i have ht transformer of 142 kva with air cooled facility,having secondary voltage 7850volt, and secondary connected full way bridge rectifier .i faced the problem repeatedly that transformer one coil and rectifier diode of two phase was burnt two times. i checked all the secondary ckt. no any short ckt found,then what will be the cause side
Answer Posted / sanjayjssate
First open all the cables and take megger of all cables , there must be some earthed cable which is causing this problem.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is meant by time harmonics and space harmonics?
tell me about eletrical contractor
1.what is the reason for transformer and lightning arrester blast in 33kv system
how to electrically make connection to ferroli GN2N?
What are root loci?
how electrical earthing maintenance done in industry?
1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.
what is the Connected Load (kW) or Contract Demand (kVA)of mahindra nasik plant??
how to find three phase complex power in per unit and MVA?
can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?
How vfd saving power.
how generator avr give to the input?
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
What are the types of piano switches?
any application of back emf