×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

DC Surge Protectors

DC Surge Protectors

DC Surge Protectors

(OP)
Hi,
Does anybody know the difference between DC surge protectors and AC surge protectors?


I am designing a standalone piece of equipment that has some solar panels charging a battery bank, and then some equipment being powered off these batteries. I want to know if I should put DC surge protectors on the main bus, or just use (cheaper) AC ones instead?

The whole system is ELV (24V) - I can understand the need for DC surge protectors at a high voltage (say, 1000V) but not for this voltage.

Thanks

RE: DC Surge Protectors

From the characteristics of the supply, I guess, the AC surges could be high frequency bursts, where as for the DC, assuming it is fed from the AC - DC rectifier, if it is galvanically not isolated, it could be the reflected surge from the AC system. If it is a galvanically isolated system, there is no surge in the DC system.

DC system, if it is isolated, and inside the Faradays cage, no surge arrestor is required, except across the relay coils where high inductive switching is envisaged.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources