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Texas Instruments’ regulator features active output circuitry making it an excellent Zener diode replacement in many...
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Here comes the New Year! As 2019 is coming to an end, it is time to take a glimpse at what was, but more importantly to look forward to what... Read more
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This marvelous innovation with great features and benefits is not just a boon for novice DIY programmers, but also an example of AI put to the right use. It is quite fascinating to come up with an electronics DIY project idea and envision its benefits for solving a simple yet compelling problem. But when it […]
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Such technologies as artificial intelligence, Big Data, machine learning and robotics, if implemented properly, can make the Indian waste management sector much more efficient Waste management is the generation, prevention, monitoring, treatment, handling, reuse, etc of solid waste. There are various types of solid waste including municipal, agricultural, hazardous, household and so on. Waste is […]
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technoblogy.com published another in detail project. This time is an eight-character alphanumeric LED display with an...
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A version of the Lisp programming language for Serpente ARM board. This is a version of...
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As we forge ahead in a world with exploding growth in devices, network configuration and change management (NCCM) becomes crucial for ensuring uptime and integrity of networks. In today’s IT environment, organisations are expanding geographically at a great pace. This has resulted in an exponential increase in the size as well as complexity of networks. […]
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If you take a look at the past, you must notice that power system was much cleaner and straightforward. Most loads were primarily linear in nature. Linear loads draw the... Read more
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This project describes an Arduino-based wireless frequency meter designed to measure frequency of sinusoidal AC signals in the range of 50Hz to 3kHz. The authors’ prototypes of the transmitter and receiver sides are shown in Figs 1 and 2, respectively. The block diagrams of the transmitter and receiver sides are shown in Figs 3 and […]
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This article will analyse a real example of electrical switchboard for potable water well pump, containing soft starter as one of major components. Besides explanation of wiring diagram and working... Read more
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Imagine an organisation devoid of threat from automation, where humans and robots complement each other on the workfloor and take productivity to the next level! The result is an exponentially profitable business! Pradeep David, general manager – South Asia, Universal Robots, in an interaction with Baishakhi Dutta, assures that this is no more a dream. […]
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This is a simple portable rain and steam detector in one circuit. It is compact in size, runs on 9V battery and is easy to assemble. Circuit and working The circuit diagram of the portable rain and steam detector is shown in Fig. 2. It is built around transistor T1, piezo buzzer PZ1, 9V battery […]
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Merry Christmas and Happy Holidays to all!
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When it comes to build an energy efficient pumping system, the selection of the right motor control system is necessary for your pump.
Pump controllers are designed to monitor flow and/or level variables and control the connected pump accordingly to efficiently maintain the levels. Considering the need of farmers, C&S Electric introduces a smart pump controller that has been design using modern technologies to save energy and time – helping farmers lead a better quality of life. This newest addition to the already extensive line of C&S pump panels has been manufactured especially for the agricultural industry. The pump controller is a perfect fit for irrigation and similar pumping applications.
The Smart pump controller having remote pump ON/OFF facility using SMS, IVRS and Missed-Call based on model. Smart controller panel monitors the pump parameters like phase-phase voltage, current, kW, kWh, power factor etc. This smart controller panel protects the pump motor from overload, dry run, phase unbalance, current unbalance, phase fail, rotor lock etc. All these parameters’ daily log makes it useful to monitor the efficiency and power consumption of the pump motor.
Smart pump controller has a facility of four real time based ON/OFF timers; and the dry run auto start timer. This is a very useful facility for farmers as there is no need to START/STOP the pump motor manually.
Smart pump controller has facility to add/delete its user via SMS, so that registered users can START/STOP remote pump and also get present running status of pump.
Smart pump controller has a unique facility of motor theft detection. This panel monitors the motor terminals continuously. If any one of the motor terminals is removed, an alert SMS is sent to the user. If this panel is shifted from installed location, an alert SMS is sent to the user with LAT/LNG position of the panel.
The post Pump Controller: Choosing the Appropriate Motor Control System for your Pump appeared first on C&S Electric Blog.
