Gossen 702 User Manual

Operating Instructions

SECUTEST®SII

Test Instrument for DIN VDE 0701, 0702 and 0751

3-349-223-03

8/11.05

11

12

13

SECUTEST SI I

14 15

SONDERS232 5 4

VDE 0701

T. 200

T. 240

VDE
0702

VDE 0751

OFF

MENU

FUNCTION-TEST

230 V

45678910

3

2

1

Feature F01

3

L

2

N

1

L

T. 1

N

SL

Note
Contact problems with exposed conductive parts
when using the standard probe with test tip

In order to assure good contact, surface
coatings must be removed from devices
under test with special tools at a suitable
location so that the surface has a metallic
shine.

23

18

☞

20

19
18

The tip of the test probe is not suitable for

17

16

scratching away paint, because this may
impair its coating and/or mechanical
strength.
The brush probe may be more suitable than
the test probe in certain individual cases.

22

These operating instructions describe an
instrument with firmware version 6xx.

21

2 GOSSEN METRAWATT GMBH

Upper left figure

1 Jack for protective conductor at device under test (feature F01)
2 Jack for neutral conductor at device under test (feature F01)
3 Jack for phase conductor at device under test (feature F01)
4 Jack for connecting the probe
5 Jack for connecting the probe
6 Function selector switch

– VDE-…: Automatic test sequence according to selected standard
– OFF: Instrument is switched off (no disconnection from mains)
– MENU: Setup: Device configuration

R

… : Individual tests

– FUNCTION TEST: Function test

SL

7 scroll key for menu and parameter selection

scroll key for menu and parameter selection

8

9 LCD panel
10 Socket connector for RS 232 interface
11 Signal lamp for mains connection error

key for entry, for starting test sequences and for finger contact

12

i

help key (context sensitive)

13
14 Key next to the symbol for switching test voltage to

the test socket (only possible if symbol LED is blinking)

15 Signal lamp for the functions text

Lower Left figure

16 Push-buttons (left and right) for releasing the handle from its snap-in position
17 Standard outlet socket (test socket) for connecting the device under test
18 Push-buttons (left and right) for releasing the lid
19 Compartment for probe and accessories
20 Lid
21 Test probe
22 Carrying handle and tilt stand
23 Cover or printer module (feature E01)

Overview of Available Probe Types

Probe Type Application Special Features

Standard probe (test probe with
coil-cable and alligator clip)

1)

SK2

SK5 option
(feature KD01 or accessory)

Brush probe
Can be plugged onto all above
listed probes and test probes

1)

☞

1)

Accessory

Note
Use of probes other than those specified above:

Text current:
200 mA

Test current:
200 mA

Leakage current,
protective conduc­tor resistance

none

Probe with plain cable (not coil-cable),
2meters long

Special probe in combination with “automatic
recognition of measuring point change”
function (see

For contacting devices under test with rotating,
vibrating, exposed conductive parts

chapter 13).

Cables plugged into jacks 4 and 5 must be short-circuited in
order to perform the probe test, either by plugging the cable
ends together or by means of a conductive surface at the device
under test (4-wire measurement).
Remove any corrosion from the device under test.

!

Data Security

Measurement data, report data and user entries are stored to RAM at the
SECUTEST

®

PSI printer module (feature E01), as long as the respective

battery supplies the required amount of voltage.
Save your data to a PC on a regular basis in order to prevent any loss of

data at the printer module.
We assume no liability for data loss.

