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What is the difference between voltage restrained overcurrent protection and voltage controlled overcurrent protection?
Wiki User
∙ 15y ago
The voltage-restrained overcurrent relay adjusts the pickup setting and characteristic curve of the overcurrent function based on the system voltage. The relay is set pickup greater than overload, and sensitivity increases as the voltage drops. The voltage-controlled overcurrent relay uses an undervoltage element to supervise the operation of the overcurrent element. When the voltage drops below a predetermined level, the undervoltage element permits the operation of the time overcurrent units. Voltage-restrained overcurrent relays can provide faster backup protection than voltagecontrolled overcurrent relays, particularly in cases where the generator voltage does not drop significantly below rated voltage during fault conditions. If the generator voltage always drops below a given voltage level for all faults in which operation is required, the voltage-controlled overcurrent unit may be set to provide faster overall clearing speed
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoIts a type of protection for over current fault . This protection element need to use during more sensitivity requirement than normal over current i.e. Ex:Generator Protection. OC protection occurs through voltage sensing of rated voltage of Generator.
The voltage-restrained overcurrent relay adjusts the pickup setting and characteristic curve of the overcurrent function based on the system voltage. The relay is set pickup greater than overload, and sensitivity increases as the voltage drops.
Voltage-restrained overcurrent relays can provide faster backup protection particularly in cases where the generator voltage does not drop significantly below rated voltage during fault conditions.
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REF Protection how it will operate?
REF, or restricted earth fault protection is normally applied to transformers. The idea is to set a very sensitive overcurrent on the neutral of a Wye winding. For ground faults, current will flow up the neutral, triggering this overcurrent relay to operate very quickly. To prevent this relay from tripping for faults outside "the protected zone" (such as out on a line near the transformer), information is gathered from the high, low, and sometimes tertiary windings of the transformer to determine if the fault is inside the current transformers used to gather information for protecting the transformer (can be in the transformer bushings, but is often in the breakers that operate to protect the transformer) or outside them. If inside, the overcurrent is allowed to operate. If outside, the overcurrent is restrained from operating.
What is an antonym for unrestrained?
tamed controlled moderated bound confined restrained unfree inhibited reserved undemonstrative unemotional
What does the bible say about inordinately?
Dictionary= inordinate. Not ordered, irregular, disorderly; not controlled or restrained. The Bible tells us that these are sins. We are to be orderly, regular, controlled and restrained. When we are not we are going against the word of God and God Himself. We are rebels. The Christian is to possess and practice the "Fruit of the Spirit" ( Galatians 5:22-26)
What is a different word to use instead of Limited?
How about restricted, restrained, bounded, confined, throttled, controlled, held, contained, checked, curbed, moderated
What does it mean when a friend dreams of you in handcuffs?
Dreams are about the dreamer. In this dream, "you" symbolize some part of the dreamer's own personality that needs to be controlled or restrained. The dream is not about you in any way.
How would you use restrained in a sentence?
The dog was restrained by its leash.
What is an antonym for pandemic?
Some words meaning the opposite of pandemic (usually used to mean world wide spread of infectious disease) could be: checked, controlled, limited, restrained
What can you write restrained as a sentence?
Restrained is a past participle verb which means held back. Thus it can be used in the following possible sentences:I wanted to eat a second doughnut, but restrained myself.The drunk man had to be restrained because he was getting violent.When in a car, it is best to wear a seatbelt so you are restrained if the car crashes.
When is a plaintiff of an order of protection in violation of the order of protection?
Never. Only the restrained person can be in violation. The order of protection does not protect the restrained person.Another View: The above is not necessarily true in all instances. In some states the plaintiff may also be held in contempt of the order if the plaintiff uses the order as a 'weapon' to bully the respondant by either inventing circumstances or purposely placing themselves in situations where the respondant must flee or leave a location in order to avoid being found in violation of the "distance rule" or whatever restriction the plaintiff is trying to use to harass them.
How do you make a sentence with the word restrained?
The rescued fighting dog had to be restrained, when it was around other dogs.
What does restrained elegance refer too?
Restrained elegance seems to have something to do with bondage and BDSM. There is an adult website called "Restrained Elegance" which has pictures and videos of women in barefoot bondage.
Is restrained an adjective?
Yes, it can be, to mean either subdued (restrained laughter) or physically secured (a restrained prisoner). It is the past tense and past participle of the verb to restrain, so is otherwise a verb form.
