Mining Explosion-Proof and Intrinsically Safe Type Vacuum Combination Switch Starter

• Certification: ISO9001, CCC
• Protection: Corrosion Resistance
• Installation: Vertical
• Housing: Cast Iron
• Ex Grade: Exd [Ib] I MB
• IP Grade: IP54
• Model NO.: QJZ-4×400/1140(660)
• Transport Package: Export Packaging
• Specification: L*D*H: 2000*900*1010
• Trademark: Wantai Group
• Origin: Huainan, China
• HS Code: 8537209000
• Production Capacity: 1000sets/Year

Product Description

QJZ-4×400/1140(660) 
Mining explosion-proof and intrinsically safe type vacuum combination switch starter

Application
This equipment is suitable for mines containing explosive dangerous gases and coal dust. In the line of AC 50Hz and rated voltage AC 1140 (660) V, it can start and stop the logic of less than 4 three-phase squirrel cage asynchronous motors at the same time. Control and protection, and can change the phase sequence when stopped. It is especially suitable for centralized monitoring of power, mining, transportation, coal mines and other working faces.

Technical Parameters

Model	Rated voltage(V)	Multi - loop	Rated current(A)	Size(L*D*H)MM
QJZ-4x40, 45, 60/1140(660)	1140, 660	4	40	790*580*780
			45
			60
QJZ2-4x80, 120, 200/1140(660)			80	1070*1006*610
			120
			200
QJZ-4x400/1140(660)			400	1850*868*1010

Technical advantages and functional characteristics

1. The device takes PLC as the control core, through the collection, analysis and calculation of the running state signal to complete the control and protection of the motor by the multi-loop starter, and has the functions of fault memory, fault query and menu operation, liquid crystal Chinese display and so on.

2. Local control and intrinsically safe remote control functions.

3. The function of independent use of four circuits.

4. With four circuits to control the start / stop function in the set time order.

5. It has the function of recording fault type and recording the specific time of fault occurrence.

6. It has MUDBUS standard communication protocol format, which is convenient for remote monitoring and control.

7. The wiring mode is all fast cable connector mode, which is easy to install and easy to use.

8. It has the function of wireless wifi, which is convenient for networking.