HV/EHV Breakers Testing
High Voltage (HV) and Extra High Voltage (EHV) circuit breakers are critical in protecting power systems by interrupting fault currents and isolating faulty sections. At SLPL, we provide specialized testing services for HV/EHV circuit breakers to ensure they operate reliably under high fault conditions and comply with industry safety standards.
What is HV/EHV Breaker Testing?
HV/EHV breakers are designed to interrupt fault currents at voltages ranging from 66 kV to 765 kV and beyond. Due to the massive energy levels involved, these breakers require thorough and precise testing to ensure:
Timely fault interruption
Proper insulation integrity
Mechanical and operational reliability
Compliance with grid codes and IEC standards
Tests Conducted on HV/EHV Breakers
- Insulation Resistance Test
- Timing Test
- Contact Resistance Test
- Dynamic Contact Travel Analysis
- Gas Pressure Check (for SF₆ Breakers)
- Trip Circuit Supervision Test
Additional Services
- Overhaul & Refurbishment
- Condition Monitoring
- Detailed Reporting
Key Benefits
🛡️ Enhanced Grid Protection
Assures reliable breaker performance under short-circuit and load conditions.
⚙️ Reduced Equipment Stress
Accurate breaker timing minimizes stress on transformers and other devices.
📉 Lower Downtime Risk
Prevents failures during critical switching by identifying issues early.
🔌 Efficient Load Management
mproves coordination with protection relays for system stability.