- Product Overview
Type: Thyrite® Metal-Oxide Varistor (MOV) Surge Arrester - Rated Voltage: 25 kV (Medium Voltage)
Application:
- Substation & Power Distribution Protection
- Transformer, Switchgear, and Cable Protection
- Industrial & Utility Power Systems
Standards Compliance:
- IEC 60099-4 (Surge Arresters)
- IEEE C62.11
- EN 60099-4
Key Specifications
- Parameter Value Remarks
Rated Voltage (Ur) 25 kV System Voltage: 22 kV
Max. Continuous Operating Voltage (Uc) 20.2 kV rms
Nominal Discharge Current (In) 10 kA (8/20 μs)
Line Discharge Class Class 3 High Energy Capability
Pressure Relief Rating 25 kA rms Safe Fault Current Withstand
Protection Level (Up) ≤65 kV (at 10kA) Low Residual Voltage
Creepage Distance ≥650 mm Pollution-Resistant Design
Housing Material Silicone Rubber UV & Weather Resistant
Product Features
- ✔ High Energy Absorption (Up to 40 kJ/kV Ur)
✔ Explosion-Proof Design (Pressure Relief System)
✔ Seismic Resistance (Withstands 3g Vibration)
✔ Low Protection Level (Enhanced Equipment Safety)
✔ Long Service Life (Minimal Degradation Over Time)
Mechanical & Environmental Data
- Mounting: Flange or Bracket Mounting
- Terminals: M16 Studs (Bolted Connection)
- Weight: Approx. 12 kg
- Operating Temp.: -40°C to +60°C
- IP Rating: IP66 (Dust & Waterproof)
Ordering Information
- ABB Part No.: 1SAZ321201R1001
- Model No.: TA75DU-25
- Packaging: Wooden Crate (Single Unit)
