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SG320 mini solar pump inverter
KEWO SG Series mini type Solar Pump inverter
Solar pump drives advantages:
Kewo sun great series solar pump drive is positioned in environmental-friendly and economical PV market, the product is applicable to PV pumping system, replaces water storage with electric storage and needs no battery modules. The direct current generated by solar modules is input to the inverter and then converted into the alternating current to drive various pumps directly. Additionally, the output frequency is adjustable in real time according to sunlight intensity change.
Fully automatic system using variable speed drive compatible with AC, 3-phase, submersible and surface mount pumps, and high efficiency PMSM Pumps. The system is composed of a PV generator, a pump and a solar pump drive. Based on the design philosophy that it is more efficient to store water rather than electricity, there is no energy storing device such as storage battery in the system. The system is prepared to be combined with a elevated water storage, e.g. water tower or an uphill tank installation.
Specification:
90 to 400VDC input, 110V/160V/220/240V AC output, 0.75/1.5kw.
200 to 400VDC input, 220-240VAC output, 0.75 to 3.7kw
Descriptions and Features
1. Built-in MPPT function, Maximum power point tracking functionality ensures that you get the most power output possible from your solar panel and maximizes the performance of your pump throughout the day.
2. Built-in flow measurement and sensorless flow calculation. And easy to get how much energy generated by this system with generated energy and calculating
3. Advanced function automatic start and stop of the drive when there is enough power available. ( auto/manual)
4. Multiple pump motors with a single drive control standard asynchronous motors as well as more efficient permanent magnet synchronous motors. (PMSM)
5. Best off-grid solution Where electricity is very erratic and unpredictable, farmers need not to depend on grid electricity for their agricultural requirements
6. Remote monitoring With the addition of optional GPRS modules you can monitor and configure drive and application parameters from anywhere via Modbus RTU
7.High efficiency
Protection features
It is provide kinds of protection function for pumps and inverters such as Dry run protection (under load protection), High voltage surge, Low input voltage, Open motor circuit, Short circuit, Over heat, Earth fault, Phase missing, lowest running, water tank level...
Technical specification:
| **Solar pump drive specification when FA-00 set to 1&2 for solar pumping controlling function. | |
| Recommended MPPT voltage range |
Vmpp 131 to 350 VDC for 1S (90V to 350VDC input, 3PH 110 to 220VAC output) Vmpp 280 to 375VDC for 2S ( 150V to 450VDC input, 3PH 220 to 240VAC output) Vmpp 486 to 750 VDC for 4T ( 350V to 800VDC input, 3PH 380 to 460VAC output) |
| Recommended input Voc and Vmpp voltage |
Voc 180(VDC), Vmpp 155(VDC) for 1S model or 110V AC pumps Voc 355(VDC), Vmpp 310(VDC) for 2S model or 220V AC pumps Voc 621(VDC), Vmpp 540(VDC) for 4T model or 380V AC pumps |
| Motor type | Control for permanent magnet synchronous motor and asynchronous motor pumps. |
| Rated output voltage | 3-Phase,110V/160V/220V. 3-phase, 220V/380V/460V |
| Output frequency range | 0~maximum frequency 600Hz. |
| MPPT efficiency | 97%, |
| Ambient temperature range |
G-type for submersible pumps, 150% rated current for 60s, 180% rated current for 2s P type for general pumps, 120% rated current for 60s, 150% rated current for 2s |
| Solar pump control special performance | MPPT ( maximum power point tracking), CVT (constant voltage tracking), auto/manual operation, dry run protection, low stop frequency protection, minimum power input, motor maximum current protection, flow calculating, energy generated calculating and water tank level detected |
| Protection function | Phase loss protection, phase short circuit protection, ground to phase circuit protection , input and output short circuit protection. Stall protection |
| Protection degree | IP20, Air force cooling |
| Running mode | MPPT or CVT |
| Altitude | Below 1000m; above 1000m, derated 1% for every additional 100m. |
|
Standard AC input backup circuit |
CE, Design based on vector control drive S300 and S3200 series, more specification please refer to S300 or S320 vector control drive operation manual |
| Technical specification when it used for speed and torque controlling of motor as FA00 set to 0. | |
| voltage, frequency |
Single phase 220V, 3 phase, 220V,380V, 660V and 1140V. Power 0.75kw to 37kw. |
| Control mode | 0: VF control ; 1: Vectorized VF control ; 2：Open loop vector control 1 ; 3: High performance open loop vector control 2 |
| Maximum frequency | 0-650Hz |
| Multi-functions | PID Control, Carrier Frequency Adjustable, Current Limiter, Speed Search, Momentary Power Loss Restart,16 Step Speed (Max), 3-Wire connection, Slip Compensation, Frequency Jump, DC braking, Upper/Lower Frequency, Torque control, Compatible for PMSM and IM, built in RS485, counting, fault information checking, fully fault protection function, frequency combination reference. |
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