6
Ground Resistance Testers Models 6422 & 6424
1. INTRODUCTION
Thank you for purchasing an AEMC
®
Instruments
Ground Tester Model 6422 or
6424
.
For the best results from your instrument and for your safety, you must read the
enclosed operating instructions carefully and comply with the precautions for use.
Only qualified and trained operators should use this product.
Symbols and Definitions
CAUTION - Risk of Danger!
Indicates a
WARNING
. Whenever this symbol
is present, the operator must refer to the user manual before operation
CAUTION -
Indicates a risk of electric shock
. The voltage at the parts
marked with this symbol may be dangerous
Indicates important information to acknowledge
Ground/Earth
Current Clamp
The product has been declared recyclable
Battery
This product complies with the Low Voltage & Electromagnetic Compatibility
European directives (73/23/CEE & 89/336/CEE)
In the European Union, this product is subject to a separate collection
system for recycling electrical and electronic components in accordance with
directive WEEE 2002/96/EC
Definition of Measurement Categories (CAT)
CAT IV
corresponds to measurements performed at the primary electrical supply
(< 1000 V).
Example: primary overcurrent protection devices, ripple control units, and
meters.
CAT III
corresponds to measurements performed in the building installation at the
distribution level.
Example: hardwired equipment in fixed installation and circuit breakers.
CAT II
corresponds to measurements performed on circuits directly connected to
the electrical distribution system.
Example: measurements on household appliances and portable tools.
