METREL EasiTEST MI 2087 AL2 User manual

EasiTEST
MI 2087 AL2
Instruction Manual
Version 1, Code No. 20 750 810

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
© 2003 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 2087 AL2 EasiTEST Table of conteents
3
1Introduction.........................................................................................................4
1.1 General description........................................................................................4
1.2 Warnings........................................................................................................4
1.3 List of parameters measurable by the EasiTest.............................................5
1.4 Standards applied..........................................................................................6
2Instrument description.......................................................................................7
2.1 Front panel.....................................................................................................7
2.2 Connector panel............................................................................................9
2.3 Bottom side..................................................................................................10
2.4 Standard accessories..................................................................................11
2.5 Optional accessories...................................................................................11
2.6 Ways of carrying the instrument..................................................................11
2.7 Accessories required for specific measurement..........................................12
3Measurement instructions...............................................................................13
3.1 Insulation resistance....................................................................................13
3.2 Continuity of protective conductors..............................................................15
3.3 RCD - Contact voltage and fault loop resistance.........................................18
3.4 RCD - Trip-out time......................................................................................20
3.5 RCD – Trip-out current................................................................................23
3.6 RCD - Automatic test...................................................................................24
3.7 Fault loop resistance and prospective short-circuit current..........................29
3.8 Line resistance RL-N/RL-L and prospective short-circuit current.................30
4Other operations...............................................................................................33
4.1 Reset of the instrument................................................................................33
5Maintenance......................................................................................................34
5.1 Batteries.......................................................................................................34
5.2 Fuses...........................................................................................................35
5.3 Cleaning.......................................................................................................35
5.4 Periodic calibration......................................................................................36
5.5 Service.........................................................................................................36
6Technical specification....................................................................................37
6.1 Functions.....................................................................................................37
6.2 General characteristics................................................................................38

MI 2087 AL2 EasiTEST Introduction
4
1Introduction
Congratulations on your purchase of the EasiTest test instrument and it's accessories,
produced by METREL d.d. We are glad to offer high professional test equipment for
carrying out absolute inspection of electrical installations in buildings. The equipment
was designed and produced on basis of rich experiences, acquired through many
years of dealing with electrical installation test equipment.
1.1 General description
The EasiTest is professional, multifunctional, portable test instrument, intended for
carrying out measurements according to European standard EN 61557, as well as
various other tests and measurements.
The instrument is equipped with all accessories, necessary for comfortable testing. It
is kept in a soft carrying bag together with all the enclosed accessories.
Electronic part of the EasiTest is produced in SMD technology, which demands
practically no service interventions. Wide, custom designed display with backlight
offers easy to read main results as well as wide range of subresults, parameters and
messages. Operation is simple and clear; operator does not need any special training
(except to read this instruction manual) to operate the instrument.
In order for the operator to be familiar enough with measurements in general, it is
advisable to read the enclosed handbook Measurements on electric installations in
theoryand practice.
1.2 Warnings
In order to reach high operator’s safety, while carrying out various measurements and
tests using the EasiTest, as well as to keep the test equipment undamaged, it is
necessary to consider the following general warnings:
q If the test equipment is used in manner not specified in this instruction manual,
the protection provided by the equipment may be impaired!
q Do not use the instrument and accessories, if any damage is noticed!
q In case any fuse is blown, follow the instructions in this instruction manual to
replace it!
q Service intervention or calibration procedure is allowed to be carried out only
by a competent, authorised person!
q Consider all generally known precautions in order to avoid risk of electric shock
while dealing with hazardous voltages!
q Use only standard or optional test cables supplied by your dealer!

