METREL MI 2166 Installation Manual

Demonstration board

Electrical installations

MI 2166

User Manual

Version 1.1, Code No. 20 750 750

Distributor:

Manufacturer:

METREL d.d.
Ljubljanska cesta 77
1354 Horjul
Slovenia

web site: http://www.metrel.si
e-mail: [e-mail]

Mark on your equipment certifies that this equipment meets the requirements of the EU
(European Union) concerning safety and interference causing equipment regulations

© 2005 METREL

No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.

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MI 2166 Demonstration board Table of contents

1. Introduction...............................................................................................................4

1.1. General Description..............................................................................................4

1.2. General warnings.................................................................................................4

1.3. Meaning of warning/information symbols on front panel.......................................4

1.4. List of measurements that can be demonstrated..................................................5

2. Before connecting demonstration board to mains supply....................................5

3. Front panel description............................................................................................6

4. Faults simulation.......................................................................................................6

5.1. Continuity of protective conductor........................................................................7

5.2. Insulation Resistance...........................................................................................8

5.3. Earth resistance....................................................................................................9

5.4. Earth resistance using two-clamp method..........................................................11

5.5. Specific earth resistance....................................................................................12

5.6. Line impedance..................................................................................................12

5.7. Loop resistance..................................................................................................13

5.8. Contact voltage and trip-out time / Current of RCD protection device................14

6. Technical data.........................................................................................................15

7. Maintenance............................................................................................................15

7.1. Cleaning.............................................................................................................15

7.2. Service...............................................................................................................15

8. Standard set............................................................................................................16

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MI 2166 Demonstration board Electrical installations

oard.The board

1. Introduction

1.1. General Description

Demonstration board simulates common electrical installation usually met in individual

house or apartment. This board is to be used preferably by sales personnel when
demonstrating operation of electrical installation test equipment. It is placed into a
practical plastic carrying case. Various test methods supported by different test
instruments can be presented. Acceptable or faulty parameters can be preset by five
»fault« switches. Some real elements of electrical installation are placed on the front
panel like RCD protection device, ON/OFF switch with lamp, mains test outlet and
connection terminals. Other elements are improvised.

Demonstration board is constructed according to European safety standard EN 61010-1.

1.2. General warnings

• If the equipment is not used in a manner specified by manufacturer, the

protection provided by equipment may be impared.

• Use Demonstration board on TN/TT supply systems only.

• Only qualified personnel who are familiar with the board and the

measurement instrument may use Demonstration board!

• Use of Demonstration board in a way not specified in this User Manual could

damage the board.

• Do not use Demonstration board in case of any damage noticed!

• Only an authorised person may carry out servicing of Demonstration board!

1.3. Meaning of warning/information symbols on front panel

Take care Demonstration board is connected only to
mains voltage according to the description under the
mains socket! In the opposite case the board can be
damaged!

Use outlets with grounded protection terminal only!
There is a protection circuit inside the b

will not turn on if connected to outlet without grounded
protection terminal.

The lamp will be ON if mains plug is inserted correctly.
Otherwise swap L and N terminals!

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MI 2166 Demonstration board Electrical installations

Protection circuit inside Demonstration board cuts mains
voltage at input stage of the board if phase line is not
applied to appropriate terminal or a voltage difference
between neutral line and protective conductor is higher
than 30 V.

Use the test outlet on front panel for measurement
purposes only!

Do not connect any load, otherwise board may be
damaged and the operator exposed to hazardous voltage!

Do not connect external voltage – possible hazardous
voltage on accessible parts of board.

PE collector (and all accessible conductive parts) are
NOT connected to mains PE but to neutral line.

1.4. List of measurements that can be demonstrated

- Continuity of protective conductor,

- Insulation resistance,

- Earth resistance using standard four-lead method,

- Earth resistance using two-clamp method,

- Specific earth resistance at three ground levels,

- Line impedance between the L and N terminals,

- Loop impedance in TT grounding system,

- Loop impedance in TN grounding system,

- Contact voltage without using auxiliary test probe,

- Contact voltage and earth resistance using auxiliary test probe,

- RCD trip-out current,

- RCD trip-out time,

- Other measurements.

2. Before connecting demonstration board to mains supply

Before connecting Demonstration board to mains voltage the operator has to verify:

• Wall mains outlet has to be equipped with PE terminal and there are no mechanical

damages noticed on the outlet!

