
GOSSEN-METRAWATT
29
Reference Conditions
Ambient
Temperature
+ 23
°
C
±
2 K
Relative Humidity
50 %
±
5%
Mains Voltage
230 V
±
1%
Measured Quantity
Frequency
50 Hz
±
0.2%
Measured Quantity
Waveshape
sine
(deviation between effective and rectified value
±
0.5 %)
Influence Variables and Errors
METRATESTER
â
4 Display and Signalling Devices
LCD
Display Range
0 ... 1999 digits, 3½ places
Character Height
18 mm
Overflow
indicated at display with character “1” at left
Excessive Temp. R
ISO
D
appears at display
PE Signal Lamp
Indicates whether or not voltage is present at the mains protective conductor.
METRATESTER
â
5/5-F Display and Signalling Devices
LCD
Display Range
0 ... 1999 digits, 3½ places
Character Height
17 mm and special characters
Overflow
indicated at display with “OL”
Excessive Temp. R
ISO
for long duration short-circuit:
segments “R
ISO
” and “M
W
” blink
PE Signal Lamp
Indicates whether or not voltage is present at the mains protective conductor.
Error Lamp
The red error lamp indicates that limit values have been exceeded during the measurement of
protective conductor or insulation resistance, equivalent leakage, contact or leakage current,
as well as residual current.
Piezoelectric Resonator
In the event that the error lamp lights up and the respectively more critical limit value is
exceeded, the piezoelectric resonator also sounds.
Influence Variable/
Sphere of Influence
Meas. Quantity
Influence Errors
±
... % of measured value
Temperature
indicated influence errors per 10 K temperature change
0 ... 21
°
C and 25 ... 40
°
C
PE resistance
1
all other measuring ranges
0.5
Frequency
49 ... 51 Hz
equiv. leakage current
2
with capacitive load
45 ... 100 Hz
contact current
1