Contact US

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!

*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

Analog Switchboard Meters - ANSI C39.1

Analog Switchboard Meters - ANSI C39.1

Analog Switchboard Meters - ANSI C39.1

I am trying to replace an old analog voltmeter installed in a synch panel. The reason for doing so is that the ratio of the VT connected to this device has changed. I would like to replace it by another one as similar as possible to the original.
Going through different catalogs of analog meter manufacturers, I have found references to "AB-14" & "AB-40" meter types which appear to refer to analog meter classes described in ANSI C39.1 (I could be wrong though). Anyone could let me know what are the differences between AB-14 and AB-40 meters? Any reference on the internet with info on this subject?
I upload a picture of the voltmeter I am replacing. It is the 0-15kV on the bottom left.
Thank you very much in advance for your help.

RE: Analog Switchboard Meters - ANSI C39.1

So my recollection is the the DB-40 (originally by GE) is the standard taut-band switchboard meter. The DB-14, I think, was a model rated for use in a high-vibration environment - perhaps a Mil-spec.

We specified hundreds of AB-40s, never an AB-14. As you may know, GE sold this product line to Yogogawa many years ago, and now Yogogawa no longer makes them. Crompton may still make a look-alike. Weschler still makes a clone of the old Westinghouse style of panel meter the last time I checked.

The old AB-40 meters were wonderfully durable, in my experience. You might check for old-stock Yogogawa or even used on e-bay. Bear in mind that you'll have a PT input of maybe 120 V and the scale must match what you have. The dials were hand marked based on actual test voltage or current, so each one is kind of a one-off. If it looks like a GE meter, I'd check with Crompton. http://www.cromptonusa.com/switchboard.html

RE: Analog Switchboard Meters - ANSI C39.1

Thank you very much. That is very helpful information.

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! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close