シュナイダー LC1E400 コンタクタ

の Schneider LC1E400 contactor is a 400A high-current AC contactor belonging to the EasyPact TVS series, specifically designed for industrial applications.

詳細仕様:

1. 基本パラメータ

極数: 3 極

定格動作電圧: Power circuit ≤ 690V AC 50/60Hz

定格動作電流:

– 400A under AC-3 utilization category (operating temperature ≤ 55°C, operating voltage ≤ 440V AC)

– 500A under AC-1 utilization category (operating temperature ≤ 40°C, operating voltage ≤ 440V AC)

制御コイル電圧:

– Common specifications include 220V AC 50/60Hz (例えば, LC1E400M7N) and 110V AC 50/60Hz (例えば, LC1E400F7N)

接点構成: 3いいえ (3 通常は開いています) 主な連絡先; some models are equipped with 1NO + 1NC補助接点

2. パフォーマンスの特徴

Conventional Thermal Current (Ith): 500A for power circuit at operating temperature ≤ 40°C

Rated Making & 遮断容量:

– Rated making capacity (Irms): 4000あ

– 定格遮断容量: 3200あ (at operating voltage ≤ 380V AC), IECに準拠 60947 標準

電気的寿命: 600,000 オペレーション (AC-3), 250,000 オペレーション (AC-1)

機械的寿命: まで 4,000,000 オペレーション

3. 利用カテゴリー

AC-3 (最も一般的な): For starting and stopping squirrel-cage motors

AC-1: For controlling non-inductive or slightly inductive loads (例えば, resistance heating equipment)

4. 典型的なアプリケーションシナリオ

– Motor control systems (power range: 220kW@415V to 280kW@690V)

– AC load control with power factor ≥ 0.95

– 産業用オートメーション機器

– Main switch control for lighting systems

5. インストール & 配線

– 取付方法: Base mounting

– 制御回路の配線: Bolt-fastened, compatible with 1-4mm² flexible or rigid wires

– Power Circuit Wiring: Cable with lugs or terminal connection; terminal specification: 2×30x5mm, 締め付けトルク: 35N・m

Selection Guide for Schneider LC1E400 Contactor

The Schneider LC1E400 is a 400A high-current AC contactor in the EasyPact TVS series, suitable for industrial motor control and high-power load scenarios. Follow these steps for correct selection:

1. Determine Basic Parameters
2. 負荷の種類 & 利用カテゴリー

AC-3 (最も一般的な): For starting and stopping squirrel-cage motors

AC-1: For non-inductive or slightly inductive loads (例えば, resistance heaters)

Selection Key Point: Choose the corresponding utilization category based on actual load. The LC1E400 has a rated current of 400A (AC-3) and 500A (AC-1).

2. 定格動作電圧

主回路電圧: ≤ 690V AC 50/60Hz

Selection Key Point: Contactor’s rated voltage ≥ maximum system voltage (推奨: 1.2× system voltage)

3. 定格動作電流

LC1E400 Parameters: 400あ (AC-3, ≤440V, ≤55°C); 500あ (AC-1, ≤440V, ≤40°C)

選択式: Contactor’s rated current ≥ Calculated load current × Safety factor (1.2~1.5 for motor loads)

Calculation Example:

– Rated current of a 400V, 200kW motor ≈ 361A (I=P/(√3×U×cosφ), cosφ=0.85)

– Selected current = 361A × 1.3 ≈ 469A. したがって, the LC1E400 (400あ) is insufficient; a larger model is required.

4. 制御コイル電圧

共通仕様:

– LC1E400M7N: 220AC50/60Hz

– LC1E400F7N: 110AC50/60Hz

– LC1E400U7N: 240AC50/60Hz

Selection Key Point: Must match the control circuit voltage (allow ±10% fluctuation)

1. Complete Selection Process

ステップ 1: Confirm Load Type & 動作条件

– Is it a motor load (AC-3) or resistive load (AC-1)?

