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METREL MI 3125 User Manual

METREL MI 3125
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MI 3125 EurotestCOMBO Testing RCD
38
Displayed results:
x1 ........Step 1 trip-out time ( IΔN, 0º),
x1 ........Step 2 trip-out time (IΔN, 180º),
x2 ........Step 3 trip-out time (2×IΔN, 0º),
x2 ........Step 4 trip-out time (2×IΔN, 180º),
x5 ........Step 5 trip-out time (5×IΔN, 0º),
x5 ........Step 6 trip-out time (5×IΔN, 180º),
.......Step 7 trip-out time (½×IΔN, 0º),
.......Step 8 trip-out time (½×IΔN, 180º),
I .........Step 9 trip-out current (0º),
I .........Step10 trip-out current (180º),
Uc........Contact voltage for rated IΔN.
Notes:
The autotest sequence is immediately stopped if any incorrect condition is
detected, e.g. excessive Uc or trip-out time out of bounds.
Auto test is finished without x5 tests in case of testing the RCD type A with rated
residual currents of IΔn = 300 mA, 500 mA, and 1000 mA. In this case auto test
result passes if all other results pass, and indications for x5 are omitted.
Tests for sensitivity (I
Δ
, steps 9 and 10) are omitted for selective type RCD.

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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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