Discover our Clipsal Smart Home packages as seen on the Block

in location

OR

I'm looking for

  • Wholesalers
    • Uncheck All Check All
  • EXPERTISE
    • Expand
    • Expand
    • Expand
    • Uncheck All Check All
  • Switchboard Manufacturers
    • Uncheck All Check All
OR

The best way to see what Clipsal electric products can do for your home is seeing them in action at a Clipsal Display Centre.

Product stock may vary according to location. If you're after a specific product range, please check with your chosen location before visiting.

10 Results
    Load More Load Complete
    Change Location

    How do I hardwire 10kva and 20kva transformers in a 208/120 or 240/120 environment

    Issue:
    Implementing a hardwire stepdown transformer in a 208v or 240v environment


    Product Line:

    Smart-UPS / Symmetra

    Environment:

    APTF10KT01, APTF10KW01, and APTF20KW01, All Serial Numbers

    Cause:

    Unbalanced UPS outputs require a stepdown transformer to power 120v loads


    Resolution: This document refers to installing  the APTF10KT01, APTF10KW01, and APTF20KW01 transformers in a North American 120/240 or 120/208 environment. For installations in other regions please consult the users manual.

    The wiring block outputs are as follows:


    For domestic use, make sure that the Terminal Block Jumper is installed between the Ground Terminal and Terminal 8 on the output wiring block, as illustrated on page 8 of the user manual. Please also make sure that the input voltage switch is in the correct position.

    The step-down transformer provides 240/120 output as 2 120v hots, a neutral, and a ground. It provides 208v output as a 120v hot, an 88v hot, and a ground. The 120v hot (terminal  7) and the 88v hot (terminal 9) are 180 degrees out of phase. You will measure 208v from terminals 7 to 9. The step-down transformer is not able to provide 2 120v hots that are 120 degrees out of phase as you would see with utility power.



     Note: If your installation requires both 208v and 120v output power you will need 2 separate subpanels: a 240v/120v panel and a dedicated 208v subpanel.

    Didn’t find what you were looking for?

    Try Searching Again View Our Categories

    Need further assistance?

    Our Customer Care department provides total customer service solutions for our residential, industrial and commercial applications.

    Get Assistance