SC330D - Solar regulator Projecta - Free user manual and instructions
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| Product Type | Solar Charge Controller |
| Brand | Projecta |
| Model | SC330D |
| Max Solar Input Current | 30A |
| System Voltage | 12V / 24V Auto Detect |
| Max Solar Input Voltage | 50V (12V system) / 100V (24V system) |
| Battery Types Supported | Flooded, Gel, AGM, Lithium (programmable) |
| Charging Algorithm | PWM (Pulse Width Modulation) |
| Display | LCD with backlight |
| Dimensions (W x H x D) | 130 x 70 x 35 mm |
| Weight | 300 g |
| Operating Temperature Range | -35°C to +60°C |
| Protection Features | Reverse polarity, overcharge, short circuit, over-temperature, reverse current |
| Load Control | Yes, with programmable lighting and timer functions |
| USB Output | 5V / 2A (for charging mobile devices) |
| Self-consumption | < 10 mA |
| Grounding | Common positive (negative ground) |
| Warranty | 2 years |
| Included Accessories | User manual, mounting screws |
Frequently Asked Questions - SC330D Projecta
What is the maximum PV input voltage for the SC330D?
The maximum PV input voltage is 50V for a 12V battery system and 100V for a 24V system. Exceeding these limits may damage the controller.
Can the SC330D charge lithium batteries?
Yes, the SC330D supports lithium batteries with programmable charging parameters. Make sure to set the correct battery type via the display menu.
How do I connect the solar panel to the controller?
Connect the solar panel to the terminals marked 'Solar' or 'PV' with correct polarity (positive to positive, negative to negative). Always connect the battery first before connecting the solar panel.
What does the LCD display show?
The LCD displays battery voltage, charging current, solar panel voltage, load status, and battery type. You can cycle through modes using the button.
Is the SC330D suitable for 24V systems?
Yes, the controller automatically detects 12V or 24V systems. However, ensure the total solar panel voltage does not exceed 50V for 12V or 100V for 24V.
How do I set the load timer function?
Press and hold the button for 3 seconds to enter setup mode. Use the button to select 'L01' for dusk-to-dawn or 'L02' for timer (adjustable in hours). Confirm with a long press.
What protections does the SC330D have?
It includes reverse polarity protection (battery and solar), overcharge protection, short circuit protection, over-temperature protection, and reverse current protection at night.
Can I use the USB output while charging?
Yes, the USB output provides 5V/2A for charging phones or other devices, independent of the load terminals. It works even when the load is off.
What is the recommended wire gauge for a 30A system?
For runs up to 5 meters, use 6 mm² (AWG 10) wire. For longer distances, use thicker wire to minimize voltage drop. Always fuse the battery positive line.
How do I reset the controller to factory settings?
To factory reset, disconnect all power (solar and battery). Wait 1 minute, then reconnect the battery first. This will restore default charging parameters for flooded batteries.
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