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  • Dual control of energy consumption turns to dual control of carbon emissions

    Dual control of energy consumption turns to dual control of carbon emissions, what should I do?

    Zhao Yongzhan, President of ABB Electric China, was invited to deliver a keynote speech at the "2022 China Automation + Digital Industry Annual Conference"

    ABB's digital energy management system provides technical support for the transition from "dual control" of energy consumption to "dual control" of carbon emissions

    Electrification, digitization and automation are key measures to achieve carbon neutrality

    In the first year following the publication of the 2030 Sustainability Strategy, ABB's products, services and solutions have helped customers reduce their emissions by 11.5 million tonnes of CO2 equivalent. ABB's goal is to support its customers in reducing emissions by more than 100 million tons of carbon dioxide equivalent annually by 2030, equivalent to the annual emissions of 30 million gasoline-powered vehicles.

    At the "2022 China Automation + Digital Industry Annual Conference" held in Beijing on August 26, Zhao Yongzhan, President of ABB Electric China, was invited to participate in the annual conference in view of the positive role that innovative technologies will play in achieving the goal of carbon neutrality. He gave a keynote speech on "Digitalization Empowers the Low-Carbon Transformation of Industries", expounding how ABB balances the relationship between clean, low-carbon, safe and reliable, and low-cost, and uses leading digital technology to meet the needs of local customers for high-quality development and low-carbon transformation. Demand, provide industrial solutions covering electrical, process automation, motion control, robotics, and help Chinese industrial enterprises on the road to sustainable development.

    As the pillar of China's economic and social development, industry is a "large energy user" and a "large carbon emitter". Since last year, power generation and electricity consumption in some regions have been unbalanced, and orderly electricity consumption has been implemented. In the face of dual control of energy consumption and tight power supply, how to help enterprises achieve low-carbon transformation while ensuring stable economic development. Previously, the government work report also mentioned the orderly promotion of carbon peaking and carbon neutralization, and the transition from "double control" of energy consumption to "double control" of total carbon emissions and intensity.

    Zhao Yongzhan, President of ABB Electric China, said that helping enterprises to improve energy efficiency from the demand side through innovative technologies of "digitalization + electrification + automation" and realizing a larger proportion of clean energy replacement from the supply side are not only the key to reducing energy costs for enterprises, but also It is also an important measure to promote carbon reduction in the industrial sector.

    "Digitalization + electrification + automation" on the demand side is the key and difficult point of development. Different from the relatively standard design and professional operation and maintenance of the "transmission, transformation and distribution" of the power system, the production environment and development level of various industries on the demand side vary greatly. Modular, multi-category equipment is required to realize the measurable, optimized, and controllable energy system, and a flexibly arranged management platform is required to realize the coordinated regulation of energy and production.


    ABB provides ZEE600, a digital energy management platform, to technically find a way to save energy and reduce carbon emissions, help companies build smart energy industrial parks, realize the overall layout of a low-carbon energy system, support the access and complementation of multiple energy sources, and provide high-resilience power supply; , through intelligent prediction and precise regulation and control technology of source, network, load and storage, realize energy saving and emission reduction in the park, help enterprises to deeply integrate green manufacturing and intelligent manufacturing, and practice the road of low-carbon development; and support multi-level regulation to achieve distribution Cross-system coordination and linkage of electricity, HVAC, and buildings can reduce the cost of energy use. In Tianjin Nestle Purina Pet Food Co., Ltd., the ABB ZEE600 platform is used, which provides three-in-one functions of asset health management, power monitoring management and energy efficiency management.

  • ABB motor brand introduction

    ABB motor brand introduction

    The ABB motor is produced by ABB Group, which is an internationally renowned brand. The headquarters of ABB Group is located in Zurich, Switzerland, and was established in 1988. Its predecessor is Asea (Sweden) and Brown Boveri & Ci (Switzerland) two companies, of which Asea's history can be traced back to 1883.


    ABB motors are Swiss brands
    ABB Group, a Swiss brand, is one of the world's top 500 companies and enjoys a good reputation the world. It has thousands of companies in more than 100 countries and involves many industries, such as manufacturing, processing, consumer goods, public utilities, oil, and gas, etc. Its China branch factory is located in Shanghai. Its two cores are power technology and automation technology. ABB has 23 branches, sales offices in China, and 27 joint ventures and wholly-owned companies, with more than 6,500 employees in China alone. The main business in China: a complete series of power transformers and distribution transformers, high, medium, and low voltage switches, electrical drive systems, and motors.

