Topic: Directional Overcurrent Relay
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Answers to Common Questions
How do you test a directional overcurrent relay?
Using a test set. The manual gives step by step procedures for this. Read More »
Source: http://wiki.answers.com/Q/How_do_you_test_a_directional_overcurre...
What is the theory behind a definite time overcurrent relay?
A definite time overcurrent relay operates like an instantaneous overcurrent relay coupled with a timer. once current reaches the pickup value, the relay overcurrent relay will trip, which initiates the timing circuit. as long as current st... Read More »
Source: http://wiki.answers.com/Q/What_is_the_theory_behind_a_definite_ti...
Why Normal time-overcurrent relays are not adequate for generator...
Setting the time-overcurrent relays high enough to prevent tripping for normal overloads may result in them not tripping at all due to the decaying characteristic of the generator fault current. Using the system voltage to control the overc... Read More »
Source: http://wiki.answers.com/Q/Why_Normal_time-overcurrent_relays_are_...
More Common Questions
Answers to Other Common Questions
If you are talking about electromechanical overcurrent/voltage relays, reference the manual for that particular relay. an exampel of an overcurrent would be a CO-7, 8, or 9. These have settings of pickup, and time lever for a time overcurre...
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Source: http://wiki.answers.com/Q/How_diffferent_are_the_basic_circuit_di...
Directional relay is that relay which operate in the direction of the fault current. SAPTARSHI BHOWMICK
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Source: http://wiki.answers.com/Q/What_is_the_directional_over_current_re...
Directional relay opeartes +/- 90degree of MTA (maxumum torque angle). Relay is set either forward or reverse depending on the direction of current flow. 180 degree to MTA is always restraint region. Some relay has chareteristic of +/- 85 d...
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Source: http://wiki.answers.com/Q/What_are_the_directional_characteristic...
Directionalized relays are relays that use a polarizing circuit to determine which "direction" (in the zone of protection, or out of the zone protection) a fault is. There are many different types and different polarizing methods - ground p...
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Source: http://wiki.answers.com/Q/What_is_directional_protection_relay_an...
it's located under the dash mid way left of the ash tray area
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Source: http://wiki.answers.com/Q/Where_is_the_directional_relay_on_1997_...
( də′rek·shən·əl ′rē′lā ) (electricity) Relay which functions in conformance with the direction of power, voltage, current, pulse, rotation, and so on.
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Source: http://www.answers.com/topic/directional-relay
You see the way a relay operates really is just simple physics. These physics are operated with the use of "Flux Capacitors". Flux capacitors are used in nearly every single circuit and have potential to break the space time continuim. The ...
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Source: http://wiki.answers.com/Q/How_three_phase_directional_relay_opera...