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Mornsun illustrated EMC diagnostic skills through some case analysis to help engineers with identifying common pitfalls It shared the breakthrough achievements of Mornsun’s new generation DC/DC power supply modules It also explored some latest issues in the power solutions field and discussed approach to achieve reliable power performance Mornsun Guangzhou Science & Technology Co., Ltd., […]
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A flip flop is an electronic circuit with two stable states that can be used to store binary data. The stored data can be changed by applying varying inputs. Flip-flops and latches are fundamental building blocks of digital electronics systems used in computers, communications, and many other types of systems. Flip-flops and latches are used […]
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Engineers can check a solid-state drive’s (SSD’s) health condition using self-monitoring analysis and reporting technology (SMART) tool. If the SSD or data get corrupted, they can try to recover the data. C.S. Ma, chief technical officer, Phison Electronics Corp., discusses the technologies, encryption techniques, protocols and data protection mechanisms for SSDs with Deepshikha Shukla. Q. […]
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Contactors and Control relays are electrically operated switches used for switching of loads and for controlling the electrical circuit respectively. Generally the medium of quenching of arc is air, so they are called air break contactors & air break control relays. Since both he switches are used in same control panel, so it is confusing for the people to understand the difference between a contactor and control relay.
So what’s similarity between a Contactor and a Control Relay?
Contactor and Control Relay work on same principle. They are basically electrically operated solenoid switches that are designed for the switching or control the loads. Moreover, both of them are constructed in a similar way:
What’s the difference between a Contactor and a Control Relay?
The key difference between control relays and contactors is the rating of current that they are designed to handle. Contactors are used for loads that have comparatively higher currents and higher system voltages.
Here’s a brief definition of Contactor & Control Relay that will help you understand the key difference between the two:
Control Relay: It is a device through which contacts in one circuit are operated by an alteration in conditions in the same circuit or in associated circuits.
Contactor: It is a device which is used for repeatedly establishing and interrupting an electric circuit under normal conditions.
Below table illustrates four major differences between a Contactor and a Relay:
Criteria | Control Relay | Contactor | |
---|---|---|---|
1 | Size of the Device | Control Relays are comparatively smaller or same in size (upto contactor rating of 12A) | Contactors are larger in size when compared to Control relays |
2 | Current Switching Capacity | Control Relays are generally classified as carrying loads of 10A or less | A Contactor would be used for loads greater than 10A |
3 | Application | Control Relay is more commonly used in control circuits which are single phase circuits. | Contactors are typically built for switching 3-phase load. |
4 | Auxiliary Contacts | A Control Relay consists of at least two NO/NC contacts | A Contactor consists of a minimum one set of three phase power contacts and in some cases additional in built auxiliary contacts are also provided. |
5 | Open/Closed Contact Standards | Control Relays can and often are both Normally Open and/or Normally Closed depending on the desired function. | Contactors, on the other hand, are almost exclusively designed to operate with normally open (Form A) contacts. |
6 | System Voltage | Control Relays are usually rated to only 250V | Contactors are commonly rated for up to 1000V |
Below are some other criteria that really differentiate the two devices:
Safety Features
Choosing Between Contactors and Control Relays for Application
When selecting between a contactor and a Control relay; always consider some crucial points.
When to Use a Control Relay | When to Use a Contactor | |
---|---|---|
1 | 10A or less current | 9A or more current |
2 | 1 phase | 1 or 3 phase |
3 | Up to 250VAC | Up to 1000VAC |
At C&S Electric, we design and manufacture robust and versatile range of contactors and Control relays that are designed using modern technologies to deliver complete protection and safety with long mechanical and electric life. We offer a range of high reliability Contactors and Control Relays including RobusTa Contactors & Overload Control Relays, Mini Contactor, D-Range Contactors, 2 Pole & 4 Pole Contactors, exceeD Contactors, Robusta2 Contactors, Capacitor Duty Contactors and Definite Purpose Contactors.
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In 2020, there will be increased interest surrounding the integration of deep learning into communications systems. Yet despite a heightened desire from the wireless industry to apply deep learning or AI, this will remain in the exploratory and research phase for the time being. Deep Learning in Communications Remains in a Nascent Stage Over time, […]
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