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Transmission & Distribution Network
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Transmission & Distribution Network
Transmission & Distribution Network
Power supply companies all over the world ensure a reliable supply of electrical energy. Their task is to assure maximum possible security of supply whilst maintaining high levels of efficiency. The challenges on the power transmission and power distribution world market are fierce. That gives us a competitive edge to provide our customers with the desirable results in terms of security and efficiency - which means more value. As electrical power markets undergo dynamic change, we remain well prepared for these changes and also for future challenges.
Banglamark offers enterprise software, integrating project and asset management, service management – including customer engagement tools - with core ERP functionality to the power transmission and distribution industry. We provide customers with state-of-the-art technology combined with power transmission and distribution know-how under the concept of localization through customer orientation. Turnkey engineering and project management are centers of our competence among our broad range of medium and high voltage products for the electrical industry.
Smart Grid
A smart grid is an electrical grid which includes a variety of operation and energy measures including smart meters, smart appliances, renewable energy resources, and energy efficient resources.
Electronic power conditioning and control of the production and distribution of electricity are important aspects of the smart grid.
High-Mid-Low Voltage Substations
High-Mid-Low Voltage substations, the node points of today’s complex power transmission infrastructure, play a key role in meeting this demand safely and reliably. Siemens supplies them on a turnkey basis. Wherever you are, BANGLAMARK is your reliable partner for the one-stop planning and construction of customized, state-of-the-art high-voltage substations.
High-Mid-Low Voltage Products
For power grid operators and utility companies the reliability of their power transmission and distribution equipment installed in their network is vital. Investments in grid renewal and extensions are costly; equipment needs to last for decades. On top of that, it is important to eliminate electrical failures, reduce power outages, and increase the safety of people who work in critical environments.
BANGLAMARK makes sure that manufacturers comply with international standards, national deviations and end-user specifications to maintain a high level of safety and reliability. We offer you the complete scope of low, medium and high voltage testing for power transmission & distribution equipment. Our services are applicable to equipment manufacturers, energy utility companies, grid operators and large-scale energy users, amongst others.
HV Direct Current Transmission Systems (HVDC)
High Voltage Direct Current (HVDC) technology is commonly used as a method to isolate two independent Alternating Current (AC) power grids while permitting the exchange of power between both AC grids. HVDC technology can disconnect and isolate each AC grid from the other in the event of a blackout of one of the AC grids to avoid losing both AC grids. This isolation technique is commonly used at the interconnection points of AC grids for two countries.
Flexible AC Transmission System (FACTS):
BANGLAMARK provides solutions that offer grid operators the ability to provide reactive power support, enhance controllability, improve stability and increase power transfer capability of AC transmission systems. Our portfolio includes power electronic based technology as well as more traditional electro-mechanical solutions, which utility operators have become more interested in because of their grid friendly and reliable nature.
Grid Access Solutions
The demand on electricity grids is greater than ever before – driven by developments on both the generations and consumption sides. And income can only flow where the electricity from your offshore wind farm flows reliably too. We take care of both on your behalf, as we combine. Because we combine innovative technologies with proven solutions for grid connection, successfully tested in thousands of applications. It doesn’t matter whether you need turnkey solutions, all-inclusive component and system packages or service and maintenance: we help your offshore wind farm to deliver, no matter how hard the wind blows.
Gas Insulated Transmission Lines (GIL)
Gas-insulated transmission lines (GIL) are the safe and flexible alternative to overhead lines and take up much less space while providing the same power transmission. Since they hardly impact on the landscape, and their minimal electromagnetic radiation means they can also be used close to, or even within buildings, GIL can be considered for a wide range of applications. They are suitable for providing a continuation for overhead lines underground, connecting power stations to the power network, or as a space-saving way to connect major industrial plants to the public grid.
Gas-insulated transmission lines (GIL) have already proven their technical reliability for a number of decades, since they offer outstanding safety in operation and even in the event of failure, in addition to their very good transmission performance. Any impact on individuals or neighboring resources can be largely ruled out. Electrical losses are kept comparatively low due to the large conductor cross section of the GIL system.
Dry Type Transformer

