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The arc utilized for arc welding is low voltage high current discharge. The voltage required for maintaining an arc is less than for striking the arc. Voltage drops & current increases as the arc is developed. The voltage required to strike DC arc is about 50-55 V & for AC is 80-90 V.It is difficult to maintain the arc with voltage less than 14V or more than 40V.
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What else can I help you with?
How does current flow during welding?
Think of electricity as water in a pipe. The larger the pipe the more water can flow thru. That is current = volume = amperage = amount of heat. Voltage can be compared to pressure in a pipe. That is drive/force. Most welding machines allow you to control the amperage but not the voltage.
What is the difference between no load current and no load voltage?
What does the question refer to? Induction motors? Transformers? For transformers, the no-load voltage is the voltage -- across the secondary or primary -- when there is no load attached to the secondary, that is, when there is no current in the secondary. No-load current really only makes sense when talking about a motor, because current is flowing in the device even when it's not under load. A rule of thumb is the no-load current is about a third to one half the full-load current.
Voltage current relation in passive circuit?
in passive circuit it depends on the type of load 1. if the load is purely resistive the voltage and current will be in phase 2.if the load is purely inductive the current lags the voltage by 90 dgree 3.if the load is purely capacitive the currents leads the voltage by 90 degree
What is the typical no-load open circuit voltage of a DC arc welding machine?
The typical no-load open circuit voltage of a DC arc welding machine generally ranges from 60 to 80 volts. This voltage is necessary to establish and maintain the arc between the electrode and the workpiece. The specific voltage can vary based on the machine design and application requirements, but it typically falls within this range for effective welding operations.
What is floating load in voltage to current converter?
This is when the load has no connection to the ground.
How do you calculate full load for 500amp welding machine?
You need the input voltage and maximum input current specs found on the name plate.
High voltage will trip a circuit breaker?
A higher voltage means that a higher current will flow in the same load. It is the current that causes the breaker to trip.
How does current flow during welding?
Think of electricity as water in a pipe. The larger the pipe the more water can flow thru. That is current = volume = amperage = amount of heat. Voltage can be compared to pressure in a pipe. That is drive/force. Most welding machines allow you to control the amperage but not the voltage.
Why the current is low when the voltage is high?
In principle it is possible to have any combination of voltage and current that you want, provided that you have the generating capacity to create it, however, it is also true that in some circumstances you get lower current with higher voltage, because you started with a moderate current at moderate voltage and put it through a step-up transformer to increase the voltage, which it does at the expense of the current.Additional CommentsIt's important to realise that the current supplied by a generator is determined by the load. The generator does not 'push out' current -the current is 'pulled out' by the load. With no load, the generator will supply voltage but there will be no current.A transformer is used to step up, or to step down voltage. Because the output (secondary) power is practically (but not quite) equal to the input (primary) power, one side of the transformer has a high voltage and a low current, while the other side has a low voltage with a high current -but, in both cases, the current is determined by the load, not the generator, nor the transformer.
What is the difference between no load current and no load voltage?
What does the question refer to? Induction motors? Transformers? For transformers, the no-load voltage is the voltage -- across the secondary or primary -- when there is no load attached to the secondary, that is, when there is no current in the secondary. No-load current really only makes sense when talking about a motor, because current is flowing in the device even when it's not under load. A rule of thumb is the no-load current is about a third to one half the full-load current.
How would high voltage effect the current in the wires?
The current is determined by the load. So if the conductors are designed to carry the resulting load current, then the high-voltage supply will have no effect. If not, then the conductors will overheat, their insulation will fail, and a short-circuit will result. However, the conductor's insulation must also be capable of withstanding the high voltage; if not, then the insulation will break down and a short circuit will result.
Why is electical power transmitted with high voltage?
For a given load, the higher the supply voltage, the lower the resulting load current. So, by transmitting electrical energy at very high voltages, the load current will be low enough to: (1) reduce line voltage drops to managable levels (2) allow the use of cables of practical sizes (3) minimise line losses
Voltage current relation in passive circuit?
in passive circuit it depends on the type of load 1. if the load is purely resistive the voltage and current will be in phase 2.if the load is purely inductive the current lags the voltage by 90 dgree 3.if the load is purely capacitive the currents leads the voltage by 90 degree
What do you understand by stabilizer explain its uses?
A Stabilizer maintains the voltage across a load constant no matter how high the current goes.It can be used to maintain the voltage across a load constant no matter the variation in supply voltage and also it can be used to maintain the supply voltage constant no matter the variation in load.
In a purely resistive ac circuit the current and voltage?
Voltage and current will be in phase for a purely resistive load. As a load becomes more inductive or capacitive, the phase angle between voltage and current will increase.
What is the typical no-load open circuit voltage of a DC arc welding machine?
The typical no-load open circuit voltage of a DC arc welding machine generally ranges from 60 to 80 volts. This voltage is necessary to establish and maintain the arc between the electrode and the workpiece. The specific voltage can vary based on the machine design and application requirements, but it typically falls within this range for effective welding operations.
What is line voltage and line current in star connection define?
In star the voltage from line to neutral is 1/sqrt(3) times the nominal voltage, while the load current equals the line current. In delta the voltage between lines is the nominal voltage, while the load current is 1/sqrt(3) times the line current (for a balanced load). So a delta load needs 3 times the resistance compared to a star load of the same power.
