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1.
GENERAL INSTRUCTIONS
You have just purchased a discharger tester / megohmmeter and we thank you for your
confidence in us.
This instrument complies with IEC safety standard 61010-1 + A2, dealing with electronic
measurements. If you want to obtain the best service, please read these instructions
carefully and respect usage precautions.
1.1.
Precautions and safety measures
1.1.1. Before use
- The surge arrester support clamp must not be used on live circuits
- The surge arrester tester was designed for use indoors in an environment with a degree
of pollution 2, altitude > 2000 m, temperature between 0°C and 45°C, and relative
humidity 80 % up to 31°C.
It can be used with its probe and its lead in category ΙΙΙ installations, with voltages which
-
never exceed 300 V in relation to the earth.
- The surge arrester support unit must not be connected to live circuits.
- Definition of installation categories according to IEC standard 664 :
CAT I:
Category I equipment is equipment which can be connected to circuits in
which measurements are taken to limit transient voltage surges to an
appropriate low level.
Example: protected electronic circuits
CAT II : Category II equipment is energy consuming equipment powered via a
permanent installation.
Example: household appliance and portable tool power supplies
CAT III : Category III equipment is permanent installation equipment and equipment
subject to special specifications, for reasons of reliability and availability.
Example: industrial machinery or instrument power supplies
CAT IV : Category IV equipment is used at the installation feed point.
Example: power feeder
•
The user should respect normal safety rules when he uses the discharger tester /
megohmmeter, in order to :
- protect himself against dangers due to electrical current,
- protect the instrument against any false maneuvers.
•
The cables and connection accessories used must satisfy IEC standard 61010-2-
031 + A2 and must be designed for a rated voltage and overvoltage category at
least equal to the values for the circuits on which the measurements are made.
This instrument gives a continued voltage in excess of 500 V on the
200 Mohm calibre and on the lightning arrester calibre test.
Never touch the probe tip when the probe is activated.
8
Chapter II
Discharger tester
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