MI 2087 AL2 EasiTEST Introduction
5
1.3 List of parameters measurable by the EasiTest
Parameter Switch
position Description
Insulation resistance INSULATION Test voltage: 250 V, 500 V, 1000 V
Continuityresistance of
protective conductors
CONTINUITY -Test current: >200mADC
-Single measurement
-Auto polarity reverse
Fault loop resistance RL-PE LOOP L-E,
PSC -Max. test current 2,5 A
Fault loop prospective
short-circuit current Ipsc LOOP L-E,
PSC -Calculation:
Ipsc = UN⋅1,06/RL-
PE
Voltage UL-PE LOOP L-E,
PSC -0 ÷264 V
Line resistance RL-N LOOP L-N,
PSC -Max. test current 2,5 A
Line prospective
short-circuit current Ipsc LOOP L-N,
PSC -Calculation:
Ipsc = UN⋅1,06/RL-
N
Voltage UL-N LOOP L-N,
PSC -0 ÷264 V
RCD - Contact voltage Uc TRIP-LOCK -Without test rod
-No trip-out RCD
RCD -
Fault loop resistance
RL (external source) TRIP-LOCK -Without test rod -No trip-out RCD
RCD - Trip-out time t∆NRCD
MANUAL -At 0,5I∆N, I∆N, 2I∆N (multiplier 5 is not available, if
I∆N = 1000 mA)
RCD – Trip-out current I∆RCD
RAMPTEST -Rising current
(0,2 ÷1,1)I∆N
RCD - Trip-out time t∆at
trip-out Current I∆RCD
RAMPTEST
RCD - Automatic test
RCD AUTO -Contact voltage measurement
-Trip-out time measurement
at 0,5I∆N, I∆N and 5I∆
N
(both test curr. start phases)

MI 2087 AL2 EasiTEST Introduction
6
1.4 Standards applied
Instrument operation:
IEC / EN 61557-1 IEC / EN 61557-2
IEC / EN 61557-3
IEC / EN 61557-4
IEC / EN 61557-6
DIN VDE 100
BS 7671 – 16th edition
Electromagnetic compatibility (EMC):
EN 61326
Safety:
IEC / EN 61010-1 (instrument) IEC / EN 61010-2-31 (accessories)

MI 2087 AL2 EasiTEST Instrument description
7
2Instrument description
2.1 Front panel
1
2
1
1
1
0
9
8
7
6
5
4
3
Fig. 1: Front panel

MI 2087 AL2 EasiTEST Instrument description
8
Legend:
1........ON/OFF key, to switch ON or OFF the instrument. Auto OFF will occur
automatically 10 minutes after any key is pressed or function switch rotated.
2........LAMP key, to turn ON or OFF display backlight. Auto OFF will automatically
occur 20 seconds after to any key is pressed or function switch rotated.
3........START key, to start any measurement.
4........DISPLAY key, to:
q Check last actual test voltage (INSULATION position) after finishing the
measurement.
q Check lower partial result in Continuity of protective conductors function, when
main test result is displayed (CONTINUITY position).
q Switch between voltage and frequency measurement (LOOP L-N, PSC or
LOOP L-E, PSC position) before START key is pressed.
q Check Prospective Short-circuit Current Ipsc (LOOP L-N, PSC or LOOP L-E,
PSC position) when main test result is displayed.
q Check Fault Loop Resistance value and set Limit Contact Voltage (TRIP-LOCK
position)when result Uc is displayed.
q Check Contact Voltage and set Limit Contact voltage (RCD MANUAL position),
when result t∆N is displayed.
q Check Contact Voltage, Trip-out Time at trip-out current and set Limit Contact
Voltage (RCD RAMPTEST position) when result I∆is displayed.
5........LCD with backlight.
6........Function switch, to select appropriate parameter to be tested.
7........Belt slot, to fix carrying belt.
8........CAL key, to compensate resistance of test leads in CONTINUITY function.
9........ key, to reduce settable parameter value.
10......▲key, to increase settable parameter value.
11......SELECT key, to select/set function parameters as follows:
q INSULATION (nominal test voltage)
q RCD AUTO (nominal differential current, RCD type)
q RCD RAMPTEST (nominal differential current)
q RCD MANUAL (nominal differential current, multiplier of nominal differential
current, RCD type)
q TRIP-LOCK (Loop/Rs or contact voltage, nominal differential current, RCD
type, limit contact voltage)

MI 2087 AL2 EasiTEST Instrument description
9
2.2 Connector panel
1
Use original testcables only!
Max. allowedvoltagebetweentest terminals
and ground is300V!
Max. allowedvoltagebetweentest terminals
is500V!
Fig. 2: Connector panel
Legend:
1........Main test connector

MI 2087 AL2 EasiTEST Instrument description
10
2.3 Bottom side
Fig. 3: Bottom side
Legend:
1........Nylon strip (it serves for carrying the instrument around the neck).
2........Auxiliary nylon strip (it serves for fixing the instrument around operator' body).
3........Plastic cover (it fixes nylon strip to the instrument). There is a screw under the
cover which has to be unscrewed when opening the instrument for service or
calibration purpose.
4........Screw (unscrew it to remove carrying strip or to open the instrument).
5........Label with measurement ranges.
6........Battery/fuse compartment cover.
7........Screw (unscrew it to replace batteries or blown fuse).
8........Rubber foot.

