It is mainly used in power supply places where AC 50-60Hz and input voltage does not exceed AC1140V. It is widely used in high-speed rail, subway, high-rise buildings, airports, stations, terminals, enterprises and tunnels, etc., which need to change voltage and safety isolation.
It is mainly used in power supply places where AC 50-60Hz and input voltage does not exceed AC1140V. It is widely used in high-speed rail, subway, high-rise buildings, airports, stations, terminals, enterprises and tunnels, etc., which need to change voltage and safety isolation.
SGB.DGB series dry isolation 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
F class
Frequency
50Hz/60Hz
Ambient temperature
—15°C--+45°C
Dielectric strength
3500V/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. SGB (DGB) series three-phase (single-phase) dry isolation transformer is a multi-coil (double coil and above) structural transformer. The primary and secondary windings are insulated from each other, and the transformation ratio is fixed and Two types of taps can be boosted or stepped down. In addition to changing the voltage, the isolation transformer can electrically isolate the input winding and the output winding from each other to avoid the danger of touching the charged body (or metal parts that may be charged due to insulation damage) and the ground; The isolation transformer also has a certain effect of suppressing various interferences.
2. The main functions of SGB (DGB) series three-phase (single-phase) dry isolation transformer:
1). Electrical safety isolation
2). Change the voltage level
3). Overcome the drift of the center point and improve the power imbalance
4). Anti-surge impact and filtering function.
3. SGB (DGB) series three-phase (single-phase) dry isolation transformer is mainly used for AC 50-60Hz, input voltage does not exceed AC1140V power supply, widely used in high-speed rail, subway, high-rise buildings, airports, stations, terminals, Enterprises, tunnels and other transmission and distribution sites that need to change voltage and safety isolation, product rated input voltage, rated output voltage, connection group, tap winding capacity distribution, etc., can be carefully designed and manufactured according to user requirements.
4. SGB (DGB) series three-phase (single-phase) dry isolation transformers should be used indoors. The normal conditions of use are:
1), ambient temperature: -15 ° C - +45 ° C
2), altitude: <1000M
3) Relative humidity: < 95%
4) There are no gases, vapors, chemical deposits, dirt and other explosive and corrosive media that seriously affect the insulation of the transformer.
5) There is no serious vibration or bumps in the installation site.