VR2250
Page 5 of 131
1. SAFETY PRECAUTIONS AND PROCEDURES
1.1. FORWARDS
This apparatus conforms with safety standards EN61557 and EN 61010-1 relating to
electronic measuring instruments.
CAUTION
For your own safety as well as that of the apparatus you are recommended to
follow the procedures described in this instruction manual and carefully read all
the notes preceded by the symbol
.
Strictly keep to the following instructions before and during measurements:
Do not take measurements in wet environments or dusty places.
Do not take measurements in environments with explosive gas or fuels.
Keep yourself insulated from the object under test waiting for measuring.
Avoid any contact with exposed metal parts, ends of test leads not in use, circuits, etc.
Do not take any measurement in case of unusual conditions of the instrument such as
deformation, breakage, leakage of substances, absence of display reading etc.
Do not use the External power supply adapter (optional code MAR####) if you notice
deformation, or breakage in the case, in the wire or in the plugs.
Pay careful attention when measuring voltages exceeding 25V in particular places
(building yards, swimming pools, etc.) and 50V in ordinary places because of the risk of
electric shock.
Use only cables and accessories approved by Martindale Electric.
The following symbols are used in this manual:
Caution: refer to the instructions reported in this manual; improper use may
damage the apparatus or its components.
Ο
AC Voltage or Current.
Unidirectional pulsating Voltage or Current.
Rotary switch of the instrument.
1.2. PRELIMINARY
INSTRUCTION
This instrument has been designed for use in environments with a pollution level 2 and
up to (and no more than) 2000 meters altitude.
It can be used for Safety Test on Installation with Over voltage Category III 300V~
(phase to earth) and for
voltage and current
measurements on installations with over
voltage category III 600 V~ phase to phase / 300 V~ phase to earth or CATII 350 V
phase to earth.