We recommend the following PC programs for data processing and data
management:

• PS3 (transmission of measurement data to a PC, documentation,
management, report generating and deadline follow-up)

• SECU 601 (program for activating the data base function in the
instrument (DBmed option), if not already available as a feature)

• PC.doc-WORD (report and list generation

• PC.doc-ACCESS (test data management)

GOSSEN METRAWATT GMBH 3

Contents Page Contents Page

1 Applications ...................................................................................6

1.1 Table: Types of DUTs – Tests – Regulations ....................................................6

1.2 Table: Individual Measurements and Regulations ............................................6

1.3 Table: Leakage Current Types ........................................................................7

1.4 List of Possible Options for SECUTEST

®

SII Device Series .................................7

2 Safety Features and Precautions ...................................................8

9 Individual Measurements ............................................................16

9.1 Measuring Protective Conductor Resistance ................................................. 16

9.2 Insulation Resistance R

9.3 Measuring Leakage Current ......................................................................... 19

9.3.1 Contact Current I

9.3.2 Residual Current ΔI ..................................................................................... 19

9.3.3 Device Leakage Current I

. .......................................................................... 17

ISO

(probe current, housing leakage current) ...................19

Contact

per DIN VDE 0751 .............................................19

DL

9.4 Equivalent Leakage Current ......................................................................... 20

3 Initial Start-Up ................................................................................9

3.1 Connection to the Mains (230 V, 50 Hz) ..........................................................9

3.2 Automatic Recognition of Mains Connection Errors ........................................10

4 General Notes ..............................................................................10

4.1 Online Instructions .......................................................................................10

4.1.1 Automatic Safety Class Selection ..................................................................10

4.1.2 Manual or Automatic Operating Sequences ...................................................10

4.2 Online Help .................................................................................................10

4.3 Adjusting Contrast .......................................................................................11

4.4 Configuring Device Parameters, Setting Date and Time ..................................11

4.5 Configuring Measurement and Sequence Parameters .................................... 11

4.6 Setting Limit Values ..................................................................................... 11

4.7 Saving the Settings ......................................................................................11

9.5 Probe Voltage U

9.6 Alternating / Direct Voltage U

9.7 Resistance R (feature F01) ........................................................................... 22

9.8 Measurements with Accessories (feature F01) .............................................. 22

9.8.1 Alternating Current I

9.8.2 Temperature T with Pt100/1000 Sensor (feature F01) .................................. 23

10 Function Test ...............................................................................24

11 Measurements – Selector Switch Settings for Standards ...........26

11.1 Test Sequences .......................................................................................... 26

11.2 Setting Up Test Sequences .......................................................................... 27

11.3 Configuring Measuring Parameters ..............................................................27

11.4 Testing Devices in Accordance with DIN VDE 0701, Parts 1 and 200 ............. 28

– Max. 300 V .............................................................. 21

probe

with Clip-On Transformer (feature F01) ........................22

Z

– Max. 253 V (feature F01) ...................... 22

AC/DC

11.5 Testing Devices in Accordance with DIN VDE 0701, Part 240 ........................30

5 Classification of Devices Under Test ............................................12

5.1 Safety Classes ............................................................................................12

5.2 Application Parts (electrical medical devices) .................................................12

6 Abbreviations ...............................................................................13

11.6 Testing Devices in Accordance with DIN VDE 0702:2004 .............................. 32

11.7 Testing Extension Cables for VDE 0701, Part 1, and VDE 0702

(option: EL1 adapter) ................................................................................... 34

