METREL MI 3125 User Manual

MI 3125 EurotestCOMBO Technical specification
49
7 Technical specifications
7.1 Insulation resistance
Insulation resistance (nominal voltages 50 V
DC
, 100 V
DC
and 250 V
DC
)
Measuring range according to EN61557 is 0.25 MΩ ÷ 199.9 MΩ.
Measuring range (MΩ) Resolution (MΩ)
Accuracy
0.00 ÷ 19.99
0.01
±(5 % of reading + 3 digits)
20.0 ÷ 99.9 ±(10 % of reading)
100.0 ÷ 199.9
0.1
±(20 % of reading)
Insulation resistance (nominal voltages 500 V
DC
and 1000 V
DC
)
Measuring range according to EN61557 is 0.15 MΩ ÷ 1 GΩ.
Measuring range (Ω) Resolution (MΩ)
Accuracy
0.00M ÷ 19.99M
0.01
±(5 % of reading + 3 digits)
20.0M ÷ 199.9M
0.1
±(5 % of reading)
200M ÷ 999M
1
±(10 % of reading)
Voltage
Measuring range (V) Resolution (V) Accuracy
0 ÷ 1200
1
±(3 % of reading + 3 digits)
Nominal voltages ...............................50 V
DC
, 100 V
DC
, 250 V
DC
, 500 V
DC
, 1000 V
DC
Open circuit voltage ...........................-0 % / +20 % of nominal voltage
Measuring current..............................min. 1 mA at R
N
=U
N
×1 kΩ/V
Short circuit current........................... max. 3 mA
The number of possible tests............ > 1200, with a fully charged battery
Auto discharge after test.
Specified accuracy is valid if universal test cable is used while it is valid up to 100 M
Ω if
tip commander is used.
Specified accuracy is valid up to 100 MΩ if relative humidity > 85 %.
In case the instrument gets moistened, the results could be impaired. In such case, it is
recommended to dry the instrument and accessories for at least 24 hours.
The error in operating conditions could be at most the error for reference conditions
(specified in the manual for each function)
±5 % of measured value.
7.2 Continuity
7.2.1 Resistance R LOWΩ
Measuring range according to EN61557 is 0.16
Ω ÷ 1999 Ω.
Measuring range R (
Ω) Resolution (Ω)
Accuracy
0.00 ÷ 19.99
0.01
±(3 % of reading + 3 digits)
20.0 ÷ 199.9
0.1
200 ÷ 1999
1
±(5 % of reading)

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)