METREL MI 3125 User Manual

MI 3125 EurotestCOMBO PE test terminal
45
5.9 PE test terminal
It can happen that a dangerous voltage is applied to the PE wire or other accessible
metal parts. This is a very dangerous situation since the PE wire and MPEs are
considered to be earthed. An often reason for this fault is incorrect wiring (see examples
below).
When touching the TEST key in all functions that require mains supply the user
automatically performs this test.
Examples for application of PE test terminal
L1
N
PE
Reversed phase and
protection conductors!
T MOST DANGEROUS
SITUATION!
HE
Figure 5.37: Reversed L and PE conductors (application of plug commander)
L1
N
Reversed phase and
protection conductors!
MOST DANGEROUS
SITUATION!
PE
LPEN
L
/
L
1
N
/
L
2
P
E
/
L
3
Figure 5.38: Reversed L and PE conductors (application of universal test cable)

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)