Контактор,автоматический выключатель,солнечный инвертор,электрический счетчик,солнечные батареи
EOCRSSD-30DF7 is a digital motor protector производства Schneider Electric (formerly Samwha, Южная Корея) 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.
- Model Code Definition
| Сегмент кода | Описание |
| 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 (прямое соединение, no external CT required) |
| Д | Цифровой дисплей, equipped with digital tube to display real-time 3-phase average current and fault status |
| F7 | Control power specification: 110VAC±15% (50/60Гц); other options: М7(220ВАК), Б(24В переменного/постоянного тока) |
- Main Technical Specifications
| Категория | Параметры | Примечания |
| Basic Info | ||
| Бренд | Шнайдер Электрик (Former Samwha Korea) | Produced in Iksan, Korea; Authorized agent in China: Shanghai Hanshi Electric |
| Тип продукта | Digital Overcurrent Relay / Защита двигателя | Higher precision (±5%) than traditional thermal relay |
| Электрические параметры | ||
| Номинальное рабочее напряжение | 600В и (UL) / 690В и (CSA, МЭК 60947-4-1) | Suitable for low-voltage motor circuits |
| Номинальное импульсное выдерживаемое напряжение | 6кВ | Соответствует МЭК 60947-4-1 |
| Контрольная мощность | 110VAC±15%, 50/60Гц | Matched with F7 code |
| Потребляемая мощность | ≤3W | Low power consumption for long-term operation |
| Protection Parameters | ||
| Adjustable Current Range | 3~30A continuously adjustable | Adjustment ratio: 10:1 |
| Функции защиты | 1. Перегрузка по току (O-Time: 0.5~10s adjustable) | Independent adjustable start delay D-Time |
| 2. Phase loss (fast protection within 3s) | ||
| 3. Locked rotor (combined D-Time+O-Time protection) | ||
| Режим сброса | Руководство / Электрический (необязательный) | Reset required after fault for restart |
| Выход & Отображать | ||
| Output Contact | 1 Северная Каролина + 1 НЕТ (2-SPST) | Рейтинг контактов: 3A/250VAC |
| Режим отображения | Digital tube display | Real-time 3-phase average current, flashing fault code indication |
| Физический & Относящийся к окружающей среде | ||
| Измерение | 45×75×110mm, standard DIN rail mounting | Compact size saves cabinet space |
| Protection Grade | IP20 (передняя панель) | Suitable for installation inside control cabinets |
| Рабочая температура | -20℃ ~ +60℃ | Adaptable to industrial temperature variation |
| Температура хранения | -40℃ ~ +85℃ | Meet transportation and storage requirements |
| Сертификация | ||
| Международные сертификаты | CE, UL, CSA | Соответствует МЭК 60947-4-1, global applicable |
| Соблюдение требований в области авиаперевозок | Нет встроенной литиевой батареи, conform to UN38.3 | Shippable as general cargo without special packaging |
- Cross-brand Comparison
| Модель | Текущий диапазон | Контрольная мощность | Отображать | Защита | Ценовой диапазон | Приложение |
| Schneider EOCRSSD-30DF7 | 3~30A | 110ВАК | Digital display | Перегрузка / Phase loss / Locked rotor | 350~450CNY | 3-phase low-power motors with fault diagnosis demand |
| ABB CM-MSS.31P | 3~30A | 24~240VAC/DC | Indicator light | Перегрузка / Phase loss / Locked rotor | 400~500CNY | General industrial motors, unified brand matching |
| Siemens 3RB2026-1SB0 | 2.5~32A | 24~240VAC/DC | Indicator light | Перегрузка / Phase loss | 300~400CNY | Supporting Siemens PLC, базовая защита |
| Omron K8DS-PH1 | 3~30A | 100~240VAC | Digital display | Перегрузка / Phase loss / Locked rotor | 380~480CNY | Автоматизированные производственные линии, high-precision protection |
