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

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

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

It lights up with 85 V or more control power.

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

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

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

In steady state, it is 5.0 VA, and during operation, it is 6.0 VA.

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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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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
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
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
A lighting condition of the RUN LED

It lights up with 85 V or more control power. More Details >>
- No：23721
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MDG
About contact

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

It operates. More Details >>
- No：23739
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , COMMON
Burden of MOC-A1 type

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

1-10 of Total 36

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