Directo

Electromechanical control panel DOL start

Electrical panels suitable for starting small submersible pumps or submerged pumps or for booster sets with surface pumps.

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General technical features

Power supply 1 ~ 50 / 60Hz 230V ± 10%
(DIRECTO-Mono);
Power supply 3 ~ 50 / 60Hz 400V ± 10% (DIRECTO-Tri);
Normally open input for start command;
Normally open input for minimum level / pressure control;
Auto-0-Manual Selector (stable):
- Manual: direct operation without controls;
- Automatic: operation controlled by min input and start input;

Blue LED for power on;
Green LED for motor running;
Red led for motor overload alarm;
Line contactor in AC3;
Thermal relay internally resettable overload;
Transformer 24 Vac for auxiliary circuit;
Inputs and control circuits at low voltage;
Auxiliary and motor protection with fuses;
Isolator;
Box in ABS up to 11 kW, metal from 15 kW, IP55;
Ambient temperature: -5 / + 40 ° C;
Relative humidity 50% at 40 ° C (non-condensing).

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PDF datasheet

Highlights

Direct on line start type

The direct starting system is perhaps the simplest and most traditional and consists in connecting the engine directly to the power supply network, thus performing a full voltage start. It is often abbreviated with DOL (Direct On Line).

The DIRECTO electrical panel provides for direct connection to the power supply network which implies:
• Starting at full voltage and constant frequency
• High starting torque
• Very short acceleration times on average.

Applications

Direct starting is the simplest and cheapest way to start electric pumps or motors and is traditionally the most used. The induced current in the rotor is high. The result is a current peak on the network which can be 5 to 8 times the rated current. They are suitable for starting small submersible pumps or submersible pumps or for booster systems with surface pumps.

Components

DIRECTO electrical panels are made in plastic or metal boxes with a minimum protection degree of IP55.
Each panel has indicator lights indicating the presence of voltage, thermal intervention and motor running, a manual or automatic selector, a switch disconnector with door locking system.
A terminal block allows the connection to the utilities and external commands such as pressure switches, floats etc.