| Chint NR2-32 | 2.5~32A | No control power | No display | Перегрузка / Phase loss | 50~80CNY | Economy application, low precision requirement |
Ключевые моменты выбора
- 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
- Full Series Model List
EOCR-SSD Series Classification
| Текущий диапазон | Base Model | Power Options | Complete Model Examples |
| 0.5~6A | EOCRSSD-05С | С:24~240VAC/DC | EOCRSSD-05DF7, EOCRSSD-05DM7, EOCRSSD-05DB |
| F7:110ВАК | |||
| М7:220ВАК | |||
| Вт:380~440VAC | |||
| 3~30A | EOCRSSD-30S | То же, что и выше | EOCRSSD-30DF7, EOCRSSD-30DM7, EOCRSSD-30DW |
| 5~60A | EOCRSSD-60S | То же, что и выше | EOCRSSD-60DF7, EOCRSSD-60DM7, EOCRSSD-60DS |
Код заказа & Аксессуары
Standard order number: EOCRSSD-30DF7
Монтажный кронштейн: EOCR-MNT-01 (DIN rail type)
Extension cable: EOCR-CAB-05 (5м) / EOCR-CAB-10 (10м)
Test kit: EOCR-TEST-KIT (including analog load & calibrator)
- Распространенные неисправности & Maintenance Solutions
| Явление неисправности | Возможные причины | Troubleshooting Steps | Решения | Preventive Measures |
| No digital display | 1. Control power disconnected | 1. Measure terminal voltage | 1. Connect 110VAC correctly | Check power spec before installation |
| 2. Wrong wiring polarity | 2. Проверьте проводку | 2. Adjust connection (AC non-polar) | ||
| 3. Internal fuse blown | 3. Inspect internal fuse | 3. Replace 0.5A fuse | ||
| Ложное срабатывание | 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. Install power filter | ||
| 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 |
Цикл технического обслуживания
- Daily inspection: Check display status and alarm indicator
- Monthly maintenance: Dust cleaning, tighten wiring terminals
- Quarterly calibration: Verify protection parameter accuracy
- Annual overhaul: Inspect internal components, replace aging parts
- Сценарии применения & Cases
Применимые сценарии
Промышленная автоматизация: CNC machine tools, конвейеры, печатное оборудование
Water treatment: Водяные насосы, fans with frequent startup and variable load
ОВК: Воздушные компрессоры, вентиляторы градирни
Building materials industry: Миксеры, heavy-duty conveyors
Power system: Standby generators, небольшая защита трансформатора
Non-recommended Scenarios
High voltage motors (>690В): Adopt dedicated high-voltage protectors
Explosion-proof environment: Extra explosion-proof housing required with higher cost
Ultra-low current (<0.5А): Choose EOCRSSD-05S or match external CT
Typical Cases
Случай 1: Water Pump Motor Protection in Steel Plant
Проблема: Frequent false tripping of old thermal relays causing unplanned shutdowns without fault identification
Решение: Install EOCRSSD-30DF7, set current 15A (motor rated 13.5A), start delay 5s
Effect: False shutdown rate reduced by 62%, fault diagnosis time shortened from 2h to 5min, annual maintenance cost saved about 80,000 китайский юань
Случай 2: Mixer System in Pharmaceutical Factory
Проблема: Motor burnout caused by mixer locked rotor leading to heavy losses
Решение: Adopt EOCRSSD-30DF7, set locked rotor protection (D-Time=3s, O-Time=1s)
Effect: Power cut within 3s once locked rotor occurs, 100% motor intact rate, avoid production stop losses
- Правила выбора
Quick Selection Rules
- 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 второй
- Источник питания: 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
- Соблюдение требований в области авиаперевозок & Сертификаты
- 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 directives
UL: Meet US safety standards for North America market
CSA: Certified for Canadian market
МЭК: Conform to international electrical standards for global use
