Schneider Electric 9070 manual Selection Guide, Regulation Chart for Type T, Secondary Voltage

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Example:

This example assumes the following:

Two NEMA size 0 contactors do not start together, but one could be ON when the other starts.

One NEMA size 2 contactor can start with either of the other contactors.

One pilot light at 2 VA

1.VA and inrush are:

NEMA 0: sealed 27 VA; inrush 245 VA

NEMA 2: sealed 37 VA; inrush 311 VA; pilot light 2 VA

2.Total VA: 27 + 27 + 37 + 2 = 93 VA

3.Total inrush VA: 245 + 311 + 27 + 2 = 582 VA

4.From Regulation Chart for Type T at right below:

100 VA minimum unit; inrush 499 VA will not work at 90% 150 VA (next standard size); inrush 666 VA will work at 95%

Industrial Control Transformers

Type T Transformers

Selection Guide

1.Determine inrush and sealed VA of each coil in the control circuit and VA of all other components.

2.Total all sealed VA of all operating coils and other loads VA (determines minimal VA size required for the circuit).

3.Total the inrush VA of all coils that are starting at the same time and all loads and coils that are running (using the regulation chart to give possible units to be used).

4.Take VA size from step 2, go to standard VA size in chart below. Make sure inrush VA from chart is greater than total VA from step 3. If not, go to next larger VA size and repeat.

If your supply voltage is stable and fluctuates less than 5%, we recommend you use the 90% secondary voltage column. If your supply voltage is not stable and fluctuates more than 10%, we recommend you use the 95% secondary voltage column. We recommend that you never use the 85% secondary voltage column since magnetic devices lose life expectancy if they are continuously started at 85% of rated voltage.

Regulation Chart for Type T

 

 

 

Secondary Voltage

 

 

 

 

 

 

VA

Inrush UL VA at 20% Power Factor

Inrush UL VA at 40% Power Factor

 

 

 

 

 

 

 

 

95%

90%

85%

95%

90%

85%

 

 

 

 

 

 

 

50

193

266

339

151

215

282

 

 

 

 

 

 

 

75

271

396

520

210

318

430

 

 

 

 

 

 

 

100

339

499

659

266

404

549

 

 

 

 

 

 

 

150

666

893

1120

529

731

942

 

 

 

 

 

 

 

200

588

815

1041

459

659

866

 

 

 

 

 

 

 

250

1416

1910

2388

1057

1494

1936

 

 

 

 

 

 

 

300

1634

2184

2709

1194

1681

2169

 

 

 

 

 

 

 

350

1894

2592

3261

1392

2005

2621

 

 

 

 

 

 

 

500

3197

4104

4981

2374

3195

4019

 

 

 

 

 

 

 

750

3770

5515

7231

2887

4391

5945

 

 

 

 

 

 

 

1000

6587

9079

11430

4706

6886

9051

 

 

 

 

 

 

 

1500

19324

23983

28607

15066

19361

23756

 

 

 

 

 

 

 

2000

31384

38777

46161

24794

31630

38667

 

 

 

 

 

 

 

3000

26539

39934

52713

19355

30721

42216

 

 

 

 

 

 

 

5000

53111

85265

116277

39368

66309

93882

 

 

 

 

 

 

 

5

08/2005

 

 

 

© 1999–2005 Schneider Electric All Rights Reserved

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Contents Industrial Control Transformers Page Product Description Product DescriptionType T Transformers Type T TransformersCE Marking Type T VA RatingsSelection Guide Regulation Chart for Type TSecondary Voltage 95% 90% 85%Source Load Voltage Go To Codes Pages Type T Transformers for 120 Volt LoadsType T Transformers for 24 Volt Loads Custom-Built Type T TransformersOne Primary Tap Two Primary Taps Single DualVolt Control Secondary DimensionsVoltage and Connection Options VoltagesVoltages Connections Catalog Acc Slots Number1 Type T MultiTap TransformersConnections KeyVoltage Voltages Connections Volt SecondaryPrimary Secondary Universal120/240 Volt Secondary Type T Transformers with Dual SecondaryVoltage Voltages CatalogCatalog Acc Slots Number1 Key Catalog Acc Type T Transformers with 24 Volt SecondaryNumber1 Key 9070T50D19 Type T Units with Dual 12/24 Volt Secondary Amps Multiple SecondaryMultiple Secondary Only Type T Units with Dual 24/120 Volt Secondary Tapped Units120 Slots Only Catalog 115115V 24V Acc9070T50D114 B D a B 150 Exceed Primary Max 200 9070T200t 120 114 0PF 100% 75% 50% 25% 60HZ 50HZ Type T Performance DataWatts LoadType T Special Quote Request Sheet Type EO Transformers Regulation Chart for Type EOType EO Transformers Type EO VA RatingsType EO Transformers for 24 Volt Loads Type EO Transformers for 120 Volt LoadsCatalog Slots Number Voltage Voltages Catalog Slots Number19070EO17 t Voltages Connections Catalog Core Coil FL Total Reg Eff BTU/hr Type EO Performance Data0PF 100% 75% 50% 25% 60HZ Inrush x FL RMSClass 9070 Type EL, KL Transformers with LeadsTransformers with Leads Fuse Protection Matrix for Choosing Proper Fuse ConfigurationFuse Protection H3 H2 X2X1 H1H4 H1H4 H3 H2 Fuse Protection Options Description of Accessory KeysClass Type VA Accessory Key Description AccessoriesVA Accessory Key Fingersafe Covers not supplied with unitVolts Primary Fusing to Meet NECVolts Secondary Fusing to Meet NEC and CE Primary Fusing to Meet CERecommended Fuse Sizes for the Secondary to Meet NEC and CE Volts Secondary Fuse RatingVolt Control Secondary-Primary and Secondary Fuse Block Type TF Transformers9070TF25D20 Primary Fusing Field Installed Fuse OptionsField Installed Fuse Options R01A R01B Primary and Secondary Fusing R11A R11B R12A R12B Secondary Fusing S22A S22B SF25A SF25B AP1 AP2 Secondary Fuse Clips Jumper Fuse ClipTerminal Blocks Example of Series and Parallel Connections ApplicationApplication Example of a typical application SolutionTechnical Data Question Answer Frequently Asked QuestionsFrequently Asked Questions Selecting a 9070 Type T control transformer? Schneider Electric USA