11.8 Testing Multiple Outlets for VDE 0702 (optional EL1 adapter) ......................... 35

11.9 Testing in Accordance with DIN VDE 0751 .................................................... 36

7 Connecting the Device Under Test ...............................................14

8 Configuring Device Parameters ...................................................15

4 GOSSEN METRAWATT GMBH

Contents Page Contents Page

12 Storage in PSI Module (Feature E01)

19 Maintenance - Calibration ........................................................... 46

and Database Operations (Feature KB01 or DBmed option) ........ 38

12.1 Storing Measurement Data in the PSI Module ................................................38

12.2 Database Operations ...................................................................................38

12.2.1 Setting Up Test Sequences with PC Software ................................................38

12.2.2 Storing Test Results to the SECUTEST

‚

SII ......................................................38

20 Repair and Replacement Parts Service

DKD Calibration Laboratory and Rental Instrument Service ........ 46

21 Product Support .......................................................................... 47

13 Remote Control (Feature KD01 or SK5 Option) ............................ 38

14 Printing via PSI Module (Feature E01)

or with the Printer Adapter (DA-II accessory) ............................. 39

14.1 Print Out Test Data at the PSI Module ...........................................................39

14.2 Printing Test Results in Report Form .............................................................39

15 Direct Print-Out (feature KE01, SECU-dd option) ......................... 39

16 Characteristic Values .................................................................. 40

17 RS 232 Interface .......................................................................... 43

17.1 Transmission of Measurement Results to the SECUTEST®PSI ........................43

17.2 PC Connection ............................................................................................43

17.2.1 Software Evaluation of Measurement Results ................................................43

17.2.2 Instrument Control via Interface Commands ..................................................43

17.3 Interface Configuration and Protocol .............................................................43

18 Appendix ......................................................................................44

18.1 Evaluation of Measured Values for Individual Measurements

as well as for Calculated Quantities ..............................................................44

18.2 Index ..........................................................................................................45

Condensed instructions for PS3 software for maintenance and equipment
management are provided with the PS3 CD ROM.

They include important instructions regarding the following topics:

• PS3 demo with additional instructions

• Special features for reading measured values in from a data file

GOSSEN METRAWATT GMBH 5

1 Applications

1.1 Table: Types of DUTs – Tests – Regulations

Start-up
and Modifi­cations

Testing after
Repairs

Periodic
Tes ti ng

!

Attention!

The test instrument may not be used for measurements
within electrical systems!

Devices under test
to be tested in
accordance with the
following regulations

DIN VDE 0751:2001

DIN VDE 0701 Part 1:2000

DIN VDE 0701 Part 240

DIN VDE 0751:2001

DIN VDE 0702:2004

DIN VDE 0751:2001

Laboratory instruments ••

Measuring and control
instruments

Voltage generation
devices

Electric tools ••

Electric heating devices ••

Electric motor devices ••

Lamps ••

Devices for entertain­ment electronics,
information and commu­nications technology

Cable reels, extension
and connection leads

Data processing and
office equipment

Electrical medical de­vices, application parts

••

••

••

••

••

•••

1.2 Table: Individual Measurements and Regulations

Individual
Measurements
per Regulation

Test current [A]

DIN VDE 0701,

part 1

DIN VDE 0701,

part 200

DIN VDE 0701,

part 240

DIN VDE 0702

Protective conductor
resistance

Insulation resistance

Equivalent leakage
current

Equivalent (device)
leakage current

Residual current

Contact current

Absence of voltage
(exposed conductive
parts)

Patient leakage
current

Device leakage
current

0.2 ••••

•• •

••••

•••

••

•

Key

• Required test

DIN VDE 0751

•

•

•

6 GOSSEN METRAWATT GMBH

1.3 Table: Leakage Current Types

DIN VDE
0701-1

Equivalent
leakage
current

Contact
current / mea­surement for
absence of
voltage

Protective
conductor
current with
differential
current
measurement

DIN VDE
0702-1

Equivalent
leakage
current

Contact
current / mea­surement for
absence of
voltage

Protective
conductor
current with
differential
current
measurement

DIN VDE
0751-1 (2001)

Equivalent
device leakage
current

Probe to PE

Device leak­age current
during opera­tion

Device leak­age current
during opera­tion,
differential cur­rent method

The following
is measured:

PROBE
(connected to
protective
conductor) to
L & N

PROBE (open
protective
conductor) to
L & N

Protective con­ductor to PE

Protective con­ductor inter­rupted, probe
to PE

See chapter

9.3.2

Key

NC = Normal conditions
PAT = Patient application part
PE = Potential earthing
DPE = Protective conductor of the device under test

, mains protective conductor

1.4 List of Possible Options for SECUTEST®SII Device Series

Example for complete type designation (article number) of a
SECUTEST

®

SII:
M7030 E01 KD01 KE01 (only the designation of the basic device, M7030,
and features other than 00 are specified)

Features

Design AGM

Mains Connection for
Respective Country

User Interface
Language

Configuration
(settings in the
setup menu)

