Solivi Research & Development

SDAUPSA Universal Uninterruptable Power Supply

The SDAUPSA is a state-of-the-art uninterruptible power supply (UPS) control device that offers reliable and robust power backup solutions for a wide range of applications. It has been developed at the base to eliminate the major single point of failure for the VELBUS home automation system, ensuring with it an exceptional uptime of 99,999%. However, it can also be used universally with other systems which are falling within the boundaries set forth in this technical specifications document.

Achieve 5 nines of availability for your home automation.

Thanks to its innovative design, the SDAUPSA allows for maintenance to be performed while it is in operation. The power supplies and batteries are hot-swappable, as long as the correct procedure is followed. This results in minimal downtime, ensuring high availability.

The backup power supply remains off-grid until it is needed, reducing energy waste and extending the lifespan of the backup power supply unit (PSU). The backup PSU is activated only when the main PSU's secondary voltage drops below 15VDC. The transition to the backup PSU is going unnoticed by the home automation configuration due to the battery which maintains an adequate voltage level during the failover.

In the event of a failover, there is no need to rush to replace the failing PSU, as the backup PSU is in its nearly new state. This gives users peace of mind and ample time to replace the failing PSU without significant risk.

In addition to its power backup capabilities, the SDAUPSA also includes an over-voltage protection feature, which safeguards the entire electrical installation. When a voltage of over 275VAC is detected, the residual current device (RCD) is triggered. For optimal performance, it is recommended to install the SDAUPSA at the beginning of the electrical installation.

With its advanced features and dependable performance, the SDAUPSA is an ideal choice for those seeking a cost-effective and easy-to-use solution for eliminating a major single point of failure in power supply and ensuring high levels of availability for connected devices, whilst protecting the home for overvoltage at the same time.

Features :

Automatic failover
Manual failover possible
Two batteries can be connected (home automation / alarm)
Automatic battery charge
Automatic overvoltage protection
Hot-swappable maintenance possible
High availability (99%999)
Energy-efficient

Specifications :

Category	Nature	Value
Input	AC voltage	85 ~ 264 VAC
	Frequency	47 ~ 62 Hz
	AC current	1.0 A max
	Inrush current	60A max
Output Primary (Main & Backup)	AC voltage	85 ~ 264 VAC
	Frequency	47 ~ 62 Hz
	AC current	6.0 A max
Output Secondary (BUS)	DC voltage	12 ~ 18 VDC
	DC current	6.5 A max
	Ripple & Noise	120mVp-p max
	Setup / Rise time	500ms / 50ms
Output Secondary (Main & Alarm Battery)	DC voltage	12 VDC
	DC capacity	7 Ah / 18 Ah
	DC current (auto fused)	6 A
	Type	Lead-Acid
	Trickle charge	80 ~ 120 mA
Failover	Automatic	< 0.5 sec
Failover	Manual	in case of thermal instability
Input protection (RCD trigger)	AC voltage (L-PE, N-PE)	275 VAC
Connectivity	to the BUS	Scew terminals
Connectivity	all others	Push terminals £ 4.0mm²
Dimensions	DIN-rail	6-modules
Dimensions	L x W x H	115 x 90 x 58 mm

Connectivity :

Hot Swap procedure :

Hot-swap flowchart

Feature	Duration	Availability	Main PSU	Backup PSU	Backup Battery
Automatic failover (with micro-cut)	no limit	99%9	connected	connected	missing
Automatic failover (unnoticeably)	Battery capacity	98%	connected	missing	connected
	Battery capacity	98%	missing	connected	connected
	no limit	99%999	connected	connected	connected
Hot-Swappable (switch set to "Main")	no limit	99%999	yes	yes	yes

If one uses the VELBUS SOLIVI Alarm logic, then it is mandatory to have a Backup Battery connected

This device should only be connected by a professional electrician.
There are no serviceable parts inside the control box, opening the device destroys it and voids the warranty.