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FAQ within [ Protection Relays - MELPRO-A Series ]
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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
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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
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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
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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
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Because when an undervoltage is detected, b contact will be closed, if power supply (P1-P2) is lost, the contact is retained. More Details >>
- No:23735
- Release Date:2018/09/19 17:16
- Update:2018/09/20 14:58
- Category: Protection Relays - MELPRO-A Series , MUV
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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
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Direction of the current in the incident detection
It is possible. More Details >>
- No:23712
- Release Date:2018/09/19 17:16
- Category: Protection Relays - MELPRO-A Series , MOC
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The prohibition position sets the maximum settling value. With the definite time current, all prohibition positions set 6 A, and with the instantaneous curre... More Details >>
- No:23714
- Release Date:2018/09/19 17:16
- Category: Protection Relays - MELPRO-A Series , MOC
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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
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Combination with other companies' peripheral devices
It is impossible. In Standard JIS C 4609, warranty is covered for combination of peripheral devices and relays. Therefore, combination with other companies’ ... More Details >>
- No:23718
- Release Date:2018/09/19 17:16
- Category: Protection Relays - MELPRO-A Series , MDG
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