Skip to main content

Posts

Showing posts with the label Electrical

Symbol Standart P&ID

    Symbol Standarisation P&ID For Industri Standard piping and instrument symbols are detailed diagrammatic documentation that provides a set of forms & standards for documenting P&IDs and PFDs, including standard shapes for instruments, valves, pumps, heat exchangers, mixers, crushers, vessels, compressors, filters, motors and other connection forms. Here are some symbols on P&ID : So, those are some of the symbols that we will often see when reading piping & instrument diagrams. May be useful.

Genset Heating Procedure

Genset Heating Standard Procedure Genset is one of the equipment that functions to convert mechanical energy or rotation of the rotor into electrical energy. The generator has two main parts, namely the motor generator and the generator engine (usually a diesel engine), both of which are connected by a shaft. The generator itself has two main parts, namely the rotor and stator. The stator is the stationary part, while the rotor is the rotating part. This generator works when the genset control panel receives input if the power source from PLN dies, then the PLC or ATS (automatic transfer switch) will give an order to the genset control panel to turn on the generator, this is done automatically. What if the generator has to be turned on manually, for example when heating the generator? Genset as one of the supporting utility facilities of a building must of course be maintained regularly, one of which is heating the generator as one of the genset maintenance procedures. To warm up the g...

Maintenance

Maintenance In the engineering we are certainly no stranger to this term, yes maintenance. Maintenance can be applied both in the industrial world (to maintain production machines and building utilities), construction (to maintain construction equipment) or even in household appliances. No machine or tool can work for a long time without proper maintenance. Well, in an industry, maintaining machines in good condition is very important. So what types of maintenance are there in an industry? And why is maintenance so important? Maintenance Definition Maintenance can be interpreted as the work of maintaining something (machine etc.) so that it is in good condition. As for maintenance or maintenance in industry is the practice of keeping equipment and machinery in good working condition for. Maintenance can produce a quality product. The purpose of industrial maintenance is to increase the life of industrial equipment, keep all plant assets in good condition at the lowest possible cost. In...

Neutral Ground Phase Difference

In electrical distribution systems, especially AC current for low voltage electricity, we often find terms around phase, neutral and ground. What is the difference between these terms? Let's discuss them one by one. Phase For low-voltage electric current, the term for low-voltage phase is divided into 2, namely phase voltage 380 V and voltage 220 V. Before we discuss further about low voltage, let's first discuss what a phase is. Phase is part of the conductor or conductor of electricity that contains voltage. The difference between the 380 V and 220 V voltage is that if the 380 V voltage uses 3 conducting wires or other terms 3 phases, the 220 V voltage only uses 1 conductor cable or other terms 1 phase. The voltage of 380 V is obtained from measurements between phases with other phases, while the voltage of 220 V is obtained from measurements between phases and neutral. This measurement is carried out using a multitester. The 3 phase system was developed because it has the ad...

Grounding System

Grounding Have we known what a grounding or grounding system is? Grounding or grounding system is a safety system in the electricity distribution network to eliminate potential differences by draining the residual current from leakage voltage or excess current to earth. If this grounding system does not exist in an electrical network, it will pose a hazard to the safety of humans and equipment and the electrical service system itself. This grounding system connects electrical equipment and objects that have the potential to conduct electricity with the earth. This grounding system is an essential system of an electrical network system itself because with this grounding system, electricity can be distributed properly. Grounding System Purpose This grounding system has the following objectives: - Connect device with earth - Conveys lightning or other electrical charges to the earth - Prevent potential differences from occurring safely - Distributes fault current to ground - Prevents the ...

Temperature Transmitter Working Principle

Temperatur Transmitter As instrument engineers, we are already familiar with this one device, yes, the temperature transmitter. What is a temperature transmitter? A temperature transmitter is a device used to monitor temperature, usually in a stream or enclosed space. The way it works is by sending a temperature measurement signal from the sensor to be sent to the temperature control or temperature indicator. The signal from the sensor is converted by the controller at the transmitter into a 4020 mA signal. This signal will be sent to the I/O or PLC for further processing. There are 2 types of temperature sensors, including: 1. RTD RTD or resistence temperatur detector works based on the resistance of the material that changes with temperature. An example of a device is the PT100. PT100 is an RTD made of platinum with a reference of 100 ohns = 0 degrees Celsius. 2. TC TC or thermocouple works based on 2 pieces of conductor wire of different materials whose ends are joined together. The...

