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

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

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

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

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

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

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

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

FAQ

FAQAbout Products

Font Size
S
M
L

FAQ > Medium-voltage Power Distribution Products > Protection Relays

FAQ

Inquiries

Keyword Search

You can search two or more words separated by a space.

 AND : Put a space between the words in a keyphrase.
 OR  : Add a vertical bar ( | ) between the words in a keyphrase.
 NOT : Add a minus sign ( - ) followed by the words that you would like to exclude.

Result Type

Text Search

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

prev 3 / 4page next

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：23726
- Release Date：2018/09/19 17:16
- Update：2018/09/20 13:26
- Category： Protection Relays - MELPRO-A Series , MGR
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
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
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
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
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
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
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

21-30 of Total 36

Inquiries

page top