Confusion with the nameplate of an induction motor
$begingroup$
Regarding the below nameplate of an induction motor:
What is meant by?:
Δ/Y
220/380
Does that mean if delta connected the line to line voltage must be 220V? Im confused also because isnt 220 phase voltage and 380 lne voltage? Could you explain this question with diagram?
motor induction
asked 1 hour ago
user1999user1999
370312
$endgroup$
|
show 1 more comment
$begingroup$
Regarding the below nameplate of an induction motor:
What is meant by?:
Δ/Y
220/380
Does that mean if delta connected the line to line voltage must be 220V? Im confused also because isnt 220 phase voltage and 380 lne voltage? Could you explain this question with diagram?
motor induction
asked 1 hour ago
user1999user1999
370312
$endgroup$
$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago
|
show 1 more comment
$begingroup$
Regarding the below nameplate of an induction motor:
What is meant by?:
Δ/Y
220/380
Does that mean if delta connected the line to line voltage must be 220V? Im confused also because isnt 220 phase voltage and 380 lne voltage? Could you explain this question with diagram?
motor induction
asked 1 hour ago
user1999user1999
370312
$endgroup$
Regarding the below nameplate of an induction motor:
What is meant by?:
Δ/Y
220/380
Does that mean if delta connected the line to line voltage must be 220V? Im confused also because isnt 220 phase voltage and 380 lne voltage? Could you explain this question with diagram?
motor induction
motor induction
asked 1 hour ago
user1999user1999
370312
asked 1 hour ago
user1999user1999
370312
asked 1 hour ago
user1999user1999
370312
asked 1 hour ago
user1999user1999
370312
asked 1 hour ago
user1999user1999
370312
370312
$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago
|
show 1 more comment
$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago
$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago
|
show 1 more comment
2 Answers
2
active
oldest
votes
$begingroup$
If you take the ratio of line voltage to the phase voltage for a 3 phase system supply you get $sqrt3$ = 1.732. Now 380 divided by 220 is 1.727 (about 0.3% off from perfect) so this informs that if the windings are Y connected, each winding receives 220 volts from a 380 volt 3 phase supply.
Try this picture of a 120 volts/208 volt set-up: -
answered 54 mins ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
|
show 1 more comment
$begingroup$
simulate this circuit – Schematic created using CircuitLab
Figure 1. Two connection methods.
The windings on your motor can take 220 V between their terminals.
- On a 220 V 3-phase supply you connect as shown in Figure 1b.
- On a 380 V 3-phase supply you connect as shown in Figure 1a.
Note that in each case the voltage across each winding is 220 V while the voltage between the supply terminals may not be.
It is simple trigonometry to show that the 380 V phase to phase voltage is $ sqrt 3 V_{p-n} $.
answered 50 mins ago
TransistorTransistor
86.4k784185
$endgroup$
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
If you take the ratio of line voltage to the phase voltage for a 3 phase system supply you get $sqrt3$ = 1.732. Now 380 divided by 220 is 1.727 (about 0.3% off from perfect) so this informs that if the windings are Y connected, each winding receives 220 volts from a 380 volt 3 phase supply.
Try this picture of a 120 volts/208 volt set-up: -
answered 54 mins ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
|
show 1 more comment
$begingroup$
If you take the ratio of line voltage to the phase voltage for a 3 phase system supply you get $sqrt3$ = 1.732. Now 380 divided by 220 is 1.727 (about 0.3% off from perfect) so this informs that if the windings are Y connected, each winding receives 220 volts from a 380 volt 3 phase supply.
Try this picture of a 120 volts/208 volt set-up: -
answered 54 mins ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
|
show 1 more comment
$begingroup$
If you take the ratio of line voltage to the phase voltage for a 3 phase system supply you get $sqrt3$ = 1.732. Now 380 divided by 220 is 1.727 (about 0.3% off from perfect) so this informs that if the windings are Y connected, each winding receives 220 volts from a 380 volt 3 phase supply.
Try this picture of a 120 volts/208 volt set-up: -
answered 54 mins ago
Andy akaAndy aka
243k11182417
$endgroup$
If you take the ratio of line voltage to the phase voltage for a 3 phase system supply you get $sqrt3$ = 1.732. Now 380 divided by 220 is 1.727 (about 0.3% off from perfect) so this informs that if the windings are Y connected, each winding receives 220 volts from a 380 volt 3 phase supply.
