접촉기,회로 차단기,태양광 인버터,전기 계량기,태양 전지
EOCRSSD-30DF7 is a digital motor protector 슈나이더 일렉트릭에서 제조한 (formerly Samwha, 대한민국) with current range 3-30A and 110VAC control power supply. It provides triple protection against overload, phase loss and locked rotor. It is applicable for precise protection of three-phase low-power motors, capable of replacing traditional thermal relays to improve protection accuracy and fault diagnosis efficiency.
- 모델 코드 정의
| 코드 세그먼트 | 설명 |
| EOCR | Electronic Over Current Relay, core product positioning |
| SSD | Solid State Digital, adopting solid-state electronic components and digital control technology |
| 30 | Current protection range: 3~30A (직접 연결, no external CT required) |
| 디 | Digital Display, equipped with digital tube to display real-time 3-phase average current and fault status |
| F7 | Control power specification: 110VAC±15% (50/60헤르츠); other options: M7(220VAC), 비(24VAC/DC) |
- Main Technical Specifications
| 범주 | 매개변수 | 비고 |
| 기본 정보 | ||
| 상표 | 슈나이더 일렉트릭 (Former Samwha Korea) | Produced in Iksan, Korea; Authorized agent in China: Shanghai Hanshi Electric |
| 제품 유형 | Digital Overcurrent Relay / 모터 보호 장치 | Higher precision (±5%) than traditional thermal relay |
| 전기적 매개변수 | ||
| 정격 작동 전압 | 600뷔와 (UL) / 690뷔와 (CSA, IEC 60947-4-1) | Suitable for low-voltage motor circuits |
| 정격 임펄스 내전압 | 6kV | IEC를 준수 60947-4-1 |
| 제어 전원 | 110VAC±15%, 50/60헤르츠 | Matched with F7 code |
| 전력 소비 | ≤3W | Low power consumption for long-term operation |
| 보호 매개변수 | ||
| Adjustable Current Range | 3~30A continuously adjustable | Adjustment ratio: 10:1 |
| 보호 기능 | 1. 과전류 (O-Time: 0.5~10s adjustable) | Independent adjustable start delay D-Time |
| 2. 위상 손실 (fast protection within 3s) | ||
| 3. Locked rotor (combined D-Time+O-Time protection) | ||
| 재설정 모드 | 수동 / 전기 같은 (선택 과목) | Reset required after fault for restart |
| 산출 & 표시하다 | ||
| 출력접점 | 1 NC + 1 아니요 (2-SPST) | 접점등급: 3A/250VAC |
| 디스플레이 모드 | Digital tube display | Real-time 3-phase average current, flashing fault code indication |
| 물리적 & 환경 | ||
| 차원 | 45×75×110mm, standard DIN rail mounting | Compact size saves cabinet space |
| 보호 등급 | IP20 (전면 패널) | 제어 캐비닛 내부 설치에 적합 |
| 작동 온도 | -20℃ ~ +60℃ | Adaptable to industrial temperature variation |
| 보관 온도 | -40℃ ~ +85℃ | Meet transportation and storage requirements |
| 인증 | ||
| 국제 인증 | CE, UL, CSA | IEC를 준수 60947-4-1, global applicable |
| 항공 화물 규정 준수 | No built-in lithium battery, conform to UN38.3 | Shippable as general cargo without special packaging |
- Cross-brand Comparison
| 모델 | 현재 범위 | 제어 전원 | 표시하다 | 보호 | 가격대 | 애플리케이션 |
| Schneider EOCRSSD-30DF7 | 3~30A | 110VAC | 디지털 디스플레이 | 초과 적재 / 위상 손실 / Locked rotor | 350~450CNY | 3-phase low-power motors with fault diagnosis demand |
| ABB CM-MSS.31P | 3~30A | 24~240VAC/DC | Indicator light | 초과 적재 / 위상 손실 / Locked rotor | 400~500CNY | 일반 산업용 모터, unified brand matching |
| Siemens 3RB2026-1SB0 | 2.5~32A | 24~240VAC/DC | Indicator light | 초과 적재 / 위상 손실 | 300~400CNY | Supporting Siemens PLC, 기본 보호 |
| Omron K8DS-PH1 | 3~30A | 100~240VAC | 디지털 디스플레이 | 초과 적재 / 위상 손실 / Locked rotor | 380~480CNY | 자동화된 생산 라인, high-precision protection |
| Chint NR2-32 | 2.5~32A | No control power | No display | 초과 적재 / 위상 손실 | 50~80CNY | Economy application, low precision requirement |
선택 포인트
- Display function: EOCRSSD-30DF7 supports real-time current monitoring and fault diagnosis, superior to indicator-light-only models
- Protection accuracy: Electronic protector (±5%) far exceeds thermal relay (±15%), extending motor service life
- Control power: 110VAC F7 version fits specific regional power grids, confirm on-site power supply first
- 전체 시리즈 모델 목록
EOCR-SSD Series Classification
| 현재 범위 | 기본 모델 | Power Options | 완전한 모델 예 |
| 0.5~6A | EOCRSSD-05에스 | 에스:24~240VAC/DC | EOCRSSD-05DF7, EOCRSSD-05DM7, EOCRSSD-05DB |
| F7:110VAC | |||
| M7:220VAC | |||
| 여:380~440VAC | |||
| 3~30A | EOCRSSD-30S | 위와 동일 | EOCRSSD-30DF7, EOCRSSD-30DM7, EOCRSSD-30DW |
