The soft starter is suitable for coal mines containing explosive gas (methane) and coal dust.In an AC 50Hz, voltage 1140V or 660V, neutral ungrounded power supply system, various forms of soft start (such as current clipping, voltage ramp and power torque ramp) are performed on three-phase squirrel-cage motors with currents up to 200A and 400A.The controller also has the perfect protection function and the fault display function, greatly reduces the time of troubleshooting.
Brand:
WANTAIItem NO.:
QJR—200/1140(660)Product Origin:
ChinaShipping Port:
ShanghaiLead Time：
30days
1.Application
Mining explosion-proof and intrinsically safe low voltage AC vacuum soft starter (hereinafter referred to as soft starter) is a product independently developed by our company.It adopts advanced microprocessor and power electronic control technology, realizes the soft start of AC motor, eliminates mechanical and electrical shock to the maximum extent, prolongs the service life of equipment, and is an ideal replacement product of hydraulic coupler and other motor starting equipment.It has the characteristics of advanced technology, safe and reliable work, easy maintenance, big starting torque and long service life, and its technical performance has reached the international advanced level.
2.Characteristics
Liquid crystal screen display.
Online protection monitoring
The parameters of panel adjustable.
RS485series communication function.
3.Model composition and significance
4. Explosion-proof type：Mining explosion-proof
Explosion-proof sign：ExdⅠMb
5. Specification
Rated working voltage：AC 1140V、660V
Rated working current：（400A）10A～ 630A，（200A）10A～ 500A，The current setting step size is 1A.
At rated voltage 1140V、η*cosφ=0.75 by the control motor maximum power of：（400A）590kW；（200A）296kW
At rated voltage660V、η*cosφ=0.75 by the control motor maximum power of：（400A）340kW；（200A）171kW
Control circuit voltage：DC12V
Maximum current overload multiple during soft start: adjustable below 8 times
Rated frequency：50Hz
Soft starting time：1～300s；（Since the internal silicon controlled of the soft starter is naturally cooled, the soft starting time is generally set between 6 ~ 15s to avoid damage caused by the silicon controlled heating for a long time!）
Starting interval: no more than 12 times per hour
Jump start pulse time: 0 ~ 10s.
Jump-start pulse current: 100 ~ 800%.
Current limit：0.5～8Ie
Starting voltage：0～100%Ue
Typed of cooling：Natural cooling
Communication mode：RS485 serial communications
Tel : +8618355333980
Email : contact@wantaiglobal.com
Address : Intersection of Guohuai Road and Chunshen Street, Shannan New District, Huainan City, Anhui province, China
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