WMATA Replacement of Traction Power Equipment

This design-build project included the replacement of traction power equipment in thirty-three existing substations and building a training simulator at WMATA’s Telegraph Road facility. MEC’s scope of work in each substation included the installation of new:

• DC and AC panels
• Annunciators
• insulated “Amazite” floor where required
• Isolation transformers

Work also included: 

• High and medium voltage terminations and testing
• Rigging of all new equipment into the substations
• Replacement of the UPS (Uninterruptible Power Supply) and batteries in six of the substations
• Testing and commissioning of all new switchgear.
• Installation of all control cable

WMATA required a minimum number of switchgear cubicles remain online at all times. Temporary cathode breakers were required in some substations to facilitate the safe removal and replacement of existing switchgear.