Benning MA 3 User manual

BENNING MA 3
CEE-Messadapter 5-/ 3-polig
Operating manual
Translated version (English)
5076 en
Version
1.00
19 February 2018

Table of contents
1. Application.............................................................................................1
2. Safety notes and precautions ..............................................................1
2.1. Basic information on safety.................................................................................. 1
2.2. Symbols used ...................................................................................................... 1
3. Inspection characteristics of the BENNING MA 3 .............................. 1
4. Operating elements...............................................................................2
5. Connecting the BENNING MA 3 ........................................................... 3
6. Testing with the BENNING MA 3.......................................................... 3
6.1. Testing of three-phase devices ........................................................................... 3
6.1.1. RPE – Protective conductor resistance............................................................... 3
6.1.2. RInsu – Insulating resistance .............................................................................. 4
6.1.3. Alternative leakage current measurements......................................................... 6
6.2. Testing of extension cables................................................................................. 9
6.2.1. RPE – Protective conductor resistance............................................................... 9
6.2.2. RInsu – Insulating resistance ............................................................................ 10
6.2.3. Functional test and phase sequence test of cables .......................................... 10
7. Function table......................................................................................11
8. Technical data...................................................................................... 11
9. Maintenance.........................................................................................11
10. Warranty terms....................................................................................11
11. Service contacts..................................................................................12

BENNING MA 3 measuring adapter
1
1. Application
The BENNING MA 3 measuring adapter helps you to test
portable devices. Due to its robust design, it is particularly
suited for being used in industrial environments.
The BENNING MA 3 measuring adapter is easy to use
and thus allows the user to work efficiently and quickly.
You can test devices and extension cables being provided
with the following connectors complyingwith IEC 60309-1.
CEE connector:
•16 A, 50 Hz to 60 Hz, 230 V, L+N+PE, 6h
•16 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE, 6h
•32 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE, 6h
To do this, connect the BENNING MA 3 measuring
adapter to an appliance tester for testing portable devices
according to:
DIN VDE 0701-0702, DIN EN 62353 (VDE 0751-1) or
DIN EN 60974-4 (VDE 0544-4).
For connection of the measuring adapter, the appliance
tester must be equipped with a shock-proof socket.
The BENNING MA 3 measuring adapter is suited to be
connected to the following appliance testers:
•BENNING ST 725
•BENNING ST 750/ ST 750 A
•BENNING ST 755 and BENNING ST 760
The measuring adapter can be used for the following tests:
•Protective conductor resistance (RPE)
•Insulating resistance (RInsu)
•Functional test and phase sequence test of cables
•Alternative leakage current:
e. g. IPE (protective conductor current), ICont (con-
tact current), ILeak (device leakage current), IPLeak
(patient leakage current)
The manufacturers’ specifications or normative re-
strictions with regard to alternative leakage current
testing must be adhered to.
To do this, thoroughly read the notes stated in the
corresponding standard, in the manufacturers’
specifications of the test sample and in the operat-
ing manual of the appliance tester.
2. Safety notes and precautions
2.1. Basic information on safety
The BENNING MA 3 measuring adapter has been designed and
tested in compliance with the safety requirements according to
IEC/ EN 61010-1/ VDE 0411-1.
All electrically conductive parts of the housing are connected to
the protective conductor system (according to IEC 61140, pro-
tection class I).
The measuring adapter must be used only for testing in environ-
ments of measuring category CAT II according to
IEC/ EN 61010-1.
Make sure not to connect and test more than one test sample or
one extension cable at a time.
In case of proper use according to the specifications, the
safety of both the user and the device is ensured.
Please read the operating manual of the BENNING MA 3 and
the operating manual of the appliance tester carefully and
thoroughly before using the product. Please observe all in-
structions of the relevant operating manuals.
The measuring adapter must not be used:
•with the housing being open,
•in case of visible external damage,
•in case of damage of the CEE connectors, CEE sock-
ets, connecting line or connector,
•in case of strong excessive strain or if the load limits
stated in the technical data have been exceeded,
•if the device has been stored under unfavourable con-
ditions for a longer period of time (high exposure to
dust, moisture or excessive temperatures).
Non-observance might involve damaging or destruction of the
BENNING MA 3 measuring adapter and/or of the connected
test sample!
2.2. Symbols used
Attention! Danger! Please observe documenta-
tion!
Warning of dangerous voltage!
Note to be observed imperatively.
CAT II
Device of measuring category II (max. 300 V)
Ground (voltage against ground).
This symbol on the measuring adapter means
that the measuring adapter complies with the rel-
evant EU directives.
The device must not be disposed of via the do-
mestic waste. Further information regarding the
WEEE mark can be accessed on the Internet by
entering the search term “WEEE”.

