The ABB SD831 Power Supply Unit is a high-performance, switch-mode power supply designed to meet the stringent safety and functionality standards of EN 50178, EN 61131-2, and UL 508. It is ideal for SELV and PELV applications and is suitable for both non-redundant and redundant systems when paired with diode voting units such as SS823 or SS832.
Key Features
Simple Installation: Easy DIN-rail mounting.
High Safety Standards: Class I equipment with over-voltage protection, suitable for TN networks.
Robust Performance: Protected against over-current and over-voltage, with soft-start capability to prevent tripping fuses or breakers.
Redundant Capability: Compatible with redundant configurations using diode voting units.
No External Filter Needed: Built-in compliance eliminates the need for additional mains filters.
Specifications
Type: Power supply
Rated Output Voltage: 24 V DC
Rated Output Current: 3 A
Rated Output Power: 72 W
Rated Input Power: 134/143 VA
Input Voltage Range: 100–240 V AC ±10%, 110–300 V DC -20% / +25%
Efficiency: 88% / 89.8%
Ripple (Peak-to-Peak): < 50 mV
Over Voltage Protection: < 39 V
Electrical Characteristics
Mains Frequency: 50–60 Hz ±6%
Peak Inrush Current: < 28 A / < 54 A
Power Factor: 0.61 / 0.56 at rated output power
Heat Dissipation: 10 W / 8 W
Secondary Voltage Hold-Up Time: 29 ms / 120 ms at mains blackout
Answer 1: PLC DCS Pro Ltd. collaborates with over 50 countries worldwide. As a leading supplier in China, we can provide significant discounts to customers based on market demand.
Question 2: What Is The Warranty Period?
Answer 2: We offer a standard one-year warranty for all new and original items.
Question 3: What Payment Methods Do We Accept?
Answer 3: We accept 100% T/T (Telegraphic Transfer) before shipping. For items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. If you have an agent in China, please contact us for RMB transfer.
Question 4: What Shipping Methods Do We Use?
Answer 4: We primarily utilize carriers such as FedEx, DHL, UPS, BRE, etc. If you have an account with any of these carriers, you can arrange the shipping yourself. Additionally, we offer free shipping to China freight forwarders.
Question 5: What Is Our Delivery Time?
Answer 5: Typically, delivery takes around 1-3 days after receiving the advance payment. For items with a quoted lead time, delivery will occur as per the specified lead time.
Question 6: How Do We Package The Goods?
Answer 6: Our packaging process involves multiple layers of protection. Initially, the product is placed in its original box, sealed with a label. Then, we add a layer of bubble wrap to safeguard against collisions during transportation. Finally, all products are securely packed in sturdy boxes for further protection.
Question 7: How Can Customers Contact Us And Request A Quote?
Answer 7: Customers can inquire via email, WhatsApp, WeChat, Skype, or any preferred communication platform. Simply reach out to us, and we'll promptly provide a quote tailored to your needs.
Warranty Conditions
At PLC DCS Pro Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.
🛡️Coverage Details:
This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.
📝Claim Process:
To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.
🚚Shipping Assistance:
We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.
🚫Exclusions:
Unauthorized modifications, repairs, or misuse of the product.
