37
Gossen Metrawatt GmbH
V/Hz,
, Temperature,
and A/Hz Measurements
7.7 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.
• The METRAHIT EU PRO / E
SPECIAL
multimeter does not have a fuse for
the current measuring range. It’s designed for measurements in cur
-
rent transformer circuits and is approved for measuring category
600 V CAT II.
• 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.
• 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 plac
-
ing the instrument back into service!
• Fuse replacement is described in chapter 11.3.
• Be absolutely certain that the measuring ranges are not
overloaded beyond their allowable capacities. Limit values are in
-
cluded in chapter 10, “Technical Data”, in the table entitled “Mea
-
suring Functions and Measuring Ranges” in the “Overload
Capacity” column.
Scope of Functions, Current Measurement, Direct Connection
* )
Special model without fuse for measuring-current transformer
Scope of Functions, Current Measurement via Current Clamp Sensors
Scope of Functions for Current Measurement with Current Clamps Transformer
Function
METRAHIT
PM XTRA
PM TUNE
E
XTRA
METRAHIT
PM TECH
E
TECH
METRAHIT EU
PRO
E
SPECIAL
A AC / Hz
~
600
A
6/60/600 mA
6 A / 10 (16) A
60/600 mA
6 A / 10 (16) A
6 A / 10 (16) A
A AC+DC TRMS
600
A
6/60/600 mA
6 A / 10 (16) A
60/600 mA
6 A / 10 (16) A
6 A / 10 (16) A
A DC
600
A
6/60/600 mA
6 A / 10 (16) A
60/600 mA
6A / 10 (16) A
6 A / 10 (16) A
1000 V fuse
—
* )
Function
METRAHIT
PM XTRA
PM TUNE
E
XTRA
METRAHIT
PM TECH
E
TECH
METRAHIT EU
PRO
E
SPECIAL
Transformation
Factor
A AC
/ Hz
A AC+DC
A DC
Hz (A AC)
... 60 kHz
... 60 kHz
... 60 kHz
Function
METRAHIT
PM XTRA
PM TUNE
E
XTRA
METRAHIT
PM TECH
E
TECH
METRAHIT EU
PRO
E
SPECIAL
Transformation Factor
A AC
/ Hz
Hz (A AC)
... 60 kHz
... 60 kHz
... 60 kHz
