Gossen Metrawatt PROFITEST PRCD Operating Instructions

Operating Instructions

PROFITEST⏐PRCD

Adapter for Standards Compliant Testing of PRCDs
by Simulating Faults

Important

Read carefully before use!

Keep on file for future reference!

Please observe the manufacturer‘s details

on the devices under test!

3-349-797-15

5/2.18

8

7

6

4

1

2

10

3

9

Mains Connection

To P R C D O u t le t

To PR C D In l e t (PRCD IN)

5

11

(PRCD OUT)

Fault Selection

Mains disconnect, 1~OFF/3~OFF
– For RISO measurement

Mains power on, 1~ON/3~ON
– For fault simulation
– For RLO measurement

Phase LEDs

Phase Interrupt

Reversed Wires

Orange positions: testing at single-phase PRCDs
Green positions: testing at 3-phase PRCDs

Mains

– For tripping test with I

Nom

and measurement of time to trip

Connection

PROFITEST⏐PRCD Operating and Connections Overview

Connections Overview

1 Coupling plug to the outlet of a

3-phase PRCD

2 Earthing contact plug to the outlet of a

single-phase PRCD

3 Probe socket for contacting the on/off

switch on the PRCD

4 Earthing contact socket to the inlet of a

single-phase PRCD

5 Loop for measuring protective conductor

current with a current clamp transformer

6 CEE socket to the inlet of a 3-phase

PRCD

Instrument Overview

7 Mains power cable with earthing contact plug

8 3-phase mains power cable with

CEE outlet (1P+N+PE 16 A-6h)

9 PRCD inlet sockets connected in parallel

to sockets 4 and 6 – for connecting the
PROFITEST MXTRA during protective con­ductor and insulation measurements

10 PRCD outlet sockets connected in paral-

lel to plugs 1 and 2 for connecting the
PROFITEST MXTRA during protective con­ductor and insulation measurements

11 Five replaceable fuses

2 GMC-I Messtechnik GmbH

!

PROFITEST⏐PRCD Symbols – Scope of Delivery – Table of Contents

Meanings of Symbols on the Instrument
300 V CAT II

Maximum permissible voltage and
measuring category between con­nections and ground
Warning concerning a point of
danger

(attention:
observe documentation!)
EC mark of conformity

This device may not be disposed
of with the trash.
Further information regarding the
WEEE mark can be accessed on
the Internet at www.gossenme­trawatt.com by entering the
search term “WEEE”.

Meanings of Symbols in the Operating Instructions

LED L1, L2, L3, N or PE at test adapter

LED on LED off

PRCD LED at the device under test

LED on LED off

Scope of Delivery

1 Test adapter
1 Probe cable with plug-in test probe
1 Set of operating instructions

Table of Contents Page

1 Safety Precautions .................................... 4

2 Applications .............................................. 5

3 Initial Start-Up ........................................... 6

3.1 Testing the LEDs ......................................... 6

3.2 Mains Connection ....................................... 6

3.3 Connecting the PRCD .................................. 6

4 Measurements with the

PROFITEST MXTRA .................................... 6

Measuring Protective Conductor Resistance (Rlo) ....... 7

4.1

4.2

Measuring Insulation Resistance (Riso) ............. 7

4.3

Tripping Test with Nominal Residual Current and

Measurement of Time to Trip ............................... 8

4.4 Varistor Test (PRCD-K) ................................. 8

5 Protective Conductor Current Measurement 9

6 Fault Simulation ...................................... 10

6.1 PRCD-S (single-phase) ............................. 10

6.1.1 Simulated Interruption ....................................... 10

6.1.2 Simulated Wire Reversal .................................... 10

6.1.3 Simulation of PE to Phase – PE-UEXT ................. 10

6.1.4 Contacting the “ON” Key at the PRCD with the Probe 11

6.2 PRCD-K (single-phase) ............................. 11

6.2.1 Simulated Interruption ....................................... 11

6.3 PRCD-S (3-phase) .................................... 12

6.3.1 Simulated Interruption ....................................... 12

6.3.2 Simulated Wire Reversal .................................... 13

6.3.3 Simulation of PE to Phase ................................... 13

7 Characteristic Values .............................. 14

8 Maintenance ........................................... 14

8.1 Housing Maintenance ................................ 14

8.2 Safety Checks............................................ 15

8.2.1

Testing of Protective Conductor Resistance RPE ............15

8.2.2 Testing of Insulation Resistance: ......................... 15

8.2.3 Contact Current Measurement ............................ 16

8.3 Fuse Replacement ..................................... 16

8.4 Return and Environmentally Sound Disposal 16

9

Repair and Replacement Parts Service, Calibration

Center and Rental Instrument Service .................16

10 Product Support ...................................... 16

GMC-I Messtechnik GmbH 3

PROFITEST⏐PRCD Safety Precautions

1 Safety Precautions

The test adapter has been manufactured
and tested in accordance with the following
safety regulations:

IEC/EN 61010-1 / VDE 0411-1, DIN VDE
0404, IEC/EN 61577 / VDE 0413-2,-4 /
DIN EN 61557-16 / VDE 0413-16 (draft)
Safety of the operator, as well as that of the
test adapter and the PRCD, is only assured
when it is used for its intended purpose.

