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Star / Delta Starter Panel (AVST1)

General Description

Electromechanical star/delta starter for one three-phase deep well or submersible pump with thermal protection.

Start the panel by turning the door interlocking general switch, a blue light will indicate that the panel is operating.

The pump starts when a float switch or a pressure switch closes the contact. The ammetric overload protection is manually restorable.

It is possible to customize the panel by adding accessories according to requirements.

Features

Electromechanical control panel star/delta starter; Input voltage 3~50/60 Hz 400V ±10%;
Very low voltage input for pressure switch or float switch;
Very low voltage input for external minimum level pressure switch or float switch for dry running protection;
Transformer 400V/24V for auxiliary circuits; Selector for AUTO-OFF-MANUAL motors operation (MANUAL temporary on request);
Blue light for power on;
Green light for motor operating;
Red light for motor protection alarm;
Line contactor in AC3;
Star contactor in AC3;
Delta contactor in AC3;
Timer for star/delta exchange adjustable 0÷30";
Thermal relais for motor overload protection with adjustable scale internally restorable;
Auxiliary circuits protection fuse;
Motor protection fuses;
Main switch with door interlock;
Thermoplastic box up to 15HP;
Metallic box from 20HP to 300HP;
Output with cable holder;
Protection IP55;
Ambient temperature: -5/+40 °C;
Relative humidity 50% at 40 °C (not condensed).