Application areas:
Measuring-level current transformer used in power system, transformer used on precision measuring instruments (such as watt-hour meter).
According to the requirements of different measurement accuracy of the transformer, different soft magnetic materials can be chosen as iron core materials. The higher the permeability of the iron core is, the smaller the measurement error of the transformer is, hence the accuracy is higher. At present, the most common iron core material is cold-rolled silicon steel sheet, followed by Permalloy and nano-crystalline glass alloy.
In recent years, demands for transformers with high-precision level (such as class 0.2, class 0.2Sand class0.5S) increased rapidly. When small ratio, low ampere turns are required or the iron core is restricted because of the small volume, the cold-rolled silicon steel often fails to meet the accuracy requirements. Although the Permalloy iron cores with high permeability can meet the required precision, its price is very high.
However use of nano-crystalline alloy iron cores can both meet the accuracy requirements and be produced at lower cost than the Permalloy. Therefore, the demand of measuring level current transformer iron core made of nano-crystalline alloy rapidly increased domestically.
The typical parameters comparison of the common soft magnetic materials used for current transformer iron cores:
Basic parameters
Nano-crystalline iron core
Permalloy (1J85) iron core
Silicon steel iron core
Saturation magnetic flux density (Bs)
1.25T
0.75T
2.03T
It is made of the iron-based nano-crystalline strips with a moderate saturation magnetic induction, high permeability and low loss, which can effectively reduce ratio difference angle difference of the transformer. The saturation magnetic induction Bs of nano-crystalline alloy is between the silicon steel and Permalloy.
The lower the Bs value is, the lower the security coefficient of the instrument is. When the system failure occurs and large current through the current transformer results therefore, the iron core is more easily filled, and the secondary current no longer increases in proportion, as can assure that the secondary instruments are well protected and not to be damaged. Permeability of nano-crystalline alloy is close to Permalloy and a magnitude higher than silicon steel, so it is suitable to be made as high-precision transformer iron core.
The density and lamination coefficient of nano-crystalline is lower than that of Permalloy, under the condition of the same size and similar performance of the two. In this case the nano-crystalline iron core is 1/4 lighter in weight, and 1/3 lower in the manufacturing cost. In addition, the linear range of nano-crystalline alloy is wider than that of Permalloy .It can work for a long time at temperature of -55 ~ 130 ¡æ ,with a good temperature stability.
b. Ring core:
No.
The iron Core Size
Case size(mm)
The weight of the iron core (kg per piece)
Turns ratio N1: N2 is 1:1; Input current (mA), 50Hz; Output voltage (mV)
Application areas:
Measuring-level current transformer used in power system, transformer used on precision measuring instruments (such as watt-hour meter).
According to the requirements of different measurement accuracy of the transformer, different soft magnetic materials can be chosen as iron core materials. The higher the permeability of the iron core is, the smaller the measurement error of the transformer is, hence the accuracy is higher. At present, the most common iron core material is cold-rolled silicon steel sheet, followed by Permalloy and nano-crystalline glass alloy.
In recent years, demands for transformers with high-precision level (such as class 0.2, class 0.2Sand class0.5S) increased rapidly. When small ratio, low ampere turns are required or the iron core is restricted because of the small volume, the cold-rolled silicon steel often fails to meet the accuracy requirements. Although the Permalloy iron cores with high permeability can meet the required precision, its price is very high.
However use of nano-crystalline alloy iron cores can both meet the accuracy requirements and be produced at lower cost than the Permalloy. Therefore, the demand of measuring level current transformer iron core made of nano-crystalline alloy rapidly increased domestically.
The typical parameters comparison of the common soft magnetic materials used for current transformer iron cores:
Basic parameters
Nano-crystalline iron core
Permalloy (1J85) iron core
Silicon steel iron core
Saturation magnetic flux density (Bs)
1.25T
0.75T
2.03T
It is made of the iron-based nano-crystalline strips with a moderate saturation magnetic induction, high permeability and low loss, which can effectively reduce ratio difference angle difference of the transformer. The saturation magnetic induction Bs of nano-crystalline alloy is between the silicon steel and Permalloy.
The lower the Bs value is, the lower the security coefficient of the instrument is. When the system failure occurs and large current through the current transformer results therefore, the iron core is more easily filled, and the secondary current no longer increases in proportion, as can assure that the secondary instruments are well protected and not to be damaged. Permeability of nano-crystalline alloy is close to Permalloy and a magnitude higher than silicon steel, so it is suitable to be made as high-precision transformer iron core.
The density and lamination coefficient of nano-crystalline is lower than that of Permalloy, under the condition of the same size and similar performance of the two. In this case the nano-crystalline iron core is 1/4 lighter in weight, and 1/3 lower in the manufacturing cost. In addition, the linear range of nano-crystalline alloy is wider than that of Permalloy .It can work for a long time at temperature of -55 ~ 130 ¡æ ,with a good temperature stability.
Note: Iron cores of other specifications can be provided upon request of users
b. Ring core:
No.
The iron Core Size
Case size(mm)
The weight of the iron core (kg per piece)
Turns ratio N1: N2 is 1:1; Input current (mA), 50Hz; Output voltage (mV)
Plate Iron Scrap is a material that a visual inspection appears of regular shape. This by-product is formed after slag processing in electrometallurgical furnaces.
Its chemical composition is homogeneous and stable with about Fe 90% and P around 1.4%, S 0.8% and C 1.4%.
The max weight of each pieces is up to 1 ton.
The material can be loaded loose in 20 heavy duty container.
