Automotive motor thermal protectors, also known as overload devices or inherent motor protection, are crucial for preventing electric motors from overheating and potentially failing. They detect excessive temperature or current and shut down the motor to prevent damage. These protectors are designed to protect the motor’s internal components, such as windings and insulation, from damage caused by overheating.
To install a motor thermal protector correctly, ensure it’s placed in a location that accurately detects the motor’s temperature, typically near the windings or stator. Proper wiring is crucial, and the protection settings should be adjusted based on the motor’s design and the operating environment.
The Thermostat Switch KSD301 bimetallic disc operates in a Normally Open (不) configuration. This means the circuit is initially open (斷開連接) at normal temperatures. When the temperature rises to a predefined threshold, the bimetallic disc bends, closing the circuit and allowing current flow.
NC type is the “emergency brake” for safety protection, and NO type is the “temperature trigger” for intelligent control. The action logics of the two are complementary. The selection must strictly match the circuit function requirements (comprehensive).
The bimetallic strip is the “溫度感應器 + actuator” integrated component of KSD301. Its disc-shaped structure design and alloy ratio directly determine the temperature control accuracy and reliability.
NTC (負溫度係數) 溫度傳感器是一種溫度測量元件，隨著溫度升高，熱敏電阻的電阻的指數降低. 它的核心是由燒結金屬氧化物製成的陶瓷半導體 (例如錳, 鈷, 和鎳), 並且通過測量電阻變化來推斷溫度. 以下是其核心技術特徵, 應用, 和選擇點:
空調溫度傳感器銅頭是銅管的檢測, 快速溫度傳導; 橡膠頭通常用於檢測環境溫度, 耐腐蝕性, 高可靠性.
使用高級傳感技術, 溫度可以非常準確地測量，誤差範圍很小, 滿足您對準確溫度測量的需求.
選擇熱敏電阻時, 確實需要綜合考慮許多關鍵參數和封裝 (環氧樹脂封裝, 玻璃珠封裝, 薄膜封裝, 貼片封裝, 不銹鋼探頭感測器封裝, 注塑塗層). 讓我詳細告訴你:
熱敏電阻的阻值範圍較寬, NTC熱敏電阻的阻值範圍可以從幾十歐姆到上萬歐姆, 甚至可以根據需要定制特殊裝置. 常用電阻值為2.5Ω, 5哦, 10哦, ETC。, 常見電阻誤差為±15%, ±20%, ±30%, ETC. PTC熱敏電阻的阻值範圍通常為1KΩ至數百KΩ.
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