KEE HING CHEUNG KEE CO., LTD.

DLFTZ CHANG HING KEE

INT’L INDUSTRY & TRADE CO., LTD.

DRY TYPE DISTRIBUTION TRANSFORMER

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CONTENT

SC(B) Series Resin-insulated Dry-type Power Transformer ...........................................2

SG(B) Series Grade-H insulated Non-enclosed Dry type Transformer...............................5

3D Cubic D style roll iron core H grade non-encapsulated winding dry-type transformer .........7

3D Cubic Roll Iron Core Resin-insulating Dry-type .....................................................9

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Dry Type Distribution Transformer SC(B) Series Resin-insulated Dry-type Power Transformer Introduction: Our resin-insulated dry-type power transformer is designed and manufactured under the latest German technology. We fully adopt the German filling-based vacuum casting technology and introduce the new technology of "Positive Pressure Casting" to make this type of transformers superior among dry-type transformers. With the rapid development of the economic improvement, now the unoiled, fireproof, safe and reliable dry-type transformers with long service life and easy maintenance are more and more widely used. The resin-insulated dry-type power transformers are mainly used in hotels, high-rise buildings, business centers, residential areas, stadiums, factories, airports, ports, subways, mines and wells, especially in the places with special requirement on fire protection, such as the places with limited installation space or that acting as power consumption load centers of cities or towns. Features:

With high overall mechanical strength, its cast coil can resist short circuit better than that of oil-filled type or other dry-typed transformers.

The compressive strength of epoxy resin is much higher (by 3.5-4 times) than that of air, and its dielectric coefficient is also higher than the latter, which makes its benchmark impulse level (BIL) high.

The product has good damp-proof and corrosion-resisting properties, especially suitable for working under extreme environments. It can be put into use without drying process after stopping running.

It has low local discharge rate and long service life. Under vacuum processing and cast molding, there is no interturn or layer bubble in its coil. Its local discharge is the lowest among the like products. In addition, with high mechanical strength, the epoxy casting dry-type transformer is free of deformation under the electrical short-circuit power. It also has good dustproof and antifouling properties and longer service life compared with other dry-type transformers.

Low wear and tear, low temperature rise and high efficiency. It is oil-less, pollution-free, flameproof, flame retarding, self-extinguishing and fireproof. It needs neither a separate transformer room nor core hanging overhaul or bearing beam, which

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saves both area and space. Oil-less and without poisonous gases, it is pollution-free. It does not need such auxiliary structures as oil pits, saving cost on civil engineering.

Easy to install, it needs no debugging and little maintenance. It is unnecessary to replace or check the oil material, saving running and maintenance cost.

It is equipped with the complete temperature protection control system, providing reliable guarantee for safe running of the transformer.

Technical parameter SC(B) 9 series 10kV resin-insulated dry-type power transformer

Gauge and installation size mm Model

No load losses

W

On load Losses at

120℃ W

Short-circuit Impedance

% E D

SC9-100/10 450 1660 660 550 SC9-125/10 530 1950 660 550 SC9-160/10 610 2250 660 580 SC9-200/10 700 2670 820 600 SC9-250/10 810 2910 820 600

SCB9-315/10 990 3670 820 660 SCB9-400/10 1090 4220 820 660 SCB9-500/10 1300 5160

4

1070 660 SCB9-630/10 1460 6310 1070 820

SCB9-1000/10 1980 8600 1070 820

SCB9-1250/10 2350 10200 1070 820

SCB9-1600/10 2750 12400 1070 820

SCB9-2000/10 3730 15300 1070 1070

SCB9-2500/10 4500 18100

6

1070 1070

4

Technical parameter SC(B) 10 series 10kV resin-insulated dry-type power transformer

