Service index
What we do.
Nine service lines cover the life of your power system — design, energization, and every year after.
- 01
Acceptance & Maintenance Testing
High- and low-voltage testing — breakers, relays, transformers, cables, insulation diagnostics. Planned maintenance programs built around your site's requirements, and prompt, professional response when faults or breakdowns strike.
- 02
Commissioning & Start-up
Complete commissioning and start-up acceptance testing for substations, switchgear, generators, and electrical systems up to 500 kV. Every protection, isolation, control, and communication scheme is tested thoroughly before energization.
- 03
Engineering & Studies
Short circuit, coordination, power flow, harmonic analysis, voltage analysis, power quality, and stability studies to NEC, ANSI, NEMA, and NESC — engineered for safe, efficient operation.
- 04
Oil Testing & Analysis
Dissolved gas analysis, dielectric testing, PCB analysis, and comprehensive fluid diagnostics — sampled and analyzed to ASTM standards, on-site or mail-in, for early detection of incipient faults.
- 05
Infrared Thermography
Infrared inspections that identify hot spots, electrical issues, and preventive-maintenance needs before they become outages.
- 06
Grounding & Special Tests
Ground grid testing, step and touch potential, power factor testing, UPS testing, and more.
- 07
Circuit Breaker Services
Reconditioning, refurbishing, and remanufacturing for all major OEM circuit breakers — GE, ABB, ITE, Westinghouse, Cutler-Hammer — with spares management, preventive maintenance programs, and 24/7 emergency service.
- 08
NERC Compliance
Program development and execution built on a thorough understanding of NERC standards and their intent — avoiding costly fines and time-consuming remediation.
- 09
Installation
Qualified electrical engineers and technicians complete installation work in a timely, efficient manner, so equipment functions safely and as intended.
Project execution
A proven process.
Our structured approach ensures safety, efficiency, and accuracy at every stage of your project.
-
Stage 01
Planning
- Review project scope, drawings, and requirements
- Develop test plan and schedule
- Mobilize resources and equipment
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Stage 02
Outage Coordination
- Coordinate outage windows with owner and stakeholders
- Confirm access, isolation, and safety requirements
- Pre-job briefings and approvals
-
Stage 03
Testing
- Perform electrical testing in accordance with standards
- Validate equipment performance and protection settings
- Document results in real time
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Stage 04
Engineering Review
- Analyze test data and identify findings
- Evaluate system performance
- Provide recommendations for deficiencies or improvements
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Stage 05
Final Reports
- Compile complete test reports
- Include analysis, results, and recommendations
- Deliver professional, clear, and compliant documentation
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Stage 06
Project Closeout
- Review results with stakeholders
- Turnover of all documentation
- Demobilize and close project
Every project is executed with a commitment to safety, quality, and delivering the reliable results our customers depend on.
Specifications
Field capabilities.
- Voltage levels
- Low ≤ 480 V · Medium 2.4–38 kV · High 38–500 kV
- Circuit breakers
- Air · Magnetic · Oil · Vacuum · SF6
- We test
- Generators & motors · Power transformers · High & medium voltage switchgear · Protective relays & control systems · Instrument transformers (CTs, PTs) · Capacitors & power factor · UPS systems & batteries · Cables & cable systems · Grounding systems · Automatic transfer switches
- Test equipment
- Company-owned — harmonic analysis through 500 kV commissioning
- Accreditation
- NETA — Acceptance Testing · Maintenance Testing
- OEM experience
- GE · Westinghouse · Siemens · ABB · ITE · Eaton
- Standards
- NEC · ANSI · NEMA · NESC · NETA · NERC
- Coverage
- Headquartered in Elizabeth, CO — serving the United States
Let’s power confidence together.
Whether you need testing, commissioning, engineering, or ongoing maintenance support, PTG is your trusted partner for electrical solutions that keep people, facilities, and operations safe.