MD 9070 Insulation/Continuity Digital Multimeter
Safety
4
1 SAFETY
This manual contains information and warnings that must be followed for operating the
instrument safely and maintaining the instrument in a safe operating condition. If the
instrument is used in a manner not specified by the manufacturer, the protection provided
by the instrument may be impaired. The meter is intended only for indoor use.
TERMS IN THIS MANUAL
WARNING
identifies conditions and actions that could result in serious injury or even
death to the user.
CAUTION
identifies conditions and actions that could cause damage or malfunction in
the instrument.
INFORMATION ABOUT MEASUREMENT CATEGORIES
MEASUREMENT CATEGORY IV (CAT IV)
is applicable to test and measuring circuits
connected at the source of the building’s low-voltage MAINS installation. Examples are
measurements on devices installed before the main fuse or circuit breaker in the building
installation.
MEASUREMENT CATEGORY III (CAT III)
is applicable to test and measuring circuits
connected to the distribution part of the building’s low-voltage MAINS installation.
Examples are measurements on distribution boards (including secondary meters), circuit
breakers, wiring, including cables, bus bars, junction boxes, switches and socket-outlets
in the fixed installation, and equipment for industrial use and some other equipment such
as stationary motors with permanent connection to the fixed installation.
MEASUREMENT CATEGORY II (CAT II)
is applicable to test and measuring circuits
connected directly to utilization points (socket outlets and similar points) of the low-voltage
MAINS installation. Examples are measurements on MAINS CIRCUITS of household
appliances, portable tools and similar equipment.
INTERNATIONAL ELECTRICAL SYMBOLS
!
Caution! Refer to the explanation in this Manual!
Caution! Risk of electric shock!
Earth (Ground).
Double Insulation or Reinforced insulation.
Fuse.
AC
– Alternating Current.
DC
– Direct Current.
The instrument is protected throughout by Double Insulation per IEC/UL/EN61010-1 Ed.
3.0, IEC/EN61010-2-030 Ed. 1.0, IEC/EN61010-2-033 Ed. 1.0, IEC/UL/EN61010-031 Ed.
1.1 and CAN/CSA-C22.2 No. 61010-1-12 Ed. 3.0 to Measurement CAT-III 1kV and CAT-
IV 600V, AC & DC. All input terminals are also rated to such Measurement Categories
requirements.
The instrument also meets the relevant Parts of EN61557 for CE requirements, and are
not certified by UL or ETL. In particular, Part 1 Ed. 2.0 General requirements, Part 2 Ed.
2.0 Insulation Resistance and Part 4 Ed. 2.0 Resistance of earth connection and
equipotential bonding, where applicable.
