SZ series miniature substation transformers are widely used in power stations, industrial and mining enterprises, bitcoin mines, user distribution stations and other power and distribution systems with a power distribution capacity below 35kv. The main rated capacity of this transformer is: 1000kva~3500kv.
1. The SZ Series OLTC 1000kva Miniature Substation Transformer can be tested only after all the test items are qualified.
2. The SZ Series OLTC 1000kva Miniature Substation Transformer should also be checked before the trial operation.
3. SZ Series OLTC 1000kva Miniature Substation Transformer does 5 shock tests (closing test).
4. The no-load running time is related to the capacity of the SZ Series OLTC 1000kva Miniature Substation Transformer, generally not less than 24 hours.
5. After the no-load running time is completed, the SZ Series OLTC 1000kva Miniature Substation Transformer will re-load.
6. Oil leakage of iron castings The main reason for oil leakage is that there are sand holes and cracks in the iron castings. For crack leakage, drilling crack prevention holes is the best way to avoid stress extension.
7. During treatment, lead wire can be driven into the leak point or riveted with a hand hammer according to the condition of the crack. Then clean the leaking point with the material and seal it with the material.
1. The iron core of SZ Series OLTC 1000kva Miniature Substation Transformer is made of high-quality oriented cold-rolled silicon steel sheet, and is manufactured by the latest technology of stepped seam, which effectively improves the distribution of magnetic flux density inside the iron core, reduces noise, and reduces loss.
2. SZ Series OLTC 1000kva Miniature Substation Transformer uses high-quality copper wires to meet the requirements of surface quality, insulation and geometric dimensions of the wires; high-quality oxygen-free copper materials are selected, that is, copper materials with low resistivity.
3.On the premise of ensuring the effective section of the iron core, increase the number of stages of the iron core and reduce the diameter of the iron core, thereby reducing the average turn length of the coil, and at the same time adopt a reasonable insulation structure, reduce the winding coefficient, and reduce the assembly tolerance , to achieve the purpose of reducing the average number of turns of the coil, and finally to reduce the winding length of the coil and reduce the load loss of the transformer.
4. All components used in the SZ Series OLTC 1000kva Miniature Substation Transformer are double-sealed to prevent leakage. The seals used are all made of high-quality cork rubber, which can effectively prevent photoaging, electrical aging and thermal aging.
5. The SZ Series OLTC 1000kva Miniature Substation Transformer also features a “telemetry” signal thermometer and pressure relief valve.
6 The perfect design of SZ Series OLTC 1000kva Miniature Substation Transformer can ensure no hanging cores on site.
7. SZ Series OLTC 1000kva Miniature Substation Transformer has the characteristics of high reliability, high impedance, low loss, low noise, low temperature rise, low partial discharge, no leakage and so on.
A. Whether the load current is within the rated range, whether there is a drastic change, and whether the operating voltage is normal.
B. Whether the oil level, oil color, oil temperature exceeds the allowable value, and whether there is oil leakage.
C. Whether the porcelain bushing is clean, whether there are cracks, damage and stains, discharge, and whether the contact terminals are discolored or overheated.
D. Whether the discoloration of the silica gel in the moisture absorber has been saturated, and whether the sound of the transformer is normal.
E. Whether there is air in the relay, whether it is full of oil, whether the glass of the oil level gauge is broken, and whether the diaphragm of the explosion-proof pipe is complete.
F. Whether the SZ Series OLTC 1000kva Miniature Substation Transformer shell, arrester, and neutral grounding are in good condition, and whether the transformer oil valve is normal.
G. Whether the doors, windows, shutters, iron mesh guardrails and fire fighting equipment between the SZ Series OLTC 1000kva Miniature Substation Transformer are in good condition, and whether the transformer foundation is deformed.
When the SZ Series OLTC 1000kva Miniature Substation Transformer is on duty, the inspection is performed once per shift, and it can be inspected once a week when it is not on duty.
In case of severe load changes, abnormal weather, new installations and transformer overhauls, special inspections should be added, and the cycle is not fixed.
Use automated equipment to ensure product size accuracy. Provide up to two years of maintenance services to provide you with high-quality after-sales service.
The flexible electrical scheme, multiple combination schemes.