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Summary of Contents for DEEsys DFR-021D
- Page 1 Phase Fail Relay DFR - 021D [47I] DEESYS CO., LTD. Rev. 1 (2020. 11. 20)
- Page 2 DFR - 021D ■ Description - DFR-021D is a single open-phase detector that detects and alarms the open phase or load unbalance based on the current in normal operating state on a three-phase circuit. - It uses MCT-A31 as the input converter to monitor and detect three phase load current.
- Page 3 PHASE FAIL RELAY DFR - 021D ■ Display Screen Supply the power and you will see the blinking “RUN" sing, and it shows following two screens alternately every two seconds. - Shows the average value of the 3 phase input current: 2 - Shows the current unbalance rate (%): 2 seconds seconds...
- Page 4 3. Start-Lock Time Setting : Press the ‘▽’ key in the Unbalance Rate Setting to enter into the Start-Lock Setting Screen. Then, the ‘SET’ indicator will blink. : The ‘TIME’ and the ‘PICKUP’ will be on. Press the ‘SET’ key to change the set value. ‘M’...
- Page 5 PHASE FAIL RELAY DFR - 021D 4. Alarm Operation Time Setting : Press the ‘▽’ key in the Start-Lock Setting to enter into the Operation Time Setting Screen. Then, the ‘SET’ indicator will blink. : The ‘TIME’ and the ‘TRIP’ will be on. Press the ‘SET’ key to change the set value. ‘M’...
- Page 6 7. Output Pulse Setting : Press the ‘▽’ key in the Reset Setting to enter into the Output Pulse Setting Screen. Then, the ‘SET’ indicator will blink. : The ‘TIME’ indicator will blink and Pulse and Latch will be shown. Press ‘SET’ key to change the set value. ‘M’...
- Page 7 PHASE FAIL RELAY DFR - 021D 8. Pulse Retention Time Setting : Press the ‘▽’ key in the Output Pulse Setting to enter into the Pulse Retention Time Setting Screen. Then, the ‘SET’ indicator will blink. : The ‘TIME’ will be on. Press the ‘SET’ key to change the set value. ‘M’...
- Page 8 PHASE FAIL RELAY DFR - 021D ■ Alarm Display 1. In case of Unbalance after the Start-Lock Count, start the count for the time set in the Alarm Operation Time Setting of the Set Menu. : The ‘TRIP’ indicator will be on and count from 1 to 9 at x0.1 scale. ☆...
- Page 9 PHASE FAIL RELAY DFR - 021D ■ Dimension 1. DFR-021D 2. MCT-A31...
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