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Q.

What is a PHASE SEQUENCE RELAY ?

Tags: education, science, news & events
Asked by truth exposed, 27 Feb '13 06:45 pm
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Answers (6)

 
1.

Phase sequence relay is used for monitoring the clockwise rotation of movable motors for which the phase sequence is important, such as with pumps, saws, drilling machines. Benefits: Additional space in the control panel thanks to the narrow width Protection against damage by means of phase sequence monitoring
Answered by LIPSIKA, 27 Feb '13 07:27 pm

 
  
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2.

Relay which functions according to the order in which the phase voltages successively reach their maximum positive values. Also known as phase-sequence relay.
Answered by Ataur Rahman, 27 Feb '13 06:51 pm

 
  
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3.

Relay which functions according to the order in which the phase voltages successively reach their maximum positive values. Also known as phase-sequence relay.
Answered by iqbal seth, 27 Feb '13 07:17 pm

 
  
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4.

U
1
0
0
1
11
14
12
U -> W -> V
U ...more
Answered by anil garg, 27 Apr '13 12:22 pm

 
  
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5.

The EMR4-F500-2 phase sequence relay with its compact 22.5 mm width is used for monitoring the clockwise rotation of movable motors for which the phase sequence is important, such as with pumps, saws, drilling machines. Benefits: Additional space in the control panel thanks to the narrow width Protection against damage by means of phase sequence monitoring

A clockwise phase sequence causes the changeover contact to enable the control voltage for the motor switchgear. The EMR4-F500-2 covers the entire voltage range from 200 V AC to 500 V AC.
Answered by jameel ahmed, 27 Feb '13 09:46 pm

 
  
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6.

In electronics, technique for impressing information (voice, music, picture, or data) on a radio-frequency carrier wave by varying one or more characteristics of the wave in accordance with the intelligence signal. There are various forms of modulation, each designed to alter a particular characteristic of the carrier wave.The most commonly altered characteristics include amplitude, frequency, phase, pulse sequence, and pulse duration. Amplitude modulation In amplitude modulation (AM), auditory or visual information is impressed on a carrier wave by varying the amplitude of the carrier to match the fluctuations in the audio or video signal being transmitted. AM is the oldest method of broadcasting radio programs. Commercial AM stations operate at frequencies spaced 10 kHz apart between 535 and
1,605 kHz. Radio waves in this frequency range are effectively reflected back to the Earth's surface by the
ionosphere and can be detected by receivers hundreds of miles away. In additio ...more
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Answered by right sense, 27 Feb '13 06:59 pm

 
  
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