Circuit arrangement for suppressing an arc occurring over a contact gap of a switching member
AssigneeSMA Solar Technology AG
InventorsChristopher Merz, Markus Hopf
Life of this patent
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Abstract
The disclosure relates to a circuit arrangement for suppressing an arc occurring during a switching process, wherein a current bypass path comprises a PTC resistor connected in series with a fuse. The current bypass path is provided in parallel with a switch. The disclosure also relates to a photovoltaic power plant with a photovoltaic generator which is connected to an inverter via DC lines. In this arrangement, such a circuit arrangement is arranged in at least one of the DC lines.
Claims19
A circuit arrangement for suppressing an arc occurring during a switching process, comprising:
- a current bypass path comprising a positive temperature coefficient (PTC) resistor and a fuse connected together in series;
- a switch connected in parallel with the current bypass path;
- and
- a circuit unit configured to limit a voltage drop across the fuse when the fuse has tripped, wherein the circuit unit is arranged in parallel with the fuse.
A photovoltaic power plant having a photovoltaic generator, comprising:
- an inverter comprising two input DC lines configured to couple to the photovoltaic generator;
- and
- a circuit arrangement arranged in at least one of the DC lines, the circuit arrangement comprising:
- a current bypass path comprising a positive temperature coefficient (PTC) resistor and a fuse connected together in series;
- a switch connected in parallel with the current bypass path;
- and
- a circuit unit configured to limit a voltage drop across the fuse when the fuse has tripped, wherein the circuit unit is arranged in parallel with the fuse.
Dependencies are inferred from the claim text.