Instructions
3. Inspection characteristics
All tests that can be carried out with you appliance tester
for devices with shock-proof socket and that are supported
by the BENNING MA 3 measuring adapter can now be
performed in an identical way for devices with CEE con-
nector.
Please observe the following aspects during tests us-
ing your appliance tester:
• When testing the protective conductor resistance, the
value of the measured protective conductor resistance
increases by the share caused by the protective conduc-
tor line of the BENNING MA 3 measuring adapter.
In case of measuring results near the admissible limiting
value, measure the protective conductor resistance of
the measuring adapter at the PE connection of its CEE
socket and subtract it from the total measuring value of
the system.
• During insulating resistance or alternative leakage cur-
rent tests, the three phases L1, L2, L3 and the neutral
conductor N of the test sample are shorted.

BENNING MA 3 measuring adapter
2
4. Operating elements
1
2
3
4
5
6
7
8
9
10
Meaning Pos.
PE socket for PE test probe (for RPE cable test) 1
CEE connector: 16 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE, 6h 2
CEE connector: 16 A, 50 Hz to 60 Hz, 230 V, L+N+PE, 6h 3
CEE connector: 32 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE; 6h 4
Status LED indications: CEE connector (3-pin/5-pin) 5
Rotary switch (for RInsu test, alternative leakage current test, functional test and phase sequence test
of cables) 6
CEE socket: 16 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE, 6h 7
CEE socket: 16 A, 50 Hz to 60 Hz, 230 V, L+N+PE, 6h 8
CEE socket: 32 A, 50 Hz to 60 Hz, 380 V to 415 V, 3L+N+PE; 6h 9
PE contacts, CEE socket 10

BENNING MA 3 measuring adapter
3
5. Connecting the BENNING MA 3
The BENNING MA 3 measuring adapter is
equipped with a PTC thermistor as short-circuit
protection.
As the PTC thermistor limits the maximum cur-
rent, it is not possible to carry out functional
tests according to VDE 0701-0702 with the
BENNING MA 3 measuring adapter.
Use the BENNING MA 3 measuring adapter
only for the intended tests described in this
manual.
The manufacturers’ specifications or normative
restrictions with regard to all tests involved must
be adhered to.
To do this, thoroughly read the notes stated in
the corresponding standard, in the manufactur-
ers’ specifications of the test sample and in the
operating manual of the appliance tester.
Before you can start testing, you have to connect the
BENNING MA 3 measuring adapter to your appliance
tester.
To do this, proceed as follows:
Make sure that the appliance tester you are using is
ready for operation.
Connect the shock-proof plug of the BENNING MA 3
measuring adapter to the test socket of your appli-
ance tester.
Connecting the BENNING MA 3
Connecting the BENNING MA 3 to the appliance tester
Connection diagram
6. Testing with the BENNING MA 3
6.1. Testing of three-phase devices
It is possible to test single-phase devices in the
same way.
6.1.1. RPE – Protective conductor resistance
Before testing
Disconnect the test sample from the mains
supply!
The maximum testing current for RPE meas-
urement is
10 A
!
The rotary switch of the
BENNING MA 3 can be
used for RPE measure-
ment in any locking posi-
tion.
Before starting the test, determine the internal RPE re-
sistance of the measuring adapter.
Internal RPE resistance of the measuring adapter
RPE – BENNING MA 3

