Metabo Welding Technology - Manual (Page 6)

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WELDING GLOSSARY
MICROPROCESSOR
CONTROL
Electronic control (Smart Intelligence) that
takes over the control within the current
source using state-of-the-art electronics.
The advantage is an optimum welding
result.
MIXED LIGHT ARC
A transition light arc that lies between short
and long light arcs. The drop transitions take
place partly in the short circuit (see long arc).
PFC
Power Factor Control. For sinusoidal current
consumption from the mains. The advantage
is the lower current consumption or a higher
welding output at 230 V.
POINT-TO-POINT CONTROL
Electronic control during MIG/MIG welding
that automatically switches off the wire feed.
The advantage is an even dot size during
welding.
PRIMARY TIMING
Inverter principle. The mains frequency
of 50 Hz is transformed to a frequency of up
to 100 kHz by an electronic unit in front of
the transformer. Advantage: Small and light
welding devices.
POTENTIAL SEPARATION
Also referred to as galvanic separation.
Insulated structure between two voltages,
e.g. mains voltage and welding current.
CLEANING EFFECT
See rectifier.
APPARENT OUTPUT
Total consumed power of a device from the
mains (or current generator). The apparent
output is the sum of idle power and actual
output. Measured in kVA.
PROTECTION TYPE
(PROTECTION CLASS)
Specification for the protection of a device
from water (rain) and dirt.
(e.g. IP 23:
2 = protection against foreign matter
≥ Ø 12.5 mm,
3 = protection against splashes of water)
SECONDARY TIMING
Inverter principle. The mains frequency is
boosted by an electronic unit behind the
transformer.
VOLTAGE
The pressure (force) that enables electrons
to flow in a closed current circuit. Measured
in Volt (V).
SPRAY ARC
MIG/MAG light arc with fine-drop and
short-circuit-free transition using mixed gas
or argon. Especially suitable for fillet welds
and V-welds (medium and top layers).
CURRENT
Number of electrons that flow through a
conductor in a closed current circuit.
Measured in Ampere (A).
S-MARK
Approval sign. Devices with this sign have a
max. no-load voltage of 113 V direct current
or 48 V alternating current. They may then
be used at welding locations with increased
electrical danger (e.g. for container and tank
construction).
THYRISTOR
Electronic component (semi-conductor).
Works like a controlled diode, thereby
allowing the welding voltage and welding
current to be controlled.
TRANSFORMER
Converter. Converts the mains voltage to
harmless welding voltage. The possible
welding current is increased in the same
proportion.
TRANSISTOR
Electronic component (semi-conductor).
Works as an electronic on/off switch.
Analogue and digital control of the
electrical current (large currents) possible
with small current intensities.
EFFECTIVE OUTPUT
Power that is released as welding power
by a device. Measured in Watt (W).
2/4 CYCLE CONTROL
Welding torch operation option. 2 cycles =
welding with permanently pressed torch
button, 4 cycles = starts on pressing the
torch button the first time, switches off by
repeated pressing of torch button (button
need not be held down during welding).