Results 1 to 8 of 8

Thread: Over voltage and lost neutral protection

  1. #1
    Platinum Member
    Join Date
    Apr 2010
    Location
    planet earth
    Posts
    2,498
    Thanks
    114
    Thanked 206 Times in 180 Posts

    Over voltage and lost neutral protection

    Anyone tried these units... i see they have an interesting range of protection devices.


    https://za.rs-online.com/web/p/surge...units/3115925/
    Comments are based on opinion...not always facts....that's why people use an alias.

  2. #2
    Full Member
    Join Date
    Dec 2013
    Location
    Western Cape
    Posts
    72
    Thanks
    13
    Thanked 5 Times in 3 Posts
    Sounds like a very sophisticated power surge arrestor and expensive

  3. #3
    Silver Member
    Join Date
    Mar 2019
    Location
    East london
    Posts
    200
    Thanks
    7
    Thanked 29 Times in 28 Posts
    Hi Ian

    Price a bit steep, but looks good. Haven't used this unit.

    I have however used the Fridge Safe unit from Ellies rated at 5A together with a single pole contactor for more oomph.
    This combination 25A works out at about R1200.

    Cheers & peace out .... Derek.

  4. #4
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    2,903
    Thanks
    107
    Thanked 592 Times in 502 Posts
    Blog Entries
    1
    I have a product which is similar and way cheaper.

    3P5WVSPC-005 - 3 Phase 5 Wire Voltage and Surge Protection Control

    Easy to install
    All 3 phases Voltage Monitoring
    Phase sequence protection
    Earth Voltage monitoring
    Nuisance free Delay before trip
    LED Indication of Status
    Power on delay
    Delay after each fault
    Time Save Delay on each Fault
    Surge protection on all phases
    Surge protection between Neutral & Earth
    LED indication of Surge Arresters operational
    Designed for extra-long service life

    See my brochure
    3P5W Surge Protection.pdf
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

  5. #5
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    2,903
    Thanks
    107
    Thanked 592 Times in 502 Posts
    Blog Entries
    1
    Quote Originally Posted by Derlyn View Post
    Hi Ian

    Price a bit steep, but looks good. Haven't used this unit.

    I have however used the Fridge Safe unit from Ellies rated at 5A together with a single pole contactor for more oomph.
    This combination 25A works out at about R1200.

    Cheers & peace out .... Derek.
    Interesting some 10 years back a made a product which I sell into Mozambique and locally called a Fridge Guard, which works well. Have had it on my fridges and to date with all the power issues have not had a fridge failure. This included a holiday home in Limpopo which had major voltage issues.

    The Fridge Guard comes in two low cost models for home , office or factory use. Namely a 16 Amp resistive (8 Amp inductive) and a 30 Amp resistive (20 Amp inductive load) versions.
    Typical applications include, refrigerators, electric motors, electric mixers, sensitive control equipment, lighting equipment, etc.

    3 coloured light emitting diodes provide positive feedback to the user, showing the status of the mains supply at all times.

    Red - Over Volt, supply over 265Volts
    Green- Under Volt, supply less than 186Volts
    Flash Yellow - Wait to start, voltage within 186 and 265Volts
    Yellow - Volt O.K., load connected to mains and voltage between 186 and 265Volts.
    5 minute delay after voltage recovery or power up delay.
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

  6. #6
    Silver Member
    Join Date
    Jun 2017
    Location
    Port Elizabeth
    Posts
    349
    Thanks
    7
    Thanked 87 Times in 71 Posts
    ABB also do a din rail clip in voltage monitoring relay at 22,5mm wide at around 3K - You need to fit a contactor to match the load

  7. #7
    Diamond Member Justloadit's Avatar
    Join Date
    Nov 2010
    Location
    Johannesburg
    Posts
    2,903
    Thanks
    107
    Thanked 592 Times in 502 Posts
    Blog Entries
    1
    Quote Originally Posted by GCE View Post
    ABB also do a din rail clip in voltage monitoring relay at 22,5mm wide at around 3K - You need to fit a contactor to match the load
    My unit for a similar price includes surge protection
    Victor - Knowledge is a blessing or a curse, your current circumstances make you decide!
    Solar and LED lighting solutions - www.microsolve.co.za

  8. #8
    Platinum Member
    Join Date
    Apr 2010
    Location
    planet earth
    Posts
    2,498
    Thanks
    114
    Thanked 206 Times in 180 Posts
    Quote Originally Posted by GCE View Post
    ABB also do a din rail clip in voltage monitoring relay at 22,5mm wide at around 3K - You need to fit a contactor to match the load

    I have a customer who only wants ABB products installed... What separates ABB from the rest is their circuit breakers have a dual terminal ...so you dont have to squeeze 2 wires in one terminal...you pay more but at least you get what you pay for.
    Comments are based on opinion...not always facts....that's why people use an alias.

Similar Threads

  1. Lightning protection vs surge protection
    By ians in forum Electrical Contracting Industry Forum
    Replies: 8
    Last Post: 28-Feb-20, 08:02 AM
  2. Voltage between Neutral and Earth - When is it a fault?
    By Justloadit in forum Electrical Contracting Industry Forum
    Replies: 5
    Last Post: 20-Jul-19, 09:23 PM
  3. ELEVATED VOLTAGE TO NEUTRAL ABOVE 50 V -NOTICE OF POTENTIAL DANGER
    By Tshepo Mokoena in forum Electrical Contracting Industry Forum
    Replies: 5
    Last Post: 26-Apr-18, 08:26 AM
  4. Elevated voltage on supply neutral measurement
    By PaulG in forum Electrical Contracting Industry Forum
    Replies: 8
    Last Post: 05-Mar-16, 07:45 PM
  5. Difference between: Power factor correction, Voltage regulation and Voltage stabisizi
    By BigRed in forum Electrical Contracting Industry Forum
    Replies: 8
    Last Post: 08-Feb-10, 09:29 PM

Did you like this article? Share it with your favourite social network.

Did you like this article? Share it with your favourite social network.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •