VPI (Vacuum Pressure Impregnated) Transformer with C-class Insulation
CEEG was a pioneer in China (in 1999) to use DuPont Nomex paper as insulation material, the first to pass the KEMA E2, C2, and F1 tests (in 2004), and the first C class insulation with CSA certificate for ventilated dry-type transformers. It's an excellent choice for places requiring strict fireproofing, and having large rating waves, dirtiness, and moisture, such as airports, subways, power plants, mines, hospitals, high-buildings, shopping centers, crowded areas, the oil industry, nuclear power plants, etc.
Accessories: temperature control sensors, temperature control units, fans, boxes, anti-vibration devices
Available in multiple models, please check the enclosed product manual.
Product Features
The CEEG Vacuum Pressure Impregnated transformer boasts strong overload capacity, high-temperature resistance, safety, reliability, fire retardant, moisture resistance, environmentally friendly, low noise, easy maintenance, low partial discharge, and crack-free.
1. DuPont Nomex® Paper
Establishing partnership relationships with DuPont in 1999, CEEG is the first company in China to apply DuPont Nomex® Paper as insulation material in manufacturing non-encapsulated dry-type transformers. Nomex® Paper gives the transformer a high insulation grade of class H or C. The wrapped windings keep a tight structure that can endure short-circuiting impact even after years of service.
2. Silicon Steel Core or Amorphous Alloy Core
The core of the three phase structure is manufactured by high-grade cold-rolled grain-oriented silicon steel sheets lap-jointed at 45 degrees with 7 stepping seams, or high-quality amorphous alloy strips. The core is wrapped by insulated tape to insulate it from windings. A special square tube and draw plates are used here to fasten the structure. The surface is covered by moisture and rust-resistant resin. The design can effectively reduce no-load loss, no-load current, and noise. For the amorphous alloy core model, the no-load loss is decreased by 60%, and the energy efficiency is significantly increased.
3. HV & LV Coils
The high-voltage winding has a continuous structure to provide high mechanical strength and good radiation capability. It's excellent in damp proof and withstands heat shock, with partial discharge less than 5PC. The winding can be recovered after its service life. The F-grade DMD lamination low voltage foil is presoaked in epoxy resin for layer insulation and soaked through VPI (vacuum pressure impregnating) equipment and a high-temperature curing machine. The impregnation process is automatic to ensure a void-free insulation. Low voltage winding with high current taps are provided.
4. Additional Features
Multiple voltages on primary and secondary sides to suit customer requirement
Fans can increase the emergency overload capacity
Self-extinguished performance provides higher resistance to fire than oil
Suitable for harmonic loading.
Core loop testing transformer for turbo gen sets.
Low energy content in the event of fire, reduced weight, excellent resistance to heat waves
Certification
CEEG dry-type transformers hold KEMA E2, C2, and F1 in Environmental, Climatic and Fire Behaviour classes, ISO9001, ISO14001, and ISO45001 in quality, environment, occupational health and safety, UDEM, and other international certificates. We are one of the earliest manufacturers of dry-type transformers in China.
Notable Client
Rio Tinto, Mineral Technology
Parameters Table
10kV SG(B)10 Dry Type Transformer
Rated high voltage：10kV,6kV
Rated low voltage：0.4kV
Vector Group：Dyn11 or Yyn0
Tapping Range：±2 x 2.5%, ±5%
Model
Impedance %
No Load Loss (W)
（145℃）Load Loss (W)
No Load Current %
Noise Level (dB)
Weight (kg)
SG10-100
4%
400
1370
1.8
43
675
SG10-125
4%
470
1610
1.6
43
720
SGB10-160
4%
540
1850
1.6
44
890
SGB10-200
4%
620
2200
1.4
44
920
SGB10-250
4%
720
2400
1.4
46
1050
SGB10-315
4%
880
3730
1
47
1410
SGB10-400
4%
980
4280
1
48
1565
SGB10-500
4%
1160
5230
1
49
1680
SGB10-630
4%
1340
6290
0.85
51
1800
SGB10-630
6%
1300
6400
0.85
51
1800
SGB10-800
6%
1520
7460
0.85
52
1930
SGB10-1000
6%
1770
8760
0.85
52
2355
SGB10-1250
6%
2090
10300
0.85
53
2940
SGB10-1600
6%
2450
12500
0.85
54
3540
SGB10-2000
6%
3050
15500
0.7
54
4050
SGB10-2500
6%
3600
18400
0.7
55
4790
SGB10-3150
6%
4030
19220
0.7
57
6215
10kV SGZ(B)10 Dry Type Transformer
Vector Group：Dyn11 or Yyn0
Tapping Range：±2 x 2.5%, ±5%
Model
Impedance %
No Load Loss (W)
（145℃）Load Loss (W)
