Gossen Metrawatt SECULOAD-N Manual

Gossen Metrawatt Måleudstyr SECULOAD-N

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Side 1/4

Test adapter SECULOAD-N

for testing the off-load voltage of welding equipment per EN 60974 3-349-709-03

6/12.16

Operating Instructions

GMC-I Messtechnik GmbH 1

1 Standard Equipment

1 test adapter (article number Z745R)

1 measurement cable red, 1 measurement cable black,

2 measurement cables blue,

2 alligator clips blue for contacting the welding electrodes,

1 set of operating instructions German/English

2 Applications

In conjuction with a multimeter or a SECUTEST... test instrument,

the SECULOAD-N test adapter is designed for testing welding

equipment (subsequenly referred to as device under test or DUT)

in accordance with standard EN 60974-4:2007. According to this

standard, the peak values of the off-load voltage may not exceed

the limit values for any possible setting.

Attention! The peak value rectifier of the SECULOAD-N uses rectifier

diode 1N 4007 recommended by the standard. This diode is a

power rectifier diode and, due to its design principle, only suitable

for voltage sources with a low clock rate in the line frequency

range or for voltage sources with conventional transformers.

However, there is welding equipment in the market, which uses

pulsed voltage sources with considerably higher clock rates. The

equipment can produce pulses with high voltage which, in turn,

are not completely captured by the peak value rectifier of the SEC-

ULOAD-N. In these cases, the voltage issued by the SECULOAD-N

may be distinctly below the peak values in the output voltage of

the welding equipment. It is imperative that this fact be taken into

account in evaluating the measured values!

Special case: Welding instruments with an open-circuit voltage of less

than 30 V *

In this case, the

SECULOAD-N

does not provides for

any load control.

Measurements are performed with a load resistance of 5 k. For

such low voltages, load control can be neglected, so that the

measuring result is shown on the display even without pressing

the START key.

* For the purpose of verification, perform a direct voltage measurement of

your welding unit by using a multimeter or a SECUTEST... test instru-

ment (without having the test adapter connected in this case).

Special case: Welding instruments which deactivate open-circuit voltage

In this case, a certain key at the welding instrument must be

pressed consistently in order to prevent deactivation. Please refer

to the operating instructions of the welding instrument or contact

the manufacturer for details on such cases.

Test Sequences and Individual Measurements with the Test Adapter

The following test instruments include test sequences for welding

instruments in accordance with EN 60974-4:

•

SECUTEST S2N+w

•SECUTEST BASE(10)

•SECUTEST PRO (or Feature I01)

•SECUSTAR FM+

➭Only experts who are familiar with welding, cutting

and related processes are allowed to perform these

tests.

➭Persons with basic electrotechnical training are allowed

to perform maintenance work and periodic tests provided that

the welding equipment is not opened.

3 Safety Instructions

This instrument fulfills the requirements of the applicable EU

guidelines and national regulations. We confirm this with the CE

marking. The relevant declaration of conformity can be obtained

from GMC-I Messtechnik GmbH. The test adapter is manufac-

tured and tested in accordance with safety regulations

IEC 61010-1/DIN EN 61010-1/VDE 0411-1.

When used for its intended purpose, the safety of the operator, as

well as that of the instrument, is assured.

Please make sure that the output of the DUT is de-energized for connect-

ing it to or disconnecting it from the test adapter.

Before using the test adapter, the off-load voltage of the welding equip-

ment must be checked. Input voltages at the test adapter of more than

130 V are not permissible and result in the destruction of the test adapter.

In this case, the welding equipment must be repaired prior to testing it

with the test adapter.

In order to protect the internal resistor against overloading

between the red and black socket connectors of the test adapter,

these two socket connectors may not be short-circuited. Wait until the

measured voltage is no longer applied and/or the respective

capacitors are discharged (this is performed automatically during

operation with a SECUTEST... test instrument).

If the test adapter should nevertheless be overloaded once, volt-

age measurements are no longer possible. You are kindly

requested to send the test adapter to GMC-I Service GmbH for

repair in this case.

The test adapter may not be used

• for testing plasma jet welding equipment

• in the event of input voltages of more than 130 V

• in the event of any visible external damage

• if it no longer functions properly

Meaning of Symbols on the Instrument

Warning concerning a source of danger

(attention: observe documentation!)

CAT II Measurement category II device

Continuous, doubled or reinforced insulation

Indicates EC conformity

This device may not be disposed of with the trash. Fur-

ther information regarding the WEEE mark can be

accessed on the Internet at www.gossenme-

trawatt.com by entering the search term ’WEEE’

Carefully read the operating instructions before use, in particular the op-

erating instructions included with the test instrument with which you in-

tend to use the adapter.

Opening of Equipment / Repair

The equipment may be opened only by authorized service per-

sonnel to ensure the safe and correct operation of the equipment

and to keep the warranty valid.

Even original spare parts may be installed only by authorized ser-

vice personnel.

In case the equipment was opened by unauthorized personnel,

no warranty regarding personal safety, measurement accuracy,

conformity with applicable safety measures or any consequential

damage is granted by the manufacturer.

2 GMC-I Messtechnik GmbH

4 Connection facilities

Connection of SECUTEST S2N+w / SECUTEST S2N+(10)

➭Connect the welding current outputs with the input sockets of