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| Brand Name : | 1stess |
| Model Number : | EM (PV60-500VDC) 620048L |
| Certification : | CE, IEC |
| Price : | To be negotiated |
| Payment Terms : | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability : | 2000 pieces per month |
| Delivery Time : | 30 days |

| Place of Origin | China | China | China |
|---|---|---|---|
| Mounting Method | Wall Bracket | Wall Bracket | Wall Bracket |
| Nominal Battery Voltage (V) | 24VDC | 48VDC | 48VDC |
| Lithium Battery activation | YES( By PV or Utility) | YES( By PV or Utility) | YES( By PV or Utility) |
| Nominal Voltage | 230VAC | 230VAC | 230VAC |
| Lithium Battery communication | YES(RS485) | YES(RS485) | YES(RS485) |
| Frequency | 50/60Hz | 50/60Hz | 50/60Hz |
| Waveform | Pure Sine wave | Pure Sine wave | Pure Sine wave |
| Solar Charger Type | MPPT | MPPT | MPPT |
| Communication Interface | RS232+RS485 | RS232+RS485 | RS232+RS485 |
| PV Array MPPT Voltage Range | 60VDC~500VDC | 60VDC~500VDC | 60VDC~500VDC |
| Surge Power | 7000VA | 11000VA | 1240VA |
| Size | 358*295*100mm | 438*295*105mm | 438*295*105mm |
| Weight | 7kg | 9kg | 9kg |
| Operating Temperature Range | (-10'℃ to 50℃) | (-10'℃ to 50℃) | (-10'℃ to 50℃) |








Q1: Can the system operate in areas with frequent, prolonged rain
and cloudy days?
A: Yes. While solar production will be lower, the MPPT is efficient
at harvesting available light. Coupled with a sufficiently large
battery bank, the system can be designed to provide reliable power
through multiple cloudy days.
Q2: Is the inverter resistant to damage from lightning-induced
surges?
A: The inverter includes basic surge protection. However, for areas
prone to lightning strikes, we strongly recommend installing
external, heavy-duty lightning arrestors on both the AC and DC
sides for maximum protection.
Q3: Can I use the inverter to power tools on a remote construction
site?
A: Absolutely. Its robust build, pure sine wave output, and surge
power make it ideal for powering hand tools, lighting, and small
machinery off-grid, reducing the need for noisy and polluting
generators.
Q4: What is the meaning of "Power Factor 1.0" for the input?
A: A power factor of 1.0 means the inverter draws AC current from the
grid or generator in perfect phase with the voltage. This is highly
efficient and reduces stress on the generator or grid transformer,
making it a "good citizen" on the network.
Q5: How do I know if my lithium battery is compatible?
A: Check your battery's communication protocol. If it supports
standard RS485 communication for parameters like voltage and
current, it is likely compatible. Contact our support team with
your battery model for confirmation.
Q6: Is financing available for the purchase of a solar system with
this inverter?
A: We partner with several financial institutions in Colombia to
offer attractive financing options for our customers, making it
easier to invest in clean, independent energy.
A: The 6.2KW model can handle the starting surge of one or two small-to-medium AC units along with other baseline loads. For a villa with multiple large ACs, we would recommend a system design involving multiple high-capacity inverters.
Q2: How does the dust cover help in a dusty environment like the
UAE?
A: The detachable dust cover is essential for preventing fine desert
sand and dust from clogging the ventilation fans and internal
components, which is critical for maintaining cooling and long-term
reliability.
Q3: Can I integrate this with my existing solar system?
A: It can be integrated as a complementary backup system. However,
its solar charger cannot be used simultaneously with another
inverter's charger on the same battery bank without a custom and
professional design.
Q4: What is the typical payback period for a system using this
inverter in the UAE?
A: While electricity tariffs are lower, the high solar yield and
reliability during peak demand can lead to a good return on
investment, especially when considering the value of uninterrupted
power for home businesses and comfort.
Q5: Are there any government incentives (like Shams Dubai) that
this inverter qualifies for?
A: The EM Series is designed for off-grid and backup. For grid-tie
incentives like Shams Dubai, a dedicated grid-tie inverter is
required. Our inverter is perfect for those prioritizing energy
independence and backup.
Q6: Do you offer premium installation services for high-end villas?
A: Yes, we work with a network of premium installers who specialize
in clean, discreet, and high-quality installations that meet the
expectations of the UAE's luxury market.
Q1: Is this a good solution for a small guesthouse (riad) in the
medina with unstable power?
A: An ideal solution. It provides silent, clean backup power to
ensure guest comfort, powering lights, point-of-sale systems, and
Wi-Fi without the noise and fumes of a generator, which is often
restricted in dense urban areas.
Q2: Can the MPPT handle the high temperatures on a flat, exposed
roof?
A: The MPPT circuitry is designed for high efficiency, which
minimizes heat generation. However, routing PV cables away from
direct roof contact and ensuring good airflow around the inverter
itself will help maintain optimal performance.
Q3: What is the difference between the built-in MPPT and a separate
solar charge controller?
A: The built-in MPPT is an integrated, space-saving solution that is
perfectly matched to the inverter's capabilities. It eliminates the
need for and cost of a separate external charge controller,
simplifying the system.
Q4: Is the "EQ function" relevant if I plan to use lithium
batteries?
A: No, the Equalization function is only for lead-acid batteries.
Lithium batteries have their own built-in Battery Management System
(BMS) that handles cell balancing, making EQ unnecessary and
potentially harmful.
Q5: How can I be sure I'm selecting the right model size for my
needs?
A: Our local partners can provide a free, no-obligation energy
assessment. Alternatively, you can list your essential appliances
and their wattage, and we can guide you to the perfect model.
Q6: Is the brand recognized and trusted in the Moroccan market?
A: We are a growing international brand committed to quality and
reliability. We are building our presence in Morocco through
trusted local distributors and by providing excellent product
support.
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