Start the RPE measurement on your appliance
tester.
Contact the test probe of the appliance tester with
the PE contact (pos. 10, chapter 4
“Operating elements”)
of the corresponding CEE socket
(see figure below “RPE-BENNING MA 3”).
Write down the measured RPE value.
 Follow the test procedure Class I, RPE for “porta-
ble test samples”.
RPE – BENNING MA 3 (e. g. CEE 5-pin, 32 A)
Setup for measuring the internal RPE resistance of the MA 3
Connection diagram
Detailed view

BENNING MA 3 measuring adapter
4
Test procedure VDE 0701-0702
Class I; RPE
Portable test sample
Connect the CEE connector of the test sample to the
corresponding CEE socket of the BENNING MA 3
measuring adapter.
Start the RPE measurement on your appliance tester.
Use the test probe to scan all accessible conductive
parts of the test sample that are connected to the pro-
tective conductor.
Read the
RPE
measuring result shown on the display of
the appliance tester.
Subtract the measured RPE value of the
BENNING MA 3 from the RPE measuring result of the
test sample.
As a result, you will obtain the measured RPE value of the
test sample.
Edit the measured RPE value in the appliance tester ac-
cording to the calculated measuring value.
The manufacturer recommends to write down
the known measured RPE values of all CEE
connections of the BENNING MA 3 for future
measurements and add them to the measuring
adapter.
Application
Class I; RPE
Portable test sample
Connection diagram
Circuit diagram
6.1.2. RInsu – Insulating resistance
Before testing
Disconnect the test sample from the mains
supply.
Switch the rotary switch of
the BENNING MA 3 to the
locking position “L1-L2-L3”.
Test procedure VDE 0701-0702
Class I; RInsu
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
Start the RInsu measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
(depending on the RInsu test sample).
As a result, you will obtain the measured RInsu value of
the test sample.
Insulation faults
In case of an insulation fault, i. e. if the value
falls below the admissible insulation re-
sistance, you can determine the external con-
ductor at which the insulation fault occurs by
changing the position of the rotary switch.
To do this, successively turn the rotary switch to the
positions “L1”, “L2” and “L3” while observing the
measured values displayed on the appliance tester.
1. If the measured insulating resistance is within the
admissible limits, the selected external conductor is
not defective.
2. If the measured insulating resistance is outside the
admissible limits, the selected external conductor or
neutral conductor is defective.
3. If a fault occurs in every locking position of the ro-
tary switch, the neutral conductor is affected.

BENNING MA 3 measuring adapter
5
Application
Class I; RInsu; LN to PE
Portable test sample
Connection diagram
Circuit diagram
Class I; RInsu; secondary to PE
Portable test sample
Connection diagram
Circuit diagram
Class I; RInsu; LN to secondary
Portable test sample
Connection diagram
Circuit diagram
Class I; RInsu; LN to accessible conductive parts without PE
Portable test sample
Connection diagram
Circuit diagram

BENNING MA 3 measuring adapter
6
Class II; RInsu; LN to bodies
Portable test sample
Connection diagram
Circuit diagram
Class II; RInsu; LN to secondary
Portable test sample
Connection diagram
Circuit diagram
6.1.3. Alternative leakage current measurements
The BENNING MA 3 can be used for measuring the fol-
lowing leakage or fault currents by means of the alterna-
tive leakage current measurement method, provided that
the test is supported by the connected appliance tester:
•IPE – protective conductor current
•ICont – contact current
•ILeak – device leakage current
•IPLeak – patient leakage current
Before testing
Disconnect the test sample from the mains
supply.
Switch the rotary switch of
the BENNING MA 3 to the
locking position “L1-L2-L3”.
Test procedure VDE 0701-0702
Class I; IPE
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
Start the IPE measurement on your appliance tester.
As a result, you will obtain the measured
IPE
value of the
test sample.
Application
Class I; IPE – protective conductor current
Portable test sample
Connection diagram
Circuit diagram

