د ژوندچنګي امنیت او گلوبال مطابقت تضمین کولو د بیروني ولټرانسفورمر (VT/PT) حل

1. Core Principle: Rooted in Safety and Compliance
   دا حل د کاروونکو ته یوازې غیر مخ و او پایداره ډول د بیرونی ولټاژ د سړکو حلونه ورکوي چې پورې د جهاني او ناحیائي قوانینو سره موافق وي. دا د کارکوونکو، د اوسیلو او د شبکې امنیت لپاره د ټولو عمرې (د ډیزاین او د پروډکشن څخه تر د فیلډ د نصب، عملیات او نگهداري) پورې د شدید عملیاتي شرایطو ته ګټوره پروته کوي.
2. Strict Adherence to Authoritative Standards
   دا اوسیل د لوړوالی د جهاني، ملي او صنعتي معیارونو سره موافق دی، په شامل دي:

• ​International Standards:​​ IEC 60044-2/-3/-7, IEEE C57.13
• ​Chinese National Standards:​​ GB/T 20840
• ​Industry Specifications:​​ Lightning impulse withstand voltage (LI) and switching impulse withstand voltage (SI) exceed the system's maximum overvoltage peaks.
  هر واحد د ډول ټیسټونه د موثق ادارو (مثلاً CNAS-accredited laboratories) لخوا راجرزیږي، او د ټیسټ راپورونه د ورکولو لپاره موجود دي.

1. Comprehensive Safety Design Assurance

1. ​Superior Insulation Performance:​​
• Main & Longitudinal Insulation: Composite insulation structures use with withstand voltage strength significantly exceeding system limit overvoltages (including LI/SI surges), eliminating breakdown risks.
• Insulation Materials: Resistant to extreme environments (-40°C to +70°C, humidity >95%), ensuring stability throughout the 30-year lifespan.
2. ​Intrinsic Explosion-Proof Mechanism:​​
• Oil-Immersed PT Explosion Protection: Equipped with high-strength explosion-proof diaphragms and directional pressure relief channels, directing 100% of fault pressure to safe areas.
• Non-Oil-Filled Equipment: Employs solid insulation or SF6 gas-sealed structures, achieving maintenance-free explosion protection.
3. ​Multi-Layer Fault Protection:​​
• Internal Arc Protection: Meets the highest IAC AFLR class internal arc fault protection standard, directing arc energy release to prevent equipment rupture.
• Enclosure Protection: IP67 rating prevents ingress of dust, water, and small animals.

1. Safe Operation, Maintenance & Grounding Protection

1. ​Dual Grounding System:​​
• Independent dual grounding terminals provided for metal base and enclosure, using copper grounding cables with cross-sectional area ≥50 mm².
• Grounding system verified for dynamic and thermal stability, capable of withstanding 20 kA/1s short-circuit current impact.
2. ​Proactive Safety Warning:​​
• "High Voltage" hazard warning label applied on equipment body (compliant with ISO 7010 standard).
• Safety fencing and interfaces for audio-visual alarms provided at installation points.

1. Full Lifecycle Compliance Certification
   The equipment carries comprehensive mandatory certifications and access permits:

​Solution Value​
Safety Margin Exceeding Standards + Global Compliance Guarantee = Zero Legal Risk & Zero Safety Incidents
Through safety-by-design principles, end-to-end certification coverage, and proactive fault protection mechanisms, this solution provides worry-free assurance for high-risk scenarios like power grids, railways, and energy infrastructure.