Solutions za Uzalishaji wa Umahiri na Upatikanaji wa LV CT

I. Mazingira ya Suluhisho​
Katika matumizi yenye ufanisi wa kiwango kikubwa kama mitandao ya umeme maalum, upimaji wa nishati ya kumbukumbu, na uzazi wa umeme katika viwanda, transforma za umeme wadogo (LV CTs) za kawaida hupata changamoto kama ukosefu wa ufanisi, mzunguko mkubwa wa joto, na ustawi mdogo wa muda mrefu. Ili kupata tahadhari ya ufanisi wa kiwango cha 0.2S/0.5S, suluhisho hili linapendekeza muktadha wa kuboresha kwa kutosha kwa transforma za LV CTs kwa njia ya ubunifu wa vitu vya msingi na ubunifu wa muundo.

​II. Mazingira ya Teknolojia ya Kizuri​

1. ​Vitambulisho Vya Kiwango Kikubwa vya Uwezo wa Kutoka​
   • Nanocrystalline/Amorphous Alloy Ultra-Thin Strips:
   Mifumo yamefungwa kwa kutumia strip za nanocrystalline au amorphous alloy ambazo ni za urefu wa 0.02–0.025mm, kufikiwa kwenye uwezo wa kwanza (μi) wa zaidi ya 1.5×10⁵ H/m. Hii inafanya kurejelea current ya kutambua na kukidhi makosa ya uwiano/lengo.
   • Magnetic Domain Optimization:
   Annealing ya magnetic field ya mwendo unaoelekea kuondokana na stress ya mifumo, kuboresha usawa wa flux, na kupunguza malipo ya hysteresis chini ya harmonics za kiwango kikubwa.
2. ​Magnetic Shielding na Muundo wa Anti-Interference​
   • Multi-Layer Composite Magnetic Shielding:
   Viwango vya dual Permalloy + copper mesh vilivyofungwa kujitolea kwenye mifumo vinakuzuia interferences za AC magnetic field za nje na kupunguza athari za DC bias.
   • Orthogonal Winding Process:
   Teknolojia ya orthogonal winding segmented kwa secondary windings inapunguza capacitance ya distributed na leakage inductance, kuboresha frequency response (accuracy deviation < ±0.1% ndani ya bandwidth ya 1–5kHz).
3. ​Temperature Compensation na Signal Processing​
   • Dynamic Temperature Compensation Circuit:
   Sensors za NTC/PTC za high-linearity zilizofungwa zinafanya temperature drift compensation ya muda wa mifumo na resistance ya windings (temp. drift coefficient ≤ ±10 ppm/°C).
   • High-Stability Sampling Resistor:
   Resistors za metal foil zenye low-drift (ΔR/R < ±5 ppm/°C) na four-terminal Kelvin connections huaminisha accuracy ya conversion ya current-to-voltage.
4. ​Encapsulation na Insulation Reinforcement​
   • Vacuum Potting Process:
   Process ya vacuum potting ya epoxy resin ya high-purity ya 10⁻³ Pa inapunguza bubbles na internal stress, kuboresha nguvu ya mekani ya na thermal stability.
   • Multi-Layer Insulation Architecture:
   Polyimide film + silicone composite interlayer insulation huafikia dielectric strength >15 kV/mm na partial discharge <5 pC (@1.5Ur).

​III. Fursa Kubwa​

​IV. Hadhira za Matumizi​
Suluhisho hili linapatikana sana:
• ​Power Metering:​​ Smart meters, distribution network automation systems (compliant with IEC 61869-2 standard)
• ​Renewable Energy Monitoring:​​ High-precision current sampling in PV inverters and energy storage systems
• ​Industrial Control:​​ Fault current detection in VFDs and motor protection devices
• ​Lab Standards:​​ Serving as 0.2S-class standard transformers for value transfer