METREL MI 2166 Demonstration Board User Manual
- June 13, 2024
- METREL
Table of Contents
METREL MI 2166 Demonstration Board
Introduction
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.
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!
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 board. 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!
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.
Note!
If lamp is blinking and you hear noise from relays inside board, disconnect
mains plug and check supply socket.
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,
- Current using clamps,
- Other measurements.
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 = 30 mA (recommended).
Front panel description
Faults simulation
The following faults on electrical installation can be simulated:
Switch| Parameter| Approx. parameter value without fault|
Approx. parameter value with fault
---|---|---|---
Re/Zloop| Earth resistance RE| RE = 95 n| RE = 2000 n
RCD1| RCD trip-out| tD < 300 ms| No trip-out
Zline| Line impedance between L and N terminals of mains socket| ZLINE = Zx +
0.2 n| ZLINE = Zx + 2.4 n
Rpe| Resistance of protective conductor between PE collector and boiler’s PE
terminal| RPE = 0.0 n| RPE = 4.7 n
Riso| Insulation resistance between L terminal of mains socket and PE
collector| RISO > 200 MΩ| RISO = 0.44 MΩ
*Input impedance (at wall socket)
Measurements
Continuity of protective conductor
Warning:
Disconnect mains plug and switch off the RCD1 (protection device)! Start
conditions:
- All »fault« switches in OK position!
Measurement location | Nominal value |
---|---|
PE collector – PE terminal of mains outlet | 0.1 n |
PE collector – PE terminal of boiler housing (TP1) (RPE switch in OK
position)| 0.1 n
PE collector – PE terminal of boiler housing (TP1) (RPE switch in fault
position)| 4.7 n
PE collector – internal gas installation (TP2)| 0.4 n
Insulation Resistance
Warning:
Disconnect mains plug and switch off the RCD1 (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 Mn |
L terminal of mains outlet – PE collector (RISO switch in OK position) | > 200 |
Mn
L terminal of mains outlet – PE collector (RISO switch in fault position)|
0.44 Mn
N terminal of mains outlet – PE collector| > 200 Mn
PE collector – external gas installation (TP3)| 0.68 Mn
Earth resistance
Warning:
Disconnect mains plug and switch off the RCD1 (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
Measurement location | Nominal value |
---|
PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/ZLOOP switch in OK position)| 95.2 Ω
PE collector – S0 / S+d / S-d – E/ES
(jumper TN/TT/AUX removed, RE/ZLOOP 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).
Earth resistance using two-clamp method
Warning:
Disconnect mains plug and switch off the RCD1 (protection device)!
Start conditions:
- All »fault« switches in OK position!
RE1 + RE2
Measurement location | Nominal value |
---|---|
Earth Current loop (jumper TN/TT/AUX removed, Jumper JUMP inserted) | 11.5 0 |
≈ RE2 (RE1 is practically shorted with low external earth resistance of
power transformer)
Measurement location | Nominal value |
---|---|
Earth Current loop (jumper TN/TT/AUX in AUX position, jumper JUMP inserted) |
7.1 0
Specific earth resistance
Warning:
Disconnect mains plug and switch off the RCD1 (protection
device)!
Measurement location | Nominal value |
---|---|
E – ES – S – H (“a” switch in 2 m position) | 103 0m |
E – ES – S – H (“a” switch in 5 m position) | 471 0m |
E – ES – S – H (“a” switch in 8 m position) | 1960 0m |
Note!
Take care the same distance »a« is selected on measurement instrument as on
Demonstration board.
Line impedance
Start conditions:
- Connect mains plug and switch on the RCD1 (protection device)!
- All »fault« switches in OK position!
Measurement location | Nominal value |
---|---|
Line impedance at mains outlet (ZLINE switch in OK position) | Zx + 0.2 0 |
Line impedance at mains outlet (ZLINE switch in fault position) | Zx + 2.4 0 |
Zx = line impedance at the input, i.e. wall outlet.
Loop impedance
Start conditions:
- Connect mains plug and switch on the RCD1 (protection device)!
- All »fault« switches in OK position!
Note!
The measurement of loop resistance will cause the RCD1 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/ZLOOP switch in OK position, ZLINE switch in OK position,
jumper TN/TT/AUX removed)| Zx + 95.2 0
Mains outlet (RE/ZLOOP switch in fault position, ZLINE switch in OK position,
jumper TN/TT/AUX removed)| Zx + 2000 0
Mains outlet (RE/ZLOOP switch in OK position, ZLINE switch in OK position,
jumper TN/TT/AUX in TT position, jumper JUMP inserted)| Zx + 2.7 0
Zx = Line impedance at the input i.e. wall outlet.
Loop impedance (L – PE) in TN grounding system
Measurement location | Nominal value |
---|
RLOOP at mains outlet (RE/ZLOOP switch in fault position, ZLINE switch in OK position, jumper TN/TT/AUX in TN position)| Zx + 0.34 0
Zx = Line impedance at the input i.e. wall outlet.
Contact voltage and trip-out time / Current of RCD1 protection device
Start conditions:
- Connect mains plug and switch on the RCD1 (protection device)!
- All »fault« switches in OK position!
Contact voltage
IΔN = 30 mA
Measurement location | Nominal value |
---|---|
Mains outlet (RE/ZLOOP switch in OK position, jumper TN/TT/AUX removed) | 2.86 |
V
Mains outlet (RE/ZLOOP switch in fault position, jumper TN/TT/AUX removed)| 60
V
Trip-out time
IΔN = 30 mA
Measurement location | Nominal value |
---|---|
Mains outlet (RCD1 switch in OK position) | < 300 ms |
Mains outlet (RCD1 switch in fault position) | No trip |
Trip-out current
IΔN = 30 mA
Measurement location | Nominal value |
---|---|
Mains outlet (RCD1 switch in OK position) | 15 mA ¸ 30 mA |
Mains outlet (RCD1 switch in fault position) | No trip |
Note!
Nominal values in the table are valid for RCD1 measurements type AC.
Current measurement using clamps
Start conditions:
- Connect mains plug and switch on the RCD1 (protection device)!
Measurement location | Nominal value |
---|---|
Current Loop (RCD1 switch in OK position) | ~ 3 A |
Technical data
Nominal mains voltage…………………………….. 230 V / 50 Hz
Power consuption……………………………………. 10 W
Mains cord……………………………………………… single-phase
Dimensions (width × length × height)………. 450 × 330 × 110 mm
Weight…………………………………………………….. 3.56 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
Maintenance
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!
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.: +386 (0)1 7558 200
Fax.: +386 (0)1 7549 095 or +386 (0)1 7549 226
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.
Customer Support
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Hereby, Metrel d.d. declares that the MI 2166 is in compliance with subjected
EU directive. The full text of the EU declaration of conformity is available
at the following internet address http://www.metrel.si/DoC.
Manufacturer:
Metrel d.d.
Ljubljanska cesta 77
SI-1354 Horjul
Slovenia
https://www.metrel.si
info@metrel.si