The mine high-voltage vacuum power distribution device (flameproof type) is abbreviated as high-grade and is mainly used for protection and control of high-voltage power supply systems that are not directly grounded, and can be used as a direct-start high-voltage motor. According to the current use of mine products, the three main types of mine high-voltage vacuum power distribution devices (flameproof type) are: BGP-â–¡/10 (6) II series of mine explosion-proof high-voltage vacuum power distribution devices , BGP46-â–¡ / 10 (6) YZ series of mine explosion-proof mobile substation high-voltage vacuum power distribution device and PBG-â–¡ / 10 (6) Y series of mine explosion-proof permanent magnet mechanism high voltage vacuum power distribution device. Today we will focus on the installation, use, and maintenance of the BGP series of mine flameproof high-voltage vacuum power distribution devices.
First of all, we first look at the scope of application and the use environment of mine high-voltage vacuum power distribution equipment. The BGP series explosion-proof high-voltage vacuum power distribution equipment for mining is suitable for use in coal mines and other surrounding media containing explosive gas (methane mixture) in the environment of rated frequency 50Hz, rated voltage 10kV or 6KV, rated current to 630A The three-phase AC neutral point is not directly grounded by the high-voltage power supply system for protection and control, and can be used as a direct start high-voltage motor. The BGP series explosion-proof high-voltage vacuum power distribution equipment for mine use advanced intelligent multi-function integrated protection device, which is reliable and sensitive to protection, and has high measurement accuracy. With the Chinese menu human-computer interaction interface, the display information is rich, and the operation is intuitive and simple.
BGP series explosion-proof high-voltage vacuum distribution equipment for mine has RS485 serial communication port (intrinsically safe design), which can realize the communication network with the same kind of distribution equipment, and also can access the KJ275 coal mine power monitoring system. The upper computer can Query the various operating modes and parameters of the power distribution unit, the operating status, and information about the fault after the fault. Each related equipment of the BGP series explosion-proof high-voltage vacuum power distribution equipment for mine and distribution equipment network communication must be a product that has obtained relevant certificates of conformity, and passes the on-line test qualification, and shall not connect untested products.
The BGP series of flameproof high voltage vacuum power distribution devices for mining can be used under the following environmental conditions: 1. The altitude does not exceed 1000M, the atmospheric pressure is 80-110kpa; 2. The ambient temperature is -20--+40 degrees Celsius; 3. The air Relative humidity less than 95% (when plus or minus 25 degrees Celsius); 4, no strong vibration and shock vibration; 5, with the installation of the vertical plane inclination of not more than 15 degrees; 6, in the absence of enough to corrode metal and damage the insulation of the gas and In a steam environment; 7, where there is no dripping water and who is immersed in; 8, in a dangerous place with coal dust and explosive gas; 9, pollution level 3; 10, installation category IIIl; 11, use category A.
Next, we look at the installation precautions for mine flameproof high-voltage vacuum power distribution equipment. 1. Check the technical parameters on the ground before installation, check whether the parts and the explosion-proof surface of the device are intact, whether there is any damage caused by the transportation, and whether the internal joints and fasteners are loosened. 2, check the product's factory inspection records set product certification. 3, before the installation should also be conducted test frequency pressure. When the power frequency voltage withstand test is performed, the gate is opened, the high voltage terminal of the voltage transformer, the varistor is released, and the plug of the protector is unplugged.
Followed by the use of BGP series of mine explosion-proof high-voltage vacuum power distribution equipment, due to the more complex process, we only choose to focus on. First, the high voltage vacuum power distribution device closing, 1, the operation of the isolation switch handle to the closing position, three-phase high voltage power supply is turned on, observe the display voltage value, ensure that within the allowable range, self-test protection function, setting the corresponding parameters , Reset standby; 2, the operation of the circuit breaker closing handle to the closing position or press the electric closing button, the closing motor starts, closing is completed; 3, if you need to close again, carefully observe the cause of the failure, troubleshooting , repeat the above closing procedure, failure does not rule out the recombination gate. Second, when the BGP series mine explosion-proof high-voltage vacuum power distribution device is opened, attention should be paid to the opening of the device. 1. When the device is closed, the operable protector can be used to perform the sub-gate test; 2. The manual sub-rotation knob can be rotated to realize rapid mechanical operation. Split.
