EWA delivers end-to-end transformer solutions, from technical consultation to after-salesmaintenance. We specialize in mission-critical infrastructure like data centers, whereuninterrupted power is essential:
1) Technical Consultation & System Design Before any equipment is delivered, our engineering team collaborates closely with the clientEPC contractors, or consultants to ensure:
Accurate load flow and demand analysis
Optimized voltage level and transformer sizing
Integration with redundancy requirements (N+1, 2N, Tier lll/lV)
Compliance with standards (lEC,IEEE, NEC, etc.)
Support with electrical layout drawings, SLDs (single-line diagrams), and tender documentation
Result: A fit-for-purpose transformer solution designed to support reliability, safety, andscalability
2)Transformer Sourced & Supply Thanks to our manufacturing partner, EWA provides transformers customized to the client'sexact needs:
Product Range
Oil-immersed Transformers (up to 100 MVA, 230 kV)
Dry-type Transformers (for indoor or fire-sensitive zones)
Distribution and Power Transformers
Customization Options
Voltage range: LV to HV(e.g., 415V/11kV/33kV)
Power ratings:100kVA-50 MVA+
Cooling methods: ONAN, ONAF,KNAN,KNAF
Advanced sensors for temperature, gas, and partial discharge
Eco-fiiendly fluids: ester oil or biodegradable coolant
Result: A high-performance, reliable transformer built for your environment andoperational strategy.
3)Delivery,Installation & Construction EWA takes full responsibility for the site installation ofthe transformer, including:
Equipment logistics and offloading
Transformer placement and anchoring
Cable terminations (HV & LV side)
Oil filling, containment bund installation, and grounding
Fire suppression setup (where applicable)
Result: A properly installed transformer ready for reliable operation, handled byexperenced technicians.
4) Testing, Debugging & Commissioning Every unit is rigorously tested in the factory (FAT) and again at the site (SAT). Commissioningincludes:
Ratio, polarity,and insulation resistance tests
Transformer oil quality & DGA testing
Protection relay testing and SCADA integration
Load testing and energization
WResult: Safe and smooth integration of the transformer into the live power system, withfull documentation.
5) After-Sales Maintenance & Lifecycle Support EWA provides:
Routine preventive maintenance: oil testing, IR scans, thermegraphy
Emergency service (response within 24-48 hrs)
Remote monitoring systems for real-time diagnostics
Spare parts availability and transformer refurbishment
Transformer lifecysle extension planning
Result: Long-term reliability, minimal downtime, and performance monitoring for criticalinfrastructure.
6) Documentation, Compliance & Training
As-built drawings and test reports
Operation & maintenance manuals
Warranty documentation (typically 24 months)
On-site or remote training for the client's O&M teamCompliance audits and reports
Result: Clear, organized support for operations, inspections, and certifications.
