Set the display selection switch on the front upper right of the relay to “Time limit pass.” When a relay detects near t

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

It is possible. Connect R-phase to the terminal for R-phase of the relay, and T-phase to the terminal for T-phase of the

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

This relay has a capacitor to operate in case of the lost power or at the maximum settling of an operation time. Because

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 operates with a settled operation time.

Because the contact capacity is different to that of a contact for trip, it cannot be used for tripping. Refer to the ca

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Medium-voltage Power Distribution Products

Protection Relays(72)

Protection Relays - MELPRO-A Series(72)

FAQ within [ Medium-voltage Power Distribution Products ]

1-10 of Total 36

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Confirmation method of the start-up value

Set the display selection switch on the front upper right of the relay to “Time limit pass.” When a relay detects near the operation value, “0” will be displ... More Details >>
- No：23716
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
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
The application of the overcurrent relay

It is possible. Connect R-phase to the terminal for R-phase of the relay, and T-phase to the terminal for T-phase of the relay. And the direction of a curren... More Details >>
- No：23709
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
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
Contact recovery delay after applying voltage

This relay has a capacitor to operate in case of the lost power or at the maximum settling of an operation time. Because this capacitor needs a time to be ch... More Details >>
- No：23734
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MUV
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
Movement indicator

It operates. More Details >>
- No：23739
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , COMMON
Operating time of undervoltage detection

It operates with a settled operation time. More Details >>
- No：23731
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MUV
About contact

Because the contact capacity is different to that of a contact for trip, it cannot be used for tripping. Refer to the catalog for the contact capacity. More Details >>
- No：23737
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , COMMON

1-10 of Total 36

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