WMATA REPLACEMENT OF TRACTION POWER EQUIPMENT

Washington, D.C.

This design-build project included the replacement of traction power equipment in 33 existing substations and building a training simulator at WMATA’s Telegraph Road facility. Mass. Electric’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 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.