3 Introduction
3.1 General
Raytech Digital Winding Resistance meters are the enhanced version winding resistance system
with a most advanced demagnetizing circuit. They are designed for 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
WR100 is capable of precision measurements up to 100A (WR50: 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
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 WR series of instruments are designed for 19” rack-mount installation. The
WR50 and the WR14 series of instrument are although available in their own rugged waterproof
field cases.
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.
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 when
turned on. The WR series have extensive protection built in to the circuitry. This is one of the many
reasons we can extend our warranty to 2 years.
2
WR14: 30V
Instruction Manual Winding Resistance Meter
Type WR100 / WR50 / WR14
Page 12 of 139
