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