MI 2087 AL2 EasiTEST Instrument description
11
2.4 Standard accessories
See attached sheet to compare received set of accessories with listed one.
2.5 Optional accessories
See attached sheet to check the list of possible optional accessories which may be
supplied upon request.
2.6 Ways of carrying the instrument
As two carrying belts (neck and back) are supplied in standard set, various possibilites
of carring the instrument are available. Operator can choose appropriate one for the
intended operation, see the following examples:
The instruments is hung
around operator´s neck only –
quick placing and displacing.
The instruments is hung
around operator´s neck and
fixed to this body with back
belt – stable position.
The instrument can be used even placed in
soft carrying bag – test cable connected to
the instrument throught the side aperture.
The instrument
is fixed to
operator´s body
with back belt
only –
it can be
simply moved
from side to
front position for
measurement
purpose and
back again.

MI 2087 AL2 EasiTEST Instrument description
12
2.7 Accessories required for specific measurement
The table below presents accessories (standard or optional) required for specific
measurement. The accessories marked as optional may also be standard ones in
some set configurations. Please see attached list of standard accessories for your set
configuration or contact your dealer for further information.
FUNCTION REQUIRED ACCESSORIES
Insulation resistance Universal Test Cable or
Tip Commander (Option – Order No. A 1002)
Continuityof protective
conductor Universal Test Cable or
Tip Commander (Option – Order No. A 1002)
Probe Test Lead 4m (Option – Order No. A 1012)
Fault loop resistance, Ipsc Universal Test Cable
Line resistance, Ipsc Universal Test Cable
RCD – Contact voltage at I∆N
RCD – Trip-out time
RCD – Trip-out current
RCD – Fault loop resistance
RCD – Automatic test
Universal Test Cable

MI 2087 AL2 EasiTEST Measurement instructions
13
3Measurement instructions
3.1 Insulation resistance
There are different objects, where insulation resistance has to be measured in order
to assure safety against electric shock. Let’s list a few examples:
q insulation resistance between installation conductors (all combinations)
q insulation resistance of non-conductive rooms (walls and floors)
q insulation resistance of ground cables
q resistance of semiconductive (antistatic) floors
For additional general information concerning insulation resistance measurement refer
to enclosed handbook Measurements on electric installations in teoryand
practice.
Warnings:
q Make sure that tested object is deenergised (mains voltage disconnected),
before starting the measurement!
q When measuring insulation resistance between conductors, all loads must be
disconnected and all switches closed!
q Do not touch tested object while testing it, risk of electric shock!
q Do not connect test terminals to external voltage higher than 600V (AC or DC),
to prevent damage to the test instrument!
q In case of capacitive test object (capacitive compensation of reactive power,
long tested cable, etc.), automatic discharge of the object may not be done
immediately after finishing the measurement. Decreasing voltage will be
displayed in that case – do not disconnect test leads until the voltage drops
below 50V or carefully discharge the tested object manually!
How to carry out the measurement
Step 1
q Connect test cable (Universal test cable or Tip Commander) to EasiTest.
q Set function switch to INSULATION position, the following menu will be
displayed:
Fig. 4: Insulation resistance initial menu

MI 2087 AL2 EasiTEST Measurement instructions
14
Step 2
Select nominal test voltage as follows:
Press the SELECT key, last set nominal test voltage starts to blink.
Fig. 5: Test voltage adjustment menu
q Use the and ▼keys to set required nominal test voltage. The following
values can be selected: 250V, 500V or 1000V.
q Press the SELECT key again after setting nominal test voltage to return to
Insulation resistance initial menu.
Step 3
q Connect test cable to the tested object, according to the figure below:
Fig. 6: Connection of Universal Test Cable and optional Tip Commander
(Order No. A 1002)
Step 4
q Press the START key and keep it pressed, until result is stabilised, then
release the key. Last result will stay displayed.
q Check last actual test voltage by pressing the DISPLAY key.
L1
L2
L3
N
PE
switched off
mainsvoltage closed
switches
disconnec- ted loads
Option A 1002
N
/
L
2
L
/
L
1
P
E
/
L
3