    Word of mouth of Abb motors
    As an international well-known brand, ABB has a good reputation both at home and abroad. At present, it has a high market share in the world, and its reputation is one of its advantages. The abb motor is a large motor, and it is usually customized. The only fly in the ointment is that it is expensive because of its brand effect, which is twice as expensive as the ordinary motor. It has a relatively long life and a beautiful appearance. There are lubricating nozzles at the front and rear ends near the bearing for easy filling of lubricating oil.

    Advantages of Abb Motors
    1. It can operate stably in the area that is prone to an explosion in the factory

    2. Wider application range, standard dual-bandwidth voltage design

    3. The shell is made of high mechanical strength materials and uses a fully enclosed air-cooled structure, which is safe and reliable.

    4. The selected cast iron material is of high quality, and reasonable maintenance can prolong the service life of the motor

    5. Better energy-saving effect

    6. Wide voltage, up to 690V, can be applied to 50Hz and 60Hz power grid

    7. Adopt imported insulating materials with the latest technology, which can reach F-class insulation (B-class-80K temperature rise), and the winding life is longer

    8. The bearing has a high bearing capacity, and the motor can maintain a long life after being resistant to environmental corrosion.

    9. Overall lower noise level.

    At present, abb has a lot of OEMs in China, and there are many problems. Many people want to find a replacement motor. In fact, abb is not completely irreplaceable. There are many domestic and foreign brands producing Abb motors, as long as you verify the corresponding technical indicators and installation dimensions, and choose according to the corresponding specifications.

     

  • ABB Universal circuit breaker installation

    To be exact, since the universal circuit breakers are designed with a frame, they can be divided into two installation forms, both of which include a drawer type and a fixed type. Next, we will mainly talk about their respective installation methods and steps.

    I.Installation of drawer circuit breaker

     

    First of all, it should be in a vertical position and the universal circuit breaker should be manually moved to the disconnected position. At the same time, the switch of the body should be removed, and the drawer base should be fixed to the installation position of the switch cabinet with M10 screws, and then the circuit breaker should be installed. The main body switch is manually cranked to the connection position. Finally, the external connection busbar can be connected, but one thing to pay attention to is that when connecting, the busbar as a whole should be flat and not messy to ensure a good plane contact.

     

    II.Fixed circuit breaker installation

     

    First, use M10 screws to fix the main body switch of the universal circuit breaker to the installation position of the switchgear, and then make a reliable ground connection. There is a grounding symbol mark on the grounding screw.

     

    After the installation is completed, the circuit breaker needs to be wired according to the relevant wiring diagram, but the following items need to be tested before the main circuit is energized to ensure that it is correct.

    1.Check whether the state of the equipment is already in the energy storage position. Otherwise, it needs to be stored first by manual operation. Generally, the universal circuit breaker is basically in the energy storage state after leaving the factory.

     

    2.Then check whether the undervoltage, shunt release, closing electromagnet and electric operating voltage meet the required standards, and the equipment can only operate when the undervoltage release is closed.

     

    3.In addition, it is necessary to check whether the working power supply of the intelligent release meets the requirements, and whether the setting values ​​of the tripping currents such as Ir1, Ir2, Ir3, and Ir4 meet the actual application requirements.

     

    4.Finally, after the universal circuit breaker performs the closing action, whether it is a release device such as undervoltage and shunt, or the O button on the mask, or the trip test function on the intelligent release device, it can be cut off.

  • Common faults and troubleshooting methods of ABB universal circuit breakers
    1. It is necessary to regularly clean the dust of the insulation part of the circuit breaker body, so as to ensure that its insulation performance is always in a good state, which is conducive to daily work.

     

    1. When maintaining the universal circuit breaker, the contact system should be checked, and the smoke traces on the contacts should be wiped clean. If small metal particles are found on the contact surface of the contacts during the wiping process, it should be timely. Clean it up.

