It is required that the resistance is lower than 5 ohm for a go and return length using sealed cables. Other than MPD-3

It is required that the resistance is lower than 5 ohm for a go and return length using sealed cables. The high voltage

Up to 5 units. To connect 6 or more units, use Vo extended terminals (M-N) of a relay connected from MPD-3 type. From th

It means multiples of the settling value. For example, when an instantaneous factor operation settling value of a relay

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

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

Because when an undervoltage is detected, b contact will be closed, if power supply (P1-P2) is lost, the contact is reta

Because this relay derives the control power from input of the CT secondary current, when the input current falls below

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Protection Relays

Protection Relays - MELPRO-A Series(72)

MOC(13)
MGR(5)
MDG(8)
MUV(6)
COMMON(4)

FAQ within [ Protection Relays ]

1-10 of Total 36

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Combination transformer

It is required that the resistance is lower than 5 ohm for a go and return length using sealed cables. Other than MPD-3 type ZVT, it is similar to the distan... More Details >>
- No：23719
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
Combination transformer

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
Combination transformer

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：23730
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MGR
Combination transformer

Up to 5 units. To connect 6 or more units, use Vo extended terminals (M-N) of a relay connected from MPD-3 type. From this Vo extended terminals, additional ... More Details >>
- No：23725
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
The viewpoint of the instantaneous factor operating characteristics graph

It means multiples of the settling value. For example, when an instantaneous factor operation settling value of a relay is 30 A, 100% is read as 30 A. More Details >>
- No：23707
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
About contact

That is right. More Details >>
- No：23722
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
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
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
About contact

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
A lighting condition of RUN

Because this relay derives the control power from input of the CT secondary current, when the input current falls below about 0.5 A for 2-phase input or abou... More Details >>
- No：23708
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC

1-10 of Total 36

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