Following my 48V Foshan SNADI All-in-one review, I also purchased a 24V low frequency pure sine wave inverter from Guangdong Xindun Power Technology Co.,Ltd. My sales representative Cindy Lee was extremely helpful and a pleasure to deal with.
The unit price was USD$401 EXW for :
24V / 4000W Inverter 240V 50Hz output
MPPT 60A charging
AC input screw terminals
1 * universal AC output socket
Screw terminals for DC output and AC output
Resettable button fuses for input/output.
Like my 48V All-in-one, this unit allows PV solar charging while the inverter is off.
The unit is quite sizeable, 580mm x 315mm x 290mm and weights approx 20kg.
(The Xindun inverter is the white unit in the middle)
The internals look well made and brand new. There is a larger fan for the inverter board on the right, and a smaller fan for the MPPT on the left.
.
Mine actually had some transport damage where 4 of the Toroidal transformer leads had disconnected off their respective spade connectors.
Xindun were able to diagnose the problem from the photos I sent them and sent instructions on how to reattach the leads.
Pros :
- works as advertised, no problems with my DIY EVE 280Ah 8s battery packs.
- menu allows you to configure Float and Constant charge limits, LVD, Crossover voltage from Battery -> AC Grid and vice versa.
- Main priority / Eco mode / Battery Priority
- PV charges my EVE 280Ah 8s pack while simultaneously powering the inverter output.
- Well made, sturdy powder coated steel construction
- $401 price
- Custom built (other suppliers could only provide 220V AC) Voltage, Hz, optional PV charging / MPTT / PWM, you can choose the PV max Amps and the Inverter output up to 7kW.
Cons :
- Mine came with some shipping damage, the glued foam padding on one side had delaminated and the metal wing base of one corner was slightly bent. The toroidal transformer leads had slid off their spade tabs.
- The unit gets surprisingly hot - 39 degrees C reported by the display when PV charging. Up to 50 degrees C when PV charging and the inverter running. Even the white metal shell became quite warm.
- The small left side fan comes on intermittently from 40 deg C and is a bit whiney.
- The larger right sided fan never came on.
- the PV output in watts is incorrect. I am using an external PV combiner box to combine 2 series strings of different voltages. This isn't a problem for the Foshan Snadi, but this unit report an incorrect PV power (W).
- Horrible loud beep every time you press any button, I put kapton tape over the speaker.
- Fairly small battery terminal screws, approx M6.
- Only one AC output socket, therefore you will need to cut and strip an extension cord to connect to the AC input / AC output screw terminals
- When PV charging I noticed the inverter's displayed battery voltage was between 0.2v - 0.4v lower than my BMS/multimeter recorded. Set your inverter HV cutoff accordingly (they as also set as for 12v, like Renogy, so 14.4 = 28.8)
- No grounding attachment on the case, I don't know if this is an issue, but other inverters include a ground terminal.
Caution :
- Like my All-in-one, these units can run in Battery or Mains priority mode. Imagine you are drawing 4000W AC output from the inverter in Battery priority mode, and your battery discharges down to the low voltage switchover to grid.
- neither an Australian 10A 240V socket nor 15A 240V socket can provide 4000W.
- hence it is recommended that you have an electrician wire the AC input to your house's electrical system.
- in my case I will use a 15A powerblock with included safety switch/RCD
Edit : May be I've posted this review in the wrong sub forum, but with this inverter you obviously can't feed back into grid excess solar power.
Factory High Quality 1kw 2kw 3kw 4kw 5kw 6kw 7kw Solar Power Inverter With Mppt Charge Controller Pure Sine Wave Solar Inverter - Buy Pure Sine Wave Inverter,Solar Inverter,Factory High Quality 1kw 2kw 3kw 4kw 5kw 6kw 7kw Solar Power Inverter With Mp
Factory High Quality 1kw 2kw 3kw 4kw 5kw 6kw 7kw Solar Power Inverter With Mppt Charge Controller Pure Sine Wave Solar Inverter - Buy Pure Sine Wave Inverter,Solar Inverter,Factory High Quality 1kw 2kw 3kw 4kw 5kw 6kw 7kw Solar Power Inverter With Mppt Charge Controller Pure Sine Wave Solar...
m.alibaba.com
The unit price was USD$401 EXW for :
24V / 4000W Inverter 240V 50Hz output
MPPT 60A charging
AC input screw terminals
1 * universal AC output socket
Screw terminals for DC output and AC output
Resettable button fuses for input/output.