Aluminium ( ingots, t bars, sows, rods), copper (cathodes, cakes, billets, ingots, rods), lead (ingots), nickel (cathodes both cut and uncut briquettes, pellets, discs, etc.), tin (ingots, etc.), zinc (ingots both regular size and jumbos), steel billets (all types including crc, hrc, hdgc, plates, sheets), concentrates and ores for above items including bauxite, manganese, clinker and iron ores etc), scraps of above items including hms 1&2 and steel scraps.
We have a unique iron ore resource footprint with large, high-quality resource bases in South Africa and India. Demand for iron ore globally is largely dependent on the state of the steel industry worldwide and, more specifically, on that of the steel manufacturing sector in China. Brat supplies leading quality lump ore and also produces premium fine ore from the mines of its associate company in Goa, India.
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Cast Iron and Ductile Iron tube and fittings PL739
Cast Iron and Ductile Iron tube and fittings can be offered by our comapny to meet different engineering needs.
The difference between ductile iron and gray iron
1. Different chemical composition
Nodular cast iron contains nodular graphite, which can improve its toughness and strength, while reducing brittleness. Gray cast iron contains a lot of carbon, so that its hardness and wear resistance is high, but the toughness is poor.
2. Different organizational structures
The structure of nodular cast iron contains nodular and ferrite, and the distribution of nodular is uniform. While the structure of gray cast iron is mainly ferrite and pearlite, and the distribution of pearlite is uneven.
3. Different performance
Ductile iron has high strength and toughness, and has good corrosion resistance. It is uitable for the manufacture of high load and high pressure parts. The hardness and wear resistance of gray cast iron are high. It is suitable for the manufacture of friction and wear parts.
Application field
Cast iron : because of its low strength and good vibration resistance. It is often used in the production of parts under compressive stress, such as box, base, etc.
Ductile iron : because of its high strength and good toughness. It is often used in the manufacture of parts requiring high strength and toughness, such as crankshaft, connecting rod and so on.
KF series
split-core current transformers.
The CT can be mounted to existing panels, such
as control centers or load centers, to measure or monitor voltage. These CTs
can be mounted without removing existing cables for easily installation.
The initial magnetic permeability and temperature stability between nanocrystalline soft magnet alloy and permalloy are similar. Under the same conditions of core sizes and characteristics, the weight of the former is much lighter
(about 1/3 lighter), cost much lower.
Applications:
Electronic kwh meter
Precise power meter
Overcurrent protection in mechanical control apparatus
Current control in industrial automation
Pig Iron for sale at high quantities from India. Payment Term - LC For price and specification.
This Pig Iron slag is a by-product derived from the production of thermal insulating products. The byproduct is a ferrous slag which can be utilised in an electric arc furnace to produce crude steel. Physical Description On visual inspection, it appears to be made up of irregular shapes. Dimension: 300mm -1000mm Chemical Composition Its chemical composition is homogeneous and stable with Fe contents in the range of 85 +/- 5% and P contents < 0.8% S around 0.15% and C% around 3.5%. Packing: Loose in container Loading: in 20 Container.
Transformers,Distribution and Power Transformer,Varivolt
Safety Transformers
Diesel Generators
Industrial Panels
Stabilizers
Energy Saver
Industrial Panels
Natural Red Iron Oxide is the most widely occurring Minerals in Earth. It is widely used in many applications due as it is economical as compared to Synthetic Oxides.
Applications :
Red Oxide is anti-corrosive and has inertness to alkali and chemicals which makes its very viable for making of paint, protective coating for steels, cement coloring, NPK Fertilizers, paving tiles.
Gypsum rocks, gypsum powder, rock salt (industrial salt and deicing salt), food grade salt, sodium bicarbonate, limestone, white limestone (marble chips), sulphur (granular, lumps).
Pig Iron comprises three main types: Basic Pig Iron, Foundry Pig Iron and Nuclear Pig iron. We supply compositions within fairly narrow ranges of specifications with the objective of optimizing customer's costs
These cast iron skulls are a by-product derived from the cast iron foundries. The byproduct is a ferrous by-product which can be utilised in an electric arc furnace to produce crude steel.
Physical Description
On visual inspection, it appears to be made up of irregular shapes.
The material is separated by magnet and screener.
Packing: Loose in container
Loading: in 20 Container
For further information, please feel free to contact us.
Application
Current transformers can convert large currents into small currents in a certain proportion, thereby providing current for various instruments and relay protection, and isolating the secondary system from high voltage. This way can protect workers and equipment, can also simplifies and standardizes the manufacture of meters and relays.
Advantagesï¼?
In order to improve the current transformer precision, has to improve the magnetic permeability of current transformer cores. Compared with silicon steel core, nanocrystalline core has better magnetic permeability. Compared with permalloy core, the cost of nano core is lower. So nano core is the ideal material of current transformer. It is widely used in precision current transformer, zero sequence current transformer, medium and high frequency transformer.
Application
Current transformers can convert large currents into small currents in a certain proportion, thereby providing current for various instruments and relay protection, and isolating the secondary system from high voltage. This way can protect workers and equipment, can also simplifies and standardizes the manufacture of meters and relays.
Advantages
In order to improve the current transformer precision, has to improve the magnetic permeability of current transformer cores. Compared with silicon steel core, nanocrystalline core has better magnetic permeability. Compared with permalloy core, the cost of nano core is lower. So nano core is the ideal material of current transformer. It is widely used in precision current transformer, zero sequence current transformer, medium and high frequency transformer.
Features:
High saturate magnetic induction bs
High initial permeabilityhigh linearity high accuracylow phase and amplitude error for ct
Good temperature stability-55~130
Applying for transformer class grade: 0.5-0.05 class
2applications
High precision current and voltage transformer
Current leakage circuit breakers
Electronic watt hour meter
Precision power meter
Current control in automation industry
96426 Current Transformer Iron Core Suppliers
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