METREL MI 3125 User Manual

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),
x½ .......Step 7 trip-out time (½×IΔN, 0º),
x½ .......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.

METREL MI 3125 Specifications

General

Type	Multifunction Installation Tester
Insulation Resistance	Yes
Continuity Test	Yes
Loop Impedance	Yes
RCD Testing	Yes
Voltage Measurement	Yes
Frequency Measurement	Yes
Display	LCD
Power Supply	6 x 1.5 V AA batteries
Loop Resistance Resolution	0.01 Ω
Frequency	45 - 65 Hz
Line Voltage Resolution	1 V
Insulation Resistance Test Voltage	50 V, 100 V, 250 V, 500 V, 1000 V
Insulation Resistance Resolution	0.01 MΩ
Continuity Resistance Resolution	0.01 Ω
Test Current	200 mA
DC Voltage	Up to 600 V
Loop Resistance	0.0 Ω - 1999 Ω
Line Voltage	Up to 550 V
Line Voltage Accuracy	±2% ±2 digits
Rated Residual Current	10 mA, 30 mA, 100 mA, 300 mA, 500 mA
Insulation Resistance Range	0.01 MΩ to 1 TΩ
Continuity Resistance	0.0 Ω - 1999 Ω
Dimensions	220 x 103 x 55 mm
Operating Temperature	-10°C to 50°C
Storage Temperature	-20°C to +60°C
Safety Standards	EN 61557
Loop Resistance Accuracy	±(5% + 3 digits)