Supply of TX Transformer · UK public procurement notice

The Driver and Vehicle Licensing Agency (DVLA) have procured the supply, installation, testing, commissioning and handover of a replacement TX2 1000 kVA distribution transformer and the associated high voltage (HV) and low voltage (LV) cabling infrastructure at the Morriston site. The works would also be to replace existing cabling to the existing transformer.

The works are intended to restore and improve electrical resilience across the estate by replacing the failed secondary transformer and associated aged cabling. The new equipment must meet or exceed the specifications below:

Equipment Specification

• Transformer Capacity: 1000 kVA
• Type: Oil filled distribution transformer
• Standard: IEC 60076
• Vector Group: Dyn11
• Primary / Secondary Voltage Ratio: 11,000 V / 415 V
• Cooling Method: KNAN
• Insulating Liquid: Midel 7131 (Natural Ester)
• Core Material: Cold Rolled Grain Oriented (CRGO) steel.
• Conductor Material: Copper windings
• Compliance: CE / UKCA marked
• Installation Type: Suitable for installation within existing A Block Transformer House
• Design Intent: Like for like replacement of original TX2 to maintain system uniformity and simplify maintenance.

The supplier shall ensure that all proposed equipment is compatible with the existing DVLA HV/LV distribution network, protection systems and switchgear.