Deye SUN-15/20K-SG05LP3-AU-SM2 Low Voltage Three Phase Hybrid Inverter - CEC Approved
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The Deye SUN-15/20K-SG05LP3-AU-SM2 is a three phase hybrid inverter for larger homes and commercial sites that still runs on affordable 48V batteries.
Available as a 15kW or a 20kW unit. Both take standard 48V battery modules rather than a high voltage stack, and both have two battery inputs so a large bank can be split across them.
Your solar powers the site first, anything spare charges the battery, and only what is left after that goes out to the grid. When the grid drops out the inverter switches you over on its own. Approved by the Clean Energy Council and backed by a 10 year Australian warranty.
Big output, ordinary batteries
Up to 20kW of three phase output while still running on the same 48V modules used across the smaller Deye range.
Very fast charging
Up to 350A of charge and discharge current across two battery inputs, so a large bank fills inside one good solar day.
Serious solar capacity
Takes up to 40,000W of panels, which leaves plenty of headroom for winter and overcast days.
Where this one fits
Most three phase inverters at this size expect a high voltage battery, which means a more expensive stack and a narrower choice of brands. This range takes ordinary 48V modules instead, so you get commercial scale output while keeping the storage side affordable and easy to source.
That makes it a good fit for a large home, a farm, a workshop or a small commercial site, particularly where you may want to expand the battery bank later.
How it works day to day
During daylight the inverter sends your solar straight to whatever is running on site. Anything you are not using goes into the battery rather than being exported for a small feed in payment. Once the battery is full, the surplus then flows out to the grid.
After dark it draws that stored energy back out, so your own solar is still doing the work long after the sun has gone.
Power when the grid goes down
An automatic transfer switch is built in, with a 70A passthrough, so a large part of the site can sit behind the backup side rather than a handful of chosen circuits.
There is also a dedicated generator input rated at 24A, so a generator can carry the site and charge the battery through a long outage.
Adding more solar later
The inverter can AC couple to micro inverters or an existing grid tied solar system, so a second array can sit well away from the inverter without long DC cable runs back.
Approved for Australian sites
Clean Energy Council approved and built to AS/NZS 4777.2, so it can be signed off by your installer and counted toward government incentive schemes. IP65 rated for outdoor mounting.
Main Features:
Commercial output on low voltage storage. 15kW or 20kW of three phase output while still using standard 48V battery modules.
Two battery inputs. Split a large bank across two inputs rather than forcing everything through one.
Very high charge current. 280A on the 15kW and 350A on the 20kW, so even a big bank fills in a day.
Large solar capacity. Up to 40,000W of panels across two trackers with two strings each.
70A backup passthrough. Enough to back up most of a site rather than a few essential circuits.
Generator ready. A dedicated 24A generator input for long outages on rural properties.
Parallel to 10 units. Run up to ten inverters together, on grid or off grid.
Rated for outdoors. IP65 sealed, so it can go on an external wall without extra weatherproofing.
Quick Specs:
- Rated AC output: 15,000W / 15,000VA (15kW model) or 20,000W / 20,000VA (20kW model)
- Output: three phase 230/400V or 240/415V 50Hz, 3L + N + PE
- Rated AC output current: 21.8A per phase (15kW) or 29A per phase (20kW)
- Peak output off grid: twice rated power for 10 seconds
- Max continuous AC passthrough: 70A
- Generator input: 230/400V, 24A rated
- Max PV input power: 24,000W (15kW) or 32,000W (20kW)
- Max panels: 30,000W (15kW) or 40,000W (20kW)
- MPPT trackers: 2, two strings per tracker
- PV voltage: 550V rated, 160V start up, 800V maximum, 160V to 650V MPPT range
- PV input current: 36A + 36A, max short circuit 54A + 54A
- Battery voltage: 48V nominal, 40V to 60V range
- Battery inputs: 2
- Battery type: lithium ion or lead acid
- Max charge and discharge current: 280A (15kW) or 350A (20kW)
- Parallel operation: up to 10 units, on grid and off grid
- Communication: RS232, RS485 and CAN
- Display: LCD with LED indicators
- Cooling: intelligent air cooling
- Protection rating: IP65, wall mounted
- Operating temperature: -40C to +60C, derating above 45C
- Noise: under 60dB
- Dimensions: 456mm W x 750mm H x 268.5mm D, excluding connectors and brackets
- Weight: 51.9kg
- Grid standard: AS/NZS 4777.2, Clean Energy Council approved
- Warranty: 10 years
Your property needs a three phase supply for this inverter, and it must be installed and connected to the grid by an SAA accredited installer. To store energy you also need compatible 48V batteries, bought separately. Pick the size that matches your site rather than the biggest one available, and if you are not sure, give us a call before you order and we will size it with you.
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Installation of Hardwired Electrical Products
in Australia
When it comes to the installation of hardwired electrical products in Australia, it is important to be aware of the regulations and guidelines in place to ensure safety and compliance. As per the Electrical Safety Act, installations operating at ELV (Extra Low Voltage) levels of 120 VDC (Ripple Free) and below may be installed by individuals with the necessary knowledge and skills.
However, it is crucial to note that installations operating above ELV levels require the expertise of licensed electricians and experienced installers. Products falling under this category are not suitable for DIY (Do-It-Yourself) installation and must be handled by professionals. This includes, but is not limited to, DC solar arrays operating above 120 VDC and hardwired outputs of inverters and similar products converting ELV levels to AC voltage levels over 50V (such as 230V AC).
Attempting to install such products without the proper qualifications can not only compromise performance and pose a significant safety risk, but also may invalidate any manufacturer’s warranties.
At Buzz Energy Systems, we recognise the importance of reliable and efficient installations that prioritise safety, performance, and warranty compliance.
For installations that operate above ELV levels, we strongly advise against DIY installation. Instead, we recommend seeking professional assistance from licensed electricians and experienced installers to ensure the proper installation and optimal performance of such products.
Buzz Energy Systems can facilitate access to qualified tradespeople and accredited design professionals. Our network of trusted contractors ensures compliance with regulations, preservation of manufacturers’ warranties, and most importantly, your safety.
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It is your responsibility to ensure that the installation, operation, and use of our products align with relevant laws, regulations, and safety guidelines. We strongly recommend seeking the expertise of licensed professionals to handle installations above ELV levels and to ensure compliance with all applicable codes and standards.
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Further Important Notices
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Handle installation risk and site safety for themselves and their workers.
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