Same Day Dispatch as standard within Mainland UK

Specialists in Bespoke Solutions

Control Systems

All of T-T's standard DOL/ASD Controls Panels are manufactured on-site and undergo rigorous testing to ensure that they meet our high standards, with bespoke options available so that you receive optimal performance for your application.

5 Items found

15 30 60 All

5 Items found

15 30 60 All

What is a DOL Control Panel?

Direct On Line (DOL) start is the most simple motor start option, Direct on Line (DOL) starting directly connects an induction motor to a 3-Ph power supply with the addition of a contactor and an overload relay, providing overload protection. 

DOL start is the simplest and most cost-effective system for starting pumps and motors and it is traditionally the most widely used. The induced current is the rotor is high. This results on a peak current on the network which can be 5 to 8 times the nominal current.

They are suitable for startup of small submersible pumps, deep well pumps or booster sets with surface pumps.

DOL control panels need a direct connection to the power supply network, which implies:

  • Start at full voltage and constant frequency 
  • High starting torque
  • Very short acceleration times

Control System FAQs

How does T-T test control systems prior to shipping?
What starting methods are available with T-T's Control Systems?
What is a control panel?
How do I select the right control panel?
How do I maintain a pumping station control panel?
What is a Programmable Logic Controller (PLC)?