K coefficient transformer,Control harmonic thermal effect

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K coefficient transformer

Designed and manufactured according to American standards, can effectively ensure the reliable operation of the isolation transformer

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商品描述

Designed and manufactured according to American standards, can effectively ensure the reliable operation of the isolation transformer

K coefficient transformer technical parameters

Capacity

1KVA-3000KVA

Voltage level

AC1140V and below

Input voltage

Allowable ±10% fluctuation in rated voltage

Insulation resistance

DC 500V≥100MΩ

Output voltage

Rated voltage within the load range ±2-3℅

Insulation class

H class

Frequency

50Hz/60Hz

Ambient temperature

—15°C--+45°C

K coefficient

Regular K=4 Other value custom

Magnetizing current

≤7Ie

Dielectric strength

4200V/10mA/60s

Relative humidity

＜95℅

Load performance

Can withstand 3 times instantaneous current when continuous 100c/o full load

Temperature rise

＜100K

Waveform distortion

No additional waveform distortion

Noise

＜55db

Specification model

Model

Rated Capacity

Rated input

Rated output

Reference Size

Reference weight

（KVA）

Line/phase voltage（V)

Line/phase voltage（V)

Width X deep X height（mm）

（KG）

Three phase

SGB-3

3

AC1140V/660V
And below

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

AC3000V/1720V
And below

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

325×120×260

32

SGB-5

5

325×145×260

40

SGB-10

10

340×200×330

60

SGB-15

15

420×240×390

90

SGB-20

20

420×250×410

110

SGB-30

30

420×350×410

130

SGB-40

40

480×300×460

170

SGB-50

50

650×400×540

210

SGB-60

60

650×420×540

230

SGB-80

80

650×380×600

320

SGB-100

100

650×400×600

380

SGB-120

120

800×450×600

420

SGB-150

150

850×380×780

500

SGB-180

180

850×380×780

550

SGB-200

200

850×430×780

620

SGB-225

225

855×435×780

680

SGB-250

250

860×440×780

730

SGB-300

300

870×445×780

820

SGB-400

400

890×450×780

950

SGB-500

500

1050×600×1200

1300

SGB-600

600

1100×700×1200

1500

SGB-800

800

1120×750×1200

1800

SGB-1000

1000

1150×800×1200

2100

single-phase

DGB-1

1

Phase voltage

AC1140V

And below

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

Phase voltage

AC3000V

And below

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

　

165×140×140

12

DGB-2

2

200×130×210

16

DGB-3

3

200×140×210

18

DGB-5

5

210×170×280

28

DGB-8

8

210×190×300

36

DGB-10

10

210×220×300

43

DGB-12

12

240×170×380

47

DGB-15

15

250×180×380

55

DGB-20

20

250×220×380

77

DGB-25

25

250×230×440

100

DGB-30

30

250×230×550

120

DGB-40

40

260×250×550

140

DGB-50

50

330×240×550

170

DGB-60

60

330×280×550

210

DGB-80

80

330×320×550

260

DGB-100

100

340×320×550

300

DGB-120

120

440×400×600

360

DGB-150

150

450×420×600

410

DGB-180

180

560×440×780

470

DGB-200

200

580×445×780

520

Note: The above is a regular model, EECTECH can customize special specifications according to customer requirements.

For more information, please contact EECTECH

1. When there is harmonic component in the power system and user load, the harmonic voltage will generate additional harmonic current components in the isolation transformer coil, which will overload the isolation transformer and over-temperature operation, reducing the operating life of the isolation transformer, even for a short time. The internal combustion is destroyed; the K-factor isolation transformer is based on the user's power supply quality and harmonic components in the load. The nonlinear load is fully considered in the design, and the influence of harmonics on the performance of the iron core and the coil is considered comprehensively. Ensure reliable operation of the isolation transformer.

2. The K-factor is a general measure of the harmonic heating effect, especially for harmonics on transformers. It not only emphasizes the harmonic frequency, but also emphasizes the harmonic order, harmonic spectrum distribution and spectrum ratio. K-factor transformer standard specifications There are K-4, K-13, K-20, K-30, etc.; K-13 is a common rating for office load and general machine room load, K-20 tends to special computer load, IT data center and power quality Sensitive device PDU (Power Distribution Unit), etc. The K-factor transformer is designed to control the harmonic thermal effect. Specially designed products can filter out the triple harmonics. Products with a dual output phase difference of 30 degrees can filter out the five, seven, seventeen, and nineteenth harmonics. .

