In May 2020, Reynolds was recommended by relevant departments to apply for the Ministry of Water Resources's "2020 Key Promotion and Guidance Catalogue of Advanced and Practical Water Conservancy Technologies", and after formal review, expert review and comprehensive evaluation, Shanghai Reynolds RNHV series high-voltage inverter (technology) and RNMV series high-voltage solid-state soft starter cabinet (technology) were recognized by the Ministry of Water Resources as advanced and practical technologies for water conservancy and included in the "2020 Key Promotion and Guidance Catalogue of Advanced and Practical Technologies for Water Conservancy".
In recent years, Shanghai Reynolds Technology Co., Ltd. RNHV series high-voltage inverter and RNMV series high-voltage solid-state soft starter have been applied to 14 pumping stations in the renovation project of Jingdian large-scale pumping station of Jingtaichuan Electric Power Irrigation Administration in Gansu Province, which has achieved great success and brought good economic and social benefits to users.
After the completion of the transformation, the wear of the pump and valve is effectively reduced, the maintenance cycle is extended, the maintenance work is simplified, the operating life of the equipment is greatly increased, the operation and maintenance cost of the equipment is reduced, and the "water hammer effect" and "mechanical impact" are perfectly and effectively solved. And the comprehensive energy consumption has been reduced by 20%-30%, which is in line with the national policy of energy conservation and emission reduction.
Reynolds will increase the pace of innovation and apply 5G Internet of Things, digitalization, and information technology to improve the management level of large and medium-sized irrigation areas and irrigation and drainage pumping stations, and realize unmanned and less people on duty; Ensure the safe and efficient operation and continuous benefits of large and medium-sized irrigation and drainage projects, serve the rural revitalization strategy and economic and social development, and provide solid scientific and technological support and technical support for the modernization of the national water governance system and governance capacity!
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Introduction to the function of the inverter - Reynolds inverter
In power distribution equipment such as voltage distribution cabinets and switchgear at all levels of power plants and substations, the conductors connected between large electrical equipment such as generators and transformers and various electrical equipment are called busbars. Busbars, also known as busbars, are used to collect, distribute, and transmit electrical energy. The connection methods of the bus bar are ...
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Key points for the selection of AC contactors - Reynolds
1. Select varieties according to the above series according to the purpose and requirements of use
Note that the main circuit load type is strictly differentiated, whether it is DC or communication.
The communication contactor is different from the DC contactor, and is only suitable for DC-1 to DC-5 loads when used for DC loads.
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The inverter protects the motor - Reynolds inverter
1. The output of the inverter for overvoltage maintenance has the function of voltage detection, and the inverter can actively adjust the output voltage, so that the motor does not bear the overvoltage, and the motor runs within the set voltage range.
2. Undervoltage maintenanceWhen the voltage of the motor is lower than 90% of the normal voltage (some are set to 85% ...
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The reason for using frequency conversion speed regulation - Reynolds
Variable frequency speed regulation can be used in most motor drag occasions, because it can provide accurate speed control, so it can easily control the rise, descent and variable speed operation of mechanical transmission. The use of frequency conversion can greatly improve the efficiency of the process (the variable speed does not depend on the mechanical part) and at the same time ...
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Wiring method and principle of PLC and inverter shielded wire - Reynolds
In order to avoid the interference of the control signal line between the PLC and the inverter by the space electromagnetic field, the shielding wire can be connected to the outer layer of these control signal lines to improve the anti-interference ability of the system. This kind of wiring must be noted, and only one point can be selected for the grounding point of the shield. Whether it's on the PLC side, or ...
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Calculation of the braking resistance of the inverter – Reynolds
After selecting the resistance value of the braking resistor, the power value of the braking resistor should be confirmed, and the selection of the braking resistor power is relatively cumbersome, and it is related to many factors.
The instantaneous power consumed by the braking resistor is calculated according to the following formula: P instantaneous = ...
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The breaking capacity of the industrial control appliance switch
Assuming Icu=60KA, then when a faulty current of 60KA is generated in the line, the circuit breaker can safely cut off the circuit without abnormal conditions such as contact welding and blasting. Pay attention to the extreme breaking ...
