According to the actual situation of power supply network and protection system under mine, a long distance faults online monitoring program is presented for overcoming the short protection distance.
Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO) and crossover-current protection. Special power-up sequencing is not required.
内部电路保护包括滞后热关机，欠压锁定(uvlo)和交叉电流保护。特别功率提升排序。
3
Safety protection, energy save and extend heater life. Auto power cut-off under the circumstances of standby for 30 minutes, failure of temperature test, PCB, heating element and low tip temperature.