10 kV Dry Type
This type of transformer is an excellent product for urban power network transformation, which is very suitable for urban power grid, high rise building, business centers, theaters, hospitals, tunnels, subway, airports, etc. SC (B) 10/11 epoxy cast dry-type transformer is a dry-type transformer with strong mechanical strength, electrical strength and good heat-resistance performance. It is made of F class epoxy resin mixture filter and after vacuum film degassing.
Features
- Strong anti-short-circuit ability, low loss, low no-load current, strong impact resistance capability, low partial discharge, low noise, good heat sinking capacity.
- Performance parameters are better than GB and IEC standards.
- Safe, flame retardant, fireproof, non-polluting, it can be installed directly in the load site.
- Maintenance-free, easy to install, low operating costs.
- High reliability, high mechanical strength.
- Good seismic capability.
- Good anti-moisture & anti-corrosion features.
- Good overload capability, in the absence of air-cooling, it can withstand 120% of the load long-term service.
- Suitable to substations located in densely populated, narrow urban places.Standard modular design to facilitate circuit extension, modification and replacement.
- Feasible to any replacement in both circumstances of any unit in fault and according user needs.
- Smaller dimension makes it more convenient to be moved, transported or replaced.
- Altitude: ≤1000m
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -25°C (Outdoor dry type power transformer)
- Minimum temperature: -5°C (Indoor dry type power transformer)
- Highest average temperature of month: +30°C
- Highest average temperature of year month: +20°C
- Relative air humidity: ≤90%, There should not be water on the coil surface; Three-phase power supply voltage of three-phase transformer should be approximately symmetrical Power supply voltage wave should be similar to sine wave.
Parameters
SC (B) 10 Three Phase Epoxy Resin Cast Dry Type Power Transformer



20 kV Dry Type
SC (B) 10/11 epoxy cast dry-type transformer is a dry-type transformer with strong mechanical strength, electrical strength and good heat-resistance performance. It is made of F class epoxy resin mixture filter and after vacuum film degassing.
Features
- Strong anti-short-circuit ability, low loss, low no-load current, strong impact resistance capability, low partial discharge, low noise, good heat sinking capacity.
- Performance parameters are better than GB and IEC standards.
- Safe, flame retardant, fireproof, non-polluting, it can be installed directly in the load site.
- Maintenance-free, easy to install, low operating costs.
- High reliability, high mechanical strength.
- Good seismic capability.
- Good anti-moisture & anti-corrosion features.
- Good overload capability, in the absence of air-cooling, it can withstand 120% of the load long-term service.
- Suitable to substations located in densely populated, narrow urban places.
Normal Service Conditions
- Altitude: ≤1000m
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -25°C (Outdoor dry type power transformer)
- Minimum temperature: -5°C (Indoor dry type power transformer)
- Highest average temperature of month: +30°C
- Highest average temperature of year month: +20°C
- Relative air humidity: ≤90%, There should not be water on the coil surface; Three-phase power supply voltage of three-phase transformer should be approximately symmetrical Power supply voltage wave should be similar to sine wave.
Parameters
SC (B) 10 Three Phase Epoxy Resin Cast Dry Type Power Transformer


35 kV Dry Type
SC (B) 10/11 epoxy cast dry-type transformer is a dry-type transformer with strong mechanical strength, electrical strength and good heat-resistance performance. It is made of F class epoxy resin mixture filter and after vacuum film degassing.
Features
- Strong anti-short-circuit ability, low loss, low no-load current, strong impact resistance capability, low partial discharge, low noise, good heat sinking capacity.
- Performance parameters are better than GB and IEC standards.
- Safe, flame retardant, fireproof, non-polluting, it can be installed directly in the load site.
- Maintenance-free, easy to install, low operating costs.
- High reliability, high mechanical strength.
- Good seismic capability.
- Good anti-moisture & anti-corrosion features.
- Good overload capability, in the absence of air-cooling, it can withstand 120% of the load long-term service.
- Suitable to substations located in densely populated, narrow urban places.
Normal Service Conditions
- Altitude: ≤1000m
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -25°C (Outdoor dry type power transformer)
- Minimum temperature: -5°C (Indoor dry type power transformer)
- Highest average temperature of month: +30°C
- Highest average temperature of year month: +20°C
- Relative air humidity: ≤90%, There should not be water on the coil surface; Three-phase power supply voltage of three-phase transformer should be approximately symmetrical Power supply voltage wave should be similar to sine wave.
Parameters
SC (B) 10 Three Phase Epoxy Resin Cast Dry Type Power Transformer

Oil Immersed Transformer

10 kV Oil Immersed Transformer
The oil immersed power transformer is used for regulating voltage and AC power transmission. The oil immersed power transformer is composed of core, voltage regulating switch, oil tank and other components and the dialectic material is dielectric oil.
Features
Core
High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.
Coil
The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity. In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.
Oil Tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.
Normal Service Condition
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -45°C
- Average temperature of the warmest month: +30°C
- The hottest annual average temperature: +20°C
- Altitude: ≤1000m
- Contamination class: Ill
- Seismic intensity: VIII
- Power supply voltage waveform: approximately sinusoidal
Note: If the above conditions are exceeded, please specify when ordering, for special consideration.
Parameters
SC (B) 10 Three Phase Epoxy Resin Cast Dry Type Power Transformer


