User manual

10/ 2008 TESTFOX CC
11

This measuring accuracy applies for temperatures from 18 °C to 28 °C and a
relative air humidity less than 80 %.
7.1 DC voltage ranges
The input resistance is 10 MΩ.
Measuring
range
Resolution Measuring accuracy
Overload
protection
200 V 0.1 V ± (1.0 % of the measured value + 2 digits) 600 V
eff
600 V 1 V ± (1.0 % of the measured value + 2 digits) 600 V
eff
7.2 AC voltage ranges
The input resistance is 10 MΩ in parallel 100 pF.
Measuring
range
Resolution
Measuring accuracy
*1
within the frequency
range 50 Hz - 500 Hz
Overload
protection
200 V 0.1 V ± (1.5 % of the measured value + 5 digits) 600 V
eff
600 V 1 V ± (1.5 % of the measured value + 5 digits) 600 V
eff
7.3 AC current ranges
Measuring
range
Resolution
Measuring accuracy
*1
within
the frequency range 50 Hz - 60 Hz
Overload
protection
40 A 0.1 A ± (1.9 % of the measured value + 10 digits) 600 A
eff
200 A 0,1 A ± (1.9 % of the measured value + 5 digits) 600 A
eff
400 A 1 A ± (1.9 % of the measured value + 5 digits) 600 A
eff
*1
The measured value is obtained by mean value rectication and is displayed
as r.m.s. value. Its calibration is adapted to a sinusoidal curve.
The stated accuracy is specied for conductors that are centrally clamped
by means of the current clamp L (see gure 4 AC current measurement).
For conductors that are not centrally clamped, an additional error of 1 % of
the displayed value has to be considered.
7.4 Resistance measuring range and acoustic continuity test
Overload protection: 600 V
eff
Measuring
range
Resolution Measuring accuracy
Max. open-
circuit voltage
200 Ω 0.1 Ω ± (1,0 % of the measured value + 5 digits) 1.3 V
2 kΩ 1 Ω ± (0.7 % of the measured value + 2 digits) 1.3 V
20 kΩ 10 Ω ± (0.7 % of the measured value + 2 digits) 1.3 V
200 kΩ 100 Ω ± (0.7 % of the measured value + 2 digits) 1.3 V
2 MΩ 1 kΩ ± (1.0 % of the measured value + 2 digits) 1.3 V
20 MΩ 10 kΩ ± (1.9 % of the measured value + 5 digits) 1.3 V
The integrated buzzer sounds if the resistance R is lower than 20 Ω.
The change-over point of the range selection might be already at a value of
1400!
8. Measuring by means of the TESTFOX CC
8.1 Preparing the measurement
Operate and store the TESTFOX CC at the specied storage and operating
temperatures only! Do not permanently expose the device to sunlight.
- Check stated nominal voltage and nominal current on the safety measuring
lines. Nominal voltage and current of the enclosed safety measuring lines
comply with the respective values of the TESTFOX CC.
- Check insulation of the safety measuring lines. If the insulation is damaged,
the safety measuring lines must be replaced immediately.
- Check the safety measuring lines for continuity. If the conductor in the
safety measuring line is interrupted, replace the safety measuring lines
immediately.
- Before selecting another function by means of the sliding switch 7,
disconnect the safety measuring lines from the measuring point.
- Strong sources of interference in the vicinity of the TESTFOX CC might
involve unstable readings and measuring errors.