Set the frequency to meet the frequency of the region. Incorrect frequency prevents correct detection.

This relay uses the input voltage at the VT secondary side (P1-P2) as the relay control power source. When a rated volta

It means multiples of the settling value. For example, when a definite time factor operation settling value of a relay i

That is described as below. (1) By laying ZCTs for two feeders having different loads, detected by one earth fault dir

It operates on a root mean square value of a fundamental wave.

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Protection Relays

Protection Relays - MELPRO-A Series(72)

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FAQ within [ Protection Relays ]

31-36 of Total 36

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Movement indicator

Set the frequency to meet the frequency of the region. Incorrect frequency prevents correct detection. More Details >>
- No：23740
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , COMMON
Movement of contact

This relay uses the input voltage at the VT secondary side (P1-P2) as the relay control power source. When a rated voltage is input, b contact side of the co... More Details >>
- No：23733
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MUV
Rated current

In CT circuit, it is 5 A. More Details >>
- No：23713
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
The viewpoint of the definite time factor characteristic graph

It means multiples of the settling value. For example, when a definite time factor operation settling value of a relay is 3 A, 1x is read as 3 A and 5x is re... More Details >>
- No：23705
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
Combination transformer

That is described as below. (1) By laying ZCTs for two feeders having different loads, detected by one earth fault directional relay. In this case, it i... More Details >>
- No：23726
- Release Date：2018/09/19 17:16
- Update：2018/09/20 13:26
- Category： Protection Relays - MELPRO-A Series , MGR
Detection of current

It operates on a root mean square value of a fundamental wave. More Details >>
- No：23710
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC

31-36 of Total 36

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