GMC METRATESTER 4 Operating Instructions Manual page 29

Reference Conditions
Ambient
Temperature
Relative Humidity
Mains Voltage
Measured Quantity
Frequency
Measured Quantity
Waveshape
Influence Variables and Errors
Influence Variable/
Sphere of Influence
Temperature
° °
0 ... 21 C and 25 ... 40
Frequency
49 ... 51 Hz
45 ... 100 Hz
â
METRATESTER 4 Display and Signalling Devices
LCD
Display Range
Character Height
Overflow
Excessive Temp. R
ISO
PE Signal Lamp
Indicates whether or not voltage is present at the mains protective conductor.
â
METRATESTER 5/5-F Display and Signalling Devices
LCD
Display Range
Character Height
Overflow
Excessive Temp. R
ISO
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.
GOSSEN-METRAWATT
+23 ° C ± 2 K
50% ± 5%
230 V ± 1%
50 Hz ± 0.2%
sine
(deviation between effective and rectified value ± 0.5%)
Meas. Quantity
indicated influence errors per 10 K temperature change
PE resistance
C
all other measuring ranges
equiv. leakage current
contact current
0 ... 1999 digits, 3½ places
18 mm
indicated at display with character "1" at left
D appears at display
0 ... 1999 digits, 3½ places
17 mm and special characters
indicated at display with "OL"
for long duration short-circuit:
segments "R
ISO
" and "M W " blink
Influence Errors
± ... % of measured value
1
0.5
with capacitive load
2
1
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