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Electronic Theatre Controls Inc

How to Convert a SmartPack between 3-Phase and Single Phase

This article describes how to convert a SmartPack to between 3-Phase feed and a Single-Phase feed. We define a 3-Phase feed as 3 Hot legs, Neutral and Ground. We define a Single-Phase feed as 2 Hot lets, neutral and Ground.

Both Portable and Wall Mount SmartPacks easily switch from single phase to three phase operation, or vice-versa, by moving the power feed wires from the L2 terminal in the pack to the L1 and L3 lugs on the power board. Each SmartPack ships with a document including illustrations for this purpose.

A quick summary of the wire placements for both modes:

SmartPacks originally wired as three-phase
  L1 L2 L3
Three-phase 1A, 1B 2A, 2B 3A, 3B
Split-phase 1A, 1B, 2A none 3A, 3B, 2B
SmartPacks originally wired as split-phase
  L1 L2 L3
Split-phase 1A, 1B, 1C none 2A, 2B, 2C
Three-phase 1A, 2A 1B, 2B 1C, 2C

If wired incorrectly, your SmartPack dimmers may not fade properly or may jump to full when set at a low level. No worries, this just means that you didn't properly configure your pack for single or 3 phase operation.

The SmartPack will operate within a voltage range of 85-140VAC, 47-63Hz. This will allow the SmartPack to be used in countries with a power cycle of 50Hz.

Single Phase Setup
Single Phase Setup.jpg
3 Phase Setup
3 Phase Setup.jpg

 

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