PTC热敏电阻其特点是体积小(尺寸:1.9×0.6mm)、响应快、具有4层保护、并且有3个头串联(最多可有9个头串联)、可埋藏在电机的三相线圈中,可对不同温度进行保护,也可对电机的轴承、润滑剂等关键部位进行保护。
Application | Electrical mashines |
Sensor type | PTC single |
Max. operation voltage | 30V |
Nominal response temperature | 60°C |
Tolerance of Eta_NRT | ±5K |
Reproductibility of Eta_NRT | ±0.5K |
Initial resistance R_25 | <100Ω |
Resistance at a thermistor temperature of Eta_NRT -5K | <550Ω |
Resistance at a thermistor temperature of Eta_NRT +5K | >1330Ω |
Resistance at a thermistor temperature of Eta_NRT +15K | >4kΩ |
Therm. response time t_a | <5s |
Insulation test voltage U_is | AC 2.5kV |
Max. operating temperature | 180°C |
Top bearing temperature | 60°C |
Bottom bearing temperature | -25°C |
Approval | UL File no. E241244 |
Colour code | wh/gy |