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.
Read the operating instructions for the PROFITEST
MXTRA as well, in particular the sections con­cerning the R
ments, as well as the tripping test.

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
concerning performance and evaluation of
the test.

Observe the following safety precautions:

• The instrument may only be connected
to electrical systems with a maximum of
230/400 V which comply with applicable
safety regulations (e.g. IEC 60346, VDE

0100) and are protected with a fuse or
circuit breaker with a maximum rating of
16 A.

• The test adapter may only be used for
testing PRCDs.

• No power consuming devices may be
connected to the earthing contact and
CEE sockets.

• The test adapter may not be used as an
extension cord.

• Measurements within electrical systems
are prohibited.

• Make certain that the measurement
cables are in flawless condition, e.g. no
damage to insulation, no cracks in
cables or plugs etc.

, R

and time-to-trip measure-

LO

ISO

• When using a test probe with coil cord
(PROFITEST MXTRA):
Grip the tip of the test probe firmly, for
example during insertion into a jack
socket. Tensioning at the coil cord may
otherwise cause the test probe to snap
back resulting in possible injury.

• Insulation resistance can only be mea­sured at voltage-free objects.

• Do not touch the insulation measuring
instrument’s test probes (PROFITEST
MXTRA) during insulation resistance mea­surements!

• Please observe the manufacturer‘s
details on the devices under test!

Fuse Replacement

All fuses for neutral and phase conductors
are accessible from the outside (see section

8.3). The fuses may only be replaced when

the instrument is voltage-free, i.e. the instru­ment must be disconnected from mains
supply power and may not be connected to
a measuring circuit. The fuse type must
comply with the specifications in the techni­cal data or the labeling on the instrument
(see section 7).

Opening the Instrument / Repairs

The test adapter may only be opened by
authorized, trained personnel in order to
ensure flawless operation and to assure that
the guarantee is not rendered null and void.

Even original replacement parts may only be
installed by authorized, trained personnel.

If it can be ascertained that the test adapter
has been opened by unauthorized person­nel, no guarantee claims can be honored by
the manufacturer with regard to personal
safety, measuring accuracy, compliance
with applicable safety measures or any con­sequential damages.

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Attention!

!

PROFITEST⏐PRCD Applications

The test adapter may not be used:

• If external damage is apparent, for exam­ple if parts which conduct dangerous
touch voltage are freely accessible,
if its LEDs are defective (voltage at the
PRCD IN would no longer be indicated in
this case)

• If the seal or sealing lacquer has been
removed as the result of repairs or
manipulation carried out by a non-autho­rized/certified service provider

• With damaged connection and/or mea­surement cables, e.g. interrupted insula­tion or kinked cable

• If it no longer functions flawlessly

• After extraordinary stressing due to transport

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

2 Applications

Testing of PRCDs with the Test Adapter by
Simulating Faults

The following faults can be simulated with
regard to mains supply power to the PRCD:

• Wire reversals

• Failure of individual conductors
(undervoltage detection)

• Interference voltage on the protective
conductor
a) by connecting the phase conductor

to the protective conductor
(PE-U

switch setting) or

EXT

b) by touching the “on” key of the

single-phase PRCDs with the probe

The evaluation of the PRCD’s reaction to
each respective fault is strictly visual:

• PRCD active or inactive
(indicator lamp on the PRCD)

• Fault indication by means of LEDs on the
test adapter

In any case, comply with the manu­facturer’s recommendations con­cerning tests to be conducted in
accordance with DGUV Provision 3.

Testing of PRCDs with the Test Adapter by Simu­lating Faults and Measuring Protective Conductor
and Insulation Resistance, as well as Tripping
Current and Time to Trip, using the PROFITEST
MXTRA Test Instrument

The following functions are possible after
connecting the PROFITEST MXTRA test instru­ment to the test adapter:

• There are three preset test sequences:
Single-phase PRCDs:
– PRCD-S: 11 test steps
– PRCD-K: 4 test steps
3-phase PRCDs:
– PRCD-S: 18 test steps

• The test instrument runs through all test
steps semi-automatically:
Single-phase PRCDs: 10 test steps
3-phase PRCDs: 17 test steps

• Each test step is evaluated and
assessed by the user (go/no-go) for later
documentation.

• Measurement of the PRCD’s protective
conductor resistance using the test
instrument’s R
that the protective conductor measure-

function. Please note

LO

ment is a modified RLO measurement
with ramp sequence for PRCDs, which is
only available with the PROFITEST MXTRA
test instrument.

• Measurement of the PRCD’s insulation
resistance using the test instrument’s
R

function.

ISO

• Tripping test with nominal residual cur­rent using the test instrument’s I
function.

F

• Measurement of time to trip using the
test instrument’s I

function.

ΔN

• Varistor test for PRCD-K:
Measurement via ISO ramp

Measuring Protective Conductor Current

Protective conductor current or bias current
may result in premature tripping of PRCDs.

For this reason, the protective conductor is
led out of the housing as a loop between
surface mount sockets 4 and 6. This makes
it possible to measure any protective con­ductor current with the help of a current
clamp transformer.

GMC-I Messtechnik GmbH 5