• There are no damages on Demonstration board and on mains cord!

• Mains outlet has to be protected with RCD protection device I∆N = 30 mA

(recommended).

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MI 2166 Demonstration board Electrical installations

3. Front panel description

4. Faults simulation

The following faults on electrical installation can be simulated:

Switch Parameter

RE/LOOP
RCD

ZLINE

Earth resistance RE
RCD trip-out
Line impedance between L and
N terminals of mains socket
Resistance of protective

RPE

conductor between PE collector
and boiler’s PE terminal
Insulation resistance between L

RISO

terminal of mains socket and PE
collector

*Input impedance (at wall socket)

Approx. parameter
value without fault

RE = 95 Ω RE = 2000 Ω
t∆ < 300 ms No trip-out

ZLINE = Zx* + 0.2 Ω ZLINE = Zx* + 2.4 Ω

RPE = 0.0 Ω RPE = 4.7 Ω

RISO > 200 MΩ RISO = 0.44 MΩ

Approx.
parameter value
with fault

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MI 2166 Demonstration board Electrical installations

5. Measurements

5.1. Continuity of protective conductor

Warning:

Disconnect mains plug and switch off the RCD (protection device)!

Start conditions:

• All »fault« switches in OK position!

Measurement location Nominal value

PE collector – PE terminal of mains outlet
PE collector – PE terminal of boiler housing (TP1) (RPE switch in OK position)
PE collector – PE terminal of boiler housing (TP1) (RPE switch in fault position)
PE collector – internal gas installation (TP2)

0.1 Ω

0.1 Ω

4.7 Ω

0.4 Ω

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MI 2166 Demonstration board Electrical installations

5.2. Insulation Resistance

Warning:

Disconnect mains plug and switch off the RCD (protection device)!

Start conditions:

• Switch off the lamp!

• All »fault« switches in OK position!

Measurement location Nominal value

L terminal of mains outlet – N terminal of mains outlet
L terminal of mains outlet – PE collector (RISO switch in OK position)
L terminal of mains outlet – PE collector (RISO switch in fault position)
N terminal of mains outlet – PE collector
PE collector – external gas installation (TP3)

> 200 MΩ
> 200 MΩ

0.44 MΩ
> 200 MΩ

0.68 MΩ

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MI 2166 Demonstration board Electrical installations

5.3. Earth resistance

Warning:

Disconnect mains plug and switch off the RCD (protection device)!

Start conditions:

• All »fault« switches in OK position!

Measurement location Nominal value

H terminal – S0 / S+d / S-d+ – E/ES
(jumper TN/TT/AUX in TT position, jumper JUMP inserted)
H terminal – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, jumper JUMP inserted)
H terminal – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, jumper JUMP removed)

2.7 Ω

2.8 Ω

4.7 Ω

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MI 2166 Demonstration board Electrical installations

Measurement location Nominal value

PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/LOOP switch in OK position)
PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/LOOP switch in fault position)

95.2 Ω
2000 Ω

Notes!

3W – 3-wire measurement: E and ES leads are connected together.
In 3-wire measurement the instrument should show the same earth resistance value regardless

of connection point (S0, S+d, S-d).

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MI 2166 Demonstration board Electrical installations

5.4. Earth resistance using two-clamp method

Warning:

Disconnect mains plug and switch off the RCD (protection device)!

Start conditions:

• All »fault« switches in OK position!

RE1 + RE2

Measurement location Nominal value

Current loop (jumper TN/TT/AUX removed, Jumper JUMP inserted)

11.5 Ω

≈ RE2 (RE1 is practically shorted with low external earth resistance of power transformer)

Measurement location Nominal value

Current loop (jumper TN/TT/AUX in AUX position, jumper JUMP inserted)

7.1 Ω

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MI 2166 Demonstration board Electrical installations

5.5. Specific earth resistance

Warning:

Disconnect mains plug and switch off the RCD (protection device)!

Measurement location Nominal value

E – ES – S – H (“a” switch in 2 m position)
E – ES – S – H (“a” switch in 5 m position)
E – ES – S – H (“a” switch in 8 m position)

103 Ωm
471 Ωm
1960 Ωm

Note!

Take care the same distance »a« is selected on measurement instrument as on Demonstration
board.

5.6. Line impedance

Start conditions:

• Connect mains plug and switch on the RCD (protection device)!

