Installing a rapid shutdown system is critical for safety and compliance. Here’s what you need to know to get it right.
Follow these guidelines to install rapid shutdown systems safely, focusing on symbols, security steps, disassembly, and chemical precautions.
Ready to dive deeper? Let’s explore each step in detail.
1. What Symbols Might You Encounter During RPD Installation?
Symbols are not just visual aids; they are critical for ensuring safety and compliance. Misinterpreting a symbol can lead to incorrect wiring or even system failure. Always refer to the manufacturer’s manual for specific symbol meanings.
2. What Are the Security Instructions for Rapid Shutdown Installation?
To ensure the safe installation and operation of the shutdown, reduce the risk of electric shock, and minimize equipment damage, the following safety precautions must be strictly followed during operation and maintenance.
All installation operations must be completed by professional technicians only. Professional technicians must:
- Be specially trained;
- Read this manual completely and understand the safety matters related to operation;
- Be familiar with relevant safety regulations for electrical systems.
3. What Precautions Should You Take During Installation?
- Avoid contact between the connector and alkane substances, such as gasoline, cleaning lubricants, electronic resurgents, and other solvents containing alkane substances.
- During unloading and transportation of the product, handle it with care and avoid heavy pressure from external forces to prevent damage.
- When installing the junction box and connector, first confirm that the battery component is not in working condition, and ensure that the human body does not touch the positive and negative terminals simultaneously to prevent electric shock and electrostatic breakdown of the diode.
- Under no circumstances should the positive and negative plugs of the same set of junction box connectors be plugged together, as this could cause a short circuit and burn the battery board.
- Unless required for maintenance, avoid frequently opening, closing, or plugging in the connection system, as this reduces the waterproof sealing and service life.
4. List of Chemical Substances to Avoid Direct Contact
| Substance | Influence |
|---|---|
| Gasoline | Avoid direct contact or being enclosed in a confined space, which may cause slight peeling on the surface of the junction box. |
| White Flower Oil | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Medicated Balm | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Acetone | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Essential Balm | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Bone-setting Fluid | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Thinner | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Demolding Agent (e.g., Pelicoat) | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| Adhesives producing oxime gas (e.g., KE-200, CX-200, Chemlok) | Avoid direct contact or being enclosed in a confined space, which may cause cracks in the junction box. |
| TBP (Plasticizer) | Avoid direct contact, which may cause cracks in the junction box. |
| Engine Oil (e.g., KV46) | Avoid direct contact, which may cause cracks in the junction box. |
| Mold Temperature Oil | Avoid direct contact, which may cause cracks in the junction box. |
| Alcohol | Avoid direct contact, which may cause slight peeling on the surface of the junction box. |
| Grease (e.g., Molykote) | Avoid direct contact, which may cause cracks in the junction box. |
| Detergent | Avoid direct contact, which may cause cracks in the junction box. |
5. System Installation Instructions
5.1 Preparation Tools
The following tools are required for installation, inspection, and replacement:
Check out HIITIO rapid shutdown devices for your project.
5.2 Installation Steps Instructions
Step 1: Shut down the inverter and disconnect it from the module array.
Before installing the shutdown, ensure the inverter is shut down and disconnected from the module array.
Step 2: Install the shutdown to the component frame.
Place the photovoltaic rapid shutdown into the component frame in the direction shown in the figure, and snap the buckle directly into place.
Step 3: Input cable connection.
The set of lines marked +IN- on the casing of the photovoltaic shutdown is the input line (the shorter pair of lines), which is connected to the output terminals (PV+, PV-) of the photovoltaic module.
- The positive output (PV+) connector of the photovoltaic module is connected to the positive input (IN+) connector of the photovoltaic switch.
- The negative output (PV-) connector of the photovoltaic module is connected to the negative input (IN-) connector of the photovoltaic switch. Ensure the connector is firmly connected.
Step 4: Connect the output lines to form a string.
After the input wires are connected, connect the output wires of the photovoltaic shutdown in series. Connect the positive output (OUT+) connector of the first photovoltaic shutdown in the string to the negative output (OUT-) connector of the second shutdown; repeat the above actions until the string connection is completed.
6. Inspection and Replacement
6.1 Inspection
To check whether the shutdown is abnormal, follow these steps:
- Use a current clamp meter to measure the shutdown input current. If there is an input current, the shutdown will work normally. If the input current is 0, the shutdown or component is abnormal.
- If the input current is 0, check whether the component is visibly damaged or severely blocked. If there is obvious damage, replace the component. If there is a serious obstruction, remove it.
- If there is no abnormality in the component, check whether the connecting cable is disconnected. After disconnecting the input line of the shutdown (the output line should be disconnected first), use a multimeter to measure the voltage of the positive and negative connectors of the component output line. If the voltage is normal, the line connection is intact. If there is no voltage, further check the line connection to confirm the break point. If the components and circuit connections are normal, consider replacing the shutdown.
6.2 Replacement
If you need to replace the photovoltaic rapid shutdown, follow these steps:
- The gateway controller/inverter shuts down and disconnects from the corresponding string.
- Disconnect the output connection line of the shutdown.
- Disconnect the input connection line of the shutdown.
- Remove the original shutdown and install a new one.
- Connect the input line and then the output line.
- Reconnect the corresponding string to the gateway controller/inverter.
- Restart the gateway controller/inverter.
- Use a current clamp meter to test the input current of the shutdown after replacement to confirm successful repair.
Conclusion
Installing a rapid shutdown system requires careful planning, safety measures, and proper execution. Follow these guidelines for success.
For more information or collaboration details, please contact our sales team: sales@hiitio.com.