3. K-factor transformers are generally prohibited from using low-temperature conductors such as wire-wrapped wires in the selection of materials. Enamelled copper wires or NOMAX copper wires above 180 °C should be used to prevent wires from being caused by higher harmonics as much as possible. The internal skin effect produces local high temperature damage to the insulating layer, causing insulation breakdown to damage the transformer. The K-factor transformer is designed to minimize the thermal effect, which can be achieved by optimizing the coil design, the thickness-to-width ratio of the wire gauge, and the number of coils connected in parallel. K-factor transformer design impedance must choose the appropriate impedance value, use low-loss ultra-thin silicon steel sheet and the magnetic density should be lower than the design value of ordinary transformer, the process can strengthen the structural strength, reduce the thermal effect damage of the transformer zero-sequence current at the neutral point. , high frequency thermal add-on effect and thermal add-on effect of the output side winding.

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Capacity	1KVA-3000KVA	Voltage level	AC1140V and below
Input voltage	Allowable ±10% fluctuation in rated voltage	Insulation resistance	DC 500V≥100MΩ
Output voltage	Rated voltage within the load range ±2-3℅	Insulation class	H class
Frequency	50Hz/60Hz	Ambient temperature	—15°C--+45°C
K coefficient	Regular K=4 Other value custom	Magnetizing current	≤7Ie
Dielectric strength	4200V/10mA/60s	Relative humidity	＜95℅
Load performance	Can withstand 3 times instantaneous current when continuous 100c/o full load	Temperature rise	＜100K
Waveform distortion	No additional waveform distortion	Noise	＜55db

Model		Rated Capacity	Rated input	Rated output	Reference Size	Reference weight
Model		（KVA）	Line/phase voltage（V)	Line/phase voltage（V)	Width X deep X height（mm）	（KG）
Three phase	SGB-3	3	AC1140V/660V And below	AC3000V/1720V And below	325×120×260	32
	SGB-5	5			325×145×260	40
	SGB-10	10			340×200×330	60
	SGB-15	15			420×240×390	90
	SGB-20	20			420×250×410	110
	SGB-30	30			420×350×410	130
	SGB-40	40			480×300×460	170
	SGB-50	50			650×400×540	210
	SGB-60	60			650×420×540	230
	SGB-80	80			650×380×600	320
	SGB-100	100			650×400×600	380
	SGB-120	120			800×450×600	420
	SGB-150	150			850×380×780	500
	SGB-180	180			850×380×780	550
	SGB-200	200			850×430×780	620
	SGB-225	225			855×435×780	680
	SGB-250	250			860×440×780	730
	SGB-300	300			870×445×780	820
	SGB-400	400			890×450×780	950
	SGB-500	500			1050×600×1200	1300
	SGB-600	600			1100×700×1200	1500
	SGB-800	800			1120×750×1200	1800
	SGB-1000	1000			1150×800×1200	2100
single-phase	DGB-1	1	Phase voltage AC1140V And below	Phase voltage AC3000V And below	165×140×140	12
	DGB-2	2			200×130×210	16
	DGB-3	3			200×140×210	18
	DGB-5	5			210×170×280	28
	DGB-8	8			210×190×300	36
	DGB-10	10			210×220×300	43
	DGB-12	12			240×170×380	47
	DGB-15	15			250×180×380	55
	DGB-20	20			250×220×380	77
	DGB-25	25			250×230×440	100
	DGB-30	30			250×230×550	120
	DGB-40	40			260×250×550	140
	DGB-50	50			330×240×550	170
	DGB-60	60			330×280×550	210
	DGB-80	80			330×320×550	260
	DGB-100	100			340×320×550	300
	DGB-120	120			440×400×600	360
	DGB-150	150			450×420×600	410
	DGB-180	180			560×440×780	470
	DGB-200	200			580×445×780	520