Printer Module

®

SECUTEST

Additional
Test Sockets
(cannot be retrofitted)

Database
DBmed Option
(Z853H)

Remote Control
SK5 Special Cable
(Z745K)

Direct Printing After
Each Measurement for
Automatic Test
Sequences
Read-Out via
SECU-dd Option
(Z853L)

DKD calibration
certificate

1)

2)

3)

4)

PSI

1)

RS 232

Each measured value is documented in this case, as opposed to the results of a
test sequence for which the poorest value for each given test is displayed.
Adapter set for international use (feature B00 - earthing contact socket - included)
With configuration for hospital beds of Safety Class 2 (pre-adjusted)
For multimeter functions, for measurements with accessories and for devices
under test without plug, including 3 plug-on quick clips

00 01 02 03 04 05 06 07 08 09 10 11 99

,

BD

C

DGB

D

GM

w/o with

E

w/o

F

KB

w/o with

w/o with

KD

KE

w/o with

w/o with

L

with

F CH

3)

4)

2)

GOSSEN METRAWATT GMBH 7

2 Safety Features and Precautions

The SECUTEST®SII test instrument has been manufactured and tested in
accordance with the following safety regulations:

IEC 61010-1 / DIN EN 61010-1 / VDE 0411-1 and DIN VDE 0404
DIN VDE 0413 Part 2 and 4

When used for its intended purpose, the safety of the user, the test
instrument and the device under test (electrical equipment or electrical
medical device) is assured.

Read the operating instructions carefully and completely before placing your test
instrument into service. Follow all instructions contained therein. Make sure that
the operating instructions are available to all users of the instrument.

Tests may only be performed by a qualified electrician or under the supervision
and direction of a qualified electrician. The user must be instructed by a qualified
electrician in the execution and evaluation of tests.

☞

Observe the following safety precautions:

• The instrument may only be connected to electrical systems with a

• Measurements within electrical systems are prohibited.

• Be prepared for the occurrence of unexpected voltages at devices

• Make certain that the measurement cables are in flawless condition,

• Grip the test probe firmly, for example during insertion into a jack

• Measuring of insulation resistance (equivalent leakage current)

Note

Manufacturers and importers of electrical medial devices must
provide documentation for the performance of maintenance by
trained personnel.

maximum of 230 V which are protected with a fuse or circuit breaker
with a maximum rating of 16 A.

under test (for example, capacitors can be dangerously charged).

e.g. no damage to insulation, no interruptions in cables or plugs etc.

socket. Tensioning at the coil cord may otherwise cause the test probe
to snap back resulting in possible injury.

The test is conducted with up to 500 V, with a current limit of
I < 10 mA. However, when touching the terminals (L or N), you will get
an electric shock which, in turn, may lead to accidents.
Feature F01: When connecting the DUT via jacks 1 to 3, special care
must be taken to avoid touching the open cables.

.

,

• Leakage current measurement
During leakage current measurement it is essential to ensure that the
DUT is operated at mains voltage. Exposed conductive parts may be
subject to hazardous contact voltage during the test and may not be
touched under any cricumstances. (A mains shutdown takes place
when the leakage current exceeds approx. 10 mA).

!

Attention!

The function test may only be performed after the DUT has
successfully passed the safety test!

The measuring and test instrument may not be used:

• If it demonstrates visible damage

• With damaged connector cables, measuring cables or patient ports

• If it no longer functions properly

• After extraordinary stresses due to transport

In such cases, the instrument must be removed from operation and
secured against unintentional use.

Meanings of Symbols on the Instrument

The symbols on the instrument have the following meanings:

Warning regarding dangerous electrical voltage

!

Warning concerning a point of danger
(attention: observe documentation!)

Test socket

VDE testing authority approval mark

This device may not be disposed with the trash. For further
details on the WEEE marking, please refer to our website
www.gossenmetrawatt.de and enter search key ’WEEE’.

