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Contact: Lorri Liu
Company: Huainan Wantai Electric Co., Ltd
Pingwei Industrial Park, Panji District, Huainan City, Anhui, China
Huainan 232089
Phone: 86-554-4333789
Fax: 86-554-4333789
E-Mail: Send Inquiry
Date/Time:  4/18/19 8:02 GMT

Low voltage combination switch

Low voltage combination switch
Mining explosion-proof and Intrinsically Safe Low-voltage Vacuum Combination
Switch (hereinafter referred to as combination switch) is used in coal mines
containing explosive gas and coal dust. It can logically control and protect the
start-up or stop of 4 sets of three- phase squirrel-cage asynchronous motors under
rated voltage 1140V (660V), AC 50Hz, and can change the phase sequence when the
motor stops. The switch is especially applied to centralize monitoring of mining,
transportation and other kinds of working faces with centralized dynamic loads.
The switch has advantages like high automation level, convenient and intuitive
man-machine dialogue, easy to networking, stable performance, sensitive protect,
reliable operations, etc. It is a perfect upgrade product for mine digitization.
Wantai founded in 1998, now the net worth is 430 million yuan, focused on the
research and development, production and sales of the Mining Explosion-Proof
Equipment , High Voltage Combination Switchgear, and Miner' s Lamp is also our
main underground products.
Technical characteristics
•The shell of the combination switch is cuboids with quick-actuating closures
structure. Reliable mechanical interlock and electric interlock system will ensure
closure actuated after the power cut off. Each unit of the switch is modular
structure in drawer plugged style
•The core control unit is Siemens PLC and has functions like programmable live and
expandable points of output and input. Network communication is easy to establish
with various functions such as telemetering, telecommunication, telecontrol,
teleregulation called “4T”. Unattended working faces and concentrated detection
and monitoring from ground control can be realized with functions above
•With display system in Chinese, and many control mode can be set like parameters
settings, light running, sequential control and dual double-speed (including light
double-speed, dual single-speed, and dual double-speed). The combination switch
has functions of display and memories about running condition and failure mode.
The efficiency of judging and removing breakdowns is improved greatly with
friendly human-computer interface
Low voltage combination switch
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SOURCE: Import-Export Bulletin Board (
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