Radian Research Inc.

Radian Products & Information

Radian Research products are used by customers from all over
the world.

Radian customers typically consist of:
> Electric Utility Companies
> Watthour Meter Manufacturers
> Watthour Meter Test System Manufacturers
> Governmental Bureaus of Metrology
> Watthour Meter Testing Companies

>> Power & Energy Reference Standards
>> Site Analyzing Standards
>> Automated Laboratory Reference Systems
>> Testing Systems for Field
>> Testing Systems for Lab
>> Energy Meter Testing Accessories
>> CT and PT Testing Products
>> Calibration Services
>> Software
>> Literature: www.radianresearch.com/products/literature.html

Site Analyzing Standards

The Radian Research Three-Phase Analyzing Standards, consisting of
the RD-30/31/33, are the ultimate instruments for on-site accuracy
testing of electricity meters, performing power quality analysis,
testing CTs, and site wiring confirmation. Built upon the robust
and world renowned performance of the Radian Research RD-3X family
of reference standards, these Analyzing Standards provide for
unsurpassed accuracy, functionality, and ease of operation. Radian
Research Analyzing Standards are designed to work with customer load
or with a stand-alone current source.

The RD-3X Analyzing Standard is shipped from the factory with
Radian’s custom developed MobileSuite software pre-loaded.
The MobileSuite software package is a powerful, but easy to comprehend
and use, set of tools to facilitate the full array of testing and analysis the
Analyzing Standard is capable of performing. MobileSuite allows the user
to easily select the configuration, testing or analysis routine to be
implemented. The PCSuite software package is identical in functionality
to the MobileSuite software package but is for use to configure, control,
and analyze data with a remote PC.

Applications - Testing Revenue Meters

The most common application of electric energy standards is the
accuracy testing of revenue billing meters. There are five primary
components required for testing a revenue meter. They are:

Reference Standards: The reference standard is the heart of the
accuracy test. It is the reference measurement to which the meter's
energy measurement is compared. It is important to utilize a reference
standard with an accuracy that is significantly better than the meter you
are testing. If the standard that you use is only slightly more accurate
than the meter under test, the validity of your test on that meter becomes
questionable.

Current Source or Phantom Load: A current source or Phantom Load is
used to generate the test current for the meter test. Both the reference
standard and the meter under test must have the exact same voltage and
current signal applied. Voltage and current sources are available in both
portable configurations for field testing and in larger stationary
configurations for laboratory or meter shop applications. Customers
typically maintain phantom loads from old test sets and upgrade the
remaining components.

Sensors and Pickups: Sensors and Pickups are used to automate the
timing of a meter test. These devices "sense" a calibration pulse from a
revenue meter. There are many different types of sensors suited for
testing electromechanical induction meters and electronic meters.

Counters and Comparators: A counter automates meter testing by
counting pulses from a sensor for a specified test length. After counting
the set number of pulses, the counter typically stops the standard's
display allowing the user to calculate the accuracy of the meter under
test. A comparator will also count calibration pulses from the reference
standard and in many instances performs an automated calculation of
meter accuracy.

Universal Test Jack: The universal test jack is typically required only
with ANSI style socket based meters. The test jack allows the user to
properly route the voltage and current signals from the phantom load so
that the meter under test is properly powered. A test jack of this type is
not required with bottom connect meters which have a more
straightforward connection of voltage and current signals. New Universal
Test Jacks are available from Ekstrom Industries.

Testing Singlephase Revenue Meters: For testing singlephase,
self-contained, ANSI- style socket meters Radian offers Portable Test
Systems. These portable test systems contain all five of the components
for meter testing in a lightweight, compact, simple to operate test kit.

The Radian Research, Inc. Web site:  www.radianresearch.com