Ground potential rise
Ground Potential Rise (GPR) refers to the increase in electrical potential between the ground and a point of reference when a fault occurs on a power system. It is caused…
Differences between GTO and SCR
Gate turn-off thyristors (GTO) and Silicon controlled rectifiers (SCR) are semiconductor switching devices used in converters, rectifiers, charging circuits, etc. in order to control the current flow. This article illustrates…
Factors influencing requirements for a good grounding system
Grounding systems are required not only to ensure the safety of the personnel and the safe operation of equipment but also to protect the system from lightning and ensure accurate…
Gate turn-Off thyristor (GTO)
Symbol of GTO A gate turn-off thyristor (GTO) is three terminal semiconductor device - made up of four layers of alternating P-type and N-type material. Just like a conventional thyristor,…
What is a motor control center (MCC)?
Hundreds are electrical motors are used in modern-day industries for process automation and control. To control those motors, motor control centers or MCC panels are needed. They contain circuit breakers…
Methods of Ground/ Earth resistance measurements on existing systems
It is vital to maintain good ground in a system. In order to ensure that, ground resistance measurements and tests are conducted on existing earth electrodes at periodic intervals after…
Fall of potential method or 3-point method for Earth resistance measurements
The fall of potential method or 3-point method is the most commonly used method to measure ground resistance. It is used to determine the earth resistance of an existing grounding…
Soil resistivity measurement methods
One of the key elements affecting ground resistance is soil resistivity. Soil resistivity measurements are conducted before setting up an earthing system, in order to ensure an effective earthing. Good…
Power consumption and energy usage of humidifiers
Humidifiers are used to increase the humidity in a confined space. They can be used to humidify living rooms and ventilators can be used to treat dryness. A typical household…
Power consumption and energy usage of exhaust fans
A typical household exhaust fan consumes 40 watts of power. The energy usage of an exhaust fan purely depends on how many hours it spins. The energy usage of exhaust…