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 is impossible. It is required to combine with MZT type ZCT dedicated for our products.

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

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

Because between memories, a value becomes unstable, reset the position to the correct position.

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

It is impossible. Because the type is to detect by ZCT in an ungrounded system, the sensitivity becomes very high.

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

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FAQ > Medium-voltage Power Distribution Products > Protection Relays > Protection Relays - MELPRO-A Series

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Protection Relays - MELPRO-A Series

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FAQ within [ Protection Relays - MELPRO-A Series ]

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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
Combination transformer

It is impossible. It is required to combine with MZT type ZCT dedicated for our products. More Details >>
- No：23729
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MGR
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
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
Position of switch

Because between memories, a value becomes unstable, reset the position to the correct position. More Details >>
- No：23738
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , COMMON
Direction of the current in the incident detection

It is possible. More Details >>
- No：23712
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
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
Scope of Application

It is impossible. Because the type is to detect by ZCT in an ungrounded system, the sensitivity becomes very high. More Details >>
- No：23727
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MGR
Movement indicator

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

21-30 of Total 36

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