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| Categories | Off Grid Hybrid Solar Inverter |
|---|---|
| Brand Name: | 1stess |
| Model Number: | EM-T (PV60-500VDC) 11000-48L |
| Certification: | CE, IEC |
| Place of Origin: | China |
| MOQ: | 1 piece |
| Price: | To be negotiated |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 2000 pieces per month |
| Delivery Time: | 30 days |
| Packaging Details: | carton box |
| Charging Mode: | MPPT |
| Operating Temperature: | -10°C To 50°C |
| Inverter Type: | Off Grid inverter |
| Frequency: | 50Hz/60Hz |
| Output Voltage: | 220VAC/230/240VAC |
| Communication Interface: | RS232/RS485/DRY CONTACT |
| Input Voltage: | 230VAC |
| Size: | 540*415*122mm |
| Waveform: | Pure Sine wave |
| Output Current: | 160A |
| Weight: | 15kg |
| Company Info. |
| Shenzhen First Tech Co., Ltd. |
| Verified Supplier |
| View Contact Details |
| Product List |

| MODEL | EM8500-48L | EM11000-48L |
|---|---|---|
| Capacity | 8.5KVA/8.5KW | 11KVA/11KW |
| Maximum PV input power | 10000W | 11000W |
| Lithium Battery Activation | YES ( By PV or Utility) | YES ( By PV or Utility) |
| Lithium Battery Communication | YES(RS485) | YES(RS485) |
| Battery Voltage | 48VDC | 48VDC |
| Solar Charger TYPE | MPPT | MPPT |
| Communication Interface | RS232/RS485/DRY CONTACT | RS232/RS485/DRY CONTACT |
| Dimension, D xW x H(mm) | 540*415*122 | 540*415*122 |







Q1: Is the EM series inverter suitable for Thailand's frequent
power outages and high temperatures?
A: Absolutely! The EM series operates reliably in temperatures from
-10°C to 50°C and features a fast transfer time of 10ms for
personal computers, ensuring uninterrupted power during outages.
Its anti-shock design and detachable dust cover make it ideal for
Thailand's humid and dusty environments.
Q2: How does the MPPT technology benefit solar energy users in
Thailand?
A: With dual MPPT and a PV input range of 60-500Vdc, the inverter
maximizes solar harvest even during cloudy days. This is perfect
for Thailand's tropical climate, where solar irradiance varies,
helping you save on electricity bills.
Q3: Can the inverter work with lithium batteries commonly used in
Thailand?
A: Yes! The EM series supports lithium battery activation via PV or
utility and offers RS485 communication for seamless compatibility
with LiFePO4 batteries, which are popular in Thailand for their
longevity and efficiency.
Q4: What output priorities are available for homes and small
businesses?
A: It supports multiple output priorities: UTL (Utility), SOL
(Solar), SBU (Solar-Battery-Utility), and SUB
(Solar-Utility-Battery). This flexibility allows users in Thailand
to optimize energy use based on grid availability and solar
production.
Q5: Is Wi-Fi monitoring available for remote management?
A: Yes, an optional Wi-Fi module enables real-time monitoring and
control via mobile apps. This is especially useful for Thailand's
growing smart home market, providing convenience and peace of mind.
Q6: How does the EQ function enhance battery life in Thailand's
climate?
A: The EQ function optimizes battery performance by preventing
overcharging and sulfation, extending battery lifecycle—essential
in Thailand's high-temperature conditions where batteries degrade
faster.
Q1: Can the EM series handle Vietnam's voltage fluctuations and
frequent storms?
A: Yes! The inverter accepts a wide voltage range of 90-280VAC,
making it resilient to grid instability. Its pure sine wave output
ensures safe operation for sensitive appliances during storms or
power surges.
Q2: How efficient is the solar charging in Vietnam's cloudy
regions?
A: With a peak efficiency of 94% and MPPT technology, the inverter
efficiently converts solar energy even in low-light conditions,
ideal for Vietnam's northern regions with seasonal cloud cover.
Q3: Is the inverter compatible with local lead-acid batteries?
A: While optimized for lithium batteries, the EM series supports
CC/CV charging methods, making it compatible with lead-acid
batteries commonly used in Vietnam. The EQ function further
enhances battery health.
Q4: What surge power support is available for starting motors?
A: The EM11000-48L offers a surge power of 22000VA, capable of
handling high startup currents for pumps and motors widely used in
Vietnam's agricultural sector.
Q5: How easy is installation in rural Vietnamese homes?
A: The compact design (540*415*122mm) and lightweight build
(14-15kg) allow for easy installation. Detailed LCD display and dry
contact interfaces simplify setup for local technicians.
Q6: Does it support grid-tie operations for net metering?
A: No, the EM series is off-grid only. However, its hybrid design
allows seamless switching between solar, battery, and utility,
perfect for areas with unreliable grids in Vietnam.
Q1: Is the EM series resistant to Indonesia's high humidity and
salt air?
A: Yes! With 5-95% non-condensing humidity tolerance and
anti-corrosion terminals, the inverter is built to withstand
coastal and humid environments common in Indonesia.
Q2: How does the lithium battery activation work during prolonged
rain?
A: The battery can be activated via PV or utility, ensuring
reliability even during rainy seasons when solar input is low. This
feature is crucial for Indonesia's climate.
Q3: Can it power entire households during frequent blackouts?
A: With capacities up to 11KW and surge power up to 22000VA, the
inverter can support typical Indonesian homes, including air
conditioners and refrigerators, during outages.
Q4: What is the maximum solar array size for residential use?
A: The EM11000-48L supports up to 11KW PV input, allowing
homeowners in Indonesia to maximize rooftop solar potential and
reduce dependence on generators.
Q5: Are there communication options for system integration?
A: Yes, RS232 and RS485 ports enable integration with energy
management systems, popular in Indonesia's growing renewable energy
market.
Q6: How does the inverter perform in remote islands without grid
access?
A: It operates without a battery if needed, making it suitable for
off-grid islands. The dual MPPT ensures efficient solar use, ideal
for Indonesia's archipelago.
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