Version 3.03
WR14 / WR50-12/13 Winding Resistance Meter Instruction Manual
8
INTRODUCTION
GENERAL
Raytech Digital Winding Resistance meters are an enhanced version winding resistance system with
the most advanced demagnetizing circuit. They are designed for a high degree of accuracy for the
measurement of very low resistance of inductive loads.
Ease of use:
This intelligent system has an easy to use operation screen which allows quick selection
of the current level to be measured. This system incorporates a touchscreen which allows the user easy
access to change or activate a feature.
Impressive Accuracy:
The WR series of instruments have high precision, fully automatic, multi-
microprocessor based architecture. These systems are designed for highly accurate readings on-site
with laboratory precision.
Unique Measuring Technique:
This newly designed technique of measurement incorporates a high
precision measurement circuit, a unique power source and the fastest discharge unit on market.
Extensive filtering and high precision standards are used within the test system. The WR50 series is
capable of precision measurements up to 50A (WR14: 15A).
Operation:
The WR
series of instruments apply a present current level, selected by the user, from
0.025A to 100A. The 50V
1
power source quickly charges the load and the results of the test are
displayed within a few seconds automatically. The results are reported on the easy-to-read, color LCD
display and can be stored or printed.
Compact Design:
The WR50 and the WR14 series of instruments are available in their own rugged
waterproof field cases.
NOTE!
The WR field case is a waterproof design. A pressure regulator activates
when the case is opened to compensate for atmospheric pressure changes.
The WR series (including the WR100) is also available for 19” rack-mount installation.
Advanced Protection:
Upon powering on, the system initializes itself with a self-calibrating, circuit
checking sequence. If any problems are detected during this initialization period, or during operation,
the operator is immediately notified. The system constantly monitors the condition of the transformer
under test. The WR series of instruments have extensive protection built in to the circuitry. This is one of
the many reasons we can extend our warranty to 5 years.
Simple Maintenance:
There is no maintenance required. There is no calibration procedure (no
potentiometers to turn). This is due to the utilization of high precision components in the design.
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WR14: 30V
