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 7 hours ago
user1999user1999
380312
$endgroup$
|
show 6 more comments
$begingroup$
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 7 hours ago
user1999user1999
380312
$endgroup$
1
$begingroup$
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
7 hours 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
7 hours ago
1
$begingroup$
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
7 hours 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...
6 hours ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
6 hours ago
|
show 6 more comments
$begingroup$
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 7 hours ago
user1999user1999
380312
$endgroup$
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 7 hours ago
user1999user1999
380312
asked 7 hours ago
user1999user1999
380312
asked 7 hours ago
user1999user1999
380312
asked 7 hours ago
user1999user1999
380312
asked 7 hours ago
user1999user1999
380312
380312
1
$begingroup$
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
7 hours 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
7 hours ago
1
$begingroup$
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
7 hours 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...
6 hours ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
6 hours ago
|
show 6 more comments
1
$begingroup$
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
7 hours 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
7 hours ago
1
$begingroup$
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
7 hours 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...
6 hours ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
6 hours ago
1
1
$begingroup$
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
7 hours 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
7 hours 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
7 hours 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
7 hours ago
1
1
$begingroup$
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
7 hours 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
7 hours 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...
6 hours 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...
6 hours ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
6 hours ago
$begingroup$
Who uses 220V line to line? please someone tell me:(
$endgroup$
– user1999
6 hours ago
|
show 6 more comments
3 Answers
3
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 7 hours ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours 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 7 hours ago
TransistorTransistor
86.4k785185
$endgroup$
add a comment |
$begingroup$
It is actually quite simple.
It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star.
This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. In either case the the winding gets 220 volts supply. By connecting this type a motor in delta with line voltage 380 will burn the motor!
When the line voltage is 380V and you want to connected it to delta then the motor nameplate should state Δ/Y 380/660.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
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 7 hours ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours 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 7 hours ago
Andy akaAndy aka
243k11182417
$endgroup$
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours 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 7 hours 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 7 hours ago
Andy akaAndy aka
243k11182417
edited 7 hours ago
answered 7 hours ago
Andy akaAndy aka
243k11182417
answered 7 hours ago
Andy akaAndy aka
243k11182417
answered 7 hours ago
Andy akaAndy aka
243k11182417
243k11182417
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours ago
|
show 1 more comment
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours ago
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
Oh I got it very clear now thanks.
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
But dont you think they wrote in wrong order on the name plate?
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours ago
$begingroup$
They wrote Δ/Y 220/380 but shouldnt it be more correct Δ/Y 380/220 ??
$endgroup$
– user1999
7 hours 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
6 hours 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
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours ago
$begingroup$
Hmm I guess I need to think about it more
$endgroup$
– user1999
6 hours 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 7 hours ago
TransistorTransistor
86.4k785185
$endgroup$
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 7 hours ago
TransistorTransistor
86.4k785185
$endgroup$
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 7 hours ago
TransistorTransistor
86.4k785185
$endgroup$
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 7 hours ago
TransistorTransistor
86.4k785185
edited 6 hours ago
answered 7 hours ago
TransistorTransistor
86.4k785185
answered 7 hours ago
TransistorTransistor
86.4k785185
answered 7 hours ago
TransistorTransistor
86.4k785185
86.4k785185
add a comment |
add a comment |
$begingroup$
It is actually quite simple.
It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star.
This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. In either case the the winding gets 220 volts supply. By connecting this type a motor in delta with line voltage 380 will burn the motor!
When the line voltage is 380V and you want to connected it to delta then the motor nameplate should state Δ/Y 380/660.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
It is actually quite simple.
It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star.
This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. In either case the the winding gets 220 volts supply. By connecting this type a motor in delta with line voltage 380 will burn the motor!
When the line voltage is 380V and you want to connected it to delta then the motor nameplate should state Δ/Y 380/660.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
add a comment |
$begingroup$
It is actually quite simple.
It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star.
This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. In either case the the winding gets 220 volts supply. By connecting this type a motor in delta with line voltage 380 will burn the motor!
When the line voltage is 380V and you want to connected it to delta then the motor nameplate should state Δ/Y 380/660.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
It is actually quite simple.
It the nameplate states Δ/Y 220/380 this means that this motor is designed and can be connected in delta, if the line voltage is 220 volts. If the line voltage is 380 V then the motor can be connected in star.
This comes from the fact, that the the max allowed voltage per motor winding is 220 volts. In either case the the winding gets 220 volts supply. By connecting this type a motor in delta with line voltage 380 will burn the motor!
When the line voltage is 380V and you want to connected it to delta then the motor nameplate should state Δ/Y 380/660.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 5 hours ago
intzintz
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 5 hours ago
intzintz
112
answered 5 hours ago
intzintz
112
112
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
intz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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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.
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– Hearth
7 hours ago
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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?
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– user1999
7 hours ago
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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.
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– Hearth
7 hours ago
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@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.
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– J...
6 hours ago
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Who uses 220V line to line? please someone tell me:(
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– user1999
6 hours ago