Dry Type Transformers - EDPN · 2015. 1. 10. · EDPN Technologies Pte Ltd 51 Bukit Batok Crescent #05-15 Unity Cent Singapore 658077 Tel: +65 67636511 Fax: +65 67646511 Web: Dry

EDPN Technologies Pte Ltd

51 Bukit Batok Crescent #05-15 Unity Cent Singapore 658077

Tel: +65 67636511 Fax: +65 67646511 Web: www.edpn.biz

Dry Type Transformers

Standard and K--Factor(K13)

High Quality Transformers in Singapore "

EDPN Technologies, along with our associate, manufacture and sale of

transformers, mainly dry type, with a wide and diverse areas ranging from electronic manufacturing, data centers, marine, petrol chemical industries

and offshore applications.

Through the years of dedication to this highly specialized field, our

company had acquired knowledge and experiences in this field.

We work with a variety of clients including engineers, architects, facilities personnel, and end-users and the Industries we serve include financial, education, manufacturing,

utility, communications, broadcasting, government and even retail.

Our Quality We, along with our associate, adopt strict quality assurance and control

measures in our manufacturing process to ensure consistency and reliability in our products and services to meet the needs and

requirements of our customers. We had also been awarded the IS0900

1:2000 Certification in design, manufacture and repair of transformers. Certified by DNV(Det Norske Veritas) Cert no. 3202-2007-AQ-SIN-RVA

We had achieved approvals from recognized international bodies from

ABS(American Bureau of Shipping), LR(Lloyd's Registrar), DNV, BV(Bureau Veritas) , NKK(Nippon Kaji Kyokai), RINA, GL(German Lloyd), RMRS and PSB

With our complete setup and quality assurance, we are flexible and capable to meet your special

requirements.




Why Choose EDPN transformers?

Our competitive advantage lies on

• Our vast experience in designing our transformer

• Employ various winding techiques to enhance reliability and improve heat dissipation

• Use of highest quality materials

• Full manufacturing facilites from core cutting, coil winding and vaccumm impregnantion

• Full quaility control in our transformer • Stringent testing procedure • Short leadtime

• ISO certified and manufactured in Singapore • After sales service

Manufacturing Facilities

Enclosure Manufacturing Termination Testing

Coil Winding Vacuum Impregnation Varnish Curing

Iron Core Stamping Core Stacking Core Insertion




High Grade Copper Windings

• Copper Strips with 200oC enameled coated from Invex,Italy. The copper conductors are fully sized, transposed and shaped to minimize Eddy current losses.

Insulation Materials

• Class H(NOMEX from Dupont) Insulation material is used between overlapping layers. • Axial channels are used between layers of primary and secondary winding to provide air gap for uniform

cooling. • High temperature tolerant fiberglass boards are used as bobbins to separate the core and windings. • Fully impregnated with class H varnish and oven dried.

Terminals • Tinned Copper Busbar (For 100KVA and above)

Protection Devices (Optional) • Thermal protection devices • Thermister (Normally Closed, activated at 160oC) • Digital Temperature Controller with 2 x Voltage Free contacts • Inrush Current Limiter (Available in Auto or Semi-Auto Type)

Testing Facilities

Temperature Controller,TR42

Our Materials

High Grade Iron Core

- High Grade, Cold rolled, Grain Oriented steel sheet with low specific losses, insulated on both sides by thin organic coating from Kawarin, Japan

10kVac Hi Potential Tester Milliohmeter Megger Induced Test Set(200Hz) Power Analyzer

Insulation Test at 1000Vdc and Hi-potential test at 3KV Induced AC Withstand Voltage Test Resistance Test Open circuit Test (No-load Test) Short circuit Test

Temperature Rise Test Noise Level Test




Our Transformer Construction

Our Complete System

Inrush Current Limiter Temperature Controller,TR42S1

/Semi Auto or Auto Type) For 3phase Monitoring

For Extra Safe Turn on TR42C 1 /Remote Monitoring)

200% Neutral Conductor

Tinned Busbar

High Grade Iron Core

Earth Stud

Electro-Static Shielding/Optional)

Axial Channels for better Ventilation & Isolate pri & sec

Parallel use of Enameled Coated Copper Strip

Fully impregnated varnish and oven dried.

