Frequently Asked Questions

Q: Can you connect PrimeVOLT’s Inverter to thin film panels?

A:

At present the most commonly used thin film panels are divided into two categories: Amorphous and copper gallium selenide (CIGS), due to the differences in structure, different treatment methods are used.

Amorphous: Because its structure is different from crystalline silicon (monocrystalline, polycrystalline) panel, in the case of Transformerless Inverter, to prevent TCO corrosion, it is necessary to attach a low-frequency transformer isolation between the Inviter AC output port and residential electric port, and ground at PV+ or PV- terminal. For detail connection instructions, please refer to the following figure. There are also amorphous panels on the market that do not require low-frequency transformers (e.g. FIRST SOLAR). Please contact your panel supplier.

CIGS: Because CIGS does not have or is less prone to TCO corrosion, most of the current market panel connections have no problems. However, for your safety, please confirm with panel suppliers again to make sure if it connects properly with transformerless inverter before you assemble.

Q: Is the inverter installation environment subject to special restrictions? What to watch out for?

A:

PrimeVOLT inverters are made of single-piece formed aluminum alloy, which is the same as the SMA and other big manufacturers, and the benefits of this type of design are that they are more robust and durable, so that they are able to endure harsh environments.

The surface enamel has a special coating with a higher weather resistance quality than average products, so there are almost no restrictions on the installation environment. Whether in high humidity, seaside, chicken coops, pigpens, farms, they are still able to cope with indoors and outdoors environment.
Nevertheless, to get the best results, please pay special attention to the following:

  1. Avoid direct sunlight as it will cause the body temperature of the inverter to rise. When the temperature is too high, the inverter will initiate self-protection mode, diminishing output performance and resulting in power loss.
  2. Paid attention to cooling and ventilation, some installation will have the machine inside a box, or lack of cooling space. These factors will cause the machine temperature to rise and reduce output.
  3. If there are many foreign objects in the air (such as feathers, etc.), a fanless single phase model should be used. If you use an inverter with a fan when there are such foreign objects, it will easily suck in foreign objects into the fan and cause blockage; once it is blocked, although it will not cause damage, it will reduce power generation. By then, you must manually remove the foreign objects.

Q: Can the inverter be connected to the Internet? What to watch out for?

A:

Most of the PrimeVOLT inverters are equipped with the following telecommunication interface:

1. RS485

2. Ethernet, RJ 45 interface

3. USB Wi-Fi interface (optional)

When using RS485, be sure to follow the settings from the manual, and use the twisted pair, terminating resistor and half-duplex (double-line) interface.

When using Ethernet network, please be aware that if the machine has been designated an IP address; in addition, when using Wi-Fi, you must use PrimeVOLT designated USB Wi-Fi Dongle, other models, even if it is of the same brand, cannot operate normally on this machine.

Q: What happens when I can’t communicate after I have connected to the Internet?

A: When the network is unreachable, there are usually some factors:

  1. Network cable problems: the network cable or connector may be broken or in poor contact, resulting in undelivered signals.
  2. Wireless distance is too far: When using Wi-Fi, pay special attention to the distance and obstructions between the Wi-Fi Dongle and the base station. When there is no obstacle between the two, the effective distance is usually only about 50 meters; when there is an obstacle, depending on the type of obstacle, there will be a big difference in distance.
  3. Router: Some routers on the market will have compatibility problems, resulting in drop signals. When this happens, try to replace with other models of routers; for related model numbers, please contact our customer service.

When you encounter these situations, please solve the problem accordingly. When it can’t be solved, please call our customer service. We will sincerely provide you with relevant information to help you solve the problems.

Q: Are different PV Inverters able to co-panel?

A:

Yes.

In each PV Inverter output, please connect isolation transformer independently.

Q: How is a single phase PV Inverter connected to a delta power system?

Q: I have a self-developed RS485 monitoring system, and I will not use Logger’s network and record functions. Are any of these helpful to me?

A:

E-Logger is your solution.

It is a simplified version of the Logger, and it still provides the basic RS485 communication interface and abnormal lights display.

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