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METREL MI 3125 Short Instructions

METREL MI 3125
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MI 3125 / MI 3125E EurotestCOMBO Quick-test guide
24
2.2.7 Earthing resistance (MI 3125E)
Main earthing arrangements, lightning systems, local earthings, etc can be verified
with the earthing resistance test.
1
Set function
2
Set parameters and limits
High limit resistance sets limit off, 1 ÷ 5
k
3
Connection diagram
4
Press the
TEST
key
5
View results
Displayed results:
R: Earth resistance,
Rp: Resistance of S (potential) probe,
Rc: Resistance of H (current) probe.

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METREL MI 3125 Specifications

General IconGeneral
TypeMultifunction Installation Tester
Insulation ResistanceYes
Continuity TestYes
Loop ImpedanceYes
RCD TestingYes
Voltage MeasurementYes
Frequency MeasurementYes
DisplayLCD
Power Supply6 x 1.5 V AA batteries
Loop Resistance Resolution0.01 Ω
Frequency45 - 65 Hz
Line Voltage Resolution1 V
Insulation Resistance Test Voltage50 V, 100 V, 250 V, 500 V, 1000 V
Insulation Resistance Resolution0.01 MΩ
Continuity Resistance Resolution0.01 Ω
Test Current200 mA
DC VoltageUp to 600 V
Loop Resistance0.0 Ω - 1999 Ω
Line VoltageUp to 550 V
Line Voltage Accuracy±2% ±2 digits
Rated Residual Current10 mA, 30 mA, 100 mA, 300 mA, 500 mA
Insulation Resistance Range0.01 MΩ to 1 TΩ
Continuity Resistance0.0 Ω - 1999 Ω
Dimensions220 x 103 x 55 mm
Operating Temperature-10°C to 50°C
Storage Temperature-20°C to +60°C
Safety StandardsEN 61557
Loop Resistance Accuracy±(5% + 3 digits)

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