PROJOY RSD PEFS-EL Series Installation Guide

1 Scope and General

This manual is used for the PEFS-EL Series Array-level Rapid Shutdown.

1. Changes or modifications not explained/approved in this manual void your authority to operate this equipment.
2. PROJOY shall not be held responsible for any damage caused due to incorrect installation of the product and/or the misunderstanding of this manual.
3. PROJOY reserves the right to make any modification to this manual or the information contained herein at any time without notice.
4. No design data such as sample pictures provided in this manual may be modified or duplicated except for the purpose of personal use.
5. To ensure the recycling of all possible materials and proper disposal treatment of components, please return the product to PROJOY at end-of-life.
6. Check the system regularly (once per 3 months) for faults.

2 Important Safety Precautions

Components in the installations are exposed to high voltages and currents. Follow these instructions carefully in order to reduce the risk of fire or electric shock.

The following regulations and standards are considered applicable and mandatory to read prior to the installation of electrical equipment:

1. Connection with the main circuit: Wiring should be done by professional qualified personnel. Wiring should be done after confirmation of complete disconnection of input power supply. Wiring should be done after installation of breaker body.
2. International Standards: IEC 60364-7-712 Electrical installations of buildings - Requirements for special installations or locations - Solar Photovoltaic (PV) power supply systems.
3. Local building regulations.
4. Guidelines for lightning and overvoltage protection.

Note!

1. It is essential to uphold the limits for voltage and current in all possible operating conditions. Also keep in mind the literature on correct dimensioning and sizing of cabling and components.
2. The installation of these devices may only be performed by certified technical personnel.
3. The wiring schematics of the Firefighter Safety Switch can be found at the end of this manual.
4. All installation works should be tested in accordance with relevant local legislation at the time of installation.

3 About Rapid Shutdown

3.1 Intended Use of the Rapid Shutdown

The Rapid Shutdown has been especially developed as a safety device for direct current (DC) photovoltaic installations. The DC disconnect switch is used to disconnect the connected strings of the installation in case of an emergency situation, such as a fire.

3.2 Location of the Rapid Shutdown

The Rapid Shutdown needs to be placed as close to the solar panels as possible. Due to its enclosure, the switch is protected against external influences like dust and moisture. The whole set-up conforms to IP66, making it suitable for outdoor usage when needed.

4 Shutdown Mode

The system offers multiple shutdown modes:

• Automatic Shutdown: Automatically shuts down the DC power of panels when detecting the area temperature is higher than 70°C.
• AC Power Shutdown: Firefighters or homeowners can manually turn off the AC power of the distribution box when in an emergency, or it can automatically shut down when the AC power is lost.
• Manual Shutdown: In an emergency, it can be shut down manually through the Panel Level Rapid Shutdown Controller Box.
• RS485 shutdown: Maintainers or homeowners can also remotely shut down through RS485 communication (Optional).

5 About PEFS Array-level Rapid Shutdown

5.1 Model Description

The model naming convention is as follows:

PE FS EL 55 4-P2

• PE: Brand Code
• FS: Design Code
• EL: Product Code
• 55: Frame Rating (e.g., 55A)
• 4: Number of poles
• P: Plastic enclosure
• 2: Generation 2

5.2 Technical Parameters

5.3 Wiring Options

6 Installation

6.1 Installation Requirements

Open the box, take out PEFS, read this manual, and prepare a cross/straight screwdriver.

Visual Aid Description: The diagram shows a box opening to reveal the PEFS unit, alongside a crosshead screwdriver and a flathead screwdriver. A warning symbol [!] is also depicted.

6.2 Installation Steps

1. Pull out the product bottom bracket to both sides.

   Visual Aid Description: Diagram shows a bracket being pulled outwards from the bottom of the PEFS unit.

2. Mount the switch enclosure on the wall.

   Visual Aid Description: Diagram shows the PEFS unit being mounted onto a wall, with a screwdriver being used.

3. Wire the power AC connection to the terminals.

   Wire Color: According to American and Europe standard requirements.

