Schneider LC1G475KUEC 3-полюсный контактор

3‑pole contactor from domestic TeSys Giga series, AC‑3 475A/440V, coil 100–250V AC/DC wide voltage, стандартные вспомогательные контакты 1НО+1НЗ. Suitable for high‑power motor control and power switching. Supports contact wear diagnosis and can be used with LR9G series thermal relays.

1 Основные параметры & Naming Explanation

2 Key Performance Data

3 Приложения & Функции

Приложения

Прямой запуск, forward/reverse control, star‑delta starting of high‑power three‑phase asynchronous motors

Industrial power switching and distribution system control

Inductive load control with power factor ≥ 0.95

Heavy‑duty industries: building electrical, металлургия, химический, добыча полезных ископаемых, и т. д..

Ключевые особенности

1. Высокая производительность: Up to 620A at AC‑3, 1050A at AC‑1 for heavy‑duty applications
2. Smart diagnosis: Built‑in contact wear detection for predictive maintenance
3. Wide‑voltage coil: 100–250V AC/DC reduces spare parts inventory
4. Модульная конструкция: Supports various accessories (aux contacts, mechanical interlock, ограничитель перенапряжения, и т. д.)
5. Safe & надежный: Отличное гашение дуги, подходит для суровых промышленных условий

4 Монтаж & Wiring Information

Монтажные размеры (China version LC1G475C)

Ширина: приблизительно. 140мм

Высота: приблизительно. 270мм

Глубина: приблизительно. 150мм

Монтаж: Standard 35mm DIN rail or screw mounting

Масса: приблизительно. 10.6кг

Требования к проводке

1. Main circuit terminals: Suitable for copper/aluminum cables; crimping lugs recommended
2. Control circuit terminals: Suitable for 1.5–2.5mm² control cables
3. Распродажа: ≥50mm left & верно, ≥100mm top & bottom for proper heat dissipation

5 Совместимость аксессуаров & Matching Products

6 Межбрендовые альтернативы

7 Установка & Commissioning Tips

1. Pre‑installation inspection

Проверить модель, rated parameters and control supply match

Check for physical damage, контактное окисление

Ensure flat mounting surface and secure rail

2. Installation steps

DIN-рейка: Align to 35mm rail, press firmly until locked

Винтовое крепление: Use M6 screws, torque 8–10N·m

Электропроводка: Main circuit first, then control circuit; observe terminal torque

3. ввод в эксплуатацию & testing

No‑load test: Apply control power; check smooth operation, abnormal noise

Load test: Run under load; monitor current, coil temperature

Aux contact test: Verify NO/NC switching and contact resistance

4. Maintenance recommendations

Regularly inspect contact wear; replace if wear >1мм

Clean arc chamber; remove dust and metal particles

Check coil insulation resistance ≥1MΩ

Retighten all terminals to avoid overheating

8 Примечания к выбору

1. Select contactor according to load type (AC‑3/AC‑4/AC‑1)
2. Для управления двигателем: Contactor rated current ≥ 1.1 × motor rated current
3. For frequent starting/reversing (AC‑4): Derate by 20–30%
4. For unstable control supply: Prefer wide‑voltage coil models
5. When used with thermal relay: Ensure matching ratings

Installation Manual – Schneider Domestic TeSys LC1G475KUEC 3‑Pole Contactor

Док №.: DOCA0189ZH‑04 (based on official Schneider TeSys Giga installation guide)

Applicable model: LC1G475KUEC (domestic TeSys Giga 3‑pole contactor)

Версия: январь 2023

⚠️ Safety Warnings (Обязательно прочтите)

1 Обзор продукта

1.1 Product Identification

Модель: LC1G475KUEC

Ряд: Domestic TeSys Giga (LC1G)

поляки: 3П (3НЕТ, 3‑pole normally open)

Номинальный ток: AC‑3 475A (440В)

Напряжение катушки: 100–250V AC/DC (wide voltage)

Вспомогательные контакты: 1NO+1NC standard

Стандарты: IEC 60947‑4‑1, ГБ/Т 14048.4

Версия: Китайская версия (suffix C; no UL certification)

1.2 Размеры (Единица: мм)

2 Pre‑Installation Preparation

2.1 Инструменты

крестовая отвертка (PH3)

Hex key (per fixing screw size)

Torque wrench (5–20N·m range)

Wire stripper (1.5–2.5mm² control & large main cables)

Crimping tool (for cable lugs)

Мультиметр (coil resistance & insulation check)

Spirit level

2.2 Материалы

Mounting plate (металл, thickness ≥3mm, плоский, burr‑free)

M6 mounting screws (мин. 4 шт.)

