User Manual

28 GOSSEN METRAWATT GMBH
Influence Variables and Errors
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 “MΩ” 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.
Power Supply
Mains Voltage 230 V/50 Hz
Throughput max. 3700 VA, dependent upon load at mains outlet
Influence Variable/
Sphere of Influence
Designation
per
DIN VDE 0404
Influence Errors
± ... % of measured value
Change in position E1 —
Change in supply voltage to the test
device
E2 2.5
Temperature fluctuation
E3
Indicated influence errors per 10 K temperature change:
0 … 21
°C and 25 … 40 °C 1 with PE resistance
0.5 all other measuring ranges
Current at device under test E4 2.5
Low frequency magnetic fields E5 2.5
DUT impedance E6 2.5
Capacitance during insulation
measurement
E7
2.5
Waveshape of the measured current
E8
49 … 51 Hz 2 with capacitive load (with equivalent leakage current)
45 … 100 Hz 1 (with contact current)
2,5 all other measuring ranges