MI 2087 AL2 EasiTEST Measurement instructions
15
Notes:
q In case that present external voltage higher than 29V (AC or DC) ia present
between test terminals the insulation resistance measurement will not be
carried out after pressing START key, but the voltage will be displayed,
equipped with “!”mark! Warning sound is also emitted.
q Tested object is discharged automatically after finishing the measurement,
actual voltage is displayed during discharging until the voltage drops below
30V!
q If test result is out of measurement range (open test leads or good isolation)
“>1000 MΩ” message will be displayed!
q Positive pole of test voltage is attached to blue test lead (Universal test cable)
or to commander test tip (Tip Commander)!
q “bat” message displayed during or after finishing the measurement means
batteries are too weak to guarantee correct result. Replace the batteries.
3.2 Continuity of protective conductors
Continuity of protective conductors has to be measured before mains voltage is
connected to tested installation (new or adapted installations). Max. allowed
resistance value depends on power of connected loads, used installation system (TN,
TT) etc.
For additional general information concerning Continuity measurement, refer to
enclosed handbook Measurements on electric installations in theorypractice.
Warning:
q Make sure that tested object is deenergised (mains voltage disconnected)
before starting the measurement!
How to carry out the measurement
Step 1
q Connect test cable (Universal test cable or Tip Commander) to EasiTest.
q Set function switch to CONTINUITY position, the following menu will be
displayed:
Fig. 7: Continuity of protective conductors initial menu
Cü........Resistance of test leads has
been compensated.

MI 2087 AL2 EasiTEST Measurement instructions
16
Step 2
Compensate test leads (if they have not been compensated yet or, if already
compensated test leads have been exchanged) as follows:
q Short test leads; see the figure below.
Fig. 8: Shorted test leads
q Press the START key and release it in order to carry out regular measurement,
result (close to 0 Ω) will be displayed.
q Press the CAL key and release it, displayed result will alter to 0,00Ωand Cü
mark will appear, indicating the compensation was successfully accomplished.
Test instrument is thus ready to be used.
q In order to remove potential compensation, follow the procedure described in
this step with open test leads. “Cü”mark will disappear after finishing the
procedure, indicating the compensation has been removed.
Step 3
q Connect test leads to the tested object according to the figures below.
Fig. 9: Connection of Universal Test Cable and optional Probe Test Lead
(Order No. A 1012)
N/L2
L
/
L
1
L
/
L
1
PE/L3 N/L2
O
p
t
i
o
n
A
1
0
0
2
PE/L3
PCC1
OptionA 1012
PCC2
PCC3
N/L2
PE/L3
L/L1
MPEC
MPEC..........MainPotential
EquilizingCollector
PCC.............ProtectionConductor
Collector

MI 2087 AL2 EasiTEST Measurement instructions
17
Fig. 10: Connection of optional Tip Commander (Order No. A 1002) and optional
Probe Test Lead (Order No. A 1012)
Step 5
q Press the START key and release it. Measurement will be carried out and
result displayed afterwards. Each measurement is accomplished in two steps
(polarity is reversed between the two steps automatically). Higher partial result
is displayed.
q Check the lower partial result by pressing the DISPLAY key.
Notes:
q In case of present external voltage higher than 9V (AC or DC) between test
terminals, the continuity measurement will not be carried out after pressing
START key instead the voltage will be displayed, equipped with “!” mark!
Warning sound is also emitted.
q If resistance value higher than 5Ω(measured with not-compensated
instrument) is displayed, compensation will not be carried out after pressing
CAL key, but already effected compensation will be annulled (“Cü” mark will
disappear)!
q If test result is out of measurement range (open test leads) “>1999 Ω” message
will be displayed!
q “bat” message, displayed during or after finishing the measurement means
batteries are too weak to guarantee correct result. Replace the batteries.
PCC1
PCC2
PCC3
MPEC
OptionA 1012
OptionA 1002

