contronetic(M).Bhd

STS is a critical device in UPS system design by increasing the reliability of electricity supply to equipment:
- Creates redundancy option by linking to 2 UPS with one on hot-standby.
- Connects primary power input to UPS and secondary input to main AC supply.
- Can be used mass maintenance by-pass switch.
- Detects and diverts abnormal load (either too low or too high) automatically from UPS to reserve power source either main AC supply or another standby ups.

Zero-time transfer in synchronized mode

Two power Inputs, one Output

Synchronization of AC power sources

Hybrid static switch topology design

Surge protection

Overload protection

Backfeed protection (3,6kVA models)

Optional management software

Hybrid Static Switch Topology Design

Contronetix STS is adopting Hybrid static-switch topology design for complete compliance with IEC (International Electrotechnical Commission) code62040-3 ,6.2.1.3 : "The advantages of hybrid switches is that they possess the merit of both the electronic & mechanical switches."

Many STS are either using pure mechanical or electronic (solidstate) switching mechanism device. Both methods have its advantages & disadvantages as summarized below:

	Advantages	Disadvantages
Mechanical Switch	Very high tolerance to overload isolation between utility main and UPS	Long transfer switching time. Not acceptable for critical load such as server
Electronic Switch	Extreme low transfer time	- Very low tolerance to current overload. - No isolation between utility main & UPS - Power loss - Highly comparative current between 2 power sources leading to low reliability
Hybrid Switch	- Extreme low transfer time - Good inverter UPS isolation - No power loss - High reliability - Back-feed protection - Full compliance with IEC requirements	NON. Contronetix STS uses electronic switch to carry current load for a very short time until the mechanical switch is activated. Thus, the STS electronic circuitry is not damaged by excessive load leading to higher durability & reliability.