METREL Earth 2/3 User Manual

MI 2126 Earth 2/3 Technical specification
18
5 Technical specification
5.1 Functions
Earth resistance, two-wire method, three-wire method
Measuring range according to EN61557-5 is: 1.77 Ω ÷ 19.99 kΩ.
Display range (Ω) Resolution (Ω)
Accuracy
0.00 ÷ 19.99
0.01
20.0 ÷ 199.9
0.1
200 ÷ 999
1
1.000 k ÷ 1.999 k
1
±(2 % of reading + 10 digits)
2.00 k ÷ 19.99 k
10
±(5 % of reading)
Auxiliary earth electrode resistance R
C
100×R
E
or 50 kΩ (whichever is
lower), indicator only
Probe resistance R
P
100×R
E
or 50 kΩ (whichever is
lower), indicator only
Additional probe resistance error
at R
Cmax
or R
Pmax.
± (10 % of m. r.* + 3 digits)
Additional error at 3 V voltage noise (50 Hz / 60 Hz) ±(5 % of reading + 10 digits)
Automatic noise voltage indication threshold 3 V (<50 Ω, worst case)
Open-terminal test voltage < 40 Va.c.
Test voltage shape sine wave
Test voltage frequency 125 Hz / 150 Hz
Short-circuit test current < 20 mA
Automatic test of curr. and pot. test probe resistance yes
Automatic test of voltage noise yes
Accuracies apply for 1 year in reference conditions. The error in operating conditions
could be at most the error for reference conditions (specified above) +1 % of reading +
2 digits.
*m.r. measuring range

METREL Earth 2/3 Specifications

General

Brand	METREL
Model	Earth 2/3
Category	Test Equipment
Language	English