20 kV Oil Immersed Transformer
The oil drenched force transformer is made out of center, voltage managing switch, oil tank and different parts and the rationalization material is dielectric oil.
Features
Core
High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.
Coil
The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity. In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.
Oil Tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.
Normal Service Condition
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -45°C
- Average temperature of the warmest month: +30°C
- The hottest annual average temperature: +20°C
- Altitude: ≤1000m
- Contamination class: Ill
- Seismic intensity: VIII
- Power supply voltage waveform: approximately sinusoidal
Note: If the above conditions are exceeded, please specify when ordering, for special consideration.
Parameters
S11 20Kv Three Phase Oil Immersed Natural Air Cooling Double Winding off Circuit Tap Changing Distribution Transformer


35 kV Oil Immersed Transformer
The oil doused power transformer is made out of focus, voltage overseeing switch, oil tank and various parts and the legitimization material is dielectric oil.
Features
Core
High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.
Coil
The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity. In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.
Oil Tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.
Normal Service Condition
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -45°C
- Average temperature of the warmest month: +30°C
- The hottest annual average temperature: +20°C
- Altitude: ≤1000m
- Contamination class: Ill
- Seismic intensity: VIII
- Power supply voltage waveform: approximately sinusoidal
Note: If the above conditions are exceeded, please specify when ordering, for special consideration.
Parameters
S11 35Kv Three Phase Oil Immersed Natural Air Cooling Double Winding off Circuit Tap Changing Distribution Transformer

Power Transformer

66 kV Oil Immersed Power Transformer
The oil immersed power transformer is used for regulating voltage and AC power transmission. A variety of transformers under 110kV are included in the product line: the stacked iron core structures series, the rolled iron core structure series amorphous alloy series, etc.
Features
Core
High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.
Coil
The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity. In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.
Oil Tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.
Normal Service Condition
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -45°C
- Average temperature of the warmest month: +30°C
- The hottest annual average temperature: +20°C
- Altitude: ≤1000m
- Contamination class: Ill
- Seismic intensity: VIII
- Power supply voltage waveform: approximately sinusoidal
Note: If the above conditions are exceeded, please specify when ordering, for special consideration.
Parameters
S(F)11 66Kv Three Phase Oil Immersed Natural (Forced) Air Cooling Double Winding off Circuit Tap Changing Distribution Transformer


110 kV Oil Immersed Power Transformer
The advantage includes small dimension, reasonable price, strong weather resistance and so on. It is applicable to power system, industrial and mining enterprises, transportation, post and telecommunications sector, research institutes etc. A variety of transformers under 110Kv are included in the product line: The stacked iron core structure series amorphous alloy series etc.
Features
Core
High-quality grain-oriented cold-rolled silicon steel sheet are employed, and the whole oblique non-porous banding structure are used here. The core has a multi-level ladder shape, with three joints or five joints, which is of low no-load loss and low noise. Rolled cores are direct rolled by certain special equipment, which gives the advantages including no seam, no corner weight, reluctance reduction, low no-load loss. Amorphous alloy is an advanced core material, which leads to an average reduction of 72% no-load loss and a reduction of 50% no-load current.
Coil
The high-quality QQ acetal enameled round copper wire and oxygen-free copper rod are used to form the coil. The coil type includes cylinder type, continuous type, new type spiral type, split type, etc. It has sufficient electrical strength, mechanical strength and cooling capacity. In order to increase the capacity of anti-short-circuit of the transformer, self-adhesive transposition wire is used in the 35kV and above windings. The wire is made of self-adhesive acetal enameled flat wire, and after winding into a coil, it is heated so that the flat wire could be bonded between each other to form a rigid coil, which can withstand greater bending stress, thereby enhancing the capacity of anti-short-circuit of the transformer. The most important feature of the self-adhesive transposition wire is that it can reduce the loss of the transformer, and as a result of multi-stranded conductor with transposition, the eddy current loss and circulation loss are greatly reduced, it can also reduce the temperature rise of the partial hot spots of winding, thus the winding temperature distribution is more uniform.
Oil Tank
The oil tank is made of high quality steel plate, and the shape includes elliptical shape, rectangular shape, etc. The type of the radiator includes: corrugated sheet type radiator, expansion type radiator and corrugated type tank. The sealing performance test is conducted on oil tanks. The inside and outside surfaces are pickling and phosphate treated, and then spray priming paint for three times and surface paint for one time, which give its corrosion resistance.
Normal Service Condition
- Ambient air temperature
- Maximum temperature: +40°C
- Minimum temperature: -45°C
- Average temperature of the warmest month: +30°C
- The hottest annual average temperature: +20°C
- Altitude: ≤1000m
- Contamination class: Ill
- Seismic intensity: VIII
- Power supply voltage waveform: approximately sinusoidal
Note: If the above conditions are exceeded, please specify when ordering, for special consideration.
Parameters
S(F)11 110Kv Three Phase Oil Immersed Natural (Forced) Air Cooling Double Winding (L.V.:10kV) off Circuit Tap Changing Distribution Transformer.