Types and Kinds of Electric Welding Machines

Types and Kinds of Electric Welding Machines Welding is a method of joining metal materials by heating the metal until it reaches the melting temperature of the material and then it is desired and becomes one part. In carrying out this process, you can use added ingredients or fillers or it can also be without added ingredients. There are various kinds and types of electric welding machines, in this post we will discuss them one by one. 1. MMA MMA stands for manual metal arc or often also called stick welding. We often encounter this type of welding machine in general, usually welding workshops on the roadside use a lot of this type of welding machine. This welding machine uses a welding wire or electrode in the form of a stick. This type of welding machine is a type of welding machine that uses a transformer and inverter to convert the AC input voltage into DC voltage. This DC voltage will be used to carry out the welding process. The way this welding machine works is by colliding pos...

Difference Between MCB And MCCB

Difference Between MCB And MCCB Maybe we've often heard the terms MCB and MCCB, but do we know the difference between MCB & MCCB? 1. Current Rating The first difference is in the current rating, for MCB the current rating is only up to about 63A, while for MCCB it can be up to 1000A or more. So the usage is different, yes, if the MCB is usually used for small loads or loads, while the MCCB is usually used for large loads. 2. Price The second is the issue of price, MCB is much cheaper than MCCB. 3. Trip Level The third is from the trip level, if the MCB trip level is fixed, namely at the maximum current capacity listed on the MCB body, while the MCCB trip level can be adjusted. 4. Interupting Capacity The fourth difference is the interrupting capacity, the interrupting capacity itself is the maximum limit for the resistance of the current that passes through the MCB or MCCB, meaning that if there is a current that exceeds the interrupting capacity limit, the MCB or MCCB will be ...

Why Humans Can Get Electrocuted

What are the causes and how does the human body feel when electrocuted? In previous posts we have discussed a lot about electricity, but have we ever thought what would happen if the human body was electrocuted and what causes the human body to be electrocuted? Many conclude that our bodies contain a lot of water so that our bodies can be good conductors of electricity and where our bodies hit the electrical wires when our feet touch the ground we will be electrocuted or electrocuted. But actually this is a somewhat wrong opinion, when our feet are not on the ground, we can still be electrocuted if we come into contact with a power source. So what causes our bodies to be electrocuted? Another opinion states that the human body contains neutral voltage electricity, for example when we connect an electrically charged cable or phase with a neutrally charged cable, a short circuit will occur. Similar to the human body, a neutrally charged human body when in contact with a power source will...

Basic Electronic Formulas

Basic Electronic Formulas Calculating Electric Power Here are some formulas that we can use to calculate electrical power: P = V x I .............................................................................................(1) P = I²  x R ...........................................................................................(2) P = V² /  R ...........................................................................................(3) Des : P = Power (watt) I  = Current (A) R =  Resistent (Ohm) V = Voltage (V) Formula number 1 can be used to find power if the voltage and current are known. We can use formula number 2 to find power with known resistance and current. We can use formula number 3 to find power if we know the voltage and resistance. Problem example1 : The above is an example of a series circuit, calculate the total power? Answer :  Is known : R1 = 1 ohm R2 = 3 ohm R total = R1 + R2 = 1 ohm + 3 ohm = 4 ohm V = 6 V Asked : P = ... ? Answer : P...

AC Current And DC Current

Knowing AC Current & DC Current 1. AC Current AC current or alternating current is an alternating current in which electrons move back and forth (not in the same direction). If we visualize then the electron will move forward to a point and then return to the previous point after that it moves backwards and returns to its starting point. AC current voltage for home and industry has 2 types of voltage, 1 phase & 3 phase. 1 phase voltage has 1 phase flow and 1 neutral flow, while 3 phase voltage has 3 phase flows (R, S, T) and 1 neutral, neutral flow. AC Current AC current forms a sine wave where the voltage or current moves to its peak and then drops down to the negative area and then back again, because the electrons move back and forth then there is a time when the electrons are at the 0 volt point. If in the example with a light bulb, the voltage will rise to its peak and the bulb will light up to a maximum then the voltage will drop to a point of 0 volts and the lamp will tu...

Electronic Components

Electronic Components Based on Output Response to Input Based on the output response to the input, electronic components are divided into 2, namely active components and passive components. Passive components are components that cannot amplify and rectify electrical signals and can convert one form of energy into another. Active components are components that can amplify and rectify electrical signals and convert energy from one form to another. Examples of passive components are: 1. Resistor Resistor is an electronic component that limits / inhibits electric current. Because it cannot amplify, the resistor is a passive component. Resistor 2. Capasitor Capacitors are electronics that store electrical energy, can block DC component currents and AC currents. The working principle is almost the same as the battery except that the battery can store more electric charge and less charge. The advantage of an excess battery is that it releases the energy in it faster. In the market there are 2...