New coils increase solenoid valve energy efficiency by 80 %
EDITOR ’ S CHOICE KICK AND DROP COILS
BÜRKERT
New coils increase solenoid valve energy efficiency by 80 %
New coil technology for solenoid valves can increase energy efficiency by up to 80 %. Bürkert ’ s Kick and Drop valve coils save significant cost by reducing energy use and extending service life . The increased efficiency also optimises environmental sustainability . With a low maximum operating temperature , the coils enhance safety and remove the potential of electrical overheating . The 3-in-1 design , covering various voltage inputs , also streamlines inventory management .
The new Kick and Drop coils can be used across a range of Bürkert solenoid valves , including pneumatic , plunger , servo-diaphragm , and servo-piston , as replacement demand or retrofit . Covering a variety of inrush and holding powers , each 3-in-1 coil covers DC , AC 50Hz and AC 60Hz , spanning 24V to 240V inputs , this flexibility reduces storage and handling requirements .
The device optimises energy efficiency by utilising a high initial voltage to move the valve into position . After just 500ms , the desired position is reached , and the coil wattage is reduced to a lower level that holds the valve position . This makes the coils well-suited to applications with long duty cycles . The increased ‘ kick ’ force is also useful for applications where the valve is required to open against a high-pressure differential .
The design includes two coil windings encapsulated in a single epoxy coil , with both coils powered in series . The first winding delivers the ‘ kick ’ that moves the plunger , while the second winding ensures the ‘ drop ’, and holds the plunger in position . The overexcited inrush winding generates a very high starting power , creating a strong magnetic field using 85 % power to quickly move the plunger , but just 15 % to hold it in position . In contrast , a standard valve coil produces a continuous magnetic field to move the valve into position and hold it over time . As a result , Kick and Drop coils can minimise the overall energy demand by up to 80 %.
Reducing solenoid valve energy use
The new Kick and Drop coils can be used across a range of Bürkert solenoid valves , including pneumatic , plunger , servodiaphragm , and servopiston , as replacement demand or retrofit .
can also make a significant contribution to improved sustainability . Taking an installation of 8,000 solenoid valves , Kick and Drop technology can save 114MWh per year and a CO2 reduction of 830 tons , based on 485 g / KWh .
Decreasing the continuous current requirement also extends the coil ’ s lifespan , reducing the total cost of ownership . For water applications , the Kick and Drop coils can also help to prevent the challenge of calcification , caused by hard water with high lime breakdown . Higher temperatures speed up the lime breakdown process , but
below 60 ° C , the process is so slow that it doesn ’ t create a problem . The Kick and Drop coils only heat up to a maximum of 55 ° C , which removes the challenge .
As the coils only heat up to this lower maximum temperature , this increases safety by reducing the risk of burns . Kick and Drop coils can be used in insulated systems or housings , and the low operating temperature also prevents electrical overheating , with testing according to EN 60730-2-8 .
The coils provide these advantages within a compact footprint , comparable to a standard coil , and they can also be used in close proximity to other electrical equipment as a result of noiseless EMC ( electromagnetic ) compliance .
For further information , please visit www . burkert . co . uk
8 PECM Issue 63