BEHA UNITEST Telaris Erde Instruction Manual page 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