| Part Name | OCEF Three Phase – Over Current and Earth Fault Relay |
| Model | D2K-OG50 |
| Standard code | IEC 255 . KEMC 1120 . and KEPCO |
| Element | Overcurrent (50/51) 3Phase . Earth Fault (50N/51N) |
| Aux. power | AC 110 / 120V and DC 100 / 125V ±30%, 9W(Non oper) 16W (Oper) |
| Rating | AC 5A, 50 / 60㎐ |
| | Burden OC / EF 0.3VA |
| Setting range | OC | Overcurrent : 0.2~15A (0.1A step) Instantaneous : 5~80A (1A step) Time lever : 0.1~15 (0.1 step) | Inst Time | 40ms이하 |
| EF | Overcurrent : 0.2~15A (0.1A step) Instantaneous : 5~80A (1A step) Time lever : 0.1~15 (0.1 step) |
| Time curve | 장강반한시(LT-VI), 반한시(H-IN), 강반한시(V-IN), 초반한시(E-IN) IEC std. 반한시
(NIES), 강반한시(VIES), KEPCO std.. |
| Resetting value | Set of > 95% |
| Reset time | 50㎳ ±25㎳ |
| Degree protection | IP52 |
| Short current | 80 In |
| Communication | RS232 (Front view), RS485 (Reare view) |
| Key – pad | Mode, ESC, Enter, Direction Key (←,↑,→,↓) |
| Indicator | RUN (Green) : C.P.U Error 동작상태 감시 및 전원감시 COMM (Yellow) : 깜박일 때 신호 출력 중 PICK-UP (Red) : Pick-up 과부하 동작시 점등 ERR (Red) : 내부회로 및 소자
불량시 점등 R.S.T.N :동작상표시INST :단락상태 표시등 |
| Fault Memory | 10회 Memory 가능 및 사고선로별 회로표시 (선입선출방법, “1"이 최근 사고를 뜻함) Memory event recording time 1.2sec |
| Reset | Auto Reset, Indicator (Manual Reset) |
| Temperature | Operating temperature -10 ~ 60℃ Storage temperature -20 ~ 70℃ |
| Mounting | Flush mounted type |
| Contact capacity | Make AC 250V 15A 0.5sec (L/R-0), DC 125V 30A 0.5sec Break AC 250V 3A 0.5sec (L/R-0), DC 125V 5A 0.5sec |
| Output contact | Main trip 2a CPU Error : SCADA 1a, alarm 1a OC 과부하 : SCADA 1a, alarm 1a OC
단락 : SCADA 1a, alarm 1a EF 과부하 : SCADA 1a, alarm 1a EF 단락 : SCADA 1a,
alarm 1a |
| Life time | 기계적 수명:10 × 106 전기적 수명:5 × 105 |
| Withstａnd voltage | 2kV for 1minute between all terminal |
| Lightning impulse withstａnd voltage | 1.2㎲/50㎲ 5㎸ Positive/Negative electrodes, 3times |
| Surge transient | 2.5㎸ / 1㎒ (IEC255-4) |
| Electrostatic | 5W transceiver 150㎒-400㎒ / 0.3m (IEC 1000-4-3 c1.2) |
| Transient Bust immunity | Aux. power, contacts, current-4㎸ (IEC 255-22-4) |
| Electrostatic discharge | 8㎸ in air, 6㎸ by contacting |
| Vibration | Vibration frequency : 16.7㎐ Double amplitude : 0.4㎜ Direction : horizontal, vertical, transverse |
| Shock | Shock acceleration : 50G Shock application direction : horizontal, vertical, transverse Shock times : 3 times |
