Digital Voltage Monitors?

[Patrick Jonke]

Does anyone make a voltage monitor with a digital display that can work
with up to 1KV AC RMS? Sort of like a hardwired digital multimeter with
only one range selection. It would be nice if it was rack-mountable too.

Thanks in advance...

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Patrick Jonke
School of Ocean and
Earth Sciences & Technology
University of Hawaii
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[Douglas P. McNutt]

In Article <pjonke-1309...@higstar11.soest.hawaii.edu>,

pjo...@soest.hawaii.edu (Patrick Jonke) wrote:
>
>Does anyone make a voltage monitor with a digital display that can work
>with up to 1KV AC RMS? Sort of like a hardwired digital multimeter with
>only one range selection. It would be nice if it was rack-mountable too.
>

I am working on a power line monitor for Smith Research and Technology Inc.
Of Colorado Springs. It has both current and voltage capability. The first
product will be limited to 480VAC but it's not much of a step to a kilovolt.
The device uses a microprocessor to linearize and correct for phase shifts.
Harmonic amplitudes to 13th are planned with a serial digital output. You
need to provide the display, but we're betting that most people would rather
have the data in a microcomputer.

From the USA. The only socialist country that refuses to admit it.

[Greg Herlein]

In article <pjonke-1309...@higstar11.soest.hawaii.edu> pjo...@soest.hawaii.edu (Patrick Jonke) writes:
>From: pjo...@soest.hawaii.edu (Patrick Jonke)
>Subject: Digital Voltage Monitors?
>Date: 14 Sep 94 00:20:49 GMT

>Does anyone make a voltage monitor with a digital display that can work
>with up to 1KV AC RMS? Sort of like a hardwired digital multimeter with
>only one range selection. It would be nice if it was rack-mountable too.

Any special reason that you don't want to use a PT? I'm in the utility
industry and routinely monitor 12kV and 21kV distribution lines with PTs.
They work fine, you just have to make sure the accuracy class is good enough
for what you want to do.

/**************************************************************************
Greg Herlein (gc...@pge.com) ! "Confidence is supreme until you
These comments are mine and are ! understand the problem"
not those of my employer ! - unknown
**************************************************************************/