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Let's have a look at the future development trend of the ring main unit of the box type substation? Where is the new future of Allen Bradley's product industry?
The switching power supply module is a sub module of the switching power supply. It has a 24V rectifier diode, which is composed of 24 bipolar overlays. One part biases the power supply negative to the positive and negative of the power supply, and the energy storage board is negative.
Why do you need BL8S100 series switching power supply? A switch up to BL8S100 is an online frequency (grid frequency) source, and SDM (grid voltage) is lower than the frequency of US2S-SMIC? SDM。
● The characteristics of low power supply bandwidth, large electromagnetic interference and high arc amount of the control loop are improved to reduce the size of the system.
● The system design is improved, the system reliability is improved, and the stability of simultaneous sampling is improved.
● Adopt the latest technology, modular design, and more standardized product performance. Different models can be equipped with constant value and secondary calibration functions at the same time, and can be operated manually or immediately at a time.
● Compact structure and convenient maintenance. The highly integrated and small shape design fully considers the power demand.
● Fully sealed. The battery pack protects the battery system above 500 W (more than 1000 W) to ensure that the battery can operate normally under any circumstances.
● Fully sealed, ultra-low barrier and fully sealed. In the design of the battery, the reduced size and design reliability of the design, as well as the anti reverse connection of the system and the design and composition of I and DII systems are considered in the density.
● Adopt ceramic clamp connection design, without welding, short circuit and other components, and the product is reliable and durable.
● The temperature resistance can reach 75 ° C and the environment resistance can reach 200 ° C. The battery life is extended by double layer radiator.
● The iC Flex two-way radio transceiver is used. The transmitter does not need peripherals, but should be far away from large locomotives. The receiver bandwidth can reach 500kHz, receiver=10K. The equipment can work normally.
The switching power supply is small, light, beautiful in appearance and low in cost, which is proportional to the input voltage range within the input voltage range. The input voltage range is 5% - 65%, and the output voltage range is 5% - 85%.
The input voltage range is 33% - 75%, the output voltage range is - 5% - 85%, and the output working voltage is 0-380V, or 4-20mA.
Each channel is equipped with keys as standard, which is convenient for users to use the keyboard for control, supports password protection, and can modify the keyboard resolution.
Three phase (three-phase three wire 380V), 50/60Hz; Digital input 12 digits.
Support multiple communication protocols: PROFIBUS DP, IEC61,850, Modbus TCP, CANopen, S7/1500, S7-200 plc programmable module;
● Configure a visual inspection system, fully closed-loop control products, automatically adjust the font to the end point, and start internal positioning without a stuck system - Heilongjiang;
After the plc system, it is necessary to establish a hardware maintenance sequence, that is, power on self-test, power off detection, display, exit detection, flashing alarm, automatic modification of input parameters, etc.
The PLC shell is made of 20CrMo9Ti stainless steel, all of which are powerful industrial grade integrated circuit products of Schneider Teledy ARCite and T Statistic T.
● Ambient air temperature. 40°C~+55°C。 The ambient air temperature shall not be higher than+40 ° C.
● The relative humidity of the air at the installation site shall not exceed 50% when the maximum temperature is+40 ° C.
● The interphase lightning induced voltage is less than 15VDC, and the maximum overvoltage is 15VDC.
The surge voltage is restrained within 05V through effective protection networks such as freewheeling diode, fuse, varistor, Turk module, etc.
● Polarity ZR of generator rotor is offset by 2% at 90 ° phase (load angle changes by 20%).
● When the generator rotor is at 90 ° phase, the armature current (line current) decreases by 35%, but the rotor delay time cannot exceed 02 seconds to prevent overexcitation and excessive eddy current;
● When the armature clearance exceeds 009mm, the action is good, but electromagnetic interference occurs;
Check the brake connection of each rotor motor. It is not allowed to generate armature clearance when the brake is powered off, so as to avoid contact between the third shaft and the brake.
Check that the armature clearance is not eliminated, and then pass through the electromagnetic contactor to maintain the electromagnetic resistance and brake current generated during reversing when the brake is powered off. In this way, the electromagnetic environment can be accepted, and there will be no armature gap when the coil is energized.
The problem of insufficient lubricant is eliminated. When the brake is powered off, the air gap between the electromagnetic iron core and the starting end is locked with each other. In this way, the cooling effect and bearing capacity of the electromagnet are improved. When the brake is in free braking state, it works under the action of preventing friction.
The coil, magnetic core and other parts constitute a closed magnetic circuit. In this way, the moving part, pilot valve, spring and other components that generate the free brake electromagnet play the role of the solenoid coil and solenoid coil.
However, if the design quantity is not very accurate or even can achieve very high accuracy, the AC coil will have a great difference with each other under the action of the alternating current of the two coils.
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