Sonel MPI-505 Manuale utente

OPERATING MANUAL

METER FOR ELECTRICAL INSTALLATION

PARAMETERS

MPI-505

SONEL SA

ul. Wokulskiego 11

58-100 Świdnica

Version 1.03 20.08.2014

OPERATING MANUAL MPI-505 version 1.03

The MPI-505 meter is a modern, easy and safe measuring device. Please acquaint yourself with the

present manual in order to avoid measuring errors and prevent possible problems related to operation

of the meter.

OPERATING MANUAL MPI-505 version 1.03

CONTENTS

1SAFETY....................................................................................................................5

2MEASUREMENTS..................................................................................................6

2.1 SELECTION OF GENERAL MEASUREMENT PARAMETERS.........................................6

2.2 REMEMBERING THE LAST MEASUREMENT RESULT ................................................7

2.3 MEASUREMENT OF ALTERNATING VOLTAGE (AC) ................................................7

2.4 CHECKING THE CORRECTNESS OF PE (PROTECTIVE EARTH)CONNECTIONS...........8

2.5 MEASUREMENT OF FAULT LOOP PARAMETERS ......................................................8

2.5.1 Selection of measurement parameters ...........................................................9

2.5.2 Prospective short-circuit current...................................................................9

2.5.3 Measurement of fault loop parameters in the L-N and L-L circuits ............10

2.5.4 Measurement of fault loop parameters in the L-PE circuit .........................13

2.5.5 Measurement of short circuit loop impedance in L-PE circuit protected with

a residual current device (RCD)..................................................................14

2.6 MEASUREMENT OF RCD PARAMETERS ...............................................................16

2.6.1 Measurement of RCD disconnection current...............................................16

2.6.2 Measurement of RCD disconnection time....................................................19

2.6.3 Automatic measurement of RCD parameters...............................................21

2.7 MEASUREMENT OF INSULATION RESISTANCE ......................................................25

2.7.1 Measurement of insulation resistance of individual objects........................25

2.7.2 Additional Information ................................................................................27

2.8 LOW-VOLTAGE MEASUREMENT OF RESISTANCE..................................................28

2.8.1 Measurement of continuity of protective conductors and equipotential

bondings with



200 mA current ..................................................................28

2.8.2 Low-current measurement of resistance......................................................30

2.8.3 Compensation of test leads resistance - autozeroing...................................31

2.9 CHECKING SEQUENCE OF PHASES........................................................................33

3MEMORY OF MEASUREMENT RESULTS.....................................................34

3.1 STORING THE MEASUREMENT RESULT DATA IN THE MEMORY .............................34

3.2 CHANGING THE CELL AND BANK NUMBER...........................................................36

3.3 VIEWING MEMORY DATA.....................................................................................37

3.4 DELETING MEMORY DATA...................................................................................39

3.4.1 Deleting bank data.......................................................................................39

3.4.2 Deleting the whole memory .........................................................................40

3.5 COMMUNICATION WITH A COMPUTER .................................................................41

3.5.1 Computer connection accessories ...............................................................41

3.5.2 Data transmission........................................................................................41

3.5.3 Software update...........................................................................................42

4TROUBLESHOOTING.........................................................................................43

5METER POWER SUPPLY...................................................................................45

OPERATING MANUAL MPI-505 version 1.03

5.1 MONITORING OF THE POWER SUPPLY VOLTAGE...................................................45

5.2 REPLACEMENT OF BATTERIES .............................................................................45

5.3 GENERAL PRINCIPLES REGARDING USING NI-MH ACCUMULATORS.....................48

6CLEANING AND MAINTENANCE....................................................................49

7STORAGE ..............................................................................................................49

8DISMANTLING AND UTILISATION................................................................49

9TECHNICAL SPECIFICATIONS .......................................................................50

9.1 BASIC DATA ........................................................................................................50

