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Medium-voltage Power Distribution Products
FAQ within [ Medium-voltage Power Distribution Products ]
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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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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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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
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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 contact recovers automatically. More Details >>
- No:23717
- 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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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
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