The Grundfos SQE is a small and compact submersible multi-stage pump. The motor of the SQE pump is a permanent magnet motor with a micro frequency converter ensuring optimum e”ciency. The built-in frequency converter features protective functions and soft-starting, which reduces starting current and gives smooth and steady acceleration and dry running protection. The SQE pump is handy and user-friendly due to its low weight and 3-inch diameter.
Features:
1. Excellent starting capabilities
The soft starter minimises the risk of wear & tear on the pump and prevents overloading of the mains during start-up. Its soft start system also reduces water hammering, light flickering and other electrical disturbances.
2. Over-voltage and under-voltage protection
The integrated protection prevents damage to the motor, in case the supply voltage moves outside the permissible voltage range.
3. Overload protection
The SQE eliminates the need for external motor protection. If the pump is exposed to a heavy load the motor will automatically reduce its speed, or if the pump is blocked it automatically stops.
4. Over-heating protection
As an extra protection, the electronic unit has a built-in temperature sensor. When the temperature exceeds a critical limit, the pump is stopped and when the temperature has dropped, the pump automatically starts.
5. Protection against up-thrust
The SQE is fitted with an up-thrust bearing, protecting both pump and motor against up-thrust, thus, preventing breakdown during the critical start-up phase.
