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

A momentary power interruption is not detectable.

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

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

Overload tolerance of an over current relay is 200 A, 1 second. Adjust CT ratio and others not to input more than 200 A.

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

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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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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
Detection of undervoltage

A momentary power interruption is not detectable. More Details >>
- No：23732
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MUV
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
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
Short-circuit detection

Overload tolerance of an over current relay is 200 A, 1 second. Adjust CT ratio and others not to input more than 200 A. More Details >>
- No：23711
- Release Date：2018/09/19 17:16
- Category： Protection Relays - MELPRO-A Series , MOC
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

31-36 of Total 36

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