporting projects across battery storage, wind, and solar technologies.
Power System Studies
Engineering Studies That Support Confident Decisions.
APS provides focused power system studies for projects where electrical performance, compliance and design risk need to be understood before decisions are made.
View Study Areas
Independent AssessmentClear FindingsPractical Engineering Advice
Partial Discharge Testing & Monitoring
Offline PD measurement and online PD monitoring for cables, transformers, GIS, and rotating electrical machines.
Power Cable Testing & Diagnostics
Offline testing of power cables, cable insulation assessment, and diagnostic testing for installed cable systems.
Instrument Transformer, Meter & Transducer Testing
Transformer testing, GIS/AIS testing, switchgear condition checks, and electrical diagnostic testing.
Circuit Breaker & Contact Resistance Testing
Testing of circuit breakers, disconnectors, joints, and current-carrying contacts, including static contact resistance measurement.
Protection Relay & PAC System Testing
Protection relay testing and measurement/analysis for protection, automation, and control systems.
Relay Coordination Studies
Testing of CTs, VTs, metering equipment, and electrical transducers used for measurement, protection, and control.
Grounding System Testing
Earth impedance measurement, touch and step voltage testing, EPR assessment, and grounding system verification.
EV Charging Infrastructure Testing
Testing and verification of EV charging installations, including earthing performance, touch voltage assessment, LV safety checks, and compliance support.
Low Voltage Testing & Power Quality Measurement
LV installation testing, continuity, insulation resistance, loop impedance, RCD testing, and power quality measurement.