Pump control panel AUTOTRASF 1

automaticmanualelectromechanical

Control panels for 1 pump with autotransformer start type, recommended specifically for squirrel cage motor of medium/high power with high inertia. The autotransformer start type uses the principle of reduced voltage demanding in the motor a reduced current than the current required by a direct start at full voltage. GENERAL FEATURES Power supply 3~50/60 Hz 400V ±10% Transformer 24Vac for auxiliary circuit; Auxiliaries contacts and circuits in low voltage; Normally open contact for start; Normally open contact for minimum level; Selector for Auto-Off-Manual operation (manual stable): Manual: direct operation without controls; Automatic: operation with control by minimum and start contact; Blue led indicating mains supply; Green led indicating motor running; Red led indicating motor overload; Line and autotransformer start contactors in AC3; Autotransformer; Overload thermal relay internally restorable; Timer for autotransformer; Auxiliaries and motor protection fuses; Main switch interlocking door; Metallic box IP55; Ambient temperature: -5/+40 °C; Relative humidity 50% at 40 °C (not condensed).