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

    Lost Neutral - effects on loads and UL1449

    Issue:

    Lost Neutral - effects on loads and UL1449

    Product Line:

    All Back-UPS, Back-UPS PRO and Personal Surge

    Environment:

    Lost Neutral in electrical infrastructure.

    Cause:

    Lifted neutral at utility panel.

    Resolution:

    In a typical balanced load with all loads using the neutral return and the neutral is severed, the voltage from each Phase appears across each load and is added on itself. This is a typical fault condition. Underwriter's Laboratories realized that this fault condition is common and it is not up to the Surge Protection Industry to prevent these failures but in the event of this common failure, UL addressed this condition by requiring all Surge Protectors to pass a fault of 240 VAC at different current levels to simulate different loads. These currents are: 125 mA rms. 500 mA rms. 2.5 A rms. and 5 A rms. They also require an unlimited current test (1000 A rms. or greater). 240 VAC is used because most household wiring is 120/240 3 wire single phase and a lost neutral produces 240 VAC. The unit during this test has cheesecloth wrapped around it. The unit may not emit flame nor can it char the cheesecloth nor can it create an opening in the housing that exposes live metal parts large enough for a child's finger to be inserted. After the test, the unit may not allow leakage currents of > 0.5 mA from Line to Ground and Neutral to Ground also it must withstand a dielectric voltage of 240 VAC for minute between each protected mode. Our units have passed this stringent test requirement in order to get UL recognition and to insure the safety of our customer's lives and property.
     

    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