Answer Posted / arun r
VECTOR GROUP TEST [For 3Ф Transformer Only]
1. HV Side RФ & LV -1 r Ф Short Provide.
2. 3 Phase 4 Wire Supply Applied In HV
Side.
3. For Following Voltages Measured Are In
Volts
RY YB BR RN YN BN
ry yb Br rn yn bn
Rr Ry Rb Yr Yy Yb
Br By Bb Nr Ny Nb
Rn Yn Bn Nn
VECTOR GROUP = Dyn5
PROOF
1. Ry=Rb 3.Br<Bb
2.By<Bb
4.Yy=Yb
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
how to select battery for 15 KVA UPS with formula
What is the meaning of Insulation H for transformers????
temp of cast resin 1500kva tx formerwent up to 138.c but came down very fast to about 100.c within 20 mins when load was reduced from 70% to 60%
what kelvin's law ?
what are the pecularity of shaver sockets ?
If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?
When color of silica gel will gets change from blue to pink from Top to bottom?
I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.
why current is constant on d.c?
What is Control & Relay Panel? And Remote Control Center?
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
1)how to reduce the value of tan delta of trasformer and CB,bushing,CT&PT,CVT ? 2)how to reduce the resistance of CB contact and its operating time? 3)plz.....send me the project report on conditioning and monitoring of substation equipment on my email id (gusaiyogendra03@gmail.com)
Define de-sensitivity?
What is the requirement of grounding the neutral of single phase generators on load? If the neutral is not grounded, what will be the effect?
please send me last 5 year interview questions