     

    1. Finally, since the circuit breaker is in the state of providing protection, it may be subject to short-circuit current. Therefore, in addition to the necessary contact system inspection, it is necessary to clean the smoke marks on both walls of the arc extinguishing cover. If the universal circuit breaker is extinguished If the arc grid is seriously damaged, replace the arc chute immediately.

    Common fault 1: The universal circuit breaker cannot complete the energy storage action

     

    Fault cause 1: It may be that manual and electric energy storage cannot be performed, because the energy storage device has a mechanical failure, and the power supply voltage controlled by the electric energy storage device is less than 85% Us.

     

    Remedy 1: If the universal circuit breaker cannot store energy manually, it is caused by the mechanical failure of the energy storage device, so it is recommended to contact the manufacturer for repair or replacement. If the electric energy storage is not possible, check whether the control power supply voltage of the electric energy storage device is greater than 85% Us first to ensure that the data is correct. On the contrary, if there is a fault, it can be determined that it is caused by a mechanical failure. It is also recommended to contact the manufacturer for repair or replacement.

     

    Common fault 2: The universal circuit breaker cannot perform the closing action smoothly

     

    Fault reason 2: It is very likely that the rated working voltage of the undervoltage release is less than 70% Ue.Of course, there are also certain cases that the release control unit has failed, and there is a reset on the intelligent release. There is no reset (that is, the red button sticks out of the panel). If it is a drawer-type universal circuit breaker, it is caused by poor contact of the secondary circuit, and the rated power supply voltage of the closing electromagnet is less than 85% Us. At the same time, the closing electromagnet fault has been damaged, and the mechanical interlocking action will open the circuit. The device is locked.

     

    Remedy 2: First, we can check that the power supply voltage of the undervoltage release must be greater than 85% Ue, and then replace the control unit of the release. Next, press the reset button to reclose, shake the drawer circuit breaker to the ON position and check whether the secondary circuit is energized, then check whether the power supply voltage of the closing solenoid is greater than 85% Ue, and finally replace the closing solenoid Iron and then check the working status of the two mechanically interlocked universal circuit breakers.

     

    Common fault 3: The universal circuit breaker cannot perform the breaking action.

     

    Fault reason 3: This phenomenon occurs due to mechanical failure of the operation, or the control power supply voltage of the shunt release is less than 70% Us, and it is very likely that the release is damaged.

     

    Troubleshooting method 3: Check whether the mechanical operating mechanism has any faults such as crushing and contact the manufacturer. At the same time, check whether the control power supply voltage of the shunt release is greater than 70% Us. If the above methods cannot solve the fault, then it is recommended. Replace the shunt release of the circuit breaker.

     

    Common fault 4: The crank handle of the drawer-type universal circuit breaker cannot be inserted into the equipment smoothly

     

    Fault reason 4: It may be that the guide rail or the main body does not fully enter the cradle.

     

    Remedy 4: Just push the guide rail and body to the end.

     

    Common fault 5: The screen of the intelligent release of the universal circuit breaker cannot display data

     

    Fault reason 5: The trip unit is not connected to the power supply.

     

    Remedy 5: Please check whether the electronic release has been connected to the power supply, if not, connect the control power supply immediately. Cut off the electronic release of the circuit breaker to control the power supply and then send the power supply again. If the fault still exists, it is recommended to contact the manufacturer.

     

     

     

    Common fault 6: The fault indicator of the universal circuit breaker is always on

     

    Fault reason 6: The overload fault L indicator is always on.

     

    Remedy 6: You can check the time of the breaking current action through the electronic release, and analyze the specific situation of the auxiliary power grid. If it is overloaded, it is recommended to find and eliminate the overload fault. If the universal circuit breaker does not match the actual operating current and the long-time delay operating current setting value, it is necessary to modify the long-time delay operating current setting value according to the actual operating current to properly match the protection, and then exclude The fault can also be taken by pressing the reset button to reclose the circuit breaker.

    Common fault 7: universal circuit breaker breaking fault indicator light is always on

     

    Fault reason 7: Ground fault tripping G indicator is always on.

     

    Remedy 7: Use the electronic release to check the breaking current value and operating time. If there is a ground fault phenomenon, it needs to be solved and eliminated immediately. On the contrary, if there is no ground fault, then the current setting value of the ground fault should be checked. match the actual protection. Then there is the possibility to modify the ground fault current setting value of the release, or to reclose the universal circuit breaker by pressing the reset button on the panel.

