ADWEL DRM-100, Руководство пользователя, Страница: 10 / 39

Introduction
Page 1
Introduction
The DRM-100 (
Digital Resistance Meter
) is used to
measure resistance of contacts on de-energized devices
such as circuit breakers, switches and bus bars as found in
energized high-voltage substations.
Application
The DRM-100 instrument makes a 4 terminal
measurement by passing DC current through the unknown
resistance. The resulting voltage drop is measured and
used to calculate resistance. (True 4 terminal Kelvin
measurement method.)
The operator moves the test cables from phase to phase
until all three are tested.
NOTE:
Users of the equipment should follow the
instructions to handle the equipment properly to avoid any
accidents or serious damage.
Features
•
Up to 100 Amps of pure DC current is smoothly
ramped up and down automatically to prevent current
transients that can lead to unwanted operation of
protection relays. Output current is preset by operator
Chapter
1