PJ

30/06/2022

Recently, PROJOY Electric PLC module-level rapid shutdown passed UL 1741 standard test, the United States UL certification. After the DC24V type passed UL certification last year. Another power line communication (PLC) type module-level rapid shutdown has also received a pass to enter the North American market.

UL1741 certification is currently the main evaluation standard for PV Rapid Shutdown System Equipment and PV Rapid Shutdown Systems. To improve the reliability of these safety systems, UL1741 is tested under harsh conditions including hardware failures, software failures, and evaluated under environmental and electrical extremes.

The United States has always implemented the most stringent standards for the safety of photovoltaic power stations. Passing the UL standard test of the United States is a full affirmation of the rapid shutdown products of PROJOY Electric. It is reported that there are only 3 companies in the world whose PLC rapid shutdown is UL certified, and PROJOY PEFS series rapid shutdown is one of them.

02/06/2022

New Generation Projoy Electric Panel Level Rapid Shutdown Device (RSD). Now available in the Philippines. Please click https://bit.ly/3M9Dhws for more details.

16/03/2022

09/03/2022

Very soon!!!

26/01/2022

In the event of a fire, rooftop photovoltaic (PV) systems present a health and safety hazard for firefighters who may need to access the roof because there could still be between 600 to 1500 VDC running between the inverter and the solar panels.

Projoy Electric's PEFS EL Series of string level rapid shutdown devices (RSD) ensures the safety of firefighters and minimizes further damage to the PV system by automatically shutting down power from the solar panel strings to the inverter when it detects AC shutoff or when the temperature around the RSD exceeds 70 degrees celsius.

Projoy Electric's PEFS-EL40H-10 Commercial-grade string level RSD can control 5 strings of solar panels from 20A to 40A and from 300V to 1500V depending on the installation design.

Please message us for further information and to allow us to recommend the most ideal model for your PV installation.

24/12/2021

Merry Christmas from Projoy Electric Philippines! May everyone's Christmas be electrifying!

20/12/2021

Projoy Electric string-level rapid shutdown device (RSD) application on a gas station in Thailand.

17/12/2021

https://en.projoy-electric.com/news/431.html

The on-grid solution can convert the DC from solar panels into AC with the same voltage, the same frequency, and the same phase as the grid electricity, and transmit the power to the grid. According to the safety requirements, isolator is required between photovoltaic module and grid-connected inver...

06/12/2021

https://en.projoy-electric.com/news/428.html

Actual Testing with the Power Station, how Fast is Projoy's Rapid Shutdown?

Recently, the National Energy Administration has successively issued two notices on the development and construction of photovoltaic power plants and their safe production management, emphasizing the safety issues of photovoltaic power plants. The "Notice on Strengthening the Safety of Distributed Photovoltaic Power Generation (Draft for Solicitation of Comments)" clearly puts forward the requirements for photovoltaic power plants to install modules with fast shutdown functions: “Install arc fault circuit breakers or use components with corresponding functions to realize arc intelligent detection and quick cut-off functions"; "PV modules shall have a safe shutdown protection function to ensure that the DC voltage outside the system sub-array is lower than the safe voltage after the inverter shuts down and the AC power is off.”

The potential safety hazards of photovoltaic power plants cannot be underestimated. Regarding the issue that high-voltage and direct current still exist after the power outage of photovoltaic power plants, the notice from the Energy Administration has already proposed specific solutions. However, whether the current loop can be "quickly" cut off in the first time when danger occurs after installing components that nominally claiming having a "quick" shutdown function or not? It has become the most concerned issue of photovoltaic users.

Herein, Projoy Electric Co., Ltd (hereinafter referred to as "Projoy") conducted an on-site test for its newly launched PEFS-PL series module-level fast shutdown.

After the RSD device is connected to the power station system, the inverter and the grid, we simulate the power failure of the power grid and get the high temperature caused by partial component shielding, and shut down the normal fire button to realize shutdown of protection function of the shutdown device. Our tester clamped the oscilloscope current clamp to the output line of the shutdown device and use the oscilloscope waveform to detect the output current waveform to determine whether it is on or off.

Test Results--

If the temperature exceeds 85°C, Projoy RSD will automatically cut off the current;

20A current turn-off response time is less than 10ms;

It will automatically reset when it is powered on again after it is turned off, and it only takes 33μs (

01/12/2021

Installing Projoy Electric's Panel-level Rapid Shutdown Devices is easy.

PEFS-PL Series Panel Level Firefighter Safety Switches/Rapid Shutdown (DC 24V, One fits One, 120V)PEFS-PL Series Panel Level Firefighter Safety Switches is a...