Three Phase - Industrial Grade Protection - 100 to 5000 kVA Features Oil-Immersed Magnetic Induction Design Step-Less Automatic Voltage Control Wide range of permissible input voltage windows (±10% to ±30%) ±1% Output Voltage Accuracy Virtually Maintenance Free Inbuilt TVSS - Transient Voltage Surge & Spike Suppression Independent Phase Control High Overload Capability Lightning Surge Protection Over / Under Voltage Indication Voltage & Current Metering Optional Main System Switch Board