35
CALIBRATING TECHNIQUE
CALIBRATING OPERATIONS
List of the calibration operations of the device.
Name of the operation
Test type
Quali
fi
cation test
periodic
External survey and approbation
yes
yes
De
fi
nition of an absolute error of insulation resistance
measurement yes
yes
De
fi
nition of an absolute error of loop resistance
measurement
yes
yes
De
fi
nition of an absolute error of a cable insulation
fault location de
fi
nition
yes
yes
De
fi
nition of an absolute error of the cable electric
capacity measurement
yes
yes
De
fi
nition of a measuring pulse parameters
yes
yes
De
fi
nition of the distance measurement error by the
TDR
yes
yes
De
fi
nition of blocked loss at TDR measurements
yes
yes
CALIBRATING MEANS
The list of means necessary for calibration carrying out
Monitor name
Type
Note
Resistance box
range 0,001 Ohm
÷
100 Ohm with accuracy 0,001 Ohm
Resistance box
Р
40103
ТУ
25-7762.003-86, accuracy rating 0,1;
range 1 MOhm
÷
10 GOhm
Capacitance box
Р
5025
Accuracy range 0,1, range 100 pF
÷
100 mkF
Oscilloscope
С
1-104
Frequency meter
Ч
3-34
Pulse generator
Г
5-56
You can use another calibration means which are satisfying the requirements of the present
technique.
CALIBRATING CONDITIONS
You must to calibrate the device according to the following conditions:
Ambient
temperature
(20
±
5)
0
С
;
Relative
humidity
30
÷
90 %;
Atmospheric
pressure
84
÷
106 kPa;
Accumulator
completely
charged.
The measurement facilities must be prepared for the working according to operating
instruction