8 GOSSEN METRAWATT GMBH

3 Initial Start-Up

3.1 Connection to the Mains (230 V, 50 Hz)

➭ Connect the mains plug at the test instrument to the mains power

outlet. The function selector switch can be set to any position.
If a mains outlet (earthing contact outlet) is not available, or if only a
3-phase outlet is available, the adapter socket can be used to connect
the phase conductor, the neutral conductor and the protective
conductor. The adapter socket has three permanently attached cables
and is included with the KS13 cable set

!

Attention!

If connection is not possible via an earthing contact outlet: Shut
down mains power first.
Then connect the cables from the coupling socket to the mains
using pick-off clips in accordance with the diagram.
Disconnection from mains power is only possible with the mains
plug.

U

= 230 V

L–N

green-yellow

green-yellow

green-yellow

L1

N

PE

L1

L2

L3

N

PE

L1

L2

L3

N

Mains Connection

GOSSEN METRAWATT GMBH 9

3.2 Automatic Recognition of Mains Connection Errors

The device automatically recognizes mains connection errors if the condi­tions in the following table have been fulfilled. The user is informed of the
type of error, and all measuring functions are disabled in the event of danger.

Typ e of Ma i n s

Connection Error

Voltage at protective

conductor PE to finger

contact

(key)

Protective conductor PE

and phase conductor L

reversed and/or

neutral conductor N

interrupted

Contact voltage at

protective conductor PE

to neutral conductor N

or phase conductor L

Mains voltage

too low lamp

1)

In SETUP – test sequence – IT system

!

Attention!

In either of the first two cases listed in the table above,
immediately disconnect the test instrument from the mains
and eliminate the error!

Message Condition Measurements

Text appears at

LCD

!

lamp

lights up

Text appears at

LCD

!

lights up

Press

key

U > 40 V

Voltage at PE

>65V

U > 25 V

U

< 90/180 V

L-N

disabled

impossible

(no supply power)

disabled, although

disabling can be

deactivated

possible

under certain

circumstances

1)

4 General Notes

4.1 Online Instructions

The performance of measurements and tests is quick and easy with the
SECUTEST
required connections, necessary work steps, operator errors,
measurement results and more in all measuring modes.
Information and test results appear at the dot matrix LCD in plain text.

4.1.1 Automatic Safety Class Selection

Depending upon the type of mains plug or the connection configuration
for the device under test, the test instrument recognizes the respective
safety class and recommends its use for the measurement to be
performed.

4.1.2 Manual or Automatic Operating Sequences

Depending upon selections made in the setup menu (selector switch in
the Auto position), the next measurement is started automatically after the
current measurement has been completed, or can only be started after
manual acknowledgement. The integrated online instructions are
adequate for most tests and measurements. However, the contents of
these operating instructions should nevertheless be read and observed.

4.2 Online Help

Online help can be queried and displayed at the LCD for all measuring
and test functions, and for almost all settings. Schematic diagrams which
illustrate proper connection of devices under test to the SECUTEST
can be displayed as well.

➭ Press the following key in order to query online help:

®

SII. Integrated online instructions inform the user regarding all

®

SII

☞

10 GOSSEN METRAWATT GMBH

Note

Voltage at the electrical system’s protective conductor PE may
result in distorted measurement values during testing for the
absence of voltage, or during leakage voltage measurements.

➭ Press the same key again in order to exit online help.

☞

Note

Online help can be queried during measurement by pressing
and holding the help key.

4.3 Adjusting Contrast

MENU

Set the selector switch to MENU.

Select the Setup menu, “back” is highlighted.

Activate contrast adjustment.

Press and hold the key.

Adjust contrast.

Return to the menu.

Store the contrast setting to permanent memory with the save function in
the setup menu.

4.4 Configuring Device Parameters, Setting Date and Time

Device parameters and functions which are valid for all selector switch
positions can be activated or deactivated with the selector switch in the

MENU position using the Setup parameter (see chapter 8 on page 15).