• All »fault« switches in OK position!

Measurement location Nominal value

Line impedance at mains outlet (ZLINE switch in OK position)
Line impedance at mains outlet (ZLINE switch in fault position)

Zx + 0.2 Ω
Zx + 2.4 Ω

Zx = line impedance at the input, i.e. wall outlet.

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MI 2166 Demonstration board Electrical installations

n

position

5.7. Loop resistance

Start conditions:

• Connect mains plug and switch on the RCD (protection device)!

• All »fault« switches in OK position!

TT positio

TN

Note!

The measurement of loop resistance will cause the RCD on front panel to trip if test current is
higher or equal than declared nominal one, i.e. 30 mA.
Check test instrument User manual for selection of the best measurement method in order to
reach as good test results as possible!

Loop impedance (L - PE) in TT grounding system

Measurement location Nominal value

Mains outlet (RE/LOOP switch in OK position, ZLINE switch in OK position,
jumper TN/TT/AUX removed)
Mains outlet (RE/LOOP switch in fault position, ZLINE switch in OK position,
jumper TN/TT/AUX removed)
Mains outlet (RE/LOOP switch in OK position, ZLINE switch in OK position,
jumper TN/TT/AUX in TT position, jumper JUMP inserted)

Rx = Line impedance at the input i.e. wall outlet.

Rx + 95.2 Ω
Rx + 2000 Ω
Rx + 2.7 Ω

Loop impedance (L – PE) in TN grounding system

Measurement location Nominal value

RLOOP at mains outlet (RE/LOOP switch in fault position, ZLINE switch in OK
position, jumper TN/TT/AUX in TN position)

Rx = Line impedance at the input i.e. wall outlet.

Rx + 0.34 Ω

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MI 2166 Demonstration board Electrical installations

5.8. Contact voltage and trip-out time / Current of RCD

protection device

Start conditions:

• Connect mains plug and switch on the RCD (protection device)!

• All »fault« switches in OK position!

Contact voltage

I∆N = 30 mA

Measurement location Nominal value

Mains outlet (RE/LOOP switch in OK position, jumper TN/TT/AUX removed) 2.86 V
Mains outlet (RE/LOOP switch in fault position, jumper TN/TT/AUX removed) 60 V

Trip-out time

I∆N = 30 mA

Measurement location Nominal value

Mains outlet (RCD switch in OK position) < 300 ms
Mains outlet (RCD switch in fault position) No trip

Trip-out current

I∆N = 30 mA

Measurement location Nominal value

Mains outlet (RCD switch in OK position)
Mains outlet (RCD switch in fault position) No trip

15 mA ÷ 30 mA

Note!

Nominal values in the table are valid for RCD measurements type AC.

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MI 2166 Demonstration board Electrical installations

6. Technical data

Nominal mains voltage...............................230 V / 50 Hz

Power consuption.......................................7 W

Mains cord………………………………….. single-phase

Dimensions (width × length × height).........450 × 330 × 110 mm

Weight........................................................3.45 kg

Protection class..........................................I (protective earth conductor)

Over current category................................CAT II 300 V

Pollution degree.........................................2

RCD (protection device).............................30 mA/type A

Reference conditions

Reference temperature range....................10 °C ÷ 30 °C

Reference humidity range..........................40 %RH ÷ 70 %RH

Operation conditions
Working temperature range……………….. 0 °C ÷ 40 °C

Maximum relative humidity.........................95 %RH (0 °C ÷ 40 °C), non-condensing

7. Maintenance

7.1. Cleaning

Use a soft cloth slightly moistened with soapy water or alcohol to clean the surface of
the board and then leave the board to dry totally before use.

Do not use liquids based on petrol!
Do not spill liquids over the board!

7.2. Service

In case of unusual response of Demonstration board or if there is any damage noticed,
the product has to be taken to an authorised service. Consult the producer or your
dealer for further information.

The product has no internal user serviceable parts (fuses, etc).

Producer's address:
METREL d.d.

Ljubljanska 77
1354 Horjul
Slovenia

Tel.: [phone]
Fax.: [phone] or [phone]

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MI 2166 Demonstration board Electrical installations

8. Standard set

Upon receipt of Demonstration board it is advisable to check the content of the delivery.
The following items have to be included:

• Demonstration board.

• Two jumpers.

• Mains cable.

• Instruction manual.

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