Command and Protection Level Panel

Well/Borehole Level Chart

Control and protection of electric pumps used in the supply of water under pressure and irrigation systems, through the extraction of water from wells, artesian wells or other reservoirs.

Presentation

Plastic box 250x200x140 mm in grey ABS RAL7035 with hinge and transparent polycarbonate lid.
WEG contactor and thermal relay.
Level relay for protection in case of lack of water.
Automatic, manual or off operation, controlled by a 3-position switch with protective capsule.
Connection for remote start/stop control (P11-P12) (pressure switch, float switch or others).
Short-circuit protection via circuit breaker.
Overload protection via thermal relay.
Indication of lack of water (red LED on the level relay).
Indication of automatic operation panel (yellow indicator).
Engine on indication (green indicator).
Thermal trip indication (red indicator).
4 glands, for passing connection cables.

How it Works

Once all connections have been made correctly, the thermal relay must be adjusted according to the nominal current of the motor. The panel must show all signals switched off until the control circuit switch is switched to the automatic (AUT) position, at which point the yellow indicator light turns on.

If the start/stop command (P11-P12) closes, the level relay turns on (yellow LED on the level relay) and reads the water level through the probes (in the well, borehole, tank, etc.). If the water is above the maximum level probe, the level relay indicates that it is on (green LED on the level relay) and the pump turns on (green indicator), turning off if the start/stop command opens or if the water drops below the minimum level probe (red LED on the level relay).

With the control circuit switch in the manual position (I), the pump starts, regardless of the status of the start/stop command (P11-P12).

Triggering of the thermal relay due to overload (red light) causes the pump to switch off, regardless of the status of any of the controls.

With the control circuit switch in the manual position, the pump starts regardless of the status of the start/stop control.

Technical Description