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…
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…
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…
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…
Grounding transformers are used to obtain a neutral when an existing delta-connected or ungrounded systems are to be grounded. These transformers provide a path for the flow of fault currents…
Time-delay fuses can provide overload and short circuit protection while overcoming momentary current spikes. They are used for the protection of motors and transformers. The time-delay characteristics of these fuses…
Below is the list of the most important interview questions on Modbus: 1. What is Modbus and how does it work? Modbus is an application layer-level communication protocol that defines…
The AC contactors differ from the DC contactors in their construction, arc extinction, and usage in a circuit. In this article, let us discuss the major differences between AC contactors…
A resonant grounded system can significantly reduce the ground fault currents. This grounding system basically consists of a tuned reactor connected between the neutral and the ground that resonates with…
In a reactance grounded system, the neutral is connected to the ground through an inductance (inductive reactance). The magnitude of the ground fault current can be limited to a value…