Rectifier Transformers of ZS9 ZSF9 ZSZ9 ZSG9 Series

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1. Product Description:

ZS, ZSF,ZSZ, ZSG series rectifier transformers are widely used in controlled siliconrectifier power supply and silicon rectifier power supply. They are mainly usedin aluminum, magnesium and zinc smelting, nitric acid, chemicals, pesticides production,electrolysis, electroplating, and traction etc.
There is electrostatic shielding between primary and secondary coils (networkside to valve side) can be electro statically shielded.

The rectifier transformer with two secondary windings and phasedifference of 30°, 15°, and ±7.5 ° for 6-phase and 12-phase rectification canbe designed and produced for users.

 

2. Product Characteristic:

l  Ambient temperature :-30—40

l  Mean annual temperature is +20and below +20(if it’s water-cooling product,  the highest daily average temperature of cooling-water is +25)

l  Altitude is not more than 1000m.

l  Installation site should be without seriousvibration, bumps and chemical corrosion,

 

3.Specification

Provide product specification code and usage (load type).

Tap range, connection symbol, short-circuit impedance.

Special environment should be informed such as altitude, chemicaldeposition, dirt, corrosive media, etc., for dry-type transformers insulation shouldbe provided.

Special products can be designed and manufactured according to customer’special requirement.

for indoor and outdoor use.

Voltage grade: 6-35kV,

Frequency: 50-60Hz

Capacity: 30-20000kVA

 

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Q:What is the transversal and semi-crossing problem of the transformer?
(3) split impedance: two short-circuit between the low-voltage winding impedance, that is, high-voltage winding open circuit, a low-voltage winding short circuit, another low-voltage winding power supply when the equivalent impedance. Where the reactance component is called split reactance.
Q:What are the malfunctions and abnormal operation of the transformer?
working principle: Transformer is the use of electromagnetic induction principle made of static appliances. When the transformer's original coil connected to the AC power supply, the core will produce alternating magnetic flux, alternating magnetic flux with φ said. The original, the secondary coil φ is the same, φ is also a simple harmonic function, the table for the φ = φmsinωt. By Faraday's law of electromagnetic induction, we can see that the induced electromotive force in the original and secondary coils is e1 = -N1dφ / dt, e2 = -N2dφ / dt. Where N1, N2 is the original, the number of turns of the secondary coil. U1 = j1n1, U2 = E2 = -jN2ωΦ, and the complex value is U1 = -I1 = jN1ωΦ, U2 = E2 = -jN2ωΦ, and the complex value is U1 = Let k = N1 / N2, said the variable ratio of the transformer. U1 / U2 = -N1 / N2 = -k, that is, the ratio of the original value of the transformer and the secondary coil voltage, is equal to its turns ratio and the difference between the original and the secondary coil voltage is π. And then come to: U1 / U2 = N1 / N2 In the case of no-load current, I1 / I2 = -N2 / N1, that is, the original and secondary coil current RMS value is inversely proportional to the number of turns, and the phase difference π. And then available I1 / I2 = N2 / N1 Ideal transformer original, vice coil power equal P1 = P2. Indicating that the ideal transformer itself without power loss. The actual transformer always has the loss, its efficiency is η = P2 / P1. Power transformers are highly efficient and up to 90%.
Q:50 What is the actual power of the transformer? Is 3 phase 50 or 3 together 50
50KVA transformer is the apparent power, the actual power close to 50KW.3 phase power a total of 50KW.
Q:Power transformer primary current and secondary current
For three-phase transformers: Transformer rated capacity = root number 3 X Transformer rated current X Transformer rated voltage So the rated current of the transformer = rated capacity of the transformer / (root 3 X transformer rated voltage) Such as a 100kVA three-phase transformer, the primary voltage of 10kV, the secondary voltage of 0.4kV, then: Its primary current: I1 = S / (1.732XU1) = 100 / (1.732X10) = 5.77 (A) Its secondary current: 2 = S / (1.732XU2) = 100 / (1.732X0.4) = 144 (A)
Q:TN-S system in the transformer side pe line and n-line neutral point how to take
1, this part you can not look at the design rules, the design process is just that principle, should go to check the installation Atlas; 2, the transformer is the neutral point leads to two lines, one to the transformer shell, and then the shell is also grounded; another to the indoor low-voltage cabinet; this is a line after the PEN line, conditions can lead two , But mostly cited a, is shared by PE and N; 3, in the low-voltage cabinet, from the transformer zero leads to the line is divided into two, one neutral line N, the other is to protect the ground PE; generally in order to ground and reliable, where the PE to access the cabinet, The distribution cabinet is installed on the ground network, is directly connected with the ground network, so it is equal to repeat the ground; 4, N line is the work line, for single-phase load, that is, to over-current, or single-phase equipment can not work; and PE line is the protection line, there is no current flow, a current, , And this should pay attention.
Q:Power transformer parameters
First, the transformer technical parameters The main technical parameters of the power transformer are: rated power, rated voltage and voltage ratio, rated frequency, operating temperature class, temperature rise, voltage adjustment Rate, insulation performance and moisture resistance, the main technical parameters for the general low-frequency transformer parameters are: transformer ratio, frequency characteristics, nonlinear distortion, magnetic shielding and electrostatic shielding, efficiency and so on. A. Voltage ratio: Transformer two sets of coil turns are N1 and N2, N1 for the primary, N2 for the secondary. In the primary coil plus an AC voltage, the secondary coil will produce both ends of the induced electromotive force. When N2> N1, its induction The electromotive force is higher than the primary voltage. This transformer is called a step-up transformer: when N2 N2, V1> V2, the transformer is a step-down transformer.
Q:Why does the transformer have three lines
There are three lines is normal, because in addition to a line of fire a zero line, there is a ground wire (ground wire is directly connected to the Earth's line, it can be called a safe circuit, dangerous when it put high pressure directly To the earth, be a lifeline. Transformer is the use of electromagnetic induction principle to change the AC voltage of the device, the main components are primary coil, secondary coil and core (core). The main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage regulator (magnetic saturation transformer) and so on. According to the use can be divided into: power transformers and special transformers.
Q:Rectifier and rectifier transformer
1) rectifier transformer is the rectifier device power transformer. Rectifier equipment is characterized by the original input current, and vice president through the rectifier output after the original DC. Converter is rectifier, countercurrent and frequency conversion of the three working methods in general, rectification is one of the most widely used. Transformer used as rectifier power supply is called rectifier transformer. Industrial rectifier DC power supply is mostly by the AC power grid through the rectifier transformer and rectifier equipment and get. The application of rectification change the most chemical industry. Simply talk about the industrial high-power DC power supply. Civil rectifier transformers are commonly referred to as power adapters, transformers, power converters. 2) rectifier (English: rectifier) ​​is the exchange of alternating current into direct current devices, can be used for power supply devices and detect radio signals. Rectifier can be vacuum tube, ignition tube, semiconductor diodes, SCR, mercury arc and so on. Generally do not contain voltage transformers. Refers to a wider range. Basically most of the electronic products are in use. 3) folk often put the ballast as "rectifier", inductance ballast is a core inductance coil, rectifier is a rectifier device.
Q:Why the new operation of the transformer to be charged
Do the pressure test, measured insulation performance. Although the discharge of a transformer said, but no charging function
Q:Single-phase and three-phase transformer is what it means
Simple point! Common transformer only two high-pressure porcelain is a single phase! There are three high-pressure porcelain is three-phase!

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