Care must be taken to ensure that the relay does not operate from the spill current resulting from unequal CT saturation during motor starting, where the high currents involved will almost certainly saturate the motor CT's. It is common to use a stabilising resistor in series with the relay. The effect of the stabilising resistor is to increase the effective setting of the relay under these conditions, and hence delay tripping. When a stabilising resistor is used, the tripping characteristic should normally be instantaneous. An alternative technique, avoiding the use of a stabilising resistor is to use a definite time delay characteristic. The time delay used will normally have to be found by trial and error, as it must be long enough to prevent maloperation during a motor start, but short enough to provide effective protection in case of a fault.
Requirement of REF protection for 50KVA 11KV/.4KV transforemr
A cement resistor is typically used as a power resistor (a resistor whose power rating is greater than 1 W).
The first 3 band on a resistor indicate the value of that resistor.
A voltmeter can be connected in parallel with a resistor to show the voltage across the resistor.
A series dropping resistor is a resistor that limits the amount of current flow in a circuit.
To determine the value of Stabilizing resistor Rs = Vs/Is = If(Rct +2Rl)/Is Where, Rs = resistance value of the stabilizing resistor Vs = voltage at which the relay will operate Is = current flowing through the stabilizing resitor and the relay If = maximum secondary fault current magnitude Rct = internal resistance of the current transformer Rl = resistance of attached wire leads
Requirement of REF protection for 50KVA 11KV/.4KV transforemr
what does the term stabilizing fin mean
Stabilizing selection
When natural selection favors the intermediate version of a characteristic, it is referred to as stabilizing selection. It is the opposite of disruptive selection.
A good alternative to the Gorillapod for stabilizing a camera is a traditional tripod.
yes, a variable resistor
Examples of hydrogen peroxide stabilizing agents are acetanilide, organphosphonates, phenol, etc.
A stabilizing ball is more used for pilates. Yoga only has minimal equipment.
Otis F. Boykin invented the wire precision resistor and the electrical resistor.
A non-ohmic resistor doesn't have a constant resistance. A ohmic resistor has a constant resistance.
Resistor value is defined by the Resistance the resistor offers in Kilo ohms/ohms value given by color codes on the resistor.