Transformers procurement guide
Transformers are specified against rating, voltage ratios and cooling type, for both distribution and industrial applications. Electrical equipment must be selected as part of a system, using load, network, protection, environment and applicable project requirements.
System role and load
The stated applications are Site electrical distribution, Industrial plant supply, Network distribution and substations and Solar farm and generation connection. Provide the system role, connected loads, duty, redundancy, future capacity and interfaces with existing equipment.
Ratings, compatibility and acceptance
Compare proposals against Rating in kVA or MVA, Primary and secondary voltages, Oil-filled or dry type, Cooling and installation environment and Protection and accessory requirements. Require source-specific drawings, datasheets, protection or coordination information and the test/standard evidence called for by the project.
Installation, protection and support
Confirm enclosure and environmental conditions, cable/termination interfaces, dimensions and weights, transport protection, site access, installation boundaries, testing, commissioning, training, warranty expectations and spare components.
Information to include in your quotation request
Send the single-line diagram or system description, load and duty, Rating in kVA or MVA, Primary and secondary voltages, Oil-filled or dry type, Cooling and installation environment and Protection and accessory requirements, quantity, site conditions, existing interfaces, destination, installation/testing scope and required project documents.