9.2 ADDITIONAL DATA..............................................................................................55

9.2.1 Additional uncertainties according to IEC 61557-2 (RISO)..........................55

9.2.2 Additional uncertainties according to IEC 61557-3 (Z)..............................55

9.2.3 Additional uncertainties according to IEC 61557-4 (R ±200mA) ...............56

9.2.4 Resistance of voltage electrode Rs[Ω]Additional uncertainties according to

IEC 61557-6 (RCD).....................................................................................56

10 EQUIPMENT .........................................................................................................56

10.1 STANDARD EQUIPMENT.......................................................................................56

10.2 OPTIONAL ACCESSORIES .....................................................................................56

11 MANUFACTURER ...............................................................................................57

OPERATING MANUAL MPI-505 version 1.03

1 Safety

MPI-505 meter is designed for performing check tests of protection against electric shock in

mains systems. The meter is used for making the measurements the results of which determine safe-

ty of electrical installations. Therefore, in order to provide conditions for correct operation and the cor-

rectness of the obtained results, the following recommendations must be observed:

Before you proceed to operate the meter, acquaint yourself thoroughly with the present manual

and observe the safety regulations and specifications determined by the producer.

Any application that differs from those specified in the present manual may result in a damage to

the device and constitute a source of danger for the user.

The device must be operated solely by appropriately qualified personnel with relevant certificates

to realise measurements of electric installation. Operation of the meter realised by unauthorised

personnel may result in damage to the device and constitute a source of danger for the user.

Using this manual does not exclude the need to comply with occupational health and safety regu-

lations and with other relevant fire regulations required during the performance of a particular type

of work. Before starting the work with the device in special environments, e.g. potentially fire-

risk/explosive environment, it is necessary to consult it with the person responsible for health and

safety.

It is unacceptable to operate the following:

A damaged meter which is completely or partially out of order,

A meter with damaged test leads insulation,

A meter stored for an excessive period of time in disadvantageous conditions (e.g. excessive

humidity). If the meter has been transferred from a cool to a warm environment of a high level

of relative humidity, do not realise measurements until the meter has been warmed up to the

ambient temperature (approximately 30 minutes).

It should be remembered that BAT message appearing on the display indicates that supply volt-

age of the meter is too low. This message signals also that the batteries must be replaced or the

accumulator charged. Measurements performed by means of the meter whose supply voltage is

too low are burdened with additional errors that are impossible to be estimated by the user. Such

measurements must not be relied on in order to state correctness of protection of a network test-

ed.

Battery spill and damage to the meter may occur if discharged batteries are left in the meter.

Before measurements may commence, make sure the test leads are connected to the appropri-

ate measurement sockets.

Do not operate a meter with an open or incorrectly closed battery (accumulator) compartment or

power it from other sources than those specified in the present manual.

The RISO inputs of the meter are protected electronically from overload (e.g. due to having been

connected to a live circuit) up to 440V rms for 60 seconds.

Repairs may be realised solely by an authorised service point.

ATTENTION!

Only standard and additional accessories for a given device should be used, as listed

in the "Equipment" section. Use of different accessories can lead to errors in the test

connection and can introduce additional measurement uncertainties.

Attention:

Due to continuous development of the meter’s software, the actual appearance of the

display, in case of some of the functions, may slightly differ from the display presented

in this operating manual.

OPERATING MANUAL MPI-505 version 1.03

Note:

An attempt to install drivers in 64-bit Windows 8 may result in displaying "In-

stallation failed" message.

Cause: Windows 8 by default blocks drivers without a digital signature.

Solution: Disable the driver signature enforcement in Windows.

2 Measurements

WARNING:

During measurements (short circuit loop, RCD), do not touch earthed and ac-

cessible parts of the tested electrical installation.

WARNING:

During a measurement, switching of the range switch is forbidden because it

may damage the meter and pose a threat to the user.

2.1 Selection of general measurement parameters

SET

Keeping SET button depressed,

turn on the meter and wait for the pa-

rameter selection screen.

SEL

SEL button is used to go to the next parameter

and to confirm the changes in the currently di-

splayed parameter.

Use and buttons to change the parameter

value. The value or symbol to be changed is flas-

hing.

The symbol indicates an active parameter,

the - symbol indicates an inactive one.

Set the parameters according to the following algorithm:

Indice

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