product brief introduction AC hipot tester series Testing Transformer is power plants power supply bureau and research institutions and other users to do the AC voltage test basic test equipment by the standards of the State Bureau of Quality Supervision for a variety of electrical products electrical components insulation material dielectric strength test etc. the insulation level assessment of products under the provisions of the voltage insulation defects were found in the sample and measure the ability of over-voltage. AC HV Testing Transformer Classification: There are four kinds of high voltage testing transformer according to the medium points: 1. Oil-immersed high voltage transformer test: large capacity cheap convenient maintenance mainstream products. 2. Inflatable high voltage test transformer : interrupter resistance and light weight. 3. Dry type high voltage testing transformer: light weight light volume can run backward price expensive. 4. Series type high voltage testing transformer: small volume low voltage light weight easy to transport and install.
product brief introduction Product Introduction The test transformer calls the booster it is the basic test equipment used by the power station supplying and distributing the electrical power system and the scientific research unit. Which used in the insulated intension test on all kinds of electrical products electrical equipments and insulated materials testing the insulated level of products discovering the insulated objection of quizzee scaling the capacity burdened voltage AC HV Testing Transformer Classification: There are four kinds of high voltage testing transformer according to the medium points: 1. Oil-immersed high voltage transformer test: large capacity, cheap, convenient maintenance, mainstream products. 2. Inflatable high voltage test transformer : interrupter resistance, and light weight. 3. Dry type high voltage testing transformer: light weight, light volume, can run backward, price expensive. 4. Series type high voltage testing transformer: small volume, low voltage, light weight, easy to transport and install.
Product Introduction TKBB-S Transformer Ratio Tester is specially designed for three- phase transformer in power system especially for transformer of type Z winding and other transformers whose zero-load current is relatively high.Transformer turns ratio test is very important in order to find out the transformer has the right ratio corresponding on its rated voltage in primary and secondary. TKBB-S is single phase, automatically test set specially designed for turns ratio, phase shift and excitation current measurements of power, distribution and instrument transformer. The tester has wide testing range fast testing speed favorable repeatability flexible data processing convenient connection complete protection easy learning and convenient operation
The on-load tap changer is the only moving part connected with the transformer circuit so more and more attention has been paid to the detection of the on-load tap changer.In the electrical equipment handover and preventive test regulations it is required to check the action sequence of on-load tap changer measure switching time etc.This device is mainly used for measuring the transition waveform transition time transient resistance of transformer on-load tap changer three-phase synchronism etc. product names On - load tap - changer tester transformer on - load tap - changer tester transformer on - load switch tester
Three-phase transformers are used to convert the available 3-phase mains voltage into any load voltage. To cater for the wide range of application areas involved,these transformers are essentially available in the same kinds of designs as the single-phase transformers, e.g. Three-phase dry-type transformer: separate winding version Three-phase series transformer: autotransformer winding version Three-phase safety, isolating, mains or insulating transformer: separate winding version In terms of how the 3 coils are connected, there are various options available and each of these provides the transformers with specific properties. The vector group code is composed of the following elements: The upper-case letter indicates the higher-voltage winding (the highest voltage in terms of operation). The lower-case letter indicates the lower-voltage winding. The brought-out neutral is indicated by means of N or n (depending on voltage level). â?¢ The distinctive number indicates the phase angle of the lower voltage in relation to the higher voltage (distinctive number multiplied by 30). The following winding connection options are available Delta: D, d Wye (or star): Y, y Zigzag: Z, z Example: Dyn5 Higher-voltage winding is delta-connected. Lower-voltage winding is star-connected with a brought-out neutral. The lower voltage lags behind the higher voltage by 150�° (5 x 30�°). Unless specifically requested otherwise, the transformers are configured with a double-star connection and a brought-out neutral (vector group Yyn0); for autotransformers the vector group is YNa0. Our three-phase transformer range includes all our standardised types for the 25 30.0 kVA performance range and a frequency of 50/60 Hz
Transformer, High Current Transformer, Ultra Isolation Transformer, Three Phase to Single phase transformer, Control Transformer, furnace Transformers, Special purpose transformers, Electroplating Rectifiers, Reactors, D.C.C.T. etc
Features: Wide range of system current Ratings Hinged terminal cover Various mounting options like DIN rail mounting, Wall mounting Terminal with self lifting screw with dual connection facility giving access from both sides of transformers
Hebei Anmei produce kinds of DIN standard , ANSI standard , AS standard transformer bushing insulator, oil level gauge and transformer accessorise
Product Details It is the insulating sleeve that leads the transformer's internal high and low voltage leads to the outside of the oil tank, which not only insulates the ground as the lead, but also plays the role of fixing the lead. Therefore, the transformer sleeve has the following requirements: (1) it must have specified electrical strength and sufficient mechanical strength. (2) must have good thermal stability, and can withstand the short circuit of the instant overheating. (3) small appearance, small quality, good sealing performance, strong universality and easy maintenance folding.
