Services
Commissioning & Installation.
From site preparation through to energisation - handled by engineers who understand the equipment from the inside out.
Our commissioning and installation team works directly on site, providing the full scope of technical services required to bring a transformer into service safely and on programme. Whether the unit has been supplied by South Wales Transformers or sourced elsewhere, we have the expertise and equipment to complete the work to the required standard.
We operate across the United Kingdom and coordinate closely with main contractors, Distribution Network Operators, and site managers throughout every stage of the process.
Commissioning
Ready for energisation.
We provide a comprehensive commissioning service to ensure your transformer operates safely and within specification before entering service. All work is carried out by qualified engineers in accordance with relevant British and international standards.
Visual inspection and verification of nameplate data
Insulation resistance testing
Winding resistance measurement
Turns ratio verification
Oil sampling and dielectric testing (where applicable)
Functional testing of tap changers, protection devices, and auxiliary systems
Preparation of commissioning reports and handover documentation
Installation
Full scope, on site.
Our installation service covers the full scope of on-site work required to position and connect your transformer. We coordinate closely with main contractors, DNOs, and site managers to ensure installation is completed safely, on programme, and in compliance with CDM regulations and relevant site requirements.
Offloading and positioning using specialist lifting equipment
HV and LV cable termination and connections
Earthing arrangements
Oil filling and processing (where required)
On-site safety checks and compliance verification
1
Enquiry & scope
We review your transformer specification, site constraints, and programme requirements to prepare an accurate scope and quotation.
How it works
Site to service.
A clear process from initial enquiry through to handover documentation — with a named engineer responsible throughout.
2
Site survey
Where required, one of our engineers visits the site ahead of delivery to confirm access, lifting points, cable routes, and earthing arrangements.
3
Installation & commissioning
Our team carries out the full installation and commissioning programme, coordinating with the main contractor and DNO as required.
4
Handover
On completion, we provide a full commissioning report, test results, and as-installed documentation for your records.
Manufacturer knowledge
Why South Wales Transformers
Engineers who know the equipment.
Because our commissioning team works alongside our manufacturing team, they understand transformer construction at a level no third-party contractor can match.
Our engineers are familiar with every aspect of transformer design and construction - an advantage that is immediately visible during fault diagnosis or non-standard installations.
Single point of contact
One engineering team handles supply, delivery, installation, and commissioning. No hand-offs, no miscommunication between contractors.
CDM compliance
All installation work is carried out in compliance with CDM 2015 regulations. We can act as Principal Contractor or work within an existing CDM structure as required.
IEC 60076
BS 7671
Applicable standards
CDM 2015
Engineering Recommendation P2
DNO Requirements
Discuss your requirements.
Tell us your transformer rating, site location, and programme - we will come back with a clear scope and quotation.