METREL MI 2166 Manuel utilisateur
Demonstration board
Electrical installations
MI 2166
User Manual
Version 1.1, Code No. 20 750 750
2
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
© 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.
MI 2166 Demonstration board Table of contents
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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
MI 2166 Demonstration board Electrical installations
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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 bymanufacturer, the
protection provided byequipment maybe impared.
• Use Demonstration board on TN/TT supplysystems only.
• Onlyqualified personnel who are familiar with the board and the
measurement instrument mayuse Demonstration board!
• Use of Demonstration board in a waynot specified in this User Manual could
damage the board.
• Do not use Demonstration board in case of anydamage noticed!
• Onlyan authorised person maycarryout 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
oard.The board
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!
MI 2166 Demonstration board Electrical installations
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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).
PE collector (and all accessible conductive parts) are
NOT connected to mains PE but to neutral line.
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.
MI 2166 Demonstration board Electrical installations
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3. Front panel description
4. Faults simulation
The following faults on electrical installation can be simulated:
Switch Parameter Approx. parameter
value without fault
Approx.
parameter value
with fault
RE/LOOP Earth resistance RERE= 95 ΩRE= 2000 Ω
RCD RCD trip-out t∆< 300 ms No trip-out
ZLINE Line impedance between L and
N terminals of mains socket ZLINE = Zx* + 0.2 ΩZLINE = Zx* + 2.4 Ω
RPE Resistance of protective
conductor between PE collector
and boiler’s PE terminal RPE = 0.0 ΩRPE = 4.7 Ω
RISO Insulation resistance between L
terminal of mains socket and PE
collector RISO > 200 MΩRISO = 0.44 MΩ
*Input impedance (at wall socket)
MI 2166 Demonstration board Electrical installations
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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 0.1 Ω
PE collector – PE terminal of boiler housing (TP1) (RPE switch in OK position) 0.1 Ω
PE collector – PE terminal of boiler housing (TP1) (RPE switch in fault position)
4.7 Ω
PE collector – internal gas installation (TP2) 0.4 Ω
MI 2166 Demonstration board Electrical installations
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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 > 200 MΩ
L terminal of mains outlet – PE collector (RISO switch in OK position) > 200 MΩ
L terminal of mains outlet – PE collector (RISO switch in fault position) 0.44 MΩ
N terminal of mains outlet – PE collector > 200 MΩ
PE collector – external gas installation (TP3) 0.68 MΩ
MI 2166 Demonstration board Electrical installations
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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) 2.7 Ω
H terminal – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, jumper JUMP inserted) 2.8 Ω
H terminal – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, jumper JUMP removed) 4.7 Ω
MI 2166 Demonstration board Electrical installations
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Measurement location Nominal value
PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/LOOP switch in OK position) 95.2 Ω
PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/LOOP switch in fault position) 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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