The third issue that needs attention in the use of BGP mine flameproof high-voltage vacuum power distribution devices is the operating instructions. There are four protection device operation buttons on the front door of the power distribution device, namely, downshift, confirmation, reset and missed test. The down key is used to select menu items and adjustment parameters. It can also be used to lock the measurement interface; the confirmation key is used to enter, exit the menu, and start adjusting parameters. At the same time, it also plays the role of moving the cursor to the right; the reset button is used to make the protector return to normal state under the condition of failure of the high voltage power distribution device, and can also be used as an exit key; the missed test key is used for leakage test.
The use of the BGP series of mine flameproof high-voltage vacuum power distribution devices is not described here. This is a simple introduction to the use process. 1. Real-time display interface: Power-on display - Cyclical flip display of measured value interface - Monitoring of resistance and phase angle interface - Current display interface - Three-phase voltage measurement; 2. Operation menu: Press the enter key to enter a menu, display current setting, Voltage setting, leakage setting, local parameters, field test, event recording, and exit.
Third, maintenance and troubleshooting of the BGP series of mine flameproof high-voltage vacuum power distribution equipment. BGP series of mine flameproof high voltage vacuum power distribution equipment maintenance and repair . 1. After the power distribution device is working normally, every flameproof joint surface shall be checked once every six months to ensure that each explosion-proof surface has no rust, and the explosion-proof gap is not more than 0.4MM. 2. After the power distribution device has been downhole for three days, pay attention to whether or not the components have caused an insulation resistance failure due to moisture before power transmission. 3, vacuum circuit breaker, every six months should be carried out the following maintenance and repairs: clean circuit breakers, to the operating mechanism of the transmission parts and lubrication, to keep the high-pressure part of the dust; check the circuit breaker fasteners are loose or fall off; vacuum arc Room frequency withstand voltage; inspection and adjustment of contact parameters. 4. It is forbidden to check the electricity in violation of regulations after opening the lid in the well. 5, no damage to the explosion-proof surface. 6. It is forbidden to change the parameters and specifications of the intrinsically safe circuits and the intrinsically safe circuits.
BGP series explosion-proof high voltage vacuum power distribution equipment for mining faults and troubleshooting methods No. Symptoms Main reason Handling advice 1 Isolation operating mechanism Rotary lockout Unreleased Unlocking 2 Smart protector non-responsive fuse Fuse change Insurance 3 Circuit breaker Can not close the pressure loss magnet does not pull, the position of the mechanism is not reasonable, the electric button, the limit switch is not in place, 26-pin plug is not inserted to check the undervoltage protection adjustment mechanism, adjust the electric button and the limit switch, plug in 26 core .
4 After the closing, the high voltage short-circuit indicates that the short-circuit setting value of the switch-off is not suitable for re-setting according to the actual load requirements. 5 After the closing, the overload indicates that the overload setting of the switch-off is not suitable. According to the actual load requirements, it is re-tuned. 6 After the fault phenomenon, the smart protector refuses to move. Can protector power supply failure Replace the intelligent protector, check the fault circuit 7 After the intelligent protector is activated, the circuit breaker does not drop the brake. The electromagnet plunger is jammed and the electromagnet plunger 8 is normal after power on. It can only be closed and can not be charged. The co-electrical push button is not in place, the power switch circuit has a failure to adjust the push button, check the power line 9 can't divide the voltage loss circuit by hand, and the switch mechanism fails to adjust the opening mechanism, check the light in the main cavity of the voltage loss circuit 10 is not The bright melting core is burnt out, the bulb is damaged, and the circuit fault is replaced with the fuse and bulb. Checking the circuit above is a matter to be noted for the installation, use, and maintenance of the defensive high-voltage vacuum distribution system for the Delixi BGP series. I believe that everyone After reading it will be helpful. Finally, look at the model meaning of the BGP series mine flameproof high-voltage vacuum power distribution device
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