Inrush Current Information

Example for an Inverter Generator »Panda 5000i«

The inrush current is not an indication for starting electrical devices. We specify 100 A for small inverters. This current is permitted when e. g. electronic chargers are switched on. Most electronic devices have capacitors built in that draw a very high current when switched on. This current is limited to approximately 100 A.

It looks very different with electric motors. In principle, the internal combustion engine can never deliver more energy than it is available for it. If an electric motor has a starting current of 75 A, this only works because the motor has a low CosPhi when starting and the required mechanical power is lower than it would be with a CosPhi of 1.

It cannot be said broadly whether a generator starts something or not. It depends largely on the consumer and not on the generator.
For electronic consumers we have an inrush current of 100 A.

Example for an air conditioner

An air conditioning system has a starting current of 50A:

  • 230 V * 50 A = 11.500 W

In theory, the Panda 5000i would not be able to start the air conditioning, but since asynchronous motors have a low CosPhi when starting, it still works.

Let’s assume that the engine has a CosPhi of 0.35 when starting:

  • 230 V * 50 A = 11500 VA * 0.35 = 4025 W

The inverter has to carry the 50 A but it can do 100 A ► OK.
The internal combustion engine has a power of 4400 W ► OK.

Now the same with a CosPhi of 0.5:

  • 230 V * 50 A = 11500 VA * 0.5 = 5750 W

The inverter is still OK since the current is 50 A and the maximum current is 100 A.
The internal combustion engine has only 4400 W available but 5750 W are required.
This application will most likely not work.

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