  • Development Trend of ABB's New Generation Molded Case Circuit Breaker Technology

    Some internationally renowned electrical companies began to develop a new generation of molded case circuit breakers in the mid-to-late 1990s. So far, the new generation of molded case circuit breakers has basically completed the replacement of old products. The comprehensive technical and economic indicators of the new generation of molded case circuit breakers have been greatly improved compared to the old products. The overall development idea is: to meet the needs of the entire power distribution system to the greatest extent, not to blindly pursue high indicators, and to consider the applicability, safety, reliability and economy of the system while improving the technical indicators. The new generation of molded case circuit breakers has a complete series of rated currents with adjustable rated currents. Together with frame circuit breakers, it can provide an overall solution for power distribution systems ranging from tens of amperes to several thousand amperes.

    ABB's Tmax T4 has a rated ultimate short-circuit breaking capacity of up to 200 kA. The rated operating short-circuit breaking capacity Ics of most of the frame grades of the new generation of molded case circuit breakers is the same as the rated ultimate short-circuit breaking capacity Icu, which greatly improves the reliability of short-circuit breaking.

     

    I.New double breakpoint contact system

    The double-breakpoint contact system adds a breakpoint, strengthens the near-cathode effect of the short arc, and has a higher arc voltage, which can improve the short-circuit breaking capacity. The system avoids soft connection or rotatable conductive connection in mechanical structure, improves mechanical and electrical reliability, and has been widely used in the new generation of molded case circuit breakers.

    The new double-breakpoint contact system generally adopts a rotary structure, and the fork-type double-breakpoint structure was also adopted in the early days. From a structural point of view, the torque generated by the repulsive force of the two breakpoints of the fork structure is asymmetrical, and the rotational frictional resistance is relatively large. Under the same conditions, the breaking speed is not as fast as that of the rotary structure. At the same time, the isolation of the arc extinguishing chamber between the two breakpoints of the fork structure is also difficult to achieve, and it is not easy to use the air pressure principle to improve the arc blowing capacity. Therefore, ABB also adopted the rotary double breakpoint structure when designing Tmax T4, T5 and T6.

     

    II.Moving contact stuck mechanism

    Molded case circuit breakers generally use the principle of current-limiting breaking, which uses the electric force generated by the short-circuit current flowing through the contacts to quickly repel the contacts, introduce arcs, and limit the rise of the short-circuit current. In order to prevent the contacts from re-closing when the AC current crosses zero, some circuit breakers have specially designed a blocking mechanism for the contacts to open, so that the contacts are stuck in the open position after the contacts are opened, and the blocking mechanism is not blocked until the operating mechanism moves. Unlock. The contact clamping mechanism and the fast-acting operating mechanism are used to control the breaking speed of the circuit breaker within a few milliseconds, which greatly improves the breaking speed.

     

    III.Closed contact arc extinguishing system The contact arc extinguishing system of the new generation of molded case circuit breakers basically adopts a closed design structure. The moving and static contacts and the arc extinguishing chamber are sealed together with arc-resistant plastic materials to form a closed formula structure. The new generation of molded case circuit breakers has two enclosed structures:

    1. The three-pole contact arc extinguishing system is enclosed in a housing, but each pole is completely separated, such as Moeller's NZM3.
    2. The contact arc extinguishing system of each pole forms a unit separately.

    Compared with the open structure, the closed contact arc extinguishing system has the following advantages:

    1. Prevent the metal particles generated during short-circuit breaking from splashing on the operating mechanism, causing the mechanism to be stuck or annealing the moving and static contact springs.
    2. Prevent the arc from blowing back and cannot enter the arc extinguishing chamber, which affects the short-circuit current breaking.
    3. The powerful airflow formed by the pressure generated by the arc in the closed space is used to accelerate the cooling and spraying of the arc, so that the arc is quickly extinguished.
    4. Use the strong airflow generated by the arc to accelerate the contact repulsion, or hit the tripping lever to make the mechanism move quickly to accelerate the arc extinguishing. The closed contact arc extinguishing system not only improves the short-circuit breaking capacity, but also can achieve Icu=Ics, which improves the reliability of short-circuit breaking.

