it is the ideal updated product to substitute traditional triangle start, reactor start and self-coupling voltage-reducing start

  QJZ series of mine explosion - proof intelligent AC motor soft  starter is a high-tech optical , mechanical and electrical product . The product is ideal for heavy-load soft start of 1140V,660V . asynchronous motor ,and it is widely used in under-well coal mines , open air coal mines,metallurgical mines, harbors and ports ,coal selection factory for soft start, current-limiting start,energy-saving start and soft stop of transporation equipments under heavy loads and un very unfavorable environments.in addition,it is the ideal updated product to substitute traditional triangle start,reactor start and self-coupling voltage-reducing start.

1.The core is an advanced digital transnission controller based on a 16-bit single-chip microcomputer;

2.Preset "S" shape curve for close-loop automatic control on motors;

3.A variety of start modes such as current-limiting start,slope voltage start , torque-control start and torque-im pulse startect;

4.Smoothly and reliably accmplish the start process with the accel-eration within 0.1-0.3m/s2

5.Standard RS 485 communication interface is attached.