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

Input from the primary side by combining with a peripheral device (ZCT). In Standard JIS C 4601, performance warranty is

It operates on a root mean square value of a fundamental wave.

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

That is described as below. (1) By laying ZCTs for two feeders having different loads, detected by one earth fault dir

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

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

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

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

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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 ]

21-30 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
Test method

Input from the primary side by combining with a peripheral device (ZCT). In Standard JIS C 4601, performance warranty is covered for combination of periphera... More Details >>
- No：23728
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MGR
Detection of current

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
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

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
About contact

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

21-30 of Total 36

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