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Is specialized in designing, manufacturing for power transformers ,furnace transformers and reactor.

Type WST5 Three Phase Off Load Tap Changer (delta connection) 1
Type WST5 Three Phase Off Load Tap Changer (delta connection) 2
Type WST5 Three Phase Off Load Tap Changer (delta connection) 3
Type WST5 Three Phase Off Load Tap Changer (delta connection) 1
Type WST5 Three Phase Off Load Tap Changer (delta connection) 2
Type WST5 Three Phase Off Load Tap Changer (delta connection) 3

Type WST5 Three Phase Off Load Tap Changer (delta connection)

Type WST5 three phase tap changer (delta connection)

- Used in mineral oil or silicon oil

- Rated Voltage 10KV-36KV

- Rated current from 63A-250A

- Tapping position: 3-7

- Regulation 2.5% per position

 

Model Explanation 
WST □ - □/□-□╳□
W: off-circuit
S : three-phase or D for single phase
T : linear type tap changer
□: voltage regulation model
□: rated current
□: rated voltage
□: number of tapping heads
□: number of tapping position

Voltage Regulation Model
I : terminal point
II : central point
III : neutral point
IV : Y-△ conversion
V : series-parallel connection

Our Advantage

* High pressure capability
* Strong anti-aging ability
* Strong anti-lightning impact
* Strong protection
* Use smoothly
* Stable use

 

Number of
positions
Rated
voltage
Rated
current
L L1 L2 L3 L4 L5 H H1   φD1 Regulating
position
3 10 kV 63A 362 139 122 59 99 24 100 78 90 Neutral
point
125A 394 149 133 59 107 29 100 78
250A 394 149 133 59 112 29 100 78
24 kV 63A 362 139 122 59 99 24 120 98
125A 394 149 133 59 107 29 120 98
250A 446 169 144 59 112 34 120 98
36 kV 63A 362 139 122 59 103 24 140 118
125A 424 159 143 59 107 34 140 118
250A 424 159 143 59 112 34 140 118
5 10 kV 63A 506 187 170 59 99 24 100 78
125A 568 207 191 59 107 29 100 78
250A 568 207 191 59 112 29 100 78
300A 628 227 211 59 112 34 106 78   105
24 kV 63A 506 187 170 59 100 24 120 98 90
125A 568 207 191 59 107 29 120 98
250A 628 227 211 59 112 34 120 98
36 kV 63A 506 187 170 59 103 24 140 118
125A 628 227 211 59 107 34 140 118
250A 628 227 211 59 112 34 140 118
7 10 kV 63A 650 235 218 70 110 24 100 78
125A 742 265 249 70 118 29 100 78
250A 742 265 249 77.5 123 29 100 78
9 63A 796 283 267 70 110 24 100 78

 

 

 

Number of
positions
Rated
voltage
Rated
current
L L1 L2 L4 L5 H H1 H Regulating
position
3 10 kV 63A 450 174  145   99 24  180 78 70 Central
125A 519 201  172  107 29  180 78 70
250A 519 201  172  112 29  180 78 70
300A 620 242  189  112 34  185 78 70
36 kV 63A 486 194  145  103 24  210 98 80
125A 571 222  177  107 29  210 98 80
250A 571 222  177  112 29  210 98 80
5 10 kV 63A 594 222  193   99 24  180 78 70
125A 693 259  230  107 29  180 78 70
250A 693 259  230  112 29  180 78 70
300A 824 310  257  112 34  185 78 70
36 kV 63A 630 240  195  103 24  210 98 80
125A 745 280  235  107 29  210 98 80
250A 745 280  235  112 29  210 98 80

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    As a professional power transformer manufacturer with 20 years of experiences, NINGBO VILLE ENTERPRISE is a combination of Transformer R&D center, production, sales and after sales service, possesses of strong technical strength and excellent manufacturing equipments, as well as modern Office facilities.
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