In addition to the general protection, backup impedance protection or distance protection is also used in Generator, Transformer & Reactor to protect during external faults…
ELECTRICAL IQ
The main difference between earthing and grounding is that – Under Earthing, the circuit is physically connected to the ground to flow circulating current or…
Floating neutral is a condition, in which the neutral wire of any circuit is disconnected from the ground. In AC system, the neutral wire is…
Volts and amps (ampere) are the two different measures of Electricity. In a close circuit, the electric potential difference between two points is called Voltage…
AC or Alternating current is an electric current that continuously changes its magnitude with time and periodically reverses its direction. In Direct Current or DC,…
OLTC stands for On-load tap changer which is used in Transformer to regulate the output voltage. OLTC is installed inside the transformer main tank. It…
mAh stands for milli Ampere hour which defines the total capacity of current a mobile battery can deliver in an hour time. To express the…
DGA (Dissolved Gas Analysis) is an important tool for checking the healthiness of oil-filled power transformers. Power Transformer is important and expensive equipment in Power…
When the voltage goes higher than the rated voltage is called Over Voltage. It is a very common issue in Power systems. System voltage is…
After opening the Circuit Breaker under load or fault condition, a transit voltage appears across the breaker contacts which is called Restriking Voltage. Frequency of…