Tri-Phase Control

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The Tri-Phase Control and Tri-Phase with Ground Trip Control (TPG) are comprised of solid-state circuit boards and “plug-in” type time current curve (TCC) cards. Controls include DIP-switches on the control circuit board and provide means to program control operation. Tri-Phase Control settings include unique minimum trip levels for each phase, activation and programming of the instantaneous trip feature, and selection between single and three-phase tripping.

TPG Control Settings include unique minimum trip levels for each phase and minimum trip levels for ground, a ground trip block ON/OFF switch, activation and programming of the instantaneous trip feature for both phase and ground, and selection between independent or threephase ganged tripping.

On both controls, independent trip operation is only possible when operating a VFI or PST-9 that is equipped with three individual single-phase trip handles.

Minimum Trip Settings Minimum-trip settings for each phase are DIP-switch selectable, allowing convenient configuration to meet specific application requirements.
Instantaneous Trip The available minimum trip multipliers are 1X, 3X, 5X, 7X, 9X, 11X, 13X, or 15X.
Time Delay Settings Phase and Ground time delay curves are set by TCC modules. The Tri-Phase control must have a phase TCC module installed in the TCC receptacle for proper operation.

Features

Types Tri-Phase and Tri-Phase with Ground Trip (TPG) electronic controls feature:

  • Solid-state circuit boards
  • Plug-in type time current curve (TCC) cards
  • DIP switches on the control circuit board provide means to program control operation