MI 2087 AL2 EasiTEST Measurement instructions
18
3.3 RCD - Contact voltage and fault loop resistance
For general information concerning Contact voltage / Fault loop resistance
measurement refer to enclosed handbook Measurements on electric installations
in theoryand practice.
How to carry out the measurement
Step 1
q Connect test cable (Universal test cable) to EasiTest.
q Set function switch to TRIP-LOCK position, Contact voltage initial menu or
Fault loop resistance initial menu will be displayed; see the figure below. Uc
or looP is displayed for a while before initial menu appears.
Fig. 11: Contact voltage initial menu (left) and Fault loop resistance initial menu
Step 2
q Select required function i.e. Contact voltage or Fault loop resistance by
pressing the SELECT key first. Previously set function (Uc or looP message)
starts to flash. Select the function by using the and ▼keys.
Fault loop resistance function takes longer measurement time but offers better
resistance accuracy (in comparison with the RLsubresult in Uc function).
Step 3
Select nominal differential current I∆N as follows:
q Press the SELECT key, last set nominal differential current starts to blink.
q Select appropriate value by using the and ▼keys. The following values are
available: 10mA, 30mA, 100mA, 300mA, 500mA or 1000mA.
G(General)
type of RCD
is selected.
S(Selective)
type of RCD
is selected.

MI 2087 AL2 EasiTEST Measurement instructions
19
Step 4
Select type of involved RCD as follows:
q Press the SELECT key after setting nominal differential current, last set type
starts to blink.
q Select appropriate type using the and ▼keys. Standard (General) type (Gis
displayed) or selective type (Sis displayed) can be selected.
Step 5
Select limit contact voltage value Ulim as follows:
q Press the SELECT key after setting RCD type, last set limit contact voltage
starts to blink.
q Select appropriate value using the and ▼keys. 50 V or 25 V can be
selected.
q Press the SELECT key again after selecting the limit contact voltage, to return
to Contact voltage or Fault loop resistance initial menu.
Step 6
q Connect test cable to tested object (mains outlet or other test terminals)
according to the figure below. “Mains plug” mark will be displayed as soon as
mains voltage appears at test terminals.
Fig. 12: Connection of Universal Test Cable
Step 7 (Uc function is selected)
q Press the START key and release it. Measurement will be carried out and
result (Uc at I∆N- standard RCD or Uc at 2I∆N- selective RCD) will be
displayed.
q Check fault loop resistance subresult and preset limit contact voltage by using
the DISPLAY key.

MI 2087 AL2 EasiTEST Measurement instructions
20
Step 8 (looP function is selected)
q Press the START key and release it, the measurement will start to run. Three
dots (. . .) will flash until the measurement is finished, then the result is
displayed. The measurement may last longer (up to 1 min approx.) in order to
assure accurate and stabile test result.
q Check contact voltage subresult (Uc at I∆N– standard RCD or Uc at 2I∆N–
selective RCD) and preset limit contact voltage by using the DISPLAY key.
Notes:
q If RCD trips during the measurement (some fault or leakage current is probably
already flowing to ground) “rcd”mark will start to blink.
q RCD type, limit contact voltage, and nominal differential current set in this
function will be offered in other RCD functions (wherever actual)!
q Current flowing to PE protective conductor, caused by faulty appliances or
capacitive connection between L and PE terminals will influence the test result.
Disconnect such appliances before the measurement is started!
q Specified accuracy of Uc/RLmeasurement is valid only if earthing system
connected to PE terminal is free of interfering voltages!
q “bat” message displayed during or after finishing the measurement means
batteries are too weak to guarantee correct result. Replace the batteries.
3.4 RCD - Trip-out time
In order to assure safe conditions, RCD device must trip-out within a certain time,
in case of present fault on connected electric appliance. See allowed trip-out time
ranges in the following table.
Type of RCD
protection
switch
I∆n2I∆n5I∆n* Remark
Standard 300 ms 150 ms 40 ms max. allowed trip-
out time
500 ms 200 ms 150 ms max. allowed trip-
out time
Selective 130 ms 60 ms 50 ms min. allowed trip-
out time
* If I∆N≤30 mA, test current of 0,25 A is used instead of 5I∆N.
Table 1: Allowed trip-out times according to EN 61009 standard
For additional general information concerning the measurement, refer to enclosed
handbook Measurements on electric installations in practice and theory.