Current limiting device definition
Currentlimiting devices must be applied within the currentlimiting range of the device. Installed in a circuit where the available fault current is at a much lower value than the currentlimiting range of the device, the currentlimiting device will not operate as quickly, permitting more arcing with more damage to the components in the circuit.device, shall be field marked on the enduse equipment. (New in 2008 NEC) For calculated applications, the engineer shall ensure that the downstream circuit breaker(s) that are part of the series combination remain passive during the interruption period of the lineside fully rated, currentlimiting device. current limiting device definition
NEC Article 100 Definition The highest current EQUIPMENT can withstand without extensive damage (fire or shock hazard). Also known as component protection May be based on a specific type of overcurrent device NEC 110. 10 Circuit Impedance, Short
Current limiting device definition free
. 11 Definition of currentlimiting overcurrent protective device A currentlimiting overcurrent protective device is a device that, when interrupting currents in its current limiting range, will reduce the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in the same circuit if the device
Need to understand the definition of a current limiting breaker. Resolution: A currentlimiting circuit breaker is one that has been certified by UL to limit the letthru I2t (I squared t) during a fault to not more than the I2t available during a halfcycle of prospective symmetrical shortcircuit current.
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In the control of electric motors, current limiting reactors can be used to restrict starting current or as part of a speed control system. A set of aircore reactors installed outdoors at a substation.
NEC 240. 2 offers the following definition of a currentlimiting device: CurrentLimiting Overcurrent Protective Device: A device that, when interrupting currents in its currentlimiting range, reduces the current flowing in the faulted circuit to a magnitude substantially less than that obtainable in
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