4.5 Configuring Measurement and Sequence Parameters

Measurement and sequence parameters, as well as functions, can be
activated or deactivated in the Setup menu (selector switch in the VDE
position) for the respective test regulation. Refer to chapter 11.3 on page
27 for the significance of the various parameters.

4.6 Setting Limit Values

Upon delivery, the limit values set forth (at the point in time of issue) in
applicable national and international standards are stored to the test in­strument. Limit values for each of the respective standards can be queried
and changed if required with the Setup > Limit Values menu (selector switch
in the VDE... position), but changes can only be made which result in even
stricter testing than is required by the respective standard.

Newly entered limit values become effective immediately. However, these
are only stored to memory permanently after activating the Store function
in the Setup menu for the respective standard.

If the limit values set forth in the standards for certain safety classes need
to be restored despite individualized settings, the All Values per Standard
menu function in the Limit Values submenu must be selected and
acknowledged with the Enter key.

If the limit values set forth in the standards are changed, the instrument’s
device software can be updated via the RS 232 interface.

4.7 Saving the Settings All of the settings and changes which have been entered to the Sequence,

Limit Values (selector switch in the VDE... position) and Zero Point (tempera-
ture measurement) (selector switch in the MENU position) menus, as well as

the selected contrast setting are retained until the selector switch is turned,
or the test instrument is disconnected from mains power. If settings and
changes should be retained even after mains power has been interrupted,
they must be saved in the Setup menu for the respective test regulation or
selector switch position (acknowledge the “Save” function).

GOSSEN METRAWATT GMBH 11

5 Classification of Devices Under Test

5.1 Safety Classes

Devices assigned to all of the following safety classes are equipped with
basic insulation, and provide for protection against electrical shock by
means of various additional precautions as well.

Safety Class I Devices

Exposed, conductive parts are connected to the protective conductor so
that they are not charged with voltage if the basic insulation should fail.

Safety Class II Devices

These devices are equipped with double insulation or reinforced
insulation.

Safety Class III Devices

These devices are powered with safety extra-low voltage (SELV). Beyond
this, no voltages are generated which exceed SELV. These devices may
not be connected to the mains.

Note: The DUT may only be connected to the test instrument at jacks 1
through 3 (Feature F01). Only a visual inspection, an insulation resistance
measurement or a measurement of the supply voltage can be performed,
see parameter “SC II I U

” on page 27.

V

The test is failed by a DUT with 300 kW with deactivated classification
function (= _), but it is passed with activated classification function (= x) if
the question is answered accordingly.

Similar possibilities for passing the test, although it might otherwise be
failed, are included in DIN VDE 0701, part 1.

If the DUT is connected via the jacks instead of the test socket, other limit
values apply because higher power consumption is possible in this case
(e.g. part 1 specifies a limit value of 1 mA per kW for equivalent leakage
current).

See also table: “Maximum Allowable Limit Values for Equivalent

Leakage Current in mA” on page 20.

5.2 Application Parts (electrical medical devices)

Type B Application Parts (body)

Devices of this type are suitable for both internal and external patient
applications, except for use in direct proximity to the heart.

These devices provide for adequate protection against shock especially
as regards:

• Reliable leakage current

• Reliable protective conductor connection if utilized

Devices of the following safety classes are allowable: I or II.

Parameter Classification (in the Sequence... menu)

The SECUTEST
ues of the respectively selected safety class. The test is failed if this limit
value is exceeded. However, devices under test exist for which higher limit
values are allowable.

If parameter classification is activated (= x), the user is asked if higher limit
values are allowable for the DUT. If “Yes” is entered, reevaluation ensues
and the DUT may pass the test.

Examples

If the insulation resistance test is failed, or if interference suppression
capacitors have been replaced, equivalent leakage current measurement
must be performed on DUTs with heating elements in accordance with
DIN VDE 0702.

12 GOSSEN METRAWATT GMBH

®

SII always tests in accordance with the strictest limit val-

Type BF Application Parts (body float)

Same as type B, but with type F insulated application parts.

