Grounding device

Description The flexible grounding system combines resonance grounding and low-resistance grounding technologies to allow seamless switching between grounding modes depending on fault conditions. It protects personnel and equipment by limiting fault current and supports reliable power supply continuity.

Key features

• High reliability: real-time reduction of fault current to lower risk of injury and equipment damage.
• Rapid fault isolation: fast identification and disconnection of the faulty line to prevent fault propagation.
• Accurate line selection: integrated line-selection tripping unit ensures precise disconnection of the faulty section.

Technical specifications

• Voltage range: 6 kV – 35 kV
• ASC adjustment methods: tap-change / phase-controlled / capacitor tuning
• ASC capacity range: 100 kVA – 4400 kVA
• Volt-ampere characteristics: linear within 0–110% of rated voltage
• Grounding response time: < 10 μs

Control and timing parameters

• Flexible ground resistance device control: vacuum contactor control
• Resistance input time: 0.1 s – 10 s