Devices for overvoltage, overcurrent and arc flash protection
AssigneeRipd IP Development Ltd
InventorsZafiris G. Politis, Grigoris Kostakis, Thomas Tsovilis, Kostas Bakatsias
Life of this patent
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Abstract
A crowbar module includes first and second electrical terminals, a module housing, and first and second crowbar units. The first crowbar unit is disposed in the module housing and includes a first thyristor electrically connected between the first and second electrical terminals. The second crowbar unit is disposed in the module housing and includes a second thyristor electrically connected between the first and second electrical terminals in electrical parallel with the first crowbar unit.
Claims22
1-21. (canceled)
A surge protection system comprising:
- a crowbar device that is coupled to and between a plurality of phase lines and is configured to prevent an overvoltage condition by selectively generating a low resistance current path between the plurality of phase lines;
- and
- a plurality of surge protection devices that are connected to respective ones of the plurality of phase lines and to the crowbar device and that are configured to protect the equipment during an overvoltage condition by conducting a limited amount of current that corresponds to the overvoltage condition.
27-71. (canceled)
A crowbar system comprising:
- a crowbar module including:
- a module housing;
- a thyristor disposed in the module housing;
- a coil disposed in the module housing;
- a trigger circuit disposed in the module housing;
- and
- a snubber circuit disposed in the module housing;
- and
- an external trigger and alarm interface circuit electrically connected to the crowbar module.
Dependencies are inferred from the claim text.