Internally Gapped per turn winding For better Ventilation and prevent internal short circuit




Single Phase Isolated Transformers Electrical specifications Dimensions and Weights

Voltage Range Frequency

Insulation Class Standard Winding Material

Enclosure/ Colour

: < 500Vac : 50/60Hz : B or F : IEC 726 : Copper

: IP2 1 1 .5mm Galvanized Steel Plate/ Silver Grey 253

(1)Dimensions and weights indicated in the table above only apply to the transformers with electrical characteristics

shown in the previous table and subjected to minor

variation of ± 5%. (2) Please contact us if more detailed dimensions are required

(3) Dimensions are in mm

Transformer Size

Transformer Mounting

Casing Size

Casing Mounting

Weight(kg) Rate (VA)

Tx L D H A B Type L 1 L2 D H A B F Tx Tx +Case

6 A 70 36 55 62 0.2 12 A 77 40 62 67 0.4 24 A 93 55 76 82 0.8 36 A 93 66 76 82

0.9 50 A 106 66 85 93 1.0 1.8 60 A 106 71 85 93 1.2 2.0 80 A 112 71 97 107

A 105 146 105 105 131 64 5

2.4 3.2

100 B 96 89 107 80 70 2.6 3.6

150 B 96 100 107 80 80 3.2 4.2

200 B 105 105 112 88 86 4.2 5.2

250 B 114 100 116 96 76 4.7 5.7

300 B 114 110 116 96 86

A 130 176 145 142 163 79 5

5.4 6.4

350 B 133 99 135 11 2 80 6.3 7.5

400 B 133 104 135 11 2 85 6.9 8.0

450 B 133 104 135 112 85 7.3 8.4

500 B 133 117 135 11 2 95 8.0 9.1

600 B 133 128 135 112 104

A 178 222 155 169 207 106 5

9.1 10.1

700 B 152 116 152 129 94 9.5 12.2

800 B 152 131 152 129 108 11.8 14.5

1000 B 152 143 152 129 118 13.6 16.3

1200 B 171 148 171 143 113 15.1 17.8

1500 B 171 158 171 143 122

A 201 245 207 201 225 122 6

17.2 20.0

2000 B 181 168 171 152 134 20.7 24.2

2500 B 192 206 205 161 155 A 276 300 207 250 276 131 6

26.0 29.5

3000 B 192 215 205 161 161 A 323 350 208 300 323 133 6 31.5 35.0

Type L D H E A B F 3.5k B 228 195 225 191 148 B 346 275 342 50 200 245 6 32 39

4k B 228 195 225 191 148 B 346 275 342 50 200 245 6 36 43

4.5k B 228 210 225 191 160 B 346 275 342 50 200 245 6 40 47

5k B 228 210 225 191 160 B 346 275 342 50 200 245 6 43 50

6k B 228 240 225 191 200 B 346 275 342 50 200 245 6 52 59

7k B 228 240 225 191 200 B 346 275 342 50 200 245 6 60 79

7.5k B 240 250 330 200 140 B 350 350 455 75 200 300 11 64 71

8k B 240 250 330 200 150 B 350 350 455 75 200 300 11 68 75

10k B 250 250 350 200 160 B 350 350 455 75 200 300 11 80 100

15k C 250 280 400 200 190 B 350 350 530 75 200 300 11 120 160

20k C 320 250 480 200 185 B 450 400 650 100 200 350 11 180 200

25k C 320 300 500 200 195 B 450 400 650 100 200 350 11 200 230




3Phase Standard Isolation Transformers

electrical specifications dimensions and weights

Voltage Range

Frequency

Insulation Class Standard

Winding Material Connection

Enclosure/ Colour

:< 1 000Vac

:50/60Hz : F(Below 50KVA ); H(50KVA and Above) : EC 726 :Copper

: Delta-Star (Default)

: P2 1 1 .5mm Galvanized Steel Plate/Silver Grey 253

(1)Dimensions and weights indicated in the table above only

applytothetransformerswithelectricalcharacteristics shown in t hep r ev iou s t ab l eand sub jec t ed t om ino r

variation of ± 5%. (2) Please contact us if more detailed dimensions are required (3) Dimensions are in mm

