×
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

IP Code in Motor Nameplate

IP Code in Motor Nameplate

IP Code in Motor Nameplate

(OP)
I am starting to curious with this one.
Usually, when we purchase motor, it will shown IP (Ingress protection) code on name plate. Let say, example, IP 55. In my understanding and also what I taking from catalog, IP code in here means enclosure protection. Enclosure means motor sealing.
How about terminal box embedded on it. Is it also IP 55??
If we go to catalog for request, its only need specify of IP code for enclosure.
Your comment is very appreciate.
 

RE: IP Code in Motor Nameplate

(OP)
Hi pumps,

Refer to your answer I can summarize if IP 55 in my motor name plate will be cover for enclosure motor as well as terminal box.

The basic philosophy for IP code are:
- 1st digit for protection against finger and solid object
- 2nd digit for protection against water.

Let say, I want to install motor for driving a Fan in Battery Room.
Regarding with Classification Area in Oil&Gas Industries and some Process Safety requirement, the motor shall be Class I Zone 1 Group C T3 ATEX certified.

I am trying to looking in the vendor catalog and I find if the minimum IP suitable with this case is minimum IP 55 T3.
And other vendor state for zone 1, it shall be IP 65.

For me it's very debatable. If we back to the philosophy IP code, it will be intended for Solid object and water object.
I select IP 55 because minimum enclosure protection for Class I Zone 1 is IP 55 (regarding with vendor offering)and for Hazardous protection I selected Ex "d" for motor enclosure and Ex "e" for terminal box.

If some vendor come and offer me optional / modify product such IP 55 for enclosure and IP 41 for terminal box, for me it is make sense because its a indoor location as long as Ex "d" and Ex "e"  can be proven.

My Question:
1. Is it possible to achieve IP 41 and Ex "e" in same terminal box?? Is it marketable??

2. Is it possible to put IP 55 Ex "d" T3 for motor enclosure and IP 41 Ex "e" T3 for Terminal box? Have any problem with ATEX,BASEEFA, UL, and any other notified body certification for explosive atmosphere??

 



 

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