METREL MI 3102 Manual

EurotestXE

MI 3102

Short instructions

Version 2.2 UK, Code No. 20 750 178

Distributor:

Manufacturer:

METREL d.d.

Ljubljanska cesta 77

1354 Horjul

Slovenia

web site: http://www.metrel.si

e-mail: [email protected]

Mark on your equipment certifies that this equipment meets the requirements of the EU

(European Union) concerning safety and interference causing equipment regulations

No part of this publication may be reproduced or utilized in any form or by any means

without permission in writing from METREL.

Safety and operational considerations

1 Safety and operational considerations

1.1 Warnings

• This document is a supplement to the Instruction manual!

• Before using EurotestXE instrument read the Instruction manual carefully,

otherwise use of the instrument may be dangerous for the operator, for the

instrument or for equipment under test!

• symbol on the instrument means »Read the Instruction manual with

special care«. The symbol requires an action!

• If the test equipment is used in a manner not specified in Instruction manual

the protection provided by the equipment may be impaired!

• Do not use the instrument and accessories if any damage is noticed!

• In case a fuse has blown follow the instructions in Instruction manual 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 procedure is allowed to be carried out

only by a competent authorized person!

• Use only standard or optional test accessories supplied by your distributor!

• Consider that older and some of new optional test accessories compatible

with this instrument meet only overvoltage category CAT III / 300 V! It means

that maximal allowed voltage between test terminals and ground is 300 V!

• Instrument contains rechargeable Ni-Cd or Ni-MH battery cells. The cells

should only be replaced with the same type as defined on the battery

placement label or in Instruction manual. Do not use standard alkaline

battery cells while 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

removing battery compartment cover.

• Do not connect any voltage source on CLAMP CURRENT input. It is intended

only for connection of current clamp with current output. Maximal

continuous input current is 30 mA!

• All normal safety precautions have to be taken in order to avoid risk of

electric shock when working on electrical installations!

Safety and operational considerations

1.2 Battery handling

• When battery cells have to be replaced or before opening battery/fuse

compartment cover, disconnect any measuring accessory connected to the

instrument and power off the instrument, hazardous voltage inside!

• Insert cells correctly, otherwise the instrument will not operate and the battery

could be discharged.

• If the instrument is not used for a long period of time remove the battery from its

compartment.

• Alkaline or rechargeable Ni-Cd or Ni-MH battery cells (size AA) can be used. The

operating hours are given for cells with a nominal capacity of 2100 mAh.

• Do not recharge alkaline battery cells!

The battery is charged whenever the power supply adapter is connected to the

instrument. In-built protection circuits control the charging procedure and assure

maximal battery lifetime. Power supply socket polarity is shown in the figure below.

Power supply socket polarity

Note:

• Use only power supply adapter delivered from manufacturer or distributor of the

test equipment to avoid possible fire or electric shock!

2 Function selector switch and instrument display

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

Legend:

1......Main function name

2......Function or sub-function name

3......Measuring parameters and limit values

4......Result field

In this field the main and sub-results together with the PASS/FAIL/ABORT status

are displayed.

5......Online voltage and output monitor

6......Message field

In this field battery status and warnings/messages related to the actual

measurement are displayed.

Measurements Illumination

3 Measurements

3.1 Illumination

Set function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 Low limit illumination value [∗lux sets

limit off, 0.1 lux ÷20.0 klux]

Positioning diagram

Switch on the LUXmeter probe. Press the

TEST

key.

View results and press the MEM key to save them.

Displayed results:

E: Illumination

Measurements TRMS current

3.2 TRMS current

Set function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 High limit current value [∗mA sets limit

off, 0.1mA ÷100.0 mA]

Connection diagram

Option A 1018

Press the

TEST

key.

View results and press the MEM key to save them.

Displayed results:

I: TRMS current (or TRMS leakage current)

Measurements Resistance to earth

3.3 Resistance to earth

Set function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 High limit resistance to earth value [∗Ω

sets limit off, 1 Ω÷1666 Ω]

Connection diagram

Test connector terminals are used as follows:

 L/L1 black test lead is used for the auxiliary earth electrode (H)

 N/L2 blue test lead is used for the earth electrode (E)

 PE/L3 green test lead is used for the probe (S)

MPEC

Rc Rp RE

d>5d

Press the

TEST

key.

View results and press the MEM key to save them.

Displayed results:

R: Resistance to earth

RC:Auxiliary earth electrode resistance

RP:Probe resistance

Measurements Continuity

3.4 Continuity

Set function

Set sub-function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 LowΩ

 Continuity  High limit resistance

[∗Ω sets limit off, 0.1 Ω÷

20.0 Ω]

Connection diagram

LowΩContinuity

PCC1

PCC2

PCC3

N/L2

PE/L3

L/L1

MPEC

MPEC....Main Potential Equilizing Collector

PCC....Protection Conductor Collector

prolongation lead

PCC1

PCC2

PCC3

MPEC

MPEC....Main Potential Equilizing Collector

PCC....Protection Conductor Collector

prolongation lead

N/L2

PE/L3L/L1

Press the

TEST

key. Press the

TEST

key to start. Press the

TEST

key

again to stop measurement.

View results and press the MEM key to save them.

Displayed results:

R: Main LowΩresistance result

R+: LowΩresistance sub-result with positive voltage

at L terminal

R-: LowΩresistance sub-result with positive voltage

at N terminal

Displayed results:

R: Main continuity resistance result

Measurements Insulation resistance

3.5 Insulation resistance

Set function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 Nominal test voltage

[100 VDC ÷1000 VDC]

 Low limit resistance value

[∗MΩsets limit off, 0.01 MΩ÷200 MΩ]

Connection diagram

switched off

mains voltage closed

switches

disconnec-

ted loads

N/L2

L/L1

PE/L3

Press and hold the

TEST

key until result is stabilised.

View results and press the MEM key to save them.

Displayed results:

R: Insulation resistance

Um: Instrument test voltage

Measurements Insulation monitoring in IT systems

3.6 Insulation monitoring in IT systems

Set function

Set sub-function

Set parameters and limits

Earth RCD

Sensor

Continuity

Insulation Loop

Line

Volt.

 First fault

current

 IMD ckecking

 First fault current

high limit value

[∗F sets limit off,

3.0 mA ÷5.0 mA]

Connection diagram

IMD

IT supply

N/L2

L/L1

PE/L3

ISFL sub-function:

Press the

TEST

key.

IMD check sub-function:

Press the

TEST

key. Use the key to decrease

insulation resistance until IMD alarms bad insulation.

Use the key to select second live line (e.g. L2).

Use the key to decrease insulation resistance until

IMD alarms bad insulation.

Press the

TEST

key again to complete the test.

View results and press the MEM key to save them.

Displayed results:

Isc1: First fault current between L1 and PE

Isc2: First fault current between L2 and PE

Displayed results:

R1: Fault treshold insulation resistance (L1-PE)

R2: Fault treshold insulation resistance (L2-PE)

I1: Calculated first fault leakage current for treshold

insulation (L1-PE)

I2: Calculated first fault leakage current for treshold

insulation (L2-PE)

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