Transformer Dimension Enclosure Dimension Capacity

KVA Weight

(Kg) L D H Terminal L D H C Case Type 5 70 330 220 300 Connector 450 350 450 75 A

10 110 360 230 350 Connector 450 350 510 75 A

15 150 400 250 400 Connector 510 350 510 75 A

20 180 450 280 420 Connector 560 360 580 100 A

30 220 480 280 450 Connector 610 420 660 100 A

40 250 480 300 480 Connector 610 420 660 100 A

50 280 550 350 530 Bolts 660 480 660 100 A

60 300 600 350 550 Bolts 660 480 660 100 A

75 360 650 350 600 Busbar 750 550 730 100 A

80 380 650 350 600 Busbar 750 550 730 100 A

100 480 680 400 650 Busbar 800 600 850 100 B

120 580 800 380 720 Busbar 950 600 950 100 B

150 700 800 420 750 Busbar 950 600 950 100 B

180 840 800 480 800 Busbar 1000 700 1000 100 B

200 890 800 500 800 Busbar 1050 800 1250 100 B

250 1100 850 500 850 Busbar 1100 800 1350 100 B

300 1300 900 550 850 Busbar 1200 800 1350 100 B

350 1450 950 500 900 Busbar 1200 850 1350 100 B

400 1650 980 500 950 Busbar 1280 850 1350 100 B

450 1800 980 550 950 Busbar 1280 850 1350 100 B

500 1950 1000 550 1000 Busbar 1400 900 1600 100 B

600 2100 1050 580 1000 Busbar 1400 900 1600 125 B

700 2300 1100 600 1100 Busbar 1500 900 1700 125 B

800 2700 1200 650 1300 Busbar 1500 900 1700 125 B

900 3100 1250 650 1400 Busbar 1600 950 1800 125 B

1000 3500 1350 700 1500 Busbar 1800 950 2000 125 B

Note 1: *Number of fans and lourves are added depending on the transformer capacity *Default Cable Entry: Bottom

Note 2: Additional Cost + Additional Feature such as MCCB, Indicating Light, Voltmeter, Ammeter, Temperature Controller, Thermistors etc

+ Zigzag connection, K Factor, Low inrush or special cabinet

+ Extra Tappings




Why use K-Factor transformers?

Harmonics are generated by the use of computers, servers and non-linear devices. These harmonics will cause

excessive heating and degrade the insulation materials in the transformer which eventually lead to transformer failure.

Determine K-Factor

Defination/ From UL 1561)

A rating applied to a transformer indicating its suitability for the use of non sinsodial loads. In other words,

Where

Ih/PU) is the rms current/in per unit) at harmonic,h h is the harmonic order

Harmonics Effects on Transformer

The presence of harmonics will cause the increase in losses and heating. They will incease both the load

loss/impedance loss) and no-load loss/excitation).

a) Load Loss

Load Loss includes skin effect, inceased winding eddy current/PEC),I2R/PDC) and stray losses/PoSL)

From IEEE C57-110, total load loss consist mainly winding eddy current loss, and I2R loss. Stray losses can be

neglected in dry type transformer

b) No Load Loss

No load loss is increased due increasing of hysterisis loss . The presence of harmonics increase the flux density and

the rate of change of core magnetization which result in increased of hyterisis loss.

In Our Design

In order to reduce the effects of harmonics, our K-Type Transformers ,DTKFTM series are specially designed

For Load Loss

• Parallel individual insulated copper conductors are used to reduce skin effect and eddy current losses

• Larger conductors are used to reduce I2R losses

• Static Shield between the PRI & SEC winding to reduce electrostatic noise caused by the harmonics

• Well ventilated by using axial channels and internally gapped per turn winding

• 200% neutral conductor to handle zero sequence currents flow

For No Load Loss

• To reduce hysterisis loss, our transformer is deisgned at a lower flux density

and use of high grade iron core.

For Low Inrush Current

• Deisgned at a lower flux density and use of high grade iron core with hgh

core saturation point.

