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WR14 / WR50-12/13 Winding Resistance Meter Instruction Manual
Version 3.03
SAFETY PRECAUTIONS
The following safety precautions must be observed during all phases of operation, service and repair of
this instrument. By purchasing this equipment, the purchaser assumes all liability for the operation and
use of this equipment. The intended use of the instrument, its design and manufacture, is to be
conducted within the precautions or other specific warnings located within this manual. Failure to comply
with these precautions and other specific warnings violates safety standards of design, manufacture,
and intended use. Raytech and its affiliates assume no liability for the operation and use of this
equipment.
SAFE OPERATION:
Only qualified, knowledgeable persons should be permitted or attempt to operate this test equipment.
All test personnel should fully familiarize themselves with the correct application and operation of this
and all test equipment prior to operation. Persons directly and indirectly engaged in the operation of this
test equipment should keep clear of all high voltage apparatus while conducting tests and
measurements.
BEFORE APPLYING POWER:
Read this manual carefully before operating the system. The WR14 is battery operated, the WR50-12
and the WR50-13 are line operated. They operate from a wide range of power input from 90 to 264Vac
and 47…63Hz with automatic ranging.
GROUND THE INSTRUMENT:
The power cord supplied with the equipment must be connected an electrical receptacle with an
electrically grounded terminal (Earthed Ground). To minimize shock hazard, the Ground Terminal on the
instrument must be properly connected to an Earth grounded point. In many cases, the quality of the
safety ground terminal provided by the power cord does not fulfil the safety requirements.
Non-grounded instruments are dangerous and may cause Personnel and instrument damage.
KEEP AWAY FROM LIVE CIRCUITS:
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must be made by qualified service personnel. Do not replace components with the power
cable connected. To avoid injuries, always disconnect power, discharge circuits, and remove external
voltage sources before touching components.
WARNING!
Never connect the instrument to an energized transformer.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE:
Do not operate the instrument in the presence of flammable gases or fumes.
DO NOT SUBSTITUTE PARTS OR MODIFY INSTRUMENT:
Because of the danger of introducing additional hazards, do not install substitute parts or perform any
unauthorized modification to the instrument. Return the instrument to a Raytech service department for
service to ensure proper operation and that safety features are maintained.
Instruments, which appear damaged or defective, should be made inoperative and secured against
unintended operation until they can be repaired by qualified service personnel.
