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20KΩ·m
2.00KΩ·m
~
19.99KΩ·m
0.01KΩ·m
200KΩ·m
20.0KΩ·m
~
199.9KΩ·m
0.1KΩ·m
2000KΩ·m
200KΩ·m
~
3768KΩ·m
1KΩ·m
All technical data are valid listed in earth resistance.
Interval between earth spikes : a
=
1.0m
~
30.0m.
The maximum operation error within the measurement range should not exceed ±30% of the measured basic value,
which is shown in the following table. The operation errors are available for specified operation conditions designated in
IEC61557-1 and the following conditions:
Series interference voltage: in 400 Hz
、
60 Hz
、
50 Hz
、
16
2
3
Hz system frequency or input series interference
voltage by DC voltage through E
(
ES
)
and S terminals. The mean square root value of r.m.s. in series
interference voltage is 3V.
Resistance of auxiliary earth electrode and probe:
4kΩ+100
☓
RE≤50kΩ
Basic Error or
Impact Volume
Reference Range
Specified Working Range
Mark
Related Requirements and
Tests in IEC61557
Testing
Type
basic error
Reference range
A
6.1 in Section 5
R
power voltage
Limit value specified by the
Manufacture
E2
4.2 and 4.3 in Section 1
R
temperature
0ºC and 35ºC
E3
4.2 in Section 1
T
Series interference
voltage
See 4.2 and 4.3
E4
4.2 and 4.3 in Section 5
T