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FAQ within [ Protection Relays ]
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Because when an undervoltage is detected, b contact will be closed, if power supply (P1-P2) is lost, the contact is retained. More Details >>
- No：23735
- Release Date：2018/09/19 17:16
- Update：2018/09/20 14:58
- Category： Protection Relays - MELPRO-A Series , MUV
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It is required that the resistance is lower than 5 ohm for a go and return length using sealed cables. The high voltage receiving facility rule defines “The ... More Details >>
- No：23720
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
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It recovers without retaining. More Details >>
- No：23723
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
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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
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In steady state, it is 5.0 VA, and during operation, it is 6.0 VA. More Details >>
- No：23715
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
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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：23724
- Release Date：2018/09/19 17:16
- Update：2018/09/20 14:23
- Category： Protection Relays - MELPRO-A Series , MDG
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