User Manual

52 GMC-I Messtechnik GmbH
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/R
SL
– / – Temp – /m – W/Wh – A/Hz/thd
5.8 Current measurement
Notes Regarding Current Measurement
• The multimeter may only be operated with installed batteries or re-
chargeable 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-sec-
tions 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.
• When measuring high current values, limit them to maximum 16 A for
30 seconds and allow the multimeter to cool down for 10 minutes be-
tween measurements.
• For purposes of orientation, internal temperature in close proximity to
the jacks is displayed at the right-hand auxiliary display in the 6 A and
10 A or 16 A ranges.
• The input for the current measuring range is equipped with a
fuse link. Use specified fuses only! The fuse must have a break-
ing capacity of at least 30 kA.
• If the fuse for the active current measuring range blows, “FvSE”
appears at the digital display, and an acoustic signal is gener-
ated at the same time.
• If a fuse should blow, eliminate the cause of overload before
placing the multimeter back into service!
• Fuse replacement is described in section 9.3.
• Be absolutely certain that the measuring ranges are not over-
loaded beyond their allowable capacities. Limit values are in-
cluded in section 8, "Technical Data”, in the table entitled
“Measuring Functions and Measuring Ranges” in the “Overload
Capacity” column.
Scope of Functions, Current Measurement, Direct Connection
Scope of Functions, Current Measurement
with Current Clamp Sensor
Scope of Functions, Current Measurement
with Current Clamp Transformer
Function Switch Position Measuring Range
Transformation ratio SEt menu, CliP=OFF
A AC+DC TRMS A 600 μA, 6/60/600 mA, 6 A / 10 (16) A
A DC A /~ 600 μA, 6/60/600 mA, 6 A / 10 (16) A
A AC ~ A /~ 600 μA, 6/60/600 mA, 6 A / 10 (16) A
Hz (A AC) A /~ ... 60 kHz
thd (A AC) A /~
Function Switch Position
Transformation ratio SEt menu, CliP≠ OFF
A AC+DC V
A DC V
A AC V~
Hz (A AC) V~
thd (A AC)
Function Switch Position
Transformation ratio SEt menu, CliP≠ OFF
A AC A /~
Hz (A AC) A /~
thd (A AC) A /~
A AC+DC A
A DC A /~