   American standard: L: Black; N: White; G: Green

   Europe standard: L: Brown; N: Blue; G: Green&Yellow

   Visual Aid Description: Depicts terminal connections for American and European wiring standards, showing L, N, G labels with corresponding colors.

   Note! FB1, FB2 are used to remotely display the on and off states of the switch. When the switch is closed, FB1 is connected to FB2; when the switch is open, FB1 is disconnected from FB2.

   Visual Aid Description: A schematic shows the PEFS unit connected to an AC distribution box. It includes indicator lights, a resistor, an external power source, and an optional emergency button. The diagram indicates MCU-CONTROL and terminals like FB1, FB2, PE, N, L.

   Resistor is selected according to supply voltage, to ensure circuit current less than the rated current of the Indicator light and <320mA.

4. Wire the string cables to the interface.

   Visual Aid Description: An image shows the interface connector with ports labeled (1+, 1-, 2+, 2-).

   Note! Please follow the marks (1+, 1-, 2+, 2-) for PV wiring.

5. Note the installation environment.

   Note!

   • Do not expose to direct sunlight.
   • Do not expose to rain and snow cover.
   • Do not be in direct contact with (continuous) ingress water.
   • The installation site must have good ventilation condition.

6. Diagram.

   Visual Aid Description: The diagram illustrates environmental conditions for installation. The first panel shows a house under sunlight with checkmarks (✔️) on the PEFS units, indicating suitability. The second panel shows a house with snow and rain, also with checkmarks (✔️). The third panel shows a house with heavy rain and lightning, with crosses (❌) on the PEFS units, indicating unsuitability.

   Visual Aid Description: A system diagram shows multiple "PV Arrays" connected in series and parallel strings. These strings lead to a "Firefighter Safety Switch" (PEFS), then to an "Inverter", followed by a "Distribution box", and finally connected to the "Grid". An optional "Emergency Button" is also shown, with a connection to the system. The diagram indicates DC and AC connections.

6.3 Test

1. Step 1: Activate AC power circuit. PEFS switches on.

   [AC Power ON Button] Approx. 35 sec.

2. Step 2: Wait one minute. UPS is charging.

   [Battery Icon] Approx. 1 min

3. Step 3: Deactivate AC power circuit. PEFS will switch off in about 7 seconds. Red LED light off.

   [AC Power OFF Button] Approx. 7 sec.

4. Step 4: Activate AC power circuit. PEFS switches on in 8 seconds. Red LED light on.

   [AC Power ON Button] Approx. 8 sec.

5. Step 5: Test is completed.

7 Aftersales Service and Warranty

This product is manufactured in a sophisticated quality management system. In case of fault, the following warranty and after-services clauses are applicable.

7.1 Warranty

On the premise of the user's compliance with reservation and use specifications of the breaker, for breakers whose delivery date is within 60 months from now and whose seals are intact, PROJOY will repair or replace any of these breakers which are damaged or cannot work normally due to manufacturing quality. However, for faults caused by the following reasons, PROJOY would repair or replace the breaker with a charge even if it is still under warranty:

1. Due to incorrect use, self-modification, and improper maintenance, etc.
2. Use beyond the requirements of standard specifications.
3. After the purchase, due to falling and damage during installation, etc.
4. Earthquakes, fires, lightning strikes, abnormal voltages, other natural disasters, and secondary disasters, etc.

7.2 Aftersales Service

1. Please contact the supplier or PROJOY's after-sales service department in case of failure.
2. During the warranty period: For failures caused by the company's manufacturing problems, free repairs and replacements are provided.
3. After the warranty period expires: If the function can be maintained after repair, a paid repair will be made; otherwise, it can be replaced with a paid unit.

8 Contact Us

Projoy Electric Co., Ltd.

Tell: +86-512-68786489

Web: https://en.projoy-electric.com/

Add: 2nd Floor, Building 3, No. 2266, Taiyang Road, Xiangcheng District, Suzhou