METREL MI 3125 User Manual

MI 3125 InstaltestCOMBO Table of contents
4
6 Maintenance..........................................................................................................47
6.1 Fuse replacement............................................................................................47
6.2 Cleaning ..........................................................................................................47
6.3 Periodic calibration ..........................................................................................47
6.4 Upgrading the instrument ................................................................................47
6.5 Service ............................................................................................................48
7 Technical specifications ......................................................................................49
7.1 Insulation resistance........................................................................................49
7.2 Continuity ........................................................................................................49
7.2.1 Resistance R LOW Ω ........................................................................................... 49
7.3 RCD testing .....................................................................................................50
7.3.1 General data ....................................................................................................... 50
7.3.2 Contact voltage RCD-Uc..................................................................................... 50
7.3.3 Trip-out time ........................................................................................................ 51
7.3.4 Trip-out current.................................................................................................... 51
7.4 Fault loop impedance and prospective fault current ........................................51
7.4.1 No disconnecting device or FUSE selected ........................................................ 51
7.4.2 RCD selected ...................................................................................................... 52
7.5 Line impedance and prospective short-circuit current .....................................52
7.6 Socket test (RLN, RLPE, RNPE, RPE)............................................................53
7.7 Voltage, frequency, and phase rotation...........................................................53
7.7.1 Phase rotation ..................................................................................................... 53
7.7.2 Voltage ................................................................................................................ 53
7.7.3 Frequency ........................................................................................................... 53
7.7.4 Online terminal voltage monitor .......................................................................... 54
7.8 General data....................................................................................................54
A Appendix A - Fuse table.......................................................................................55
A.1 Fuse table - IPSC ............................................................................................55
B Appendix B - Accessories for specific measurements .....................................58

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)