SC(B) 11 series 10kV resin-insulated dry-type power transformer

Gauge and installation size mm Model

No load losses

W

On load Losses at 120℃

W

Short-circuit Impedance

% E D

SC9-100/10 450 1660 660 550

SC9-125/10 530 1950 660 550

SC9-160/10 610 2250 660 580

SC9-200/10 700 2670 820 600

SC9-250/10 810 2910 820 600

SCB9-315/10 990 3670 820 660

SCB9-400/10 1090 4220 820 660

SCB9-500/10 1300 5160

4

1070 660

SCB9-630/10 1460 6310 1070 820

SCB9-1000/10 1980 8600 1070 820

SCB9-1250/10 2350 10200 1070 820

SCB9-1600/10 2750 12400 1070 820

SCB9-2000/10 3730 15300 1070 1070

SCB9-2500/10 4500 18100

6

1070 1070

Gauge and installation size mm

Model

No load

losses W

On load Losses at 120℃

W

Open circuit current

%

Short-circuitImpedance

% E D

SC11-100/10 350 1570 1.6 660 550

SC11-200/10 545 2520 1.4 820 600

SCB11-315/10 770 3460 1.2 820 660

SCB11-400/10 850 3980 1.2

4

820 660

SCB11-630/10 1130 5950 1.0 1070 820

SCB11-800/10 1330 6950 1.0 1070 820

SCB11-1000/10 1540 8120 0.8 1070 820

SCB11-1600/10 2140 11730 0.8 1070 1070

SCB11-2000/10 2700 14450 0.6 1070 1070

SCB11-2500/10 3200 17170 0.6

6

1070 1070

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SG(B) Series Grade-H insulated Non-enclosed Dry type Transformer Introduction: Manufactured by the UL-certified NOMEX insulation system under the US Dupont Relintran technology, the SG (B) Grade-H insulated Non-enclosed Dry-type Power Transformer is of great overload capacity, safe, reliable, environment-friendly, energy-saving, fireproof, explosion proof, antifouling, damp proof and easy to maintain. With advanced design, reasonable structure and a good shape, its main performance indexes are higher than the national standards. It is most suitable for the environments demanding for fire protection and featured by high load fluctuation and frequent overload running. It is suitable for high-rise buildings, airports, stations, docks, subways, hospitals, power plants, metallurgy industry, shopping centers, residential areas as well as petrochemical industry, nuclear power plants, nuclear submarines, etc. The bran-new transformer value-added solutions have brought about a new generation of energy-saving, safe, green and environment-friendly products! Features:

Safe The heat resisting and insulation level of the transformer is above Grade H. It is flameproof, flame retarding, self-extinguishing innocuous and fireproof. The coil does not crack. Using the advanced VIP equipment and vacuum impregnation technology, the product has outstanding dampproof, antifouling, dustproof, moldproof and salt fog resisting properties. It is also able to withstand thermal shock and does not crack for life. It does not generate local discharge. It is compact and light. The main insulation material is Dupont NOMEX, which is used as the mixed insulation system at the hottest position of the transformer. With high heat resisting level, the product is compact and light.

Reliable It can run well above the nameplate indicated level. With new structure, new materials and new technology, it has a good heat dissipation capacity, long thermal life and terrific overload capacity. As a quality electrical insulation material, the NOMEX paper has lasting and steady electrical insulation property and mechanical properties, not easily aged, resisting contraction and compression as well as wear and tear and corrosion thanks to its great elasticity, which can keep its coil compact against short circuit for several years.

Environment-friendly The product does not pollute the environment during manufacture, transportation, storage and running. The winding can be decomposed and recovered, doing no harm to the environment but keeping pace with the trend. The product is flame-retardant but not combustion supporting or explosive. It does not release any poisonous gas below 750°C. With low noise, it can meet a higher demand for low noise in urban area.

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Technical parameter SG(B) 10 Grade –H Insulated Dry-type Power Transformer

Gauge and installation size mm Model

No load losses

W

On load Losses at 120℃

W

Open circuit current

Short-circuit Impedance

% DXE

SG10-200/10 660 3970 1.4 660X660

SG10-250/10 760 4670 1.4 820X820

SG10-315/10 880 5610 1.4 820X820

SG10-400/10 1040 6630 1.3 820X820

SGB10-500/10 1200 7940 1.3

4

820X820

SGB10-630/10 1340 9770 1.2 820X820

SGB10-800/10 1690 11560 1.2 820X820

SGB10-1000/10 1980 13340 0.9 820X820

SGB10-1250/10 2380 15640 0.9 820X820

SGB10-1600/10 2730 18100 0.9 820X1070

SGB10-2000/10 3320 21250 0.8 1070X1070

SGB10-2500/10 4000 24730 0.8

6

1070X1070

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3D Cubic D style roll iron core H grade non-encapsulated winding dry-type transformer Introduction: The 3D Cubic roll iron core non-encapsulated winding dry-type transformer, reform creatively the traditional transformers’ magnetic circuit configuration and whole composition. So as to the products not only have all the advantages of H grade plane non-encapsulated winding dry-type transformer, but also the 3-phase magnetic circuit symmetry entirely, the 3-phase no-load current balance, no-load loss and no-load current are lower, smaller size and light weight as well as quiet, are warmly welcomed by more and more users. The products are widely applied in high buildings, shopping centers, airdromes, sub-way, stations, docks, petroleum, chemistry industry, nuclear power stations, nuclear nukes, residential areas, light rail transit, power plants and so on, wherever should be fire proof, burst proof. Features:

Initiate “3D Cubic D style roll iron core dry-type transformer”, new & unique configuration, advanced capability, multinomial patents;

Iron core winding seamless, core column is absolutely rounded, the value section fill factor of iron core is more than 99%, optimal design parameter;

3-phase magnetic circuit shortest, reluctance loss least, no-load loss and no-load current is lower than international standard 40% and 80% respectively, benefit remarkably from energy-saving, little loss, power-saving.

