DIHOOL Solar Panel Disconnect Switch Box (1 String 1000VDC) User Manual

1. Kupu Whakataki

This manual provides essential information for the safe and efficient installation, operation, and maintenance of your DIHOOL Solar Panel Disconnect Switch Box. Please read this manual thoroughly before installation and retain it for future reference. This device is designed to protect photovoltaic (PV) systems, specifically for RV applications with a single string up to 1000VDC.

2. Nga korero haumaru

WHAKATŪPATO: Installation and maintenance should only be performed by qualified personnel. High DC voltage is present and can cause severe injury or death. Always disconnect power sources before servicing.

• Me whakarite kia momotu katoa ngā pūtake hiko i mua i te tāutanga, i te tiaki rānei.
• Manatoko voltage and current ratings of your solar array match the specifications of this device.
• Whakamahia ngā taputapu tiaki whaiaro (PPE) e tika ana, tae atu ki ngā karapu whakamahana me ngā tiaki kanohi.
• Do not open the enclosure or attempt repairs if you are not qualified.
• Me whakarite te turanga tika o te punaha.

3. Hua Neke Atuview me nga Kete Rarangi

The DIHOOL Solar Panel Disconnect Switch Box is an IP65-rated enclosure containing a 40 Amp DC circuit breaker and a 20-40kA 2P DC1000V surge protector. It is designed for outdoor use and offers protection against overcurrent and lightning strikes in a single string PV system.

Whakaahua 3.1: DIHOOL Solar Panel Disconnect Switch Box and accessories. This image shows the main disconnect switch box along with MC4 connectors, mounting screws, wall anchors, and a grounding wire.

Ihirangi mōkī:

• 1x IP65 Waterproof Housing (PC+ABS material)
• 1x Surge Protector DC 1000V 2P 20kA / 40kA Type 2
• 1x Solar Disconnect Switch 2-pole DC1000V 40A
• MC4 Connectors (for Type B wiring)
• Nga Tiu Whakapiri me nga Punga Taiepa
• Waea Whakatu

Whakaahua 3.2: Taipitopito view of the disconnect switch box, showing the internal circuit breaker and surge protector, along with external connectors and mounting hardware.

Āhuatanga Hua:

• Durable Enclosure: Constructed from high-quality PC+ABS engineering plastics, offering long service life, IP65 waterproof and dustproof rating, anti-ultraviolet properties, and flame retardancy. Features a transparent viewing window for easy status checks.
• Fast Arc Extinguishing: The DC circuit breaker is designed with a robust arc extinguishing capability to safely interrupt high DC voltages.
• Enhanced Surge Protection: Utilizes a standard lightning protection chip for effective voltage surge absorption, superior to piezoresistor-based devices.

Whakaahua 3.3: This image compares the PC+ABS material used for the enclosure, highlighting its superior corrosion resistance, heat resistance, and UV resistance compared to standard ABS or iron enclosures, making it suitable for harsh outdoor environments.

Whakaahua 3.4: This image illustrates key features including the fast arc extinguishing capability of the circuit breaker, the flame-retardant properties of the PC+ABS enclosure material, and general wiring considerations.

4. Whakatakotoranga

Whakaahua 4.1: Physical dimensions of the DIHOOL Solar Panel Disconnect Switch Box, showing measurements of 140mm width and 285mm height.

Whakaahua 4.2: Illustration of the IP65 waterproof rating, indicating resistance to various environmental conditions including temperature, snow, and rain.

5. Tāuta me te Tatūnga

5.1 Te Whakapiki i te Whakapiri

The enclosure is designed for screw installation. Select a suitable outdoor location, ensuring it is easily accessible for operation and maintenance, and protected from direct mechanical impact.

• Mark the drilling points on the mounting surface using the enclosure as a template.
• Drill holes and insert the provided wall anchors.
• Secure the enclosure to the surface using the provided screws.

Whakaahua 5.1: Diagram showing the screw installation points within the enclosure and the included mounting hardware.

5.2 Nga Tikanga Waea

The DIHOOL Disconnect Switch Box supports two primary wiring methods:

Whakaahua 5.2: Illustration of Type A (direct wiring with cable gland) and Type B (plug-and-play with solar terminals) wiring methods.

