METREL MI 3125 User Manual

MI 3125 InstaltestCOMBO Warnings and notes
6
2 Safety and operational considerations
2.1 Warnings and notes
In order to maintain the highest level of operator safety while carrying out various tests
and measurements, Metrel recommends keeping your Instaltest instruments in good
condition and undamaged. When using the instrument, consider the following general
warnings:
 The symbol on the instrument means »Read the Instruction manual
with special care for safe operation«. The symbol requires an action!
 If the test equipment is used in a manner not specified in this user manual,
the protection provided by the equipment could be impaired!
 Read this user manual carefully, otherwise the use of the instrument may
be dangerous for the operator, the instrument or for the equipment under
test!
 Do not use the instrument or any of the accessories if any damage is
noticed!
 If a fuse blows in the instrument, follow the instructions in this manual in
order to replace it!
 Consider all generally known precautions in order to avoid risk of electric
shock while dealing with hazardous voltages!
 Do not use the instrument in supply systems with voltages higher than
550 V!
 Service intervention or adjustment is only allowed to be carried out by a
competent authorized personnel!
 Use only standard or optional test accessories supplied by your
distributor!
 Consider that older accessories and some of the new optional test
accessories compatible with this instrument only meet CAT III / 300 V
overvoltage safety rating! This means that maximal allowed voltage
between test terminals and ground is 300 V!
 The instrument comes supplied with rechargeable Ni-Cd or Ni-MH battery
cells. The cells should only be replaced with the same type as defined on
the battery compartment label or as described in this manual. Do not use
standard alkaline battery cells while the power supply adapter is
connected, otherwise they may explode!
 Hazardous voltages exist inside the instrument. Disconnect all test leads,
remove the power supply cable and switch off the instrument before
 All normal safety precautions must be taken in order to avoid risk of
electric shock while working on electrical installations!

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)