EurotestEASI

MI 3100

Short instructions

Version 2.0 EU, Code No. 20 750 846

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

© 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 the EurotestEASI 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.

•

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 are 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 Instrument display

1

4

5

6

3

2

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 Continuity

3 Measurements

3.1 Continuity

1

Set function

2

Set sub-function

3

Set parameters and limits

Low

Ω

Continuity

High limit resistance
[

∗Ω sets limit off, 0.1 Ω ÷

20.0

Ω]

4

Connection diagram

Low

Ω

Continuity

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

T

x

N/L2

PE/L3

L/L1

R

y

S

z

T

x

5

Press the

TEST

key.

Press the

TEST

key to start. Press the

TEST

key

again to stop measurement.

6

View results

Displayed results:
R: Main Low

Ω resistance result

R+: Low

Ω resistance sub-result with positive voltage

at L terminal
R-: Low

Ω resistance sub-result with positive voltage

at N terminal

Displayed results:
R: Main continuity resistance result

5

Measurements Insulation resistance

3.2 Insulation resistance

1

Set function

2

Set parameters and limits

Nominal test voltage
[100 V

DC

÷ 1000 V

DC

]

Low limit resistance value
[

∗MΩ sets limit off, 0.01 MΩ ÷ 200 MΩ]

3

Connection diagram

L1
L2

L3
N
PE

switched off
mains voltage

closed
switches

di

s

c

onn

ec

-

te

d l

o

a

d

s

N/

L2

L

/L

1

PE/

L

3

4

Press and hold the

TEST

key until result is stabilised.

5

View results

Displayed results:
R: Insulation resistance
Um: Instrument test voltage

6

Measurements Line impedance and PSC

3.3 Line impedance (phase-neutral, phase-phase)

1

Set function

2

Set parameters and limits

Fuse type [

∗F sets limit off, NV, gG, B,

C, K, D]

Fuse current rating [0.5 A

÷ 1250 A]

Fuse tripping time [35 ms

÷ 5 s]

3

Connection diagram

L1
L2
L3
N

PE

R

E

Ro

L

PE

N

L/L

1

N/L2

PE/L3

N/

L

2

L

/L

1

PE

/L

3

4

Press the

TEST

key.

5

View results

Displayed results:
Z: Line impedance
I

SC

: Prospective short-circuit current

Lim: Low limit prospective short-circuit current value (if applicable)

7

Measurements Fault loop impedance and PFC

3.4 Fault loop impedance

1

Set function

2

Set sub-function

3

Set parameters and limits

Z LOOP

Zs(rcd)

Fuse type [

∗F sets limit off,

NV, gG, B, C, K, D]

Fuse current rating
[0.5 A

÷ 1250 A]

Fuse tripping time
[35 ms

÷ 5 s]

4

Connection diagram

Z LOOP

L1
L2
L3
N

PE

R

E

Ro

L

PE

N

L/L

1

N/L2

PE/L3

Zs (rcd)

L1
L2
L3
N

PE

R

E

Ro

L

PE

N

L/L

1

N/L2

PE/L3

5

Press the

TEST

key.

6

View results

Displayed results:

Z: Fault loop impedance
I

SC

: Prospective fault current

Lim: Low limit prospective fault current value (if applicable)

8

Measurements RCD testing

3.5 RCD testing

1

Set function

2

Set sub-function

3

Set parameters and limits

Contact voltage
measurement

Tripping time
measurement

Tripping current
measurement

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

L

PE

N

L/L

1

N/L2

PE/L3

5

Press the

TEST

key.

6

View results

Displayed results:
U

C

: Contact voltage

R

L

: Fault loop resistance

Displayed results:
t: Tripping time
U

C

: Contact voltage

Displayed results:
I

Δ

: Tripping current

U

CI

: Contact voltage

tI: Tripping time

Displayed results:
U

C

: Contact voltage

t1-t6: Tripping times

9

Measurements Voltage and frequency

3.6 Voltage and frequency

1

Set function

2

Connection diagram

L1
L2
L3
N

PE

R

E

Ro

L

PE

N

L/L

1

N/L2

PE/L3

N/L

2

L

/L

1

PE/

L

3

3

View results

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)

10

Measurements Phase sequence

3.7 Phase sequence

1

Set function

2

Connection diagram

L3
L2
L1
N
PE

N

/L

2

N

/L

2

L

/L

1

L

/L

1

P

E

/L

3

P

E

/L

3

result 1.2.3

option A 1110

result 2.1.3

3

View results

Displayed result:
Ph: Phase sequence
1.2.3: Correct connection
2.3.1: Invalid connection
-.-.-: Irregular voltages

11

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!

5

6

4

1

2

3

F1

F3

F2

Fuse

Fuse

Fuse

SIZ

E AA

SIZ

E AA

SIZ

E AA

SIZE AA

SIZE AA

SIZE 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

12