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MGFlex CRFlex systems optimised for solar power Performance curves The following examples of performance curves show the MGFlex motor paired with the three most suitable CR pumps. This provides the best pump efficiency. Technical data Power supply to pump Energy source Start/Stop control Sensor connection Power Switch on/off or from DC to AC Ambient Temperature Relative humidity Motor protection Leaking current Power factor Earth-leakage circuit breaker Installation outdoor Enclosure class Insulation class EMC Compatibility Sound pressure level Marking The CRFlex is developed by Grundfos to get the most out of the sun. It incorporates a 2-pole motor with an integrated frequency converter that enables the MGFlex motor to run at high efficiency over a wide speed range. • Powerinput(P1)of70W–1250W • Motorspeedrange1000–3400RPM • Maximuminputcurrentof5A • EnclosureclassIP54 The motor is compatible to both DC and AC voltage supply. • 110–415VDC,PE • 1x220–240V,–10%/+6%,50/60Hz,PE – renewables dry motor 110 – 415VDC, PE 1 x 220 – 240V, –10%/+6%, 50/60Hz, PE Solar Module Generator Grid Digital input to control the start/stop of the motor The motor electronics allows one external sensor connection. The motor can supply max 24VDC 40mA to this connected device. CRflex 3-9 QQ [m3/h] [GPM] 28 26 24 5 22 20 4 18 16 14 12 10 8 6 4 2 00 15 ft 35 ft 65 ft 130 ft 6 3 2 1 195 ft Maximum 4 times per hour During operation: During storage/transport: Maximum 95% CRflex 5-5 Built-in motor protection against - overvoltage and undervoltage - overload - over-temperature < 3.5 mA 0.97 If the pump/motor is connected to an earth- leakage circuit breaker (ELCB) is as an additional protection, this circuit breaker shall detect AC fault currents, pulsating DC fault currents and smooth DC fault currents. The motor/pump must be installed under shield to avoid direct sunlight, rain, hail and snow. IP 54 F (IEC 85) EN 61 800-3 < 63 db(A) CE QQ [m3/h] [GPM] 12 55 50 45 40 8 35 30 6 25 20 4 15 10 5 00 0.0 0 0.1 0.2 0.3 200 0.4 0.5 0.6 400 0.7 0.8 0.9 600 1.0 1.1 800 1.2 230 ft 1.3 1.4 1000 1.5 1.6 1.7 P1 [hp] -4°F to +104°F (-20°C to +40°C) -40°F to +140°F (-40°C to +60°C) 1200 P1 [W] 15 ft 35 ft 50 ft 65 ft 80 ft 100 ft 10 2 130 ft 1.3 1.4 1000 0.0 0 0.1 0.2 0.3 200 0.4 0.5 0.6 400 0.7 0.8 0.9 600 1.0 1.1 800 1.2 1.7 P1 [hp] P1 [W] 15 ft 1.5 1.6 1200 CRflex 10-2 QQ [m3/h] [GPM] 20 85 18 80 75 16 70 65 60 55 50 45 40 8 35 30 25 20 15 10 5 00 35 ft 50 ft 65 ft Solar surface CR pumps with the MGFlex motor, from an installation in South Africa 80 ft Specify your solar surface pump online You can draw on a wide range of expert knowledge, documentation, installation and service information via Grundfos’ online sizing tool WebCAPS at www.grundfos.com 14 12 10 6 4 2 0.0 0 0.1 0.2 0.3 200 0.4 0.5 0.6 400 0.7 0.8 0.9 600 1.0 1.1 800 1.2 1.3 1.4 1000 1.5 1.6 1.7 P1 [hp] 1200 P1 [W]PDF Image | Solar Surface Pumps by Grundfos
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