Static Transfer Switch (STS)
Application
- Data Centers and Servers
- Medical Equipment, Operation Theater.
- CNC Machines
- Pharma Manufacturing Plant
- Petrochemical Industries
Description
The static transfer switch (STS) is static AC Switch designed to transfer load from one source to another source automatically. This works for single phase or three phase load. This consist of back to back thyristor connected in parallel, as shown in figure.The STS functions like mechanical switch i.e. double pole input single pole output.Or three pole input single pole output, Or three pole input three pole output. Many such combinations can be achieved through STS in automatic mode. The STS shall provide an effective solution to the following needs :
◗ complete separation of two sources and of the associated distribution systems.
◗ source redundancy with no-break transfer of the loads, in existing installations.
◗ separation of loads to avoid mutual disturbances.
| Configuration Available | Range Available | Download Brochure |
|---|---|---|
| Single Phase | 5 to 100 KVA | Download Brochure |
| Three Phase | 30 to 300 KVA | Download Brochure |
Key Features
- System control based on Parallel Processor VLSI Technology.
- Capable of sourcing load with crest factor 1:3 as well as unity power factor load.
- Designed to work with 48 to 52 Hz AC source 1 phase or 3 phase + Neutral.
- Change over for each phase at Zero Crossing of Voltage cycle.
- Synchronous & Asynchronous Transfer within 10– 20 mSec at Zero cross.
- Auto / Manual Re-transfer selections available.
- High MTBF of the average of 10000 Hrs.