METREL MI 3125 User Manual

MI 3125 EurotestCOMBO Technical specification
50
Open-circuit voltage...........................6.5 VDC ÷ 9 VDC
Measuring current..............................min. 200 mA into load resistance of 2 Ω
Test lead compensation.....................up to 5 Ω
The number of possible tests ............> 2000, with a fully charged battery
Automatic polarity reversal of the test voltage.
7.3 RCD testing
7.3.1 General data
Nominal residual current (A,AC) ........10 mA, 30 mA, 100 mA, 300 mA, 500 mA,
1000 mA
Nominal residual current accuracy.....-0 / +0.1⋅IΔ; IΔ = IΔN, 2×IΔN, 5×IΔN
-0.1⋅IΔ / +0; IΔ = 0.5×IΔN
AS / NZ selected: ± 5 %
Test current shape.............................Sine-wave (AC), pulsed (A)
DC offset for pulsed test current ........6 mA (typical)
RCD type ...........................................G (non-delayed), S (time-delayed)
Test current starting polarity ............. 0 º or 180 º
Voltage range ....................................50 V ÷ 264 V (45 Hz ÷ 65 Hz)
IΔN × 1/2 IΔN × 1 IΔN × 2 IΔN × 5 RCD IΔ
IΔN (mA)
AC A AC A AC A AC A AC A
10 5 3.5 10 20 20 40 50 100
9 9
30 15 10.5 30 42 60 84 150 212
9 9
100 50 35 100 141 200 282 500 707
9 9
300 150 105 300 424 600 848 1500 n.a.
9 9
500 250 175 500 707 1000 1410 2500 n.a.
9 9
1000 500 350 1000 1410 2000 n.a. n.a. n.a.
9 9
n.a......................................................not applicable
AC type..............................................sine wave test current
A type…… .........................................pulsed current
7.3.2 Contact voltage RCD-Uc
Measuring range according to EN61557 is 20.0 V ÷ 31.0V for limit contact voltage 25V
Measuring range according to EN61557 is 20.0 V ÷ 62.0V for limit contact voltage 50V
Measuring range (V) Resolution (V) Accuracy
0.0 ÷ 19.9
0.1
(-0 % / +15 %) of reading ± 10 digits
20.0 ÷ 99.9
(-0 % / +15 %) of reading
The accuracy is valid if mains voltage is stabile during the measurement and PE
terminal is free of interfering voltages.
Test current ...................................... max. 0.5×I
ΔN
Limit contact voltage ......................... 25 V, 50 V
Specified accuracy is valid for complete operating range.

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)