Type CF Application Parts (cardiac float)

Devices of this type are suitable for use directly at the heart. The
application part may not be grounded.

Devices of the following safety classes are allowable: I or II.

6 Abbreviations

AE Error condition: application part grounded
B, BF, CF Classifications for application parts
OE Operational earth

ΔI Differential current, residual current
ΔI

max

EDL

A1/A2

EDL

PX±PE

EDL

SCII

HE Error condition: housing grounded
I

, I , IHL, I

L

I

Re

, I

I

EL

EDL

I

PE

IT system The IT system has no direct contact between active

I

Lmax

I

Z

L Phase conductor
PF Power factor
MedGV German medical device ordinance
MPG German medial product law
MSELV Medical safety extra-low voltage
N Neutral conductor
NC Normal conditions
P Active power
PA Functional earth (equipotential bonding)

Maximum residual current (during function test)
Equivalent device leakage current with designation A1/A2

(cross-reference in the standard)
Equivalent device leakage current for portable x-ray

+PE: with additional PE conductor
–PE: without additional PE conductor

Equivalent device leakage current for devices with
additional safety class 2 components

Leakage current (differential, probe or contact current)

probe

Residual current
Equivalent device leakage current
Earth leakage current (current at protective conductor)

conductors and grounded parts: bodies within the
electrical system are grounded.

Maximum load current (during function test)
Current at clip-on meter

R Resistance (only with feature F01)
R

R-ISO Insulation resistance

ISO,

R-ISO APP-PE Insulation resistance: application part to PE
R-ISO

INT. CARD.

Insulation resistance: intracardiac

(application at the heart)
R-ISO NL-PE Insulation resistance: neutral/phase conductor to PE
R

, R-PE Protective conductor resistance

PE

R-SL±Mains Protective conductor resistance limit value for

+mains: DUT with mains power cable

–mains: DUT without mains power cable

(protective conductor resistance limit value for mains

power cable only = 0.1 Ω)
S Apparent power
SELV Safety extra-low voltage
SFC Single-fault condition
PE Protective conductor
U

AC/DC

U

REF

AC/DC voltage (only with feature F01)

Reference voltage: voltage to which all leakage voltages

make reference (as a rule nominal line voltage)
U-ISO Test voltage for insulation measurement
U
U

U

L-N

MEAS

probe

Line voltage

Voltage with which testing was executed.

Displayed for all leakage current measurements.

Probe voltage
tOn-time
Temp Resistance temperature (only with feature F01)
W Electrical energy
ZVEH General Association of German Electricians

GOSSEN METRAWATT GMBH 13

7 Connecting the Device Under Test

➭ Connect the DUT in accordance with the schematic diagrams included

in the online help function.

Connection of the DUT to the test instrument depends upon:

• Type of connection:
– With plug (“to test socket” parameter), applies to EL1 adapter as well
– Without plug, single or multi-phase connection

(“to jacks” parameter), only with feature F01

– No connection to tester (“permanent connection” parameter)

• Whether or not an adapter is used:
– Adapter to socket (customer specific adapter)
– AT3-med to socket, adapter for devices

which are equipped with 5-pole, 16 A CEE plugs

– AT3-III to socket, adapter for devices

which are equipped 5-pole, 32 A CEE plugs,
see AT3-III operating instructions for test sequence.

• The DUT’s safety class (I, II or I I I)

☞

Note

The DUT must be switched on for all tests. Switches, relays,
temperature regulators etc. must all be taken into consideration.

If the test instrument is unable to automatically recognize how the DUT
has been connected, the recommended connection setup should be
double checked and determined manually if necessary.

➭ Position the

sequence.

➭ A selection of possible connection setups can be displayed by activat-

ing the

➭ Select the desired connection setup with the

acknowledge with the

Omitting the Protective Conductor Test in the Case of Fully Insulated Devices

You are testing a fully insulated safety class I device (e. g. screen, sub­mersible pump, etc.), which is not equipped with an external protective
conductor contact.

