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

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

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

The contact recovers automatically.

It lights up with 85 V or more control power.

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

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

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

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

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

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
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 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
About contact

The contact recovers automatically. More Details >>
- No：23736
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MUV
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
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
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
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

21-30 of Total 36

Inquiries

page top