Use:
This series mining power switch is used as main switch,branch switch or infrequent start large-capacity motor in the coal mine or similar place where is fled with explosive gas,coal dust,etc.,in the supply system of AC50Hz,voltage1140V/660V,currentis 1000A with neutral point ground-disconnected three-phase electricity network.
Technical Descriptions:
· This series of products adopt vacuum circuit breaker to close and open the main circui,electric closing,shunt trip,undervoltage trip or manual trip.It has features such as long service life,less maintenance,and reliable operation.
· Thanks to the advanced protector processor,the protector can offer high-precision data processing and advanced protection algorithm, to ensure high protection precision and quick response.It has the functions of overload protection,short circuitprotection,undervoltage protection,open-phase protection,voltage loss protection,three-phase imbalance protection,leakage lockout protection,gas power off protection,symmetrica leakage protection and selective leakage protection.Besides,the protector can be remotely controlled for closing and opening.
· Memory function is available;it can remember the fault type,fault time,fault current value and system voltage,etc.,so that it is more convenient to be repaired and maintained.
· RS-485 communication interface is available;it can be connected to the system to achieve"four-remote control"function.
· It can be used as a power distribution main switch or branch switch.With square-shellquick-opening door.The device is designed with a drawertype core frame structure.The circuit breaker is equipped witha disconnecting switch in the front stage.As the disconnecting switch has a separate lameproof chamber,the incoming and outgoing lines will not cross.
· With an independent disconnecting chamber,the superior switching power supply is not required to be stopped upon repairing or maintenance,which completely solves the existing feed safety hazards.
Main Technical Data:
| Type and specification |
KJZ6-630 |
KJZ6-500 |
KJZ6-400 |
KJZ6-200 |
| /1140(660)YG |
/1140(660)YG |
/1140(660)YG |
/1140(660)YG |
| Rated voltage (V) |
1140,660 |
1140,660 |
1140,660 |
1140,660 |
| Rated current(A) |
630 |
500 |
400 |
200 |
| Breaking capacity(kA) |
15 |
15 |
9 |
9 |
| Electrical ife(T) |
30000 |
| Mechanicalife(T) |
30000 |
30000 |
15000 |
15000 |
| Breaker type |
Permanent magnetism |
| Protection device |
SCM or PLC adjustable |
| Main circut cable O.D. (φmm) |
42~78 |
28~63 |
| External diameter of cable in controlling circuit(Φmm) |
9~23 |
| Outline Dimension (mm) |
735×898×1040 |
677×740×978 |
| Weight(KG) |
400 |
300 |
Ruitop GlobalTrade (Shanghai) Co., Ltd.: Led by scientific and technological innovation, creating a model of excellence in the industry
The company focuses on the R&D and production of a series of high-performance products. In the field of professional lighting, for scenarios with complex environment and high reliability requirements, it has launched professional lighting products with special properties such as waterproof, dustproof, shockproof, explosion-proof, etc., to provide stable and reliable light source guarantee for all kinds of harsh environment operations. Coal mine explosion-proof lamps, explosion-proof electrical appliances, explosion-proof transformers, explosion-proof fans, explosion-proof switches, complete sets of switch cabinets, underground intelligent automation integration and other coal mine-related products ensure the safety and efficiency of coal mine operations with excellent quality. Polyurethane rubber rollers and rubber wheels are rich and diverse, covering customized monorail crane rubber wheels, shield machine polyurethane rubber wheels, etc., and can also provide a variety of non-standard customized products and accessories according to customer needs. In addition, products such as plastic products and synthetic materials also demonstrate the company's expertise in the field of materials.
The company's products are widely used in various fields such as electric power, railway, emergency rescue, petroleum, coal, metallurgy, municipal, shipbuilding, ports, and military , playing a significant role .
Ruitop GlobalTrade has built a sales and service network all over the country and abroad, no matter where the customer is, the company can quickly respond to the demand, with professional, high-quality, efficient service.
Q1.What is a mining explosion-proof vacuum circuit breaker?
A.mining explosion-proof vacuum circuit breaker is a specialized electrical device designed to safely interrupt power in hazardous mining environments. It uses vacuum interrupters to extinguish arcs and is housed in a robust, flameproof enclosure to prevent ignition of flammable gases or dust.
Q2.How does the explosion-proof design work?
The enclosure is engineered to withstand internal explosions caused by electrical faults. Any flames or pressure generated are contained and cooled within the housing, preventing external ignition of hazardous gases.
Q3.How often should maintenance be performed?
Routine inspections (every 6-12 months) are recommended to check contact wear, insulation integrity, and mechanical components. Harsh conditions may require more frequent checks.
Q4. What is the role of an electromagnetic starter in mining?
An electromagnetic starter controls the power supply to heavy-duty mining equipment (e.g., conveyors, pumps). It provides safe motor starting/stopping, overload protection, and short-circuit prevention.
Q5. How does it differ from a standard starter?
Mining-grade starters feature reinforced enclosures for explosion protection, corrosion resistance, and enhanced thermal tolerance. They often integrate advanced diagnostics for fault detection.
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