Engineering Support You Can Rely On

Engineering Support for Transformers & Power Systems

The PowerNex Technical Support Center provides professional engineering assistance throughout the entire lifecycle of transformer and voltage regulation equipment.
Our support team works closely with utilities, EPC contractors, electrical consultants, and industrial operators to ensure safe installation, stable operation, and long-term reliability of critical power assets.

Unlike generic customer service, PowerNex technical support is delivered by experienced transformer engineers, combining manufacturing expertise with global field experience.

What We Support

Our Technical Support Center covers the following PowerNex equipment and systems:

• Power Transformers (Oil-Immersed & Dry-Type)

• Distribution Transformers

• Pad-Mounted Transformers & Unit Substations

• Automatic Voltage Regulators (Servo & Static)

• Transformers for Solar, Wind & Energy Storage Systems

• Custom and OEM Transformer Solutions

Support services are available for new installations, operating assets, retrofit projects, and system upgrades.

Installation & Commissioning Support

Proper installation and commissioning are critical to transformer performance and service life. PowerNex provides:

• Pre-installation technical review and engineering confirmation

• Foundation, grounding, and cooling system verification

• On-site or remote installation supervision

• Commissioning test guidance and result evaluation

• Start-up support and energization checklists

Early-stage technical involvement helps reduce commissioning delays, protection malfunctions, and early-life failures.

Operation & Maintenance Assistance

PowerNex supports customers during normal operation and long-term maintenance by providing:

• O&M manuals and site-specific maintenance plans

• Preventive and predictive maintenance recommendations

• Oil testing interpretation and DGA analysis support

• Load management and thermal performance assessment

• Cooling system and accessory troubleshooting

Our engineers help customers identify early warning signs, allowing corrective action before failures occur.

Troubleshooting & Failure Analysis

When abnormal conditions occur, PowerNex provides structured technical troubleshooting support:

• Overheating, abnormal noise, vibration, or odor

• Repeated protection trips or alarms

• Insulation degradation and moisture-related issues

• AVR instability or voltage regulation problems

• Harmonics, unbalanced load, and power quality issues

Root cause analysis focuses on system conditions, operating history, and test data, not just symptom correction.

Technical Documentation & Resources

The Technical Support Center provides access to professional documentation, including:

• Installation, Operation & Maintenance Manuals (IOM)

• Factory Test Reports and Type Test Data

• Wiring diagrams, nameplate explanations, and schematics

• Technical white papers and application notes

• Transformer glossary and engineering references

These resources support both day-to-day operation and engineering decision-making.

Custom Engineering & Upgrade Support

For system expansion or changing operating conditions, PowerNex offers:

• Load increase and capacity reassessment

• Cooling system upgrades (ONAN → ONAF, fan retrofits)

• Monitoring system integration

• Retrofit and life-extension solutions

• Custom transformer redesign and OEM branding support

Engineering modifications are evaluated based on thermal limits, insulation aging, and system protection coordination.

Renewable Energy & Special Applications

PowerNex engineers provide dedicated support for renewable and special power systems:

• Solar PV step-up transformers

• Wind power transformers

• Battery Energy Storage System (BESS) transformers

• High-harmonic and inverter-based systems

• Offshore, high-altitude, and harsh-environment applications

These applications require special consideration of harmonics, thermal stress, and grid interaction.

When to Contact Technical Support

You should contact the PowerNex Technical Support Center if you experience:

• Abnormal temperature rise or rapid oil degradation

• Unusual noise, vibration, or smell

• Repeated protection relay trips

• Changes in load profile or system expansion

• Planned relocation, retrofit, or repurposing of equipment

Early communication significantly reduces downtime and repair cost.

How Our Support Works

1. Submit a technical inquiry with basic equipment data

2. PowerNex engineers review drawings, test reports, and site conditions

3. Technical recommendations are issued with clear actions

4. Follow-up support ensures issue resolution

Support can be provided remotely or on-site, depending on project requirements.

PowerNex Engineering Commitment

PowerNex is a China-based leading transformer manufacturer and global supplier, serving customers across North America, Europe, the Middle East, South America, Africa, and Asia-Pacific.

Our Technical Support Center reflects our long-term commitment to engineering responsibility, product reliability, and customer success—not only during delivery, but throughout the full equipment lifecycle.

For technical assistance, project consultation, or customized support solutions, contact the PowerNex Technical Support Center.