H‑Infinity

A transformer is a precision piece of equipment weighing from hundreds of kilograms to over 400 tonnes. Handling it from delivery to final installation requires meticulous planning, specialized equipment, and experienced personnel. A single mishandling incident — mechanical shock, improper lifting, contamination during assembly — can cause latent damage that leads to premature failure. Our handling and assembly services ensure your transformer arrives at the site, is installed correctly, and starts up without incident.

01What Does Handling & Assembly Include?

Our handling and assembly services cover every step from delivery to handover:

▸Delivery & Unloading — Route surveys, crane selection, lifting plan development, and supervised unloading of transformers from transport vehicles.
▸Movement & Positioning — Skid and roller transport, hydraulic jack positioning, and precise placement onto prepared foundations with proper vibration monitoring.
▸Assembly & Installation — Installation of radiators, conservator, bushings, tap changers, relay panels, and all auxiliary equipment per manufacturer specifications.
▸Oil Filling — On-site oil filling through proper filtration, vacuum drying procedures, and preservation of oil quality during filling.

02Why Proper Handling Matters

Mishandling causes hidden damage that manifests as failures years later:

▸Winding Deformation — Excessive vibration during transport can displace windings, reducing short-circuit strength and creating hot spots.
▸Seal Damage — Rough handling can damage tank seams and gasket surfaces, leading to oil leaks and moisture ingress over time.
▸Bushings & CTs — Delicate instrument transformers and bushings are easily damaged during transport — cracked porcelain, internal shorts, or broken connections.
▸Contamination — Opening the transformer to atmosphere in dusty or humid environments introduces particles and moisture that degrade insulation.

03Our Approach

We follow a rigorous, documented handling methodology:

1. Pre-Delivery Inspection

Verify transformer condition after factory assembly — check冲击记录仪 (shock indicators), sealing integrity, and document photographs before dispatch.

2. Lifting & Rigging Plan

Develop detailed lifting procedures with crane calculations, rigging arrangements, and center-of-gravity verification. Never lift from lifting lugs not designed for the load path.

3. Controlled Assembly

Assemble components in controlled conditions using calibrated torque wrenches, cleanliness protocols, and manufacturer-specified procedures.

4. Documentation

Complete handling register with photographic documentation, shock indicator readings, torque records, and assembly checklists.

04Scope of Handling & Assembly

Our handling and assembly services include:

▸Foundation Review — Verify foundation dimensions, anchor bolt locations, and load-bearing capacity before transformer delivery.
▸Crane & Equipment Mobilization — Coordinate crane size, type (mobile, crawler, or telescopic), and access requirements for the site conditions.
▸Supervised Installation — On-site supervision of all assembly activities, ensuring compliance with manufacturer procedures and project specifications.
▸Oil Filling & Preservation — Vacuum-assisted oil filling, preservation with nitrogen blanketing, and moisture control during the filling process.

05Standards & Compliance

✓IEC 60076 — Power Transformer Handling

✓IEEE C57.12.91 — Routine Tests

✓API 671 — Special Purpose Bearings & Couplings

✓Manufacturer Specifications & Procedures

06Why H-Infinity

Our handling and assembly team has supervised the installation of over 400 transformers across the GCC — from 100 kVA pad-mounted units in residential developments to 250 MVA gas turbine step-up transformers at combined cycle power plants. We understand the critical path implications of transformer installation and work closely with civil, electrical, and commissioning teams to ensure seamless handover. Every handling operation is documented with photos, torque records, and shock indicators — giving clients full traceability.

Handling & Assembly