How we check vector group for a Dyn1 transformer?
Answers were Sorted based on User's Feedback
Answer / s.ravindra
The condition of dyn1 was
(a) 1W2N+1U2N=1U1W
(b) 1W2W=1W2V
(c) 1V2W >1V2V
Is This Answer Correct ? | 14 Yes | 1 No |
Answer / gunasekaran
we can find out from ratio kit
if applied UV-vn get energised
if applied VW-wn get energised
if applied WU-un get energised
Is This Answer Correct ? | 11 Yes | 2 No |
Answer / vinod maurya
We will short 1U & 2U
And we will apply 3 phase voltage between 1U,1V,1W
Measure between
1U-1V
1V-1W
1W-1U
1V-2v
1V-2w
1W-2w
1W-2v
1W-2n
2n-1U
Verify The Condition
1W-2n+2n-1U= 1U-1W
1W-2w=1W-2v
1V-2v<1V-2w
vector group Dyn1 confirmed if the above conditions are
satisfied.
Is This Answer Correct ? | 8 Yes | 1 No |
Answer / y.rama krishna
Connect 1U&2U
Apply 3ph 415V balanced voltage across terminals 1U,1V,1W
(HV wdg)
Measure the voltages between the given terminals & record
1)1U-1V
2)1V-1W
3)1W-1V
4)1V-2V
5)1V-2W
6)1W-2V
7)1W-2W
8)1U-2N
9)1V-2N
Verify the conditions
a)1W-2W = 1W-2V
b)1V-2W = 1V-2V
c)1U-1V = (1U-2N)+(1V-2N)
vector group Dyn1 confirmed if the above conditions are
satisfied.
Is This Answer Correct ? | 18 Yes | 16 No |
Answer / mahmoud moustafa
The condition of dyn1 was
(a) 1W2N+1U2N=1U1W
(b) 1W2W=1W2V
(c) 1V2W >1V2V
this is correct I check today in one of GE sites
Is This Answer Correct ? | 2 Yes | 0 No |
What do you mean by the zone of protection?
kVA rating of open delta connected transformer is _____% kVA rating of delta/delta connection A 50 B 70.7 C 57.7 D 75.7
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
Difference between rating factor of cable and derating factor of cable?
why neutral wire thin than phase wire in 4pole conductor
In industries Power factor is maintained by installing a suitable KVAR bank, How is the PF maintained for domestic use, where is the capacitor bank connected
What will be the minimum megger value of 1700 KVA Transformer? a) Do megger value varies according to climate conditions and area . b) If megger value is 100 mega ohm is it good for new transfomer. Explain?
what is pure resistive circuit and pure inductive circuit
why transformer rating in KVA ?
8 Answers Bhel, TATA, Voltage,
in how many ways we can make induction motor to run in reverse direction?
The efficiency figures for energy efficient motors (in comparison with standard efficiency motor) can be generally higher by____%.
How to calculate u.p.s load parsentage plz give me formula