BENNING MA 3 measuring adapter
7
Test procedure VDE 0701-0702
Class I; ICont – contact current
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
Start the
ICont
measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
As a result, you will obtain the measured
ICont
value of
the test sample.
Application
Class I; ICont – contact current
Portable test sample
Connection diagram
Circuit diagram
The contact current is determined for devices of protec-
tion class II that raise concerns as to an RInsu measure-
ment. Moreover, it is checked to prove the proper insula-
tion capacity under mains voltage. This also applies to de-
vices of protection class I with accessible conductive
parts which are not connected to the protective conductor.
Test procedure VDE 0751-1
Class I; ILeak – device leakage current
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
Start the
ILeak
measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
As a result, you will obtain the measured
ILeak
value of
the test sample.
Application
Class I; ILeak – device leakage current
Portable test sample
Connection diagram
Circuit diagram

BENNING MA 3 measuring adapter
8
Test procedure VDE 0751-1
Class I; IPLeak – patient leakage current
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
 Start the
IPLeak
measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
As a result, you will obtain the measured
IPLeak
value of
the test sample.
Application
Class I; IPLeak – patient leakage current
Portable test sample
Connection diagram
Circuit diagram
Test procedure VDE 0751-1
Class II; IPLeak – patient leakage current
Portable test sample
Connect the CEE connector of the test sample to the
CEE socket of the BENNING MA 3.
 Start the
IPLeak
measurement on your appliance
tester.
Contact the test probe(s) of the appliance tester with
all necessary measuring points
As a result, you will obtain the measured
IPLeak
value of
the test sample.
Application
Class II; IPLeak – patient leakage current
Portable test sample
Connection diagram
Circuit diagram

BENNING MA 3 measuring adapter
9
6.2. Testing of extension cables
6.2.1. RPE – Protective conductor resistance
Before testing
The maximum testing current for RPE meas-
urement is 10 A!
The rotary switch of the
BENNING MA 3 can be
used for RPE measure-
ment in any locking posi-
tion.
Before starting the test, determine the internal RPE re-
sistance of the measuring adapter.
Internal RPE resistance of the measuring adapter
RPE – BENNING MA 3
 Start the RPE measurement on your appliance
tester.
Contact the test probe of the appliance tester with
the PE contact of the corresponding CEE socket
(see figure “RPE – BENNING MA 3”).
Write down the measured RPE value.
 Follow the test procedure Class I, RPE for “porta-
ble test samples”.
The manufacturer recommends to write down
the known measured RPE values of all CEE
connections of the BENNING MA 3 for future
measurements and add them to the measuring
adapter.
RPE – BENNING MA 3 (e. g. CEE 5-pin, 32 A)
Setup for measuring the internal RPE resistance of the MA 3
Connection diagram
Detailed view
Test procedure VDE 0701-0702
Class I; RPE (e. g. CEE 5-pin, 32 A)
Cable test
Connect both cable connections to the corresponding
CEE sockets of the BENNING MA 3.
Connect the test probe of your appliance tester to the
PE socket (see pos. 1, chapter 4) of the BEN-
NING MA 3.
Start the RPE measurement on your appliance tester.
Read the RPE
measuring result shown on the display of
the appliance tester.
Subtract the measured
RPE
value of the
BENNING MA
3from the RPE measuring result of the test sample.
As a result, you will obtain the measured RPE value of the
test sample.
Edit the measured RPE value in the appliance tester ac-
cording to the calculated measuring value.
Application
Class I; RPE (e. g. CEE 5-pin, 32 A)
Cable test
Connection diagram
Detailed view
Circuit diagram

BENNING MA 3 measuring adapter
10
6.2.2. RInsu – Insulating resistance
Before testing
Switch the rotary switch of
the BENNING MA 3 to the
locking position “L1-L2-L3”.
Test procedure VDE 0701-0702
Class I; RInsu
Cable test

Connect both cable connections to the corresponding
CEE connectors of the BENNING MA 3.

Start the RInsu measurement on your appliance
tester.
Insulation faults
In case of an insulation fault, i. e. if the value
falls below the admissible insulation re-
sistance, you can determine the external con-
ductor at which the insulation fault occurs by
changing the position of the rotary switch.

