Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 11 replies
  • Subscribers 33 subscribers
  • Views 2558 views
  • Users 0 members are here
Options
You may also be interested in
This discussion is locked.
You cannot post a reply to this discussion. If you have a question start a new discussion

What's IMOD_MAX_OCPR ?

AJJewsbury

I've been trying to make some sense of the newly re-written section 712 (PV) - but I'm struggling with a few things - firstly can anyone tell me what "IMOD_MAX_OCPR" represents? (e.g. in regs 712.431.101 and 102). Unlike most one-off symbols (like Np) it's not explained below, nor can I find it on page 46 (Symbols used in BS 7671). It seems to be something to do with an overcurrent protective device, but seemingly not it's nominal rating, since part of the requirement is that  In ≤  IMOD_MAX_OCPR, nor I guess breaking capacity since 1.35 IMOD_MAX_OCPR ≤ (Ns -1) ISC MAX.

   - Andy.

Parents
  • 0

    Page 9:

    Define the specifications of the PV module


    Criteria


    Isc: Short-circuit current of the module at Standard Test Conditions (STC) - Data provided by the PV Manufacturer Voc: Open circuit voltage of one module at STC - Data provided by the PV Manufacturer
    Ns: Number of modules in series per string
    Np: Number of strings in parallel per array
    Imod_max_OCPR : The PV module maximum overcurrent protection rating specified by IEC 61730-2 (this is often specified by module manufacturers as the maximum series fuse rating)

    www.eaton.com/.../eaton-bussmann-series-photovoltaic-fuses-catalogue-ca135004en.pdf

Reply
  • 0

    Page 9:

    Define the specifications of the PV module


    Criteria


    Isc: Short-circuit current of the module at Standard Test Conditions (STC) - Data provided by the PV Manufacturer Voc: Open circuit voltage of one module at STC - Data provided by the PV Manufacturer
    Ns: Number of modules in series per string
    Np: Number of strings in parallel per array
    Imod_max_OCPR : The PV module maximum overcurrent protection rating specified by IEC 61730-2 (this is often specified by module manufacturers as the maximum series fuse rating)

    www.eaton.com/.../eaton-bussmann-series-photovoltaic-fuses-catalogue-ca135004en.pdf

Children
No Data

Join us to get the best from IET EngX.

Joining EngX lets you personalise your experience so you stay up to date on the topics that interest you, plus you’ll be able to make connections who are looking to collaborate, exchange ideas and more.

Join us Not now

Community Rules & Guidelines