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The heat dissipation method of the switching power supply
1. Transfer heat pipes for heat dissipation.
In many applications, heat generated from the base steel plate of the power module is transferred through the heat transfer components to the distant surface of the heat pipe. In this way, the temperature of the base steel plate of the power module will be equal to the temperature of the heat pipe heat dissipation surface, the temperature of the heat transfer parts, and the temperature of the two contact ...
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Characteristics and Discrimination of Resistance Damage - Reynolds
I often see many beginners tossing on the resistor when overhauling the circuit, and it is dismantling and welding, in fact, it is repaired a lot, as long as you understand the damage characteristics of the resistor, you don't have to bother.
Resistors are the most numerous in electrical equipment ...
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Control method of Reynolds inverter
The fulfillment device commonly used in the industrial field of Reynolds inverter has good speed regulation performance and simple and convenient operation method. Therefore, it is widely used in the automation system.
Typical wiring method for the main circuit of a Reynolds frequency converter
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Applicable mode of inverter maintenance - Reynolds inverter
CNC cutting machine
1. Gradual reduction method
The so-called gradual reduction method is to narrow the scope of shortcomings step by step by elaborating the shortcomings and judging the measurement parameters.
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Progressive method of robustness of automatic control cabinets – Reynolds
1. Appropriate working environment
1. The ambient temperature is suitable
All manufacturers have certain rules for active temperature control cabinets. The PLC promises that the ambient temperature is usually about 0 to 55 ° C, so during the equipment process, this heating element is not placed in the PLC; The PLC should have adequate ventilation and ...
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Reynolds inverter control panel and code function description
1. Clarification of the function of the control panel
1. FUN button; Press the FUN button to enter the settings menu F00;
2. Press and hold the up or down button to scroll to the code you need to set;
3. At this moment, press the FUN button to confirm, and adjust the entry parameters to the required value;
4. After the adjustment is completed, ...
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Advantages of the inverter vector control system - Reynolds
Dynamic "fast response" DC motors are rectified constrained and excessively high di/dt is not allowed. The asynchronous motor is only constrained by the capacity of the inverter, and the multiple of the forced current can be very high, so the speed echoes quickly, generally reaching the millisecond level, which has surpassed the DC motor in terms of speed.
At low frequencies ...
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"RNB6000 frequency conversion governor" was included in the National Torch Program
Recently, in the "2012 National Torch Program Project" issued by the Ministry of Science and Technology of the People's Republic of China, the "RNB6000 Frequency Conversion Governor" independently developed by Reynolds was included in the "2012 National Torch Program Project" with its domestic leading skills and efficient energy-saving conversion power.
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Inverter power modification method - Reynolds
1. Yaskawa inverter G5-G7 power correction: enter the menu and then return to 02-04 after A01=4 is the power data, and the factory voltage of rehabilitation has also changed after the change.
2. Sanken inverter IHF-IPF-SHF series: enter the CD900 parameter and enter 365 to confirm (change 2 times...
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Characteristics of isolation transformer at the input end of AC power supply - Reynolds
a。 When the third harmonic and disturbance signals are severe, a barrier transformer can be used to eliminate the third harmonic and disturbance signals.
b。 The use of barrier transformers can generate new neutrals and avoid the abnormal operation of equipment due to defective neutrals in the grid.
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Reynolds-5G empowers the paper industry to improve quality and efficiency of the industrial IoT control system
From September 23rd to September 25th, 2020, the 2020 China International Paper Technology Exhibition was held in Hall D1 of Suzhou International Expo Center.
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Inverter breakdown factor – Reynolds
1. Overpressure leads to brake pipe breakdown.
The so-called overvoltage of the inverter refers to the fact that the inverter voltage composed of various reasons exceeds the additional voltage, which is reflected in the DC voltage of the inverter DC bus.
Overvoltage alarm generally appears when the machine is shut down, and its main ...
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Introduction to soft starters and their relationship with frequency converters - Reynolds
When the high-power motor starts, the current is large, which will cause the grid voltage to be seriously shaken, in order to deal with this problem, the general requirements for speed regulation are not high, and the soft engine can be used to reduce the voltage and start. However, the drop in the starting current when the step-down is started will also make the starting torque drop significantly.
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