Dear All,
i need your help to decide the rating of three-phase autotransformer for below mentioned loads,
Supply voltage : 3-phase+N, 415V.
Basic M/C Load : 3-phase, 415V, 3.42kW
|
Device |
Ratings (kw) |
phase |
|
Heaters Zone-1 |
2.3 |
3phase,415V |
|
Heaters Zone-2 |
0.6 |
3phase,415V |
|
power supply |
0.12 |
2phase,415V |
|
Inverter |
0.4 |
3phase,415V |
|
Total load(kw) |
3.42 |
Optional M/C load : 1-phase, 230V,
|
Device |
Ratings (kw) |
phase |
|
Trimming unit |
0.66 |
single phase,230V |
|
blower |
2 |
single phase,230V |
|
Total Load(kW) |
2.66 |
Total Machine Load= Basic machine + Optional units
=3.42+2.66
=6.08kW
incomming only 3-phase,3-wire system with no neutral.
secondary is star connected 3-phase,4 wire system with autotransformer star point as neutral.
what will be the effect of unbalanced load and neutral floating on loads?
For this machine i require two Autotransformers one is only for basic M/C load(3.42kW,3-phase,415V) and the other is for basic M/C with optional M/C loads(3.42kW,3-phase,415V, + 2.66kW,1-phase,230V).
Autotransformer tapings: -20V, 0V, 20V, 200,230,400V, 460V, 550V, 600V
i kindly request you to please send the required ratings of Autotransformers for both the machines.
Auto Transformer Rating
Re: Auto Transformer Rating