Cable lugs (for main circuit cables)

Control cable (1.5–2.5mm² copper)

Main cable (≥150mm² copper recommended)

Insulation tape / heat‑shrink tubing

Marker pen

2.3 Экологические требования

2.4 Проверка продукта

1. Check packaging and transport damage
2. Verify model label (LC1G475KUEC)
3. Inspect contacts for oxidation, pitting, foreign matter
4. Manually actuate armature; check smooth operation
5. Measure coil resistance with multimeter
6. Test auxiliary contact switching

3 Процедура установки (Surface Mounting)

Примечание: Domestic LC1G475KUEC supports surface mounting only; not for DIN rail.

3.1 Mounting Plate Drilling (Необязательный)

1. Mark holes at 100×120mm
2. Drill diameter: φ6.5mm (for M6)
3. Deburr after drilling

3.2 Hanging & Fixing

1. Hang: Locate bottom hanging holes onto mounting plate pins/screws
2. Preliminary fix: Hand‑tighten top M6 screws
3. Final fix: Torque all 4 screws to 3±0.3N·m (top‑down, diagonal)
4. Level check: Ensure inclination ≤30°

3.3 Установка аксессуаров (В контакты / Механическая блокировка)

1. Вспомогательные контакты

Disconnect control power

Align and push into top slot until click

Verify secure locking

2. Mechanical interlock

Keep ≥50mm between two contactors

Mount interlock on sides

Adjust to prevent simultaneous closing

Test manually

4 Wiring Procedure

4.1 Pre‑Wiring Notes

1. Confirm all power disconnected
2. Main cables must use proper crimp lugs
3. Control cable strip length: ~8–10mm
4. Последовательность: Main circuit first, then control

4.2 Проводка главной цепи (3П, L1/L2/L3 → T1/T2/T3)

1. Open main terminal cover
2. Insert lugged cables
3. Крутящий момент:

Медь: 12±1N·m

Алюминий: 14±1N·m (with anti‑oxidant)

4. Securely tighten; check by gentle pull
5. Close terminal cover

4.3 Проводка цепи управления (Coil A1/A2, Aux NO/NC)

1. Open control terminal cover
2. Катушка:

А1: Control supply +/Line

А2: Control supply –/Neutral

3. Aux contacts:

НЕТ: 13–14 (проведение, indication)

Северная Каролина: 21–22 (блокировка, вина)

4. Control terminal torque: 2±0.2N·m
5. Close cover

4.4 Схема подключения

5 Mounting with Thermal Relay (LR9G475)

5.1 Direct Installation

1. Confirm matching: LC1G475KUEC + LR9G475
2. Align thermal relay to top slot
3. Push down until click
4. Check secure mounting
5. Connect pre‑installed busbars
6. Torque busbar screws: 8±0.8N·m

5.2 Примечания по проводке

1. Основной: Power → Contactor → Thermal relay → Motor
2. Контроль: Thermal relay NC (95–96) последовательно с катушкой контактора
3. Set thermal relay current to motor rated current

6 ввод в эксплуатацию & Тестирование

6.1 No‑Load Test

1. Apply control power (main open)
2. Check smooth closing, no abnormal noise
3. Verify aux contact switching
4. Check rapid opening
5. Repeat 3–5 times

6.2 Нагрузочный тест

1. Apply main power
2. Start motor; check current within rating
3. Monitor coil temperature ≤60°C after 1h
4. Check terminal temperature ≤70°C (infrared)
5. Simulate overload; verify relay trip

6.3 Contact Wear Diagnosis (LC1G Feature)

1. Monitor via auxiliary contacts
2. Warning when wear >1мм
3. Replace contactor promptly

7 Обслуживание & Service

7.1 Routine Inspection (каждый 6 месяцы)

1. De‑energize; inspect for dirt, повреждать
2. Clean arc chamber (compressed air ≤0.3MPa)
3. Check contact resistance ≤500μΩ
4. Check coil insulation ≥1MΩ (500V megger)
5. Затяните клеммы
6. Test operation

7.2 Replacement Schedule

7.3 Поиск неисправностей

8 Безопасность & Среда

8.1 Safe Disposal

1. Disconnect all power before scrapping
2. Remove all wiring
3. Separate metal & plastic for recycling
4. Contacts contain silver alloy; recycle as precious metal

8.2 Экологическое соответствие

RoHS compliant; free of Pb, Hg, и т. д..

Plastic housing recyclable

Dispose per local regulations

9 Appendix – Technical Data