3-phase magnetic circuit are equal in length and symmetry, 3-phase voltage balance, without wave distortion, very little noise (lower than international standard 10db);

Using U.S. Dupont “NOMEX” insulating materials and Germany “MORA” winding technology for the coil insulating configuration, upgrade the products insulation and heat-resistance to H grade, decrease 80% of fuel;

Fire proof and damp proof, flame proof and fire resistant, don’t need fans for cooling even work long time in 180℃ setting, strong load capability, environmental, the materials can be degradated and recycled completely after product life cycle;

Special iron core and coil configuration as well as the VPI techniques, lower the products composition, stabilize the power capability, have very good performance of cooling and endurance of heat impact;

Continuous and compact roll iron core, copper foil and special designed steel clip assembly compound to a whole, the short circuit resistance capability is very strong;

Unique 3D cubic configuration, so it has small size, light weight, fix space saved, and high effective, energy saved, low loss, long life cycle and low operation cost, high value with competitive price, and the economy benefit is remarkable.

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Technical parameter 3D Cubic D style roll iron core H grade non-encapsulated winding dry-type transformer

Tapping Range

H.V Tapping Range H.V.

L.V

No-load Loss

W

On-load Loss

W

Rated Capacity

kVA

KV % KV

Combi- nation

Symbol

11 10 75℃ 145℃

No-load Loss

%

Short Circuit

Impedance%

(LPA)Noise(LPA)

dB

200 470 520 1950 2400 0.6 40

250 540 620 2390 2930 0.5 40

315 630 710 3010 3700 0.5 42

400 700 840 3470 4280 0.5 42

500 850 970 4260 5230 0.4 44

630 1000 1100 5120 6290 0.4

6

44

630 960 1050 5200 6380 0.35 44

800 1200 1330 6070 7450 0.35 45

1000 1520 1600 7130 8750 0.3 45

1250 1610 1880 8450 10370 0.3 46

1600 1920 2110 10250 12580 0.25 46

2000 2280 2500 12680 15560 0.2 48

2500 2600 2870 14990 18450 0.2

6

50

1600 1840 2020 12300 15090 0.2 8 48

2000 1990 2190 14980 18390 0.2 48

2500 2520 2770 17000 20840 0.2 50

3150

6

6.3

6.6

10

10.5

11

±5

Or

±2x2.5

0.4 Dyn11

3320 3660 20000 24520 0.2

10

50

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3D Cubic Roll Iron Core Resin-insulating Dry-type Function Features:

Voltage rate:10-35/0.4KV, capability:30-3150KVA With adoption of 3D Cubic Roll Iron Core, three-phase

magnetic circuit symmetry; Much lower in no-load loss and no-load current; Compactly winding around the iron core, low noise; Foil-type coil in Low-voltage, rounded column structure in

High-voltage; With adoption of epoxy resin vacuum-casting, damp and

degradation proof, fire resistance and auto-close; Small size, high mechanical strength, good capability in

non-performance. Application ranges: High buildings, Shopping centers, Air port, Sub-way, Station, Ship docks, Oil fields, Chemical industries, nuclear power stations, nuclear submarines, residence districts, light-rail stations, power factories and so on, wherever need to be protected from fire and explosion. Technical parameter 3D Cubic Roll Iron Core Resin-insulating Dry-type

Voltage Combination

H.V Tapping Range H.V.

LV

No-load Loss

W

On-load Loss

W

Rated Capacity

kVA

KV % KV

Combination

Symbol

11 10 75℃ 120℃

No -load Loss

%

Short Circuit

Impedance %

(LPA)Noise(LPA)

dB

100 320 350 1300 1490 0.7 40

125 380 420 1520 1750 0.7 40

4040 420 460 1760 2020 0.7 40

200 470 520 1950 2230 0.6 40

250 540 590 2390 2740 0.5 40

315 660 730 3010 3450 0.5 42

400 700 840 3470 3960 0.5 42

500 850 970 4260 4860 0.4 44

630 (4%)

1000 1100 5120 5860 0.4

4

44

630

6 6.3 6.6 10 10.5

11

±5 Or

±2x2.5

0.4 Dyn11

960 1050 5200 5950 0.35 6

44

10

(6%)

800 1200 1330 6070 6950 0.35 45

1000 1520 1600 7130 8100 0.3 45

1250 1610 1880 8450 9680 0.3 46

1600 1920 2110 10250 11700 0.25 46

2000 2280 2500 12680 14420 0.2 48

2500 2600 2870 14990 17100 0.2 50

1600 (8%)

1840 2020 12300 14080 0.2 8 48

2000 (10%)

1990 2190 14980 17150 0.2 48

2500 (10%)

2520 2770 17000 19470 0.2 50

3150 (10%)

3320 3660 20000 22900 0.2

10

50