SZ9-200~2500/11KV Three Phase On-load Pressure Regulating Power Transformer

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SZ9-200~2500/11KV  three phase on-load pressure regulating power transformer is suitable for distribution saatem with 10KV,50HZ for industrial and mine enterprise ,power illumination .it confirms to GB1094<power transformer> standard.

SZ9-200~2500/11KV  three phase on-load pressure regulating power transformer.can ajust automatically volatage underload condition according to electric grid voltage fluctuation to improve power supply quality,its performance parameter reaches international advanced level of 90s similar product,it has strongpoint of advanced workmanship,novel design.nice appearance and less groung demand.

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Q:How long does it take to restart the transformer?
If the transformer is shut down for a month or on hold, the trial is stopped for more than 6 months before the commissioning? A: The transformer shut down for a month, before the resumption of power transmission should be measured insulation resistance, qualified to be put into operation.Post or outage for more than 6 months of the transformer, should be done before the insulation resistance and insulation oil pressure test Dry and cold areas of irrigation and drainage dedicated transformer, the suspension period may be appropriate to extend, but not more than 8 months
Q:50kva transformer price
2, Transformer (Transformer) is the use of electromagnetic induction to change the principle of AC voltage 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 purpose can be divided into: power transformers and special transformers (electric furnace change, rectifier, frequency test transformer, voltage regulator, mine transformer, audio transformers, IF transformers, high-frequency transformers, impact transformers, instrument transformers, electronic transformers , Reactors, transformers, etc.). Circuit symbols commonly used as the beginning of the number. Example: T01, T201 and so on.
Q:Why the new operation of the transformer to be charged
Transformer to charge? Can I charge it? You should make a mistake
Q:Transformer secondary side is high pressure or primary side is high pressure
Step-up transformer secondary side is the high-pressure, step-down transformer primary side is high pressure.
Q:50KVA transformer each phase current maximum band
Hello there: - ★ 1, three-phase transformer rated output current = transformer rated capacity ÷ (voltage × follower 3). This current is apparent current, marked on the transformer nameplate. - ★ 2,50KVA transformer, each rated output current = 50KVA ÷ (400V × 1.732), equal to about 72A. Note that the secondary voltage of the power transformer is 400V instead of 380V. - ★ 3,50 KVA transformer rated current per phase is about 72A, "the maximum energy can be large" according to the ambient temperature, cooling conditions may be. Generally below the rated current, can be long-term operation.
Q:Two different impedance of the transformer, parallel load how to allocate?
The impedance voltage is equivalent to the power supply resistance. Two impedance voltage is not equal to the parallel operation of the transformer, the impedance of the load distribution of small, low impedance voltage transformer load distribution. Basically inversely proportional. Generally the same type of transformer, the impedance voltage and capacity is basically inversely proportional to the large transformer impedance voltage is smaller than the small transformer impedance voltage. Parallel operation after the load distribution is basically proportional to the capacity of the transformer. But this ratio is not exactly the same, so even if the same type of transformer, the capacity difference is too large (more than 3 times), it is not allowed to run side by side. If it is different types of transformers, the impedance voltage and capacity is not completely inversely proportional to the capacity. The load distribution is even worse.
Q:Transformers, broken, how to repair
Some of the transformer buried inside an insurance, first look at the said
Q:Transformer winding maximum temperature at?
National standard (oil-immersed transformer) the top of the oil temperature is generally adjusted at 85 ℃, if more than 85 ℃, to analyze the reasons: 1, if it is because the room temperature is too high, heavy load and other slowly rising, you can continue to run more than 85 ℃, but The maximum temperature can not exceed 95 ℃ (when the transformer core core or winding is 105 ℃, will seriously damage the insulation, shorten the life or burn the transformer); 2, the transformer running at 85 ℃, the transformer oil temperature and room temperature difference can not exceed 55 ℃, if it is over, may be a serious overload, the voltage is too low, the current is too large, internal failure, etc., continue to run will seriously damage the insulation, shorten the life or burn the transformer.
Q:What are the ways of protecting the transformer?
First, the gas protection: to protect the transformer internal short circuit and oil surface failure. Second, differential protection, current quick-break protection: to protect the transformer winding or lead-out phase of the phase-to-phase short circuit, large ground current system grounding short circuit and winding turn short circuit. Third, over-current protection: to protect the external phase short circuit, and as a gas protection and differential protection (or current quick-break protection) backup protection. Four, zero sequence current protection: protection of large ground current system external single-phase ground short circuit. 5, overload protection: to protect the symmetrical overload, only acting on the signal. Six, over-excitation protection: to protect the transformer over-excitation does not exceed the allowable limit.
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)

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