Testing The Contact Current Of The Welding Circuit; Figure 26Testing The Contact Current Of The Welding Circuit (Connection Diagram, Circuit Diagram) - Benning ST 755+ Operating Manual

Procedure
1. Start the test.
2. Use the test probe for measuring on the poles of the secondary side.
3. Check the measured values for compliance with the technical data of the test sample.
– AC welding voltage
– DC welding voltage
– Peak value (peak) of the welding voltage
– Welding current
9.5.11

Testing the contact current of the welding circuit

Testing the contact current of the welding circuit [} page 47] is intended to check the contact
current for compliance with the rated values of test samples according to VDE 0544‑4.
Requirements
• Approved safety measuring lines
• Please observe the requirements for measuring [} page 71].
• The test sample is disconnected from the mains.
• Make sure that you are familiar with the procedure for manual [} page 77] and automatic
[} page 76] testing.
• Make sure that you know the necessary measuring points.
• The test sample is connected according to the connection diagram.
• Please observe the operating manual and the technical data of the test sample.
Figure 26: Testing the contact current of the welding circuit (connection diagram, circuit diagram)
1 Contact current of the welding circuit (Class I, I
94
1
The shock-proof plug of the test sample is plugged into the test socket of the device.
Use the test probe for measuring on both poles of the secondary side of the test
sample.
BENNING ST 755+ / ST 760+
2
)
Cont
Testing
9.5 Individual tests
5284 / 08/2023 en