– Does the ambient temperature exceed 40°C? (Affects rated current)

– Is the starting frequency high? (Affects electrical life)

ステップ 2: Calculate or Confirm Load Current

モーター負荷: Ie = Rated power (kW) × 1000 / (√3 × Ue × cosφ × η)

(うえ: 定格電圧; cosφ: Power factor; η: 効率)

抵抗負荷: Ie = Rated power (kW) × 1000 / うえ

ステップ 3: Select Contactor Specifications

1. 電流定格: Choose a rating ≥ calculated current and ≥ 400A
2. 定格電圧: Rated voltage ≥ maximum system voltage (例えば, 500V class for 380V systems)
3. 極の選択: 3 poles for three-phase systems (LC1E400 default); 4 poles optional for special needs (例えば, LC1E40004 series)

ステップ 4: Select Control Coil Parameters

– Choose coil voltage based on control circuit power supply (例えば, 220Vと, 110Vと)

– Ensure frequency matching (50Hz or 60Hz)

ステップ 5: Select Auxiliary Contact Configuration

標準構成: 3メイン接点なし

オプションの補助接点: 1いいえ + 1ノースカロライナ州 (例えば, LC1E400M7N) to meet control circuit requirements

– Add LA series auxiliary contact blocks if standard configuration is insufficient

Ⅲ. Key Parameter Matching Principles

1. 現在のマッチング

モーター負荷: つまり (コンタクタ) ≥ Ie (モーター) × (1.2~1.5)

– ダイレクトスタート: Factor = 1.5

– スターデルタ始動: Factor = 0.58

– Frequent starting/stopping or heavy load: Factor = 1.5~2.0

2. 電圧マッチング

– Rated insulation voltage ≥ maximum system voltage

– Control coil voltage must match the control circuit

3. Utilization Category Matching

AC-3: Suitable for motor starting, running, and stopping (typical application of LC1E400)

– Power range: 220kW@415V to 280kW@690V

AC-1: Suitable for non-inductive loads (例えば, 抵抗炉, 点灯) with higher current capacity (500あ)

1. 選定例

シナリオ: Select a contactor to control a 380V, 250kW three-phase asynchronous motor (direct starting, frequent starting/stopping)

Calculation Steps:

1. Calculate motor rated current:

Ie = 250,000 / (√3 × 380 × 0.85 × 0.9) ≈ 495A

(Assume cosφ=0.85, η=0.9)

2. Determine safety factor: 1.5 for frequent starting/stopping

Selected current = 495A × 1.5 ≈ 743A

3. 結論: The LC1E400 (400あ) is insufficient; a larger model (例えば, LC1E630) 推奨されています.
4. 正しい選択: LC1E630M7N (630あ, 220V ACコイル)
5. 選定メモ
6. Environmental Factors

– Derate rated current if ambient temperature > 40℃ (≈5% derating per 10°C increase)

– Consider derating for altitudes > 2000メートル

2. Coordination with Protection Devices

– Circuit breaker rated current ≥ Contactor rated current

– Thermal relay setting current should match the motor rated current

3. Life Considerations

– 電気的寿命: 600,000 オペレーション (AC-3), 250,000 オペレーション (AC-1)

– 機械的寿命: 4,000,000 オペレーション

– Choose a higher-rated or special-purpose contactor for frequent operation scenarios

1. まとめ

The core principles for selecting the Schneider LC1E400 contactor are “電圧マッチング, Current Margin, Category Compatibility, and Coil Adaptation”. Selection process:

1. Confirm load type and utilization category
2. Calculate load current and determine safety factor
3. Select appropriate current rating (≥ calculated value)
4. Match control coil voltage
5. Select auxiliary contact configuration
6. Verify coordination with protection devices

The LC1E400 is an ideal choice for motor control with power close to 200kW. For higher power or harsh load conditions, larger models such as the LC1E630 are recommended.

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