Unitest TELARIS ERDE Bedienungsanleitung Seite 27

The connection sequence must be respected.
Otherwise the instrument will not be able to
carry out the measurement and indicates an
error message:
• the display "Probe" indicates a connection
error of S, E (interruptions, exchange also with
H or E)
• the "Limit I M " display indicates an interruption
of the H connection.
Table 1:
References to evaluate measurement results (in compliance with DIN VDE 0413 Part 7)
Type of the
ground
marshy soil/swamp
arable land/clay
humid sandy soil
dry sandy soil
stony soil
concrete1:5
Table 2:
required max. permissable resistance
0,3 Ω
0,4 Ω
0,5 Ω
0,6 Ω
0,7 Ω
0,8 Ω
0,9 Ω
1,0 Ω
2,0 Ω
3,0 Ω
4,0 Ω
5,0 Ω
Example for table 2:
earth resistance
bar ground connection
3m deep 5m deep
10 Ω 5 Ω
33 Ω 17 Ω
66 Ω 33 Ω
330 Ω 165 Ω
1000 Ω 500 Ω
maximum displayed test value
required max. permissable resistance 1Ω.
maximum displayed test value on Telaris Earth 0,84 Ω.
The procedure is carried out a different loca-
tions and at respectively varying distances "a".
Thus, the composition of the soil for the de-
sired area is examined. Here, a measurement
at larger distances "a" gives more details about
the specific earth resistance in deeper grounds.
earth resistance
flat ground connection
5m long
12 Ω
40 Ω
80 Ω
400 Ω
1200 Ω
160 Ω
0,18 Ω
0,28 Ω
0.37 Ω
0,46 Ω
0,56 Ω
0,65 Ω
0,75 Ω
0,84 Ω
1,85 Ω
2,79 Ω
3,73 Ω
4,67 Ω
Commissioning
10m long
6 Ω
20 Ω
40 Ω
200 Ω
60 Ω
80 Ω
27