TYPES OF TEMPERING OF ENERGY METER
Can a 150 kva 3 phase,440v/230v delta-wye connection stepdown transformer can be used in reverse as a step up tranformer ?
When we have earthing mesh or underground earthing network in industrial plants, weather we have NT-S or NT-C-S kind of earthing system, so eventually weather we must use 4 or 5 wire in 400 volt level (For example 3×150+70 mm2 or 5×150 mm2) in this connection I would like to know exactly the paragraph of IEC or IEEE number
What is the fuction of UV & how it works in circut breakers? is it one type of relay?
what is the diffrence between capasitor and battery?
when the diameter of the core and cable is doubled, the value of capacitance ?
What is the arc. I saw word arc in between sf6 & vcb brakers
What will hapen if we connect more capacitors than required for powerfactor control? Exactly what will be the effect on power system?
is the value of inductance depends upon the evalue of thitha in doubly excited machine?
I just purchased a 4 position cam switch to be used to operate a 3-speed blower motor. The motor is a 10 amp motor and has 3 wires that are used to control speed. The cam switch was rated at 660V 20 amps but when I received it, I noticed that it has AC-15 operational current rating (Ie) of 4/5 amps. If I am reading the label correctly. the 4/5 amps is related to 440v/220V (Ue). Other ratings are AC-3: 5.5A, AC2: 7.5A and AC-4: 1.5A. My questions are 1) Is it safe to use this switch with the motor I have 2) what is the difference between the 20 amp Ith ratting and the Ie operational ratings?
how to select a circuit breaker?
24 Answers ABB, BARC, TCS,
HOW TO CALCULATE THE APFC Panel Design
Define the "All - Day Efficiency" of a Transformer