User Manual

40 GMC-I Gossen-Metrawatt GmbH
V/Hz, Ω, Temperature, and A/Hz Measurements
5.7 Current Measurement
Notes Regarding Current Measurement
• The multimeter may only be operated with installed batteries or
rechargeable batteries. Dangerous currents are otherwise not
indicated, and the instrument may be damaged.
• Set up the measuring circuit in a mechanically secure fashion,
and secure it against inadvertent breaks. Select conductor
cross-sections and lay out connections such that they do not
overheat.
• An intermittent acoustic signal warns of current greater than
10 A. An continuous acoustic signal warns of current greater
than 16 A.
• The input for the current measuring range is equipped with a
fuse link. Maximum permissible voltage for the measuring
circuit (= rated voltage of the fuse) is 1000 V AC/DC.
Use specified fuses only! The fuse must have a breaking
capacity of at least 30 kA.
• If the fuse for the active current measuring range blows, “FUSE ”
appears at the digital display, and an acoustic signal is
generated at the same time.
• If a fuse should blow, eliminate the cause of overload before
placing the instrument back into service!
• Fuse replacement is described in chapter 9.3.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit values are
included in chapter 8, “Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the “Over-
load Capacity” column.
Scope of Functions, Current Measurement, Direct Connection
Scope of Functions, Current Measurement via Clip-On Current Sensor
Function METRAHIT⏐
X-
TRA /
O
UTDOOR
METRAHIT⏐
T
ECH
METRAHIT⏐
P
RO
METRAHIT⏐
B
ASE
A AC / Hz ~ 100 μA
1/10/100 mA
1 A / 10 (16) A
10/100 mA
1 A / 10 (16) A
1 A / 10 (16) A
—
A AC+DC TRMS 100 μA
1/10/100 mA
1A / 10 (16) A
10/100 mA
1A / 10 (16) A
1 A / 10 (16) A
—
A DC 100 μA
1/10/100 mA
1A / 10 (16) A
10/100 mA
1A / 10 (16) A
1 A / 10 (16) A
—
1000 V fuse
•••—
Function METRAHIT⏐
X-
TRA /
OUTDOOR
METRAHIT⏐
T
ECH
METRAHIT⏐
P
RO
METRAHIT⏐
B
ASE
Transformation
Factor
— • — •
A AC / Hz
— • — •
A AC+DC
— • — •
A DC
— • — •
Hz (A AC)
... 30 kHz ... 30 kHz ... 30 kHz ... 30 kHz