To do this, successively turn the rotary switch to the po-
sitions “L1”, “L2” and “L3” while observing the RInsu
values displayed on the appliance tester.
1. If the measured insulating resistance is within the ad-
missible limits, the selected external conductor is not
defective.
2. If the measured insulating
resistance is outside the ad-
missible limits, the selected external conductor or the
neutral conductor is defective.
3. If a fault occurs in every locking position of the rotary
switch, the neutral conductor is affected.
Application
Class I; RInsu; LN to PE
Cable test
Connection diagram
Circuit diagram
6.2.3. Functional test and phase sequence test of
cables
Before testing
The functional test and phase sequence test of cables can
be applied to CEE connecting cables and extension ca-
bles.
The BENNING MA 3 measuring adapter is
supplied with mains voltage.
The functional test and phase sequence test of
cables may only be carried out after the RPE
and RInsu tests have been passed.
For single-phase connecting cables or exten-
sion cables (CEE socket, 3-pin), the rotary
switch must be set to the locking position “L1“
or “
L1-L2-L3
“.
Test procedure
Class I; functional test and phase sequence test of
cables
Cable test
Switch the rotary switch of
the BENNING MA 3 to the
locking position “L1-L2-L3”.
Connect both cable connections to the corresponding
CEE sockets of the BENNING MA 3.
Switch the mains voltage to the test socket of the appli-
ance tester.
Observe the status LED display of the corresponding
CEE socket.
Compare the displayed LED status with the function
table in chapter 8.
Successively turn the rotary switch to the positions
“L1”, “L2” and “L3”.
Compare the respectively displayed LED status with
the function table in chapter 8.
The LED display must show the status “pass” in any rotary
switch position.

BENNING MA 3 measuring adapter
11
7. Function table
Rotary
switch
position L1-N L2-N L3-N Result
L1, L2,
L3
L1, L2, L3 pass
LN shorted or N in-
terrupted
L1 interrupted
L2 interrupted
L3 interrupted
L1
L1 pass
L1-N shorted or
L1 or N
interrupted
L1-L2 shorted
L1-L3 shorted
L2
L2 pass
L2-N shorted or
L2 or N
interrupted
L1-L2 shorted
L2-L3 shorted
L3
L3 pass
L3-N shorted or
L3 or N
interrupted
L1-L3 shorted
L2-L3 shorted
Remarks concerning the function table
LED status = switched on
LED status = switched off
8. Technical data
Nominal voltage: 230 V ± 15 %;
50 Hz to 60 Hz
Protection class Class Iacc. to:
IEC/ EN 61010-1
Measuring category CAT II
Ambient conditions: Height up to 2000 m above
sea level
Temperature range:
Operating temperature
Storage temperature 0.0 °C to 35.0 °C -20.0 °C to 60.0 °C
Max. relative humidity:
linearly decreasing
non-condensing 80.0 % at 30.0 °C 60.0 % at 40.0 °C
Protection category IP 40 with the case being open
IP 67 with the case being closed
Dimensions
W x D x H:
170 mm x 410 mm x 350 mm
Weight 4.2 kg
9. Maintenance
The BENNING MA 3 measuring adapter does not require
any special maintenance. Please make sure that the sur-
face near the connector contacts is clean and dry. For
cleaning, use a slightly moistened cloth. Do not use any
cleaning agents, abrasives or solvents.
10.Warranty terms
The BENNING MA 3 measuring adapter is subject to strict
quality control. In case of faults with regard to correct func-
tioning, we grant a manufacturer’s warranty of 24 months.
Manufacturing faults or material defects shall be elimi-
nated by us free of charge as far as the device shows mal-
function without external influence and is returned to us
without having been opened. Damages caused by falls or
incorrect use are excluded from warranty.

BENNING MA 3 measuring adapter
12
11.Service contacts
Spare parts management
Phone: [phone]
E-mail: [email protected]
General service requests
Phone: [phone]
E-mail: [e-mail]
Returns management
Phone: [phone]
E-mail: [email protected]
Training management
Phone: [phone]
E-mail: [email protected]
Technical support
Phone: [phone]
E-mail: [e-mail]

Text and illustrations correspond to the technical status at the time of printing. Subject to technical changes. No liability for printing errors.
Support / helpdesk
BENNING helpdesk team
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Website: www.benning.de