No Load Current %
Noise Level (dB)
Weight (kg)
SGZB-250-10
4
720
2400
0.8
46
1400
SGZB-315/10
4
880
3730
0.7
46
1450
SGZB-400/10
4
980
4280
0.7
46
1965
SGZB-500/10
4
1180
5230
0.6
48
2145
SGZB-630/10
4
1340
6290
0.5
49
2320
SGZB-630/10
6
1300
6400
0.5
50
2205
SGZB-800/10
6
1520
7480
0.4
51
2635
SGZB-1000/10
6
1770
8760
0.4
51
2720
SGZB-1250/10
6
2090
10300
0.3
52
3225
SGZB-1600/10
6
2450
12500
0.3
53
4115
SGZB-2000/10
6
3050
15500
0.25
53
4365
SGZB-2500/10
6
3600
18400
0.25
54
5450
10kV SGB11 Dry Type Transformer
Rated high voltage：10kV,6kV
Rated low voltage：0.4kV
Vector Group：Dyn11 or Yyn0
Tapping Range：±2 x 2.5%, ±5%
Model
Impedance %
No Load Loss (W)
（145℃）Load Loss (W)
No Load Current %
Noise Level (dB)
Weight(kg)
SG11-100
4%
360
1310
1.6
42
875
SG11-125
4%
420
1550
1.4
42
920
SGB11-160
4%
480
1780
1.4
43
1090
SGB11-200
4%
560
2110
1.1
43
1120
SGB11-250
4%
640
2290
1.1
44
1250
SGB11-315
4%
790
3530
1
46
1610
SGB11-400
4%
880
4070
1
46
1765
SGB11-500
4%
1040
4970
1
47
1880
SGB11-630
4%
1200
5990
0.8
49
2000
SGB11-630
6%
1160
6070
0.8
49
2000
SGB11-800
6%
1360
7090
0.8
50
2130
SGB11-1000
6%
1590
8290
0.8
50
2555
SGB11-1250
6%
1880
9880
0.8
51
3140
SGB11-1600
6%
2200
11940
0.8
52
3740
SGB11-2000
6%
2720
14730
0.6
52
4250
SGB11-2500
6%
3200
17510
0.6
53
4990
Strategic Copperation with Dupont Since 1999
Basic Parameters
Rated Power: 5 kVA – 30MVA
Voltage Class: 1.1kV – 27kV
Material Temperature Classes: H (180°C), C(180℃+)
Frequency: 50/60Hz
Impedance: 4%/6%
Vector Group: Dyn11/Yyn0
Tapping Range: ±2*2.5%/±5%
Winding Materials: aluminum or copper
Environmental Temperature: -60 a + 60
Conformity: IEC60071,60076
Accessories: temperature control sensors, temperature control units, fans, boxes, anti-vibration devices
Available in multiple models, please check the enclosed product manual.
Product Features
The CEEG Vacuum Pressure Impregnated transformer boasts strong overload capacity, high-temperature resistance, safety, reliability, fire retardant, moisture resistance, environmentally friendly, low noise, easy maintenance, low partial discharge, and crack-free.
1. DuPont Nomex® Paper
Establishing partnership relationships with DuPont in 1999, CEEG is the first company in China to apply DuPont Nomex® Paper as insulation material in manufacturing non-encapsulated dry-type transformers. Nomex® Paper gives the transformer a high insulation grade of class H or C. The wrapped windings keep a tight structure that can endure short-circuiting impact even after years of service.
2. Silicon Steel Core or Amorphous Alloy Core
The core of the three phase structure is manufactured by high-grade cold-rolled grain-oriented silicon steel sheets lap-jointed at 45 degrees with 7 stepping seams, or high-quality amorphous alloy strips. The core is wrapped by insulated tape to insulate it from windings. A special square tube and draw plates are used here to fasten the structure. The surface is covered by moisture and rust-resistant resin. The design can effectively reduce no-load loss, no-load current, and noise. For the amorphous alloy core model, the no-load loss is decreased by 60%, and the energy efficiency is significantly increased.
3. HV & LV Coils
The high-voltage winding has a continuous structure to provide high mechanical strength and good radiation capability. It's excellent in damp proof and withstands heat shock, with partial discharge less than 5PC. The winding can be recovered after its service life. The F-grade DMD lamination low voltage foil is presoaked in epoxy resin for layer insulation and soaked through VPI (vacuum pressure impregnating) equipment and a high-temperature curing machine. The impregnation process is automatic to ensure a void-free insulation. Low voltage winding with high current taps are provided.
4. Additional Features
Multiple voltages on primary and secondary sides to suit customer requirement
Fans can increase the emergency overload capacity
Self-extinguished performance provides higher resistance to fire than oil
Suitable for harmonic loading.
Core loop testing transformer for turbo gen sets.
Low energy content in the event of fire, reduced weight, excellent resistance to heat waves
Certification
CEEG dry-type transformers hold KEMA E2, C2, and F1 in Environmental, Climatic and Fire Behaviour classes, ISO9001, ISO14001, and ISO45001 in quality, environment, occupational health and safety, UDEM, and other international certificates. We are one of the earliest manufacturers of dry-type transformers in China.