Transformer bushing insulators are applied as a structure, carrying on conductor through a partition such as transformer tank and insulating it, incorporating the means of attached flange to the partition for medium voltage level. For Entire Range of Bushings Ratings from - 1 Kv to 72 Kv & - 100 Amp. to 10,000 Amp. All Ares Insulator transformer bushing insulators are made of ceramic materials according to IEC 672. Other Transformer bushing custom-made insulators can be supplied upon customer's request and specifications.
Toroids have the best possible shape from the magnetic point of view. The flux path is completely closed so the capabilities of the ferrite are fully exploited. Especially for high permeability ferrites the effect of even a minor airgap in the magnetic circuit can spoil up to 50% of the effective permeability. A further advantage is the very low leakage fi eld which makes it a suitable shape for power and pulse transformers. Ring cores are mainly used for pulse- and wide band transformers and interference suppression coils but also in special power supplies.
Due to the high saturation fl ux density of iron powder (950...1600 mT) these ring cores are very suitable for output chokes carrying high DC currents. Another application is found in lamp dimmers as ballast choke. The cores are made of electrolytic iron powder, mixed with a small amount of resin for insulation. They are coated with polyamide 11 (thickness 0.1 - 0.3 mm). The isolation voltage between core and winding is up to 1500 V.
RM cores were designed for use in high Q, high stability fi lter inductors. Their shape allows economic utilization of surface area on the PCB. The range is standardized in IEC 431 and is available worldwide from many suppliers. The sizes are based on the standard PCB grid distance. RM 5, for instance, fi ts on a board space of 5 x 5 modules of 2.5 mm grid. Coil formers and clips were optimized for automated winding and mounting. The slots provide suffi cient space for leads of windings. Magnetic shielding is not as good as with P-cores, but still effective.
The shape of EI cores, more precisely a core set consisting of an E core and an I core, is magnetically equivalent to an E core set with shorter legs. For typical characteristics, see therefore the E core section.
A disadvantage of the classical P core design has always been the narrow wire slots, making it diffi cult to make strong coil formers with integrated solder pins. In the PTS design this problem is solved by cutting away the sides of both core halves. This creates ample room for wires and coil former fl anges. A range of special PTS coil formers is available but also most standard P core accessories can be used.
U cores, with rectangular crosssections, are easy to produce and are relatively inexpensive. For this reason they are very popular in low cost applications such as interference fi lters and output chokes in radio and TV equipment. There is no real optimization for transformer winding designs and the core is rather bulky. Large U cores like U93 and U100 are suitable for very high throughput powers. They can be stacked to form transformers, capable of handling several kW's in applications such as industrial HF welding.
The ER core design is derived from the original E core and, like ETD and EC cores, has a round centre pole and outer legs with a radius to accomodate round coil formers. These cores are mainly used for power transformers. The round centre pole allows the use of thicker wires while the shorter turn length keeps the copper losses low.
PQ cores, like RM/I cores, have round solid centre poles and round winding areas. On the outside the design is rectangular. Top and bottom of a core set are completely fl at, allowing good thermal contact with heat sinks. PQ cores are mainly used in power conversion. Therefore they are only offered in power materials. For most core sizes matching coil formers are available.
P cores with solid centre poles have approximately a 15% higher effective area than the corresponding P cores with central hole. This makes them more suitable for applications where high fl ux densities are used. This will be the case in power conversion where the P core is still popular mainly because of its excellent magnetic shielding. This helps to avoid EMI problems, especially at higher switching frequencies.
Nicore India Market Leader Toroidal Transformer Core Manufacturers and Suppliers for Industries in CRGO Magnetic Cores. Our Toroidal Transformer core is basically a wound grain-oriented silicon strip containing approximately 3% of silicon to the circle or another form. Which can be in different types and different shapes according to customer wishes and projects. Product Name: Toroidal Transformer Core Material: Cold Rolled Grain Oriented Steel (CRGO) / Cold Rolled Non-Grained Oriented Steel (CRNGO) Available Size: Minimum Outer Diameter: 8mm Maximum Outer Diameter: 1100mm Minimum Inner Diameter: 5mm Minimum strip width: 3mm Using high quality CRGO steels with low iron-loss and high permeability in thickness of 0.05mm, 0.08mm, 0.10mm, 0.23mm, 0.27mm, 0.30mm and 0.35mm. Drawings and Charts: Lead Time: 8 days Steel Grade: Silicon Steel Type