Type A: Direct Wiring through Waterproof Connectors and Terminals

• For this method, use 5-10mm² (10-4AWG) cables.
• Feed the cables through the waterproof cable glands at the bottom of the enclosure.
• Strip the cable insulation and crimp appropriate terminals onto the wires.
• Connect the positive (+) and negative (-) wires from the solar panel string to the corresponding terminals inside the box.
• Connect the output wires to your MPPT controller or inverter.
• Me whakarite kia piri, kia mau hoki nga hononga katoa.
• Tighten the cable glands to maintain IP65 rating.

Type B: Solar Connectors (MC4) for Plug-and-Play

• This method uses MC4 solar terminals for faster and safer connection.
• Use 6mm² (10AWG) cables with pre-attached MC4 connectors.
• Connect the MC4 connectors from your solar panel string directly to the input MC4 ports on the disconnect box.
• Connect the output MC4 ports from the disconnect box to your MPPT controller or inverter.
• Ensure all MC4 connections are fully seated and locked.

Whakaahua 5.3: Kati-ake view of the MC4 solar terminal, indicating compatibility with 6mm² / 10AWG cable.

5.3 Pūnaha Waea Hoahoa

Refer to the following diagram for a typical installation of the disconnect switch box within a solar PV system.

Whakaahua 5.4: A typical wiring diagram showing the connection of the solar panel disconnect switch box between the solar panel array and an MPPT charge controller, leading to a battery bank. The diagram also illustrates the grounding connection.

5.4 Grounding and Sealing

Proper grounding is crucial for safety. Connect the provided grounding wire from the designated grounding terminal inside the enclosure to a reliable earth ground point. Ensure all cable glands are securely tightened after wiring to maintain the IP65 waterproof and dustproof rating.

Whakaahua 5.5: The image highlights the sealing rubber ring and waterproof cable gland, which contribute to the IP65 rating and protect internal components from moisture and dust.

6. Nga Tohutohu Whakahaere

6.1 DC Circuit Breaker Operation

The integrated DC circuit breaker acts as the main disconnect switch. It is designed to interrupt the DC current from the solar panels to the rest of the system.

• Hei Whakakā: Push the breaker switch to the "ON" position (typically indicated by a color, often red).
• Hei Whakaweto: Push the breaker switch to the "OFF" position (typically indicated by a color, often green). This disconnects the solar array from the system.
• In case of an overcurrent event, the breaker will automatically trip to the "OFF" position. Investigate the cause before resetting.

6.2 Surge Protector Status

The surge protector is designed to protect your system from lightning strikes and voltage ngaru.

• The surge protector has an indicator light.
• If the indicator light is kākāriki, the surge protector is functioning correctly.
• If the indicator light turns whero, it indicates that a lightning strike or significant surge has occurred, and the surge protection module needs to be replaced.

Whakaahua 6.1: This image illustrates the difference between DIHOOL's surge protector, which uses a standard lightning protection chip for effective voltage release, and other brands that may use less effective piezoresistors.

7. Tiaki

7.1 Tirotiro Whānui

• Periodically inspect the enclosure for any signs of damage, cracks, or loose connections.
• Ensure the transparent viewing window is clean for clear visibility of the breaker and surge protector status.
• Check that all cable glands are securely tightened.

7.2 Surge Protector Replacement

If the surge protector indicator turns red, the module has absorbed a surge and needs replacement to ensure continued protection.

• WHAKATŪPATO: Disconnect all power to the solar array and the system before attempting to replace the surge protector.
• Whakatuwheratia te kati.
• Carefully remove the old surge protector module from its DIN rail mounting.
• Install a new, compatible surge protector module (DC 1000V 2P 20kA / 40kA Type 2).
• Katia kia mau te kati.
• Restore power and verify the new surge protector indicator is green.

7.3 Disassembly of Solar Terminals (MC4)

If you need to disconnect MC4 solar terminals, use an MC4 wrench as shown below:

Whakaahua 7.1: Step-by-step guide for safely disassembling MC4 solar terminals using a specialized MC4 wrench. This process involves preparing the wrench, inserting it into the terminal groove, clamping, and applying force to separate the terminals.

8. Te Raru

9. Nga Korero Whakaputanga

DIHOOL products are manufactured to high-quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or contact DIHOOL customer support. The warranty typically covers defects in materials and workmanship under normal use.

10. Tautoko Kiritaki

If you encounter any issues or have questions regarding your DIHOOL Solar Panel Disconnect Switch Box, please contact DIHOOL customer support through the retailer where you purchased the product or visit the official DIHOOL webpae mo nga korero whakapā.

For more information about DIHOOL products, you can visit the DIHOOL Store on Amazon.