Special Transformer

On Load Tap Changing Capacity and Voltage Adjusting Power Distribution Transformer
Transformer: This product is suitable for the power distribution area of AC 50Hz, rated voltage 10/0. 4Kv, Capacity 630 kVA and below.
S13-M. ZT on load tap changing capacity and voltage adjusting distribution transformer is an intelligent, energy- saving new equipment. It can regulate the transformer coil tap connection type and load switch status by using the pad mounted on load tap changing capacity and voltage adjusting switch according to the user’s actual operating voltage level, load capacity, power quality etc. it can reduce no load loss, achieve energy saving operation of the transformer, thus achieving energy saving purpose.

Pad Mounted Transformer for Wind Farm
The oil tank is equipped with 35kv 11type of oil-immersed step-up transformer, and the oil tank is fully sealed structure. ZGS11-Z. F wind power pad-mounted transformer is applied in 35Kv terminal power supply system, which could be used as the substation, power distribution equipment, metering, control and protection devices. The pad mounted transformer also includes the light controller, soft startup device, and remote controlling device.
Features
The oil tank is equipped with 35kV 11 type oil-immersed step-up transformer, and the oil tank is fully sealed structure, the radiator is rationally laid, and the high-performance seals, pressure relieve valve, gas relay, oil level gauge, temperature controller are equipped. The advantages are low loss, low noise, low temperature rise, high resistance to short circuit, high overload, no leakage and so on. In addition, the high-voltage load switch and high-voltage fuses are also placed in the oil, the use of transformer oil as an insulating medium, which has a strong electrical performance.
In addition, high-voltage load switch and high-voltage fuses are also placed in the oil tank, the transformer oil is used as the insulating medium, which makes it has a strong electrical feature.
The high-voltage room is equipped with enhanced anti-contamination outlet bushing, at the end there set the fully insulated cable contacts, and the arrester is also equipped to reduce the over-voltage risk. The high-voltage room is also equipped with a sensor. Electromagnetic group and live display are employed to prevent misuse.
Low-voltage room is generally employed the dual-line as the incoming line, and equipped with circuit breaker, disconnector, current transformer, surge arrester and other components, another substation is used in it as a transformer for the entire substation power supply.
The three compartments are structurally independent and electrically interconnected. This not only ensures the safety and convenience of operations, but also ensures the safety and reliability of operations. The transformer box is designed to employ a unique labyrinth sealing type, coupled with high-performance long-life seals, all the incoming and out coming line and the vents are equipped with anti-dust chamber, which can effectively prevent dust, rain and snow. This product truly achieves full condition, full insulation, fully sealed, maintenance-free, which ensures that it can be used in the harsh environment for 20 years.

Pad-mounted Transformer for Solar Project
ZGS-ZG modular transformer is designed to meet the growing demands for photovoltaic power supply. This product is designed on the basis of 35Kv pad-mounted transformer. The product has a small size, a light weight and it is easy to install. The transformer body and the oil tank are closely connected with a fixed device.
Features
The transformer body and the oil tank are closely connected with a fixed device. All the high voltage and low voltage line are soft-connected. The connection between tap wire and on-load tap-changer is cold-welded and fastened with bolts. All connections (including connections between coil and backup fuse, plug-in fuse, load switch, etc) are cold welded. The fastening part is equipped with self-locking anti-loose device to keep the transformer withstanding vibrations and bumps during the long-distance transportation. After delivering to the installation site, there is no need to do the conventional hanging core inspection.
The transformer has a whole-sealed structure, and there is no oil conservator.
The enclosure is specially treated to make it has a good anti-corrosion ability, and also gives it good performances in preventing wind erosion and salty fog.
Meet Our Experts
- Address: KA-6/A, Navana Sylvania Baridhara, Dhaka, Bangladesh
- Phone: (+88) 01977646434
- Email: [email protected]
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