Try this picture of a 120 volts/208 volt set-up: -
answered 54 mins ago
Andy akaAndy aka
243k11182417
edited 51 mins ago
answered 54 mins ago
Andy akaAndy aka
243k11182417
answered 54 mins ago
Andy akaAndy aka
243k11182417
answered 54 mins ago
Andy akaAndy aka
243k11182417
243k11182417
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
|
show 1 more comment
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
51 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
50 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
No, if you operate in delta your line voltage is 220 volts because the coils are placed directly across pairs of lines. In star, to get the same 220 volts across each winding, you have a line voltage of 380 volts.
$endgroup$
– Andy aka
49 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
47 mins ago
|
show 1 more comment
$begingroup$
simulate this circuit – Schematic created using CircuitLab
Figure 1. Two connection methods.
The windings on your motor can take 220 V between their terminals.
- On a 220 V 3-phase supply you connect as shown in Figure 1b.
- On a 380 V 3-phase supply you connect as shown in Figure 1a.
Note that in each case the voltage across each winding is 220 V while the voltage between the supply terminals may not be.
It is simple trigonometry to show that the 380 V phase to phase voltage is $ sqrt 3 V_{p-n} $.
answered 50 mins ago
TransistorTransistor
86.4k784185
$endgroup$
add a comment |
$begingroup$
simulate this circuit – Schematic created using CircuitLab
Figure 1. Two connection methods.
The windings on your motor can take 220 V between their terminals.
- On a 220 V 3-phase supply you connect as shown in Figure 1b.
- On a 380 V 3-phase supply you connect as shown in Figure 1a.
Note that in each case the voltage across each winding is 220 V while the voltage between the supply terminals may not be.
It is simple trigonometry to show that the 380 V phase to phase voltage is $ sqrt 3 V_{p-n} $.
answered 50 mins ago
TransistorTransistor
86.4k784185
$endgroup$
add a comment |
$begingroup$
simulate this circuit – Schematic created using CircuitLab
Figure 1. Two connection methods.
The windings on your motor can take 220 V between their terminals.
- On a 220 V 3-phase supply you connect as shown in Figure 1b.
- On a 380 V 3-phase supply you connect as shown in Figure 1a.
Note that in each case the voltage across each winding is 220 V while the voltage between the supply terminals may not be.
It is simple trigonometry to show that the 380 V phase to phase voltage is $ sqrt 3 V_{p-n} $.
answered 50 mins ago
TransistorTransistor
86.4k784185
$endgroup$
simulate this circuit – Schematic created using CircuitLab
Figure 1. Two connection methods.
The windings on your motor can take 220 V between their terminals.
- On a 220 V 3-phase supply you connect as shown in Figure 1b.
- On a 380 V 3-phase supply you connect as shown in Figure 1a.
Note that in each case the voltage across each winding is 220 V while the voltage between the supply terminals may not be.
It is simple trigonometry to show that the 380 V phase to phase voltage is $ sqrt 3 V_{p-n} $.
answered 50 mins ago
TransistorTransistor
86.4k784185
edited 14 mins ago
answered 50 mins ago
TransistorTransistor
86.4k784185
answered 50 mins ago
TransistorTransistor
86.4k784185
answered 50 mins ago
TransistorTransistor
86.4k784185
86.4k784185
add a comment |
add a comment |
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$begingroup$
The motor can be configured to run on different voltages by changing the way its windings are connected internally. If it's delta-connected, it needs a 220 volt three-phase line-to-line voltage, whereas if it's wye-connected, it needs a 380 volt three-phase line-to-line voltage.
$endgroup$
– Hearth
1 hour ago
$begingroup$
But where on earth line to line is 220V? In USA it must be sqrt(3)*220 = 190V and in Europe is 380V. Where do you think 220V line to line come from?
$endgroup$
– user1999
57 mins ago
$begingroup$
Actually, the common industrial three-phase voltages here in the US are 120V/208V, 230V/400V, 240V/415V and 277V/480V. There are supposedly also 347V/600V systems, but I've never seen one.
$endgroup$
– Hearth
52 mins ago
$begingroup$
@Hearth We use 347/600V in Canada. It's commonly found in places where you would se 277/480V in the US. I don't think anywhere in the US uses 347/600V.
$endgroup$
– J...
14 mins ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
8 mins ago