□ Mine explosion-proof vacuum feed switch - purpose and scope of application: :: :
This switch is mainly used in underground coal mines, AC, rated current / or /, rated current ampere
and below In the power supply system, it can be used as a branch switch of the main switch or for infrequent starting control of large-capacity motors. When overload, short circuit or leakage occurs in the power supply line, the circuit can be automatically cut off. This switch has a selective leakage protection function. When used as a main switch, it has three-phase symmetrical leakage protection for backup of branch switch leakage. Protection, overload protection has anti-advance limit characteristics. The near-end outlet short circuit is protected by a large current voltageless release circuit, and it also has a leakage locking function when used as a branch switch. The protector adopts Chinese character LCD display, advanced microcomputer processor, high-precision data processing and advanced protection algorithm, with high protection accuracy and fast response speed. It can complete leakage protection, leakage blocking, selective protection, undervoltage, overvoltage, three-phase unbalance, overload, short circuit, wind power
Gas blocking, calendar electricity metering, fault memory, and is also equipped with R communication interface.
This switch can be used under the following environmental conditions:
The altitude does not exceed meters
b Ambient temperature ℃～+℃
The relative humidity of the air does not Greater than % (+℃
)
No strong vibration and shock vibration
The installation inclination with the vertical plane does not exceed
In air containing biogas and coal dust , but there are no gases and vapors that are strong enough to corrode metal and destroy insulation
A place without dripping water.
Two main technical features:
Rated voltage:
Rated current
Limit breaking current
Short circuit protection action time: < milliseconds
Resistor leakage action time Milliseconds for branch switching and milliseconds for main switching (no delay
~ milliseconds (with delay
) When the relative capacitance of the power grid is not greater than, and the branch capacitance is not greater than, the leakage resistance is,
, the following can reliably realize selective leakage protection and backup protection, and can ensure that
selectively achieve millisecond safety protection indicators during leakage. The action time of three-phase symmetrical leakage protection and backup leakage protection is not greater than
Milliseconds and milliseconds (with delay).
When used as a branch switch, the leakage blocking function can be reliably realized when the load side insulation resistance is lower than +%(+%(+%
Overload protection characteristics:
Long-term inactivity
Minutes to hours in hot state
Seconds to seconds in hot state
Seconds to seconds in cold state
Short circuit protection characteristics:
The short circuit protection setting range is ~, the action time is < milliseconds, and it has a voltageless release function that is greater than times the rated current setting value. The outlet short circuit adopts a large current voltageless release circuit, and the action range is greater than times the rated setting value current. Time
Milliseconds.
Four underground inspections
★★Warning: It is strictly forbidden to open the cover while power is on, and it is forbidden to change the parameters of components at will.
★★Maintenance instructions: Pay attention to the intervals during maintenance The explosion surface must be carefully protected and must not be bruised or scratched. The junction box cover must be tightened in accordance with the standard requirements. The spring gasket must not be missing. The sealing ring of the under-installed introduction device must not be lost. It must be installed in accordance with coal mine safety regulations or equipment.
The standard fastening pressure plate is well prepared.
Five transportation and storage
When the product is lifted without a packaging box, the sling can be placed under the outlet of the product, and the lifting and lifting should be carried out slowly. .
During transportation, it must be moisture-proof, rainforest-proof and dust-proof, and no rolling or inversion is allowed.
The product should be stored in a place where there is no immersion in rain or snow, air circulation and relative humidity should not exceed %(+℃
℃< br/>)
The temperature is stored in a warehouse of
℃～+℃
.
Six unpacking and inspection
Before unpacking, you should check the relevant signs on the box, such as Product name, specification, quantity, receiving unit, etc., shall be checked against the receipt
.
When unpacking, the outer packaging should be gradually removed to avoid damage to the outer surface of the product.
After unpacking, check the following items
Whether the external parts of the product (operating handle of the inlet and outlet device, etc.) are damaged
b Whether the packing list certificate and product instructions are complete
Whether the product nameplate and various labels are complete.
Seven ordering instructions
Starter model
Working voltage, if not specified, factory configuration
Number of units to order
Jining Haichuan Industrial and Mining Equipment Co., Ltd. (r,) is located in Kongmenzhi Jining, the hometown of Xiangshui Margin, is the capital of the canal. It has an advantageous geographical location, developed communications and convenient transportation, rich mineral resources, many varieties and large reserves. It is concentrated with Yankuang Group, Jining Mining Group, Zibo Mining, Feicheng Mining, Zaozhuang Mining, Linyi Mining, Xinwen Mining Group, etc. One of the civilized coal bases in the country. Jining Haichuan Industrial and Mining Equipment Co., Ltd. mainly deals in mining equipment and accessories, Wujinjiaodian instrumentation, electronic products, engineering machinery, electrical equipment and accessories, lighting fixtures, etc. It is an industrial and mining equipment supply enterprise integrating industry and trade. The company's business philosophy is: development, innovation and honest management. Reasonable pricing, continuous improvement, and customer satisfaction. Over the years, the company has cooperated with many excellent brands of professional mining equipment. With the eternal goal of pursuing excellence and returning to society, the company is committed to building an excellent industrial and mining equipment supplier and service brand, and has won the trust and praise of customers. We sincerely cooperate with you and serve you wholeheartedly. We welcome new and old customers to call us for consultation and negotiation to create a better future together.
Address: North end of Guhuai Road, Rencheng District, Jining City, Shandong Province
Postcode:
Tel:
Mobile phone ：
Contact: Manager Jiao
：
Email: @
Mine flameproof vacuum feed switch