| 5~60A | EOCRSSD-60S | 위와 동일 | EOCRSSD-60DF7, EOCRSSD-60DM7, EOCRSSD-60DS |
주문 코드 & 부속품
표준 주문 번호: EOCRSSD-30DF7
장착 브래킷: EOCR-MNT-01 (DIN rail type)
Extension cable: EOCR-CAB-05 (5중) / EOCR-CAB-10 (10중)
Test kit: EOCR-TEST-KIT (including analog load & calibrator)
- 일반적인 결함 & Maintenance Solutions
| 결함 현상 | 가능한 원인 | 문제 해결 단계 | 솔루션 | Preventive Measures |
| 디지털 디스플레이 없음 | 1. Control power disconnected | 1. Measure terminal voltage | 1. Connect 110VAC correctly | Check power spec before installation |
| 2. Wrong wiring polarity | 2. 배선을 확인하세요 | 2. Adjust connection (AC non-polar) | ||
| 3. Internal fuse blown | 3. Inspect internal fuse | 3. Replace 0.5A fuse | ||
| False tripping | 1. Low current setting | 1. Confirm motor rated current | 1. Set current to 1.1 times rated value | Set parameters per motor nameplate |
| 2. Short start delay | 2. Extend D-Time | 2. D-Time = motor start time +1s | ||
| 3. Power harmonic interference | 3. Test power THD | 3. 전원 필터 설치 | ||
| Failure to trip | 1. Excessively high current setting | 1. Check current setting | 1. Set current to 0.9 times rated value | Regular contact inspection, avoid overload |
| 2. Damaged output contacts | 2. Test contact continuity | 2. Replace contact module | ||
| 3. Internal circuit failure | 3. Inspect internal components | 3. Contact after-sales service | ||
| Garbled display | 1. Voltage fluctuation | 1. Test power stability | 1. Install voltage stabilizer | Keep away from inverters, ensure good grounding |
| 2. Electromagnetic interference | 2. Check grounding | 2. Optimize grounding | ||
| 3. Program error | 3. Power cycle restart | 3. Restore factory settings |
유지보수 주기
- 일일점검: Check display status and alarm indicator
- Monthly maintenance: Dust cleaning, 배선 단자를 조이세요
- Quarterly calibration: Verify protection parameter accuracy
- 연간 점검: Inspect internal components, replace aging parts
- 응용 시나리오 & Cases
적용 가능한 시나리오
산업 자동화: CNC 공작기계, 컨베이어, 인쇄 장비
수처리: 워터 펌프, fans with frequent startup and variable load
공조: 공기 압축기, 냉각탑 팬
Building materials industry: 믹서, heavy-duty conveyors
Power system: Standby generators, small transformer protection
Non-recommended Scenarios
High voltage motors (>690다섯): Adopt dedicated high-voltage protectors
Explosion-proof environment: Extra explosion-proof housing required with higher cost
Ultra-low current (<0.5에이): Choose EOCRSSD-05S or match external CT
일반적인 경우
사례 1: Water Pump Motor Protection in Steel Plant
문제: Frequent false tripping of old thermal relays causing unplanned shutdowns without fault identification
해결책: Install EOCRSSD-30DF7, set current 15A (motor rated 13.5A), start delay 5s
효과: False shutdown rate reduced by 62%, fault diagnosis time shortened from 2h to 5min, annual maintenance cost saved about 80,000 위안화
사례 2: Mixer System in Pharmaceutical Factory
문제: Motor burnout caused by mixer locked rotor leading to heavy losses
해결책: Adopt EOCRSSD-30DF7, set locked rotor protection (D-Time=3s, O-Time=1s)
효과: Power cut within 3s once locked rotor occurs, 100% motor intact rate, avoid production stop losses
- 선택 규칙
빠른 선택 규칙
- Current matching: Set protection current within 0.9~1.1 times motor rated current
- Delay setting: Start delay (D-Time) = actual motor startup time + 1 두번째
- 전원공급장치: Prioritize matching on-site control power to avoid extra transformer cost
- Display demand: Choose D-type for fault diagnosis, non-D-type for basic protection only
- 항공 화물 규정 준수 & 인증
- Air Freight Regulation
No built-in lithium batteries or supercapacitors, fully compliant with UN38.3 air transport standards
Can be delivered as general goods, no MSDS or special shipping documents needed
Packaging suggestion: Anti-static bag + hard carton to prevent vibration damage
- Qualification Certificates
CE: Comply with EU LVD & EMC 지침
UL: Meet US safety standards for North America market
CSA: Certified for Canadian market
IEC: Conform to international electrical standards for global use