    IV.Application of electronic trip unit in the new generation of molded case circuit breaker The electronic trip unit is a combination of microelectronics, computer and communication technology, and has the incomparable advantages of traditional thermal magnetic trip units.

    For example: stable tripping characteristics, not affected by ambient temperature and climate; high accuracy of tripping current and time; adjustable setting current, and different characteristic curves can be set to meet the requirements of various load protection; electronic tripping The controller can derive communication functions, realize networked control, and also derive auxiliary functions such as regional interlocking, power monitoring and power analysis. The new generation of molded case circuit breakers of various companies can be equipped with electronic trip units, and gradually develop to small-capacity rated current frames of 160 A and below.

    Due to economic reasons, at present, most of the company's molded case circuit breakers with a frame current of 160 A and below still use an adjustable thermal-magnetic release; the frame current of 250 A and above can be installed with an electronic release or a thermal-magnetic release. circuit breakers; large-capacity molded case circuit breakers with a frame current of 630 A or more than 800 A are generally designed to only install electronic trip units, but circuit breakers used in DC circuits still use thermal Magnetic release (such as ABB's TmaxT5 and T6 and Schneider's NS series, etc.).

    In recent years, there has been a new development in the electronic release technology of molded case circuit breakers. ABB has launched the PR223EF, an electronic controller beyond area selectivity, which perfectly combines the current limiting performance and selectivity of molded case circuit breakers.

    PR223EF can be installed on molded case circuit breakers of 250-800 A frame frame, the controller adopts Early Fault Detection and Blocking (EFDP) algorithm in the circuit to achieve fast zone interlocking, and can predict short-circuit current early within 300μs , and combined with the fast driving and breaking mechanism of the circuit breaker (the breaking time of the Tmax series is below 5 ~ 6 ms), the total tripping and interlocking time provided by the PR223EF is about 10 ms, so the molded case circuit breaker equipped with the PR223EF The device can achieve selectivity in the current range of 100 kA and below.

    V.Communication Molded Case Circuit Breaker

    The new generation of molded case circuit breakers using electronic trip units can derive communication functions to realize network control. Communication generally uses a separate communication adapter (or data management interface) to connect with the communication system. For example, Siemens VL series can be connected with computer through circuit breaker data adapter (BDA), connected with Ethernet through enhanced data adapter (BDA Plus), and connected with Profibus field bus through COM10Profibus module. Large companies often implement their own protocols when connecting communicable circuit breakers to fieldbus systems. Small and medium-sized companies do not have the ability to independently develop protocols, so they use public protocols of large companies or bus organizations.

    For example, Moeller's NZM series molded case circuit breaker uses a data management interface (DMI) and an interface module to connect with the bus system. DMI can display the measured current, fault current and circuit breaker status, etc. By replacing different interface modules, NZM can be connected with different bus systems such as Profibus and DeviceNet. The communication mode of the communication adapter used by the SA and CM1 series of molded case circuit breakers in my country is similar to the communication connection module used by Moeller. Circuit breaker is an economical, practical and flexible system access method, and is gradually recognized by small and medium-sized enterprises.

    VI.Modular structure design

    The structure of the new generation of molded case circuit breakers generally adopts a modular design. In addition to the closed contact system, the overcurrent release also generally adopts a modular design. The thermal magnetic release or the electronic release are designed with replaceable release modules, and the release can be easily replaced without opening the cover to meet the needs of various users and reduce manufacturing costs.

    VII.Expansion and Standardization of Annexes

    The new generation of molded case circuit breakers offers a wealth of internal and external accessories. The internal accessories all adopt the box structure, the user can replace the internal accessories without opening the cover, the installation is convenient, flexible and safe. Internal accessories tend to be standardized. In addition to the usual electric operating mechanisms, plug-in mounting bases and various operating handles, some companies' external accessories also provide accessories such as busbar connection and installation integrated adapters and flexibly installed interlocking mechanisms. Meet the requirements of standardized design of distribution cabinets.

    VIII.Ground fault protection function and residual current protection function The new generation of molded case circuit breakers using electronic release have ground fault protection function, and their characteristics are:

    1. Use an overcurrent transformer to detect the current signal.
    2. Use a microprocessor to process and calculate the current transformer signals of the phase line and the N line, and calculate the ground fault current. The ground fault operating current is 20% to 80% of the rated current, which is mainly used for the protection of phase line metallic ground faults.