Like my 48V All-in-one, this unit allows PV solar charging while the inverter is off.
The unit is quite sizeable, 580mm x 315mm x 290mm and weights approx 20kg.
(The Xindun inverter is the white unit in the middle)
The internals look well made and brand new. There is a larger fan for the inverter board on the right, and a smaller fan for the MPPT on the left.
.
Mine actually had some transport damage where 4 of the Toroidal transformer leads had disconnected off their respective spade connectors.
Xindun were able to diagnose the problem from the photos I sent them and sent instructions on how to reattach the leads.
Pros :
- works as advertised, no problems with my DIY EVE 280Ah 8s battery packs.
- menu allows you to configure Float and Constant charge limits, LVD, Crossover voltage from Battery -> AC Grid and vice versa.
- Main priority / Eco mode / Battery Priority
- PV charges my EVE 280Ah 8s pack while simultaneously powering the inverter output.
- Well made, sturdy powder coated steel construction
- $401 price
- Custom built (other suppliers could only provide 220V AC) Voltage, Hz, optional PV charging / MPTT / PWM, you can choose the PV max Amps and the Inverter output up to 7kW.
Cons :
- Mine came with some shipping damage, the glued foam padding on one side had delaminated and the metal wing base of one corner was slightly bent. The toroidal transformer leads had slid off their spade tabs.
- The unit gets surprisingly hot - 39 degrees C reported by the display when PV charging. Up to 50 degrees C when PV charging and the inverter running. Even the white metal shell became quite warm.
- The small left side fan comes on intermittently from 40 deg C and is a bit whiney.
- The larger right sided fan never came on.
- the PV output in watts is incorrect. I am using an external PV combiner box to combine 2 series strings of different voltages. This isn't a problem for the Foshan Snadi, but this unit report an incorrect PV power (W).
- Horrible loud beep every time you press any button, I put kapton tape over the speaker.
- Fairly small battery terminal screws, approx M6.
- Only one AC output socket, therefore you will need to cut and strip an extension cord to connect to the AC input / AC output screw terminals
- When PV charging I noticed the inverter's displayed battery voltage was between 0.2v - 0.4v lower than my BMS/multimeter recorded. Set your inverter HV cutoff accordingly (they as also set as for 12v, like Renogy, so 14.4 = 28.8)
- No grounding attachment on the case, I don't know if this is an issue, but other inverters include a ground terminal.
Caution :
- Like my All-in-one, these units can run in Battery or Mains priority mode. Imagine you are drawing 4000W AC output from the inverter in Battery priority mode, and your battery discharges down to the low voltage switchover to grid.
- neither an Australian 10A 240V socket nor 15A 240V socket can provide 4000W.
- hence it is recommended that you have an electrician wire the AC input to your house's electrical system.
- in my case I will use a 15A powerblock with included safety switch/RCD
Ultracharge UR115/5RU 2x 15A & 3x 10A Outlet Sockets & RCD Safety Power Block Box with USB x2 Ports | Electrical, Electrical, Lighting & Electrical, Sale Items, Top Sellers, Ultracharge, Workshop & Engineering | Discount Trader
Features: Heavy-duty Impact resistant plastic construction IP54 RCD life saving protection plus thermal resettable fuse 2x high power 15A sockets plus 3x standard 10A sockets 1.8M cable with clear inspection...
www.discounttrader.com.au
Edit : May be I've posted this review in the wrong sub forum, but with this inverter you obviously can't feed back into grid excess solar power.
Last edited: