User manual

GMC-I Messtechnik GmbH 23
Influencing Quantities and Influence Error
Display and Indicating Devices
LCD
Display range 0  1999 digits, 3½ places
Character height 17 mm and special characters
Overflow Indicated by displaying “OL”
Overtemp. R
ISO
In case of long-term short-circuit:
“R
ISO
” and “M” segments blink
PE Indicator Lamp
Indicates whether or not voltage is present.
Error Lamp
The red error lamp indicates exceeded limit values when measuring protective conductor
current, insulation resistance, equivalent leakage current, contact current, leakage current
and differential current.
Piezo Buzzer
In the event that the error lamp lights up in order to indicate that the respective critical limit
value has been exceeded, the buzzer also generates an acoustic signal.
Power Supply
Line voltage 230 V / 50 Hz
Throughput rating Max. 3700 VA, depending upon load at the mains outlet
Influencing Quantity /
Sphere of Influence
Designation
per DIN VDE
0404
Influence Error
  % of the measured values
Change of position E1
—
Change to test equipment supply
voltage
E2
2.5
Temperature fluctuation
E3
Specified influence error valid starting with
temperature changes as of 10 K:
0  21  C and 25  40 C
1 for protective conductor resistance
0.5 for all other measuring ranges
Amount of current at DUT E4
2.5
Low frequency magnetic fields E5
2.5
DUT impedance I6
2.5
Capacitance during insulation
measurement
E7
2.5
Waveshape of measured current
E8
49  51 Hz
2 with capacitive load (for equiv. leakage current)
45  100 Hz
1 (for contact current)
2.5 for all other measuring ranges