The decision as to the necessity of a protective conductor test in this case
is to be taken by a qualified electrician who should also assume responsi­bility.

You can omit the protective conductor test by pressing the key
soon as the following instruction is shown: „Please connect the probe
with the protective conductor of the DUT“.

cursor at the second line in the start menu for the test

key.

cursor and

key.

as

The test instrument automatically recognizes whether or not the DUT is
connected to jacks 1 through 3. If the instrument is equipped with feature
B00, 01 or 03, the instrument also recognizes whether or not a DUT has
been connected to the test socket. As a default setting, the program
sequence assumes that the plug from the DUT has been connected to
the test socket.

☞

14 GOSSEN METRAWATT GMBH

Note
Safety Class II Devices with Safety Class I Mains Plugs

If the device under test is equipped with a safety class I plug
although it complies with safety class II, safety class I is recog­nized by the test instrument. If this is the case, switch from safety
class I to safety class II in the initial menu.

Protective Conductor and Insulation Resistance Measurements for Permanently
Installed Devices Under Test

!

Attention!

Deactivate the electrical system which supplies power to the
device under test before connecting the test instrument!

➭ Remove the mains fuses from the device under test and disconnect

the neutral conductor N inside the device under test.

Measuring Contact Current (absence of voltage)

Make sure that the contacted parts are not grounded.

8 Configuring Device Parameters

MENU

General device parameters can be
configured and saved using Setup with
the selector switch in the MENU posi­tion.

Select Setup/Menu and acknowledge.

Select parameter and acknowledge, change setting and acknowledge.
Settings x / – … = function activated / deactivated

Limit values ...

Illumination Background illumination for the LCD. One of three

different conditions can be selected with the up and
down scroll keys:
x: continuously on, –: off
Numbers 1 through 9: duration in minutes after

which illumination is automatically deactivated.
Test time Duration of a single test (0 … 255 s)
Reference voltage: Voltage to which leakage current makes reference

(as a rule nominal line voltage)
Earth fault During the short-circuit test, testing is also performed

to determine whether or not a connection exists

between L/N and PE (short-circuit to exposed

conductive part). We assume that a short-circuit to

an exposed conductive part exists in the event of

leakage current greater than 15 mA from L/N to PE.

This value should be increased for some DUTs (in

particular high-current consumers), because greater

leakage currents are present.

Mains wait Line voltage is initially applied to the test socket.

However, testing does not begin until after the
number of seconds selected in “Mains wait” has
elapsed, e.g. in order to suppress measured values
during the warm-up phase.

Modem... Modem function available upon request
Test Sequence ...

Settings x / – … = function activated / deactivated
Single-fault

If the single-fault condition has been activated, the test
is interrupted as a failure as soon as an error occurs.

Auto Class PSI Test results (passed or failed ) for the various selector

switch positions are automatically assigned to the 8
statistics channels.

inc. Service Error Measurement results are compensated by taking

service error into consideration (measuring error).

IT Network

Testing in IT systems can be performed by suppressing
tests for U
not voltage is present at PE. (Leakage current measure-

PE-N

. The U

test determines whether or

PE-N

ment results may otherwise be distorted.)

Acst Sig, Seq An acoustic signal is generated for: incorrect con-

nection of the DUT, error in the electrical supply
system and the next test step.

Acst Sig, Meas An acoustic signal is generated for: measured value

fluctuations and test current polarity reversal.

Auto Point This function can be enabled with the help of an

upgrade program, e.g. Z745K (see chapter 13 on
page 38). An acoustic signal indicates whether or not
the probe is connected to the protective conductor.
The test sequence is run automatically.
Rapid signal frequency: probe connected

Slow signal frequency: next measuring point
Direct Printing See chapter 15 on page 39.
Reports ... Reports which have been saved to memory can be

selected from a list with an ID number and displayed

(see

chapter 14.2 on page 39

).

Service ... – Time and date settings

(if a printer module is used, the same time and date
must also be entered to the PSI- menu)

– Service functions (password required)

GOSSEN METRAWATT GMBH 15