    The new generation of molded case circuit breakers can provide residual current protection, generally in two ways:

    1. Circuit breaker with twin structure. Represented by Japan's Mitsubishi, Fuji and other companies, the built-in residual current module is adopted. Molded case circuit breakers and residual current circuit breakers have exactly the same appearance and installation dimensions, so they are called twin circuit breakers. This type of residual current circuit breaker is small in size and easy to replace.
    2. Assembled residual current circuit breaker. Represented by European companies such as Siemens, ABB, Schneider, etc., residual current modules are assembled on molded case circuit breakers to form residual current circuit breakers. The residual current module is supplied as an external accessory of the molded case circuit breaker. The residual current module and the circuit breaker can be assembled vertically (installed at the bottom of the circuit breaker) or horizontally (installed on the bottom side of the circuit breaker). Most of the residual current circuit breakers derived from the new generation of molded case circuit breakers are vertically assembled. In addition to AC type and A type residual current modules, B type residual current modules that can detect smooth DC currents, such as ABB's RC223 and Moeller's RCD modules, have also been developed in recent years. The molded case circuit breaker of type B residual current protection can operate correctly under the condition of AC fault current (including 1kHz and below AC fault current), pulsating DC fault current and smooth DC fault current. ABB's B-type residual current circuit breaker can also set the sensitivity for AC fault current of various frequencies to meet the needs of different frequencies of use.

    IX.Operating mechanism

    The quick action of the operating mechanism is essential to improve the breaking capacity. Comprehensive analysis of the operating mechanisms of each company shows that the basic structure is still a link mechanism with spring energy storage, but improvements have been made in the following aspects to improve the breaking speed and mechanical life of the mechanism:

    1. Significantly lengthen the size of the jumping buckle rotation axis to the end point of the locking surface, especially greatly lengthen the jumping buckle rotation axis to the jumping buckle and connecting rod pin axis size, and at the same time appropriately increase the energy storage of the spring . Once the jumping buckle is released, in the process of converting from the four-bar linkage to the five-bar linkage, the angular velocity of the upper link rotating around the axis of the jumping buckle and the rotation of the upper link and the connecting pin of the jumping buckle is increased. At the same time, the lifting force of the connecting rod to the moving contact opening is greatly improved, and the breaking speed is significantly improved.
    2. By simplifying the shape of each component of the mechanism and adding process holes, the quality of parts such as jumping buckles and connecting rods is reduced as much as possible, the motion inertia of the mechanism is reduced, and the breaking speed is increased.
    3. Improve the manufacturing process, ensure the dimensional accuracy and matching accuracy of the components, reduce the friction force and tripping force of the sliding parts, and improve the tripping speed of the mechanism.

    X.Using environmentally friendly materials, the new generation of molded case circuit breakers fully considers the protection of the environment in the entire process from design, manufacture to use, and prevents toxic and harmful substances from polluting the environment.

    The shell and contacts of the circuit breaker are generally made of recyclable and environmentally friendly materials (for example, the shell is generally made of halogen-free flame-retardant thermoplastic material, and the contact is made of silver-based alloy material that does not contain metal cadmium, etc.). In order to facilitate the recycling of resources, the type of material (such as PC, PA, etc.) is marked with a molded mark on the larger plastic parts such as the shell, so that the material can be classified and recycled during recycling. Except for the exposed conductive parts that still use electroplating coating, other internal conductive parts generally use bare copper as much as possible to reduce the pollution of electroplating to the environment.

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We accept all quantities even one piece that we would send for you. There are big stock these brands' parts in our warehouse and one or two pieces is not a problem for us. Of courser, the larger quantity, the better price. We suggest to order as more as possible.
Payment could be Telegraphic Transfer or Paypal Or credit card or even Alipay. We have over 30 years experience on international trade and lots of the payment we can accept. We will send you our accounts once you have make decision on which way will pay us.
Delivery way is by various ways such as by air, or by sea or door to door by courier. For small quantity, we suggest to send by air or by courier because the sea freight agents don't like small weight cargos over 100kg below. Also, the transport time is depends on the way that you choose and we will give you some advice when you have place orders.
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