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
© 2004-2006 METREL
No part of this publication may be reproduced or utilized in any form or by any means
without permission in writing from METREL.
2

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!
3

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.
1
4
56
32
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.
4

Measurements Illumination
3 Measurements
3.1 Illumination
1
Set function
2
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]
3
Positioning diagram
4
Switch on the LUXmeter probe. Press the
TEST
key.
5
View results and press the MEM key to save them.
Displayed results:
E: Illumination
5

Measurements TRMS current
3.2 TRMS current
1
Set function
2
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]
3
Connection diagram
L1
L2
L3
N
PE
Option A 1018
cc
I L
I
4
Press the
TEST
key.
5
View results and press the MEM key to save them.
Displayed results:
I: TRMS current (or TRMS leakage current)
6

Measurements Resistance to earth
3.3 Resistance to earth
1
Set function
2
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]
3
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
E
HS
4
Press the
TEST
key.
5
View results and press the MEM key to save them.
Displayed results:
R: Resistance to earth
RC:Auxiliary earth electrode resistance
RP:Probe resistance
7

Measurements Continuity
3.4 Continuity
1
Set function
2
Set sub-function
3
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]
4
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
Ry Sz
Tx
N/L2
PE/L3L/L1
Ry Sz
Tx
5
Press the
TEST
key. Press the
TEST
key to start. Press the
TEST
key
again to stop measurement.
6
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
8

Measurements Insulation resistance
3.5 Insulation resistance
1
Set function
2
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]
3
Connection diagram
L1
L2
L3
N
PE
switched off
mains voltage closed
switches
disconnec- ted loads
N/L2
L/L1
PE/L3
4
Press and hold the
TEST
key until result is stabilised.
5
View results and press the MEM key to save them.
Displayed results:
R: Insulation resistance
Um: Instrument test voltage
9

Measurements Insulation monitoring in IT systems
3.6 Insulation monitoring in IT systems
1
Set function
2
Set sub-function
3
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]
4
Connection diagram
L1
L2
IMD
IT supply
N/L2 L/L1
PE/L3
5
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.
6
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)
10

Measurements Line impedance and PSC
3.7 Line impedance (phase-neutral, phase-phase)
1
Set function
2
Set parameters and limits
Earth RCD
Sensor
Continuity
Insulation Loop
Line
Volt.
 Fuse type [∗F sets limit off, BS88, BS3036,
BS1361, BS1362, B, C, D]
 Fuse current rating [ 6 A ÷200 A]
 Fuse tripping time [ 0.4 s, 5 s]
3
Connection diagram
L1
L2
L3
N
PE
R E
Ro
LPEN
L/L1
N/L2PE/L3
N/L2
L/L1
PE/L3
4
Press the
TEST
key.
5
View results and press the MEM key to save them.
Displayed results:
Z: Line impedance
ISC: Prospective short-circuit current
Lim: High limit line impedance value (if applicable)
11

Measurements Fault loop impedance and PFC
3.8 Fault loop impedance
1
Set function
2
Set sub-function
3
Set parameters and limits
Earth RCD
Sensor
Continuity
Insulation Loop
Line
Volt.
 Zs
 Zs (rcd)  Fuse type [∗F sets limit off,
BS88, BS3036, BS1361,
BS1362, B, C, D]
 Fuse current rating
[ 6 A ÷200 A]
 Fuse tripping time
[0.4 s, 5 s]
4
Connection diagram
Zs
L1
L2
L3
N
PE
R E
Ro
LPEN
L/L1
N/L2PE/L3
Zs (rcd)
L1
L2
L3
N
PE
R E
Ro
LPEN
L/L1
N/L2PE/L3
5
Press the
TEST
key.
6
View results and press the MEM key to save them.
Displayed results:
Z: Fault loop impedance
ISC: Prospective fault current
Lim: High limit fault loop impedance value (if applicable)
12

Measurements RCD testing
3.9 RCD testing
1
Set function
2
Set sub-function
3
Set parameters and limits
Earth RCD
Sensor
Continuity
Insulation Loop
Line
Volt.
 Contact voltage
 Tripping time
 Tripping current
 RCD autotest
 Limit contact voltage
[25V, 50V]
 Nominal differential RCD
tripping current
[10 mA ÷1000 mA]
 Multiplier of nominal
differential RCD tripping
current [×½, ×1, ×2, ×5]
 Test current starting polarity
and RCD type [ G, G,
S, S, G, G,
S, S]
4
Connection diagram
L1
L2
L3
N
PE
R E
Ro
LPEN
L/L1
N/L2PE/L3
5
Press the
TEST
key.
6
View results and press the MEM key to save them.
Displayed results:
UC: Contact voltage
RL: Fault loop resistance
Lim: High limit fault loop
resistance
Displayed results:
t: Tripping time
UC: Contact voltage
Displayed results:
IΔ: Tripping current
UCI: Contact voltage
tI: Tripping time
Displayed results:
UC: Contact voltage
t1-t6: Tripping times
13

Measurements Voltage and frequency
3.10 Voltage and frequency
1
Set function
Earth RCD
Sensor
Continuity
Insulation Loop
Line
Volt.
2
Connection diagram
L1
L2
L3
N
PE
R E
Ro
LPEN
L/L1
N/L2PE/L3
N/L2
L/L1
PE/L3
3
View results and press the MEM key to save them.
Displayed results:
Ul(1)-n(2): Voltage between phase and neutral conductors (or between phases L1 and L2)
Ul(1)-pe(3): Voltage between phase and protective conductors (or between phases L1 and L3)
Un(2)-pe(3): Voltage between neutral and protective conductors (or between phases L2 and L3)
14

Measurements Phase sequence
3.11 Phase sequence
1
Set function
Earth RCD
Sensor
Continuity
Insulation Loop
Line
Volt.
2
Connection diagram
L3
L2
L1
N
PE
N/L2
N/L2
L/L1
L/L1
PE/L3
PE/L3
result 1.2.3 option A 1110
result 2.1.3
3
View results and press the MEM key to save them.
Displayed result:
Ph: Phase sequence
1.2.3: Correct connection
2.3.1: Invalid connection
-.-.-: Irregular voltages
15

Maintenance
4 Maintenance
4.1 Replacing fuses
• F1
M 0.315 A / 250 V, 20×5 mm
This fuse protects internal circuitry of low-value resistance function if test probes
are connected to the mains supply voltage by mistake.
• F2, F3
F 4 A / 500 V, 32×6.3 mm
General input protection fuses of test terminals L/L1 and N/L2.
Warnings:
• Disconnect any measuring accessory and power off the instrument before
opening battery/fuse compartment cover, hazardous voltage inside!
• Replace blown fuse with original type only, otherwise the instrument may be
damaged and/or operator’s safety impaired!
56
4
1
2
3
F1
F3
F2 Fuse
Fuse
Fuse
SIZE AASIZE AA
SIZE AA
SIZE AASIZE AASIZE AA
S/N XXXXXXXX
Battery and fuse compartment
Legend:
1 Fuse F1
2 Fuse F2
3 Fuse F3
4 Serial number label
5 Battery cells (size AA)
6 Battery holder
16