• Primary winding is wound externally to increase the primary impedance path




Specifications - K 13

Rated Power (Kva) 40 60 70 80 100 120 180 200 250 300

Rated Primary Voltage 400Vac

Secondary Voltage (At No Load) 400Vac(230Vac-N) Neutral Conductor Size 200% bond to ground

Voltage Regulation < 2%

Input Voltage Tolerance +10% ie ( 0V to 440V)

Rated Current 58 87 101 115 144 173 260 289 360 433

Frequency 45-65Hz

Vector Group Dyn11(-30 deg Phase Shift) / Dzn0( Zero phase Shift)

Insulation Type H

Test Voltage 3kVac, 1 min

Enclosure Protection Degree IP21

Max Ambient Temperature(°c) 40

Max Allowable Temperature Rise(°c) 120

Approx Impedance Voltage (%) < 5

Standard in accordance IEC 60076-11 ; IEEE C57-110 ; UL1561

No-load Iron losses 250 350 400 450 600 750 900 1000 1100 1300 Approx

Losses (W)

°n-Load Copper losses 600 900 1100 1300 1500 1700 2800 3000 4500 5800

Specifications - K 13

Rated Power (Kva) 400 500 600 700 800 900 1000 1200 1500 2000

Rated Primary Voltage 400Vac

Secondary Voltage (At No Load) 400Vac(230Vac-N) Neutral Conductor Size 200% bond to ground

Voltage Regulation < 2%

Input Voltage Tolerance +10% ie ( 0V to 440V)

Rated Current 577 721 866 1010 1154 1300 1443 1732 2165 2886

Frequency 45-65Hz

Vector Group Dyn11(-30 deg Phase Shift) / Dzn0( Zero phase Shift)

Insulation Type H

Test Voltage 3kVac, 1 min

Enclosure Protection Degree IP21

Max Ambient Temperature(°c) 40

Max Allowable Temperature Rise(°c) 120

Approx Impedance Voltage (%) < 5

Standard in accordance IEC 60076-11 ; IEEE C57-110 ; UL1561

No-load Iron losses 1300 1500 1700 1850 1950 2050 2200 2500 3000 5000 Approx

Losses (W)

°n-Load Copper losses 5700 6800 7500 8500 11000 15000 18000 22000 28000 35000




Dimensions and weights

Enclosure Dimension Capacity KVA

Weight (Kg)

Fans Terminal Type W 1 W2 W3 D H 1 H2

40 300 No connector 300 400 650 500 100 650

60 400 No Connector 350 450 700 550 100 750

70 480 No Connector 400 500 750 550 100 750

80 550 No Bolts 560 660 900 600 100 900

100 600 No Bolts 560 660 950 600 100 950

120 700 2x 4" Busbar 560 660 950 600 100 950

160 800 2x 6" Busbar 600 700 1050 700 100 1150

180 950 2x 6" Busbar 600 700 1050 800 100 1250

200 1150 2x 6" Busbar 600 700 1100 800 100 1350

250 1400 3 x 6" Busbar 700 800 1250 850 100 1350

300 1600 3 x 6" Busbar 750 850 1300 900 100 1350

400 1800 4x 6" Busbar 850 950 1400 900 100 1500

500 2000 4x 6" Busbar 850 950 1400 900 100 1500

600 2400 4x 6" Busbar 900 1000 1600 1000 100 1600

700 2800 6x 6" Busbar 1000 1100 1700 1150 100 1600

800 3000 6x 6" Busbar 1000 1100 1800 1200 100 1600

900 3500 4 x10" Busbar 1000 1100 1800 1200 100 1700

1000 4000 6 x10" Busbar 1000 1100 2000 1300 100 1800

1200 4800 8 x10" Busbar 1000 1100 2000 1300 100 1900

1500 5400 8 x10" Busbar 1050 1150 2000 1400 100 2000

2000 5800 8 x 10" Busbar 1050 1150 2200 1500 100 2100

Winding Schematic

PRIMARY PRIMARY

1U 1V 1W 1U 1V 1W

SECONDARY SECONDARY

Vector Group : Dyn1 1 Vector Group : D~n)

2U 2V 2W 2N(200%) E 2U 2V 2W 2N(200%)

Documents

Dry Type Transformers - EDPN · 2015. 1. 10. · EDPN Technologies Pte Ltd 51 Bukit Batok Crescent #05-15 Unity Cent Singapore 658077 Tel: +65 67636511 Fax: +65 67646511 Web: Dry