Function and Usage
NSK series three-phase dry-type transformers are suitable for circuits with AC 50Hz, rated power supply voltage of 500V and below, and rated capacity of 5kVA and below, as control power supplies and lighting power supplies for machine tools, machinery equipment, low-voltage complete switchgear, and electrical drive control equipment. Conforms to the standard: Q/ZT 525.
Detailed Parameters
| Parameter Category | Parameter Item | Parameter Value |
|---|
| Normal Operating Conditions and Installation Conditions | 3.1 | Altitude does not exceed 2000m; |
| 3.2 | The upper limit of ambient air temperature is 40℃, the average temperature within 24 hours does not exceed 35℃; the lower limit of ambient air temperature is -5℃; |
| 3.3 | When the highest temperature is 40℃, the relative humidity of the air does not exceed 50%, and at lower temperatures, higher relative humidity can be allowed, for example, up to 90% at 20℃. Special measures should be taken for occasional condensation caused by temperature changes; |
| 3.4 | The installation environment should be well-ventilated, free from pollution, corrosive gases, dust, flammable media, combustible materials, and flammable gases; it should have rain, water, and snow protection facilities and should be free from steam; |
| 3.5 | The installation location should have no vibration and impact; |
| 3.6 | The power supply voltage waveform is a sine wave, and the three-phase power supply voltage should be symmetrical; |
| 3.7 | The total harmonic content of the input power supply voltage does not exceed 5%, the even harmonic content does not exceed 1%, and the total harmonic current content in the load current does not exceed 5%. |
