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
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
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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
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.
Toroidal magnetic cores are made of a Fe-based thin (20 microns) nanocrystalline ribbon and have low loss, high induction of saturation, high operating temperature (up to 150 C), high magnetic permeability. Magnetic cores have a negative temperature coefficient of losses that provides stabilization mode transformer temperature.
Application in power high- frequency transformers push-pull,bicyclic SMPS, DC-DC converters, audiotransformers.
High permeability provides good electromagnetic connection of windings and low leakage inductance values.
HIGHLIGHTS OF THE MATERIAL:
Induction amplitude, Bm (25 C) 1,2 T
Induction amplitude, Bm (90 C) 1,1 T
Curie temperature, Tc 570 C
Magnetostriction less than 0,5 x10 ^ -6
Magnetic Permeability (100 kHz) - up to 20,000
Co-based amorphous core in plastic container
1. high permeability
2.Thickness (1820 mkm)
3. Annealing in transverse field, permeability more than 100000, very low loss, flat hysteresis loop
4. Common-mode filter chokes, current transformers, including for precise electronic electricity meters, protective cutout, High Frequency power transformers in SMPS, audio transformers, etc.
5.D from 4-32mm
Ribbon wound magnetic core is placed into hard protective container of glass-polyamide and mechanically fixed with silicone sealant.
Co-based amorphous ribbon wound magnetic core is placed into hard protective container of glass-polyamide and mechanically fixed with silicone sealant.Size veries:outer D =4-32mm.The container has rounded edges and is designed for direct winding of a thick wire. The container provides reliable mechanical protection and preservation of amorphous material's properties. All materials comply with UL94V-1 / 0.
1. High permeability
2.Thickness (1820 mkm)
3. Annealing in transverse field, permeability more than 100000, very low loss, flat hysteresis loop
4. KEY FEATURES OF THE AMORPHOUS MATERIAL:
Induction amplitude, Bm (25C) 0.59 T
Induction amplitude, Bm (90C) 0.50 T
Curie temperature, Tc 220C
Operating temperature range -60C ... 100C
Magnetostriction less than 0.110^-6
Typical permeability (10 kHz) - 120 000
Typical permeability (100 kHz) - 35 000
Co-based amorphous core in plastic container
1. high permeability
2.Thickness (18-20 mkm)
3. Annealing in transverse field, permeability more than 100000, very low loss, flat hysteresis loop
4. Application: Common-mode filter chokes, current transformers, including for precise electronic electricity meters, protective cutout, High Frequency power transformers in SMPS, audio transformers, etc.
KEY FEATURES OF THE AMORPHOUS MATERIAL:
Induction amplitude, Bm(25C) 0.62 T
Induction amplitude, Bm(90C) 0.54 T
Squareness ratio Br/Bm (@ 100 kHz, 80 A/m) at least 0.90
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.
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