Static Transfer Switch (STS)
STS 3 (Three Phase)
The ELSIPOWER three-phase static transfer switch (STS) series provides uninterrupted power transfer for data centers, hospitals, industrial automation systems, server rooms and critical load applications. By switching automatically and reliably between two independent power sources within milliseconds, it offers maximum system continuity against power outages, source failures and power fluctuations.
- Enhanced power quality.
- Easy monitoring of all parameters via LCD display.
- High-speed microcontroller (32 MIPS).
- Power outage protection.
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Highlights
Product features
- Enhanced power quality.
- Easy monitoring of all parameters via LCD display.
- High-speed microcontroller (32 MIPS).
- Power outage protection.
- Automatic static switching.
- Remote monitoring of input sources.
- Easy static and mechanical transfer between separate input sources.
- Remote monitoring and event logging via Modbus (date and time).
- Advanced RS232 communication features.
- Dry contact alarm output.
- Input sources protected by fuses.
- Manual switching and by-pass between two sources via selector switch.
- Parameter protection with user password.
- Real-time clock.
- Automatic transfer test via front panel.
- Continuous power supply through by-pass during maintenance.
- Input phase sequence fault detection.
- Adjustable input voltage lower / upper limits.
Where is it used?
Applications
- Hospitals and operating rooms
- Intensive care units
- Data centers and server rooms
- Telecommunication infrastructures
- Banking and financial systems
- Industrial automation systems
- Manufacturing facilities and factories
- Power plants
- Smart building systems
- Security and surveillance systems
- Laboratories and medical equipment
- Control rooms and SCADA systems
- Airports and transportation infrastructures
- Critical load power systems
- All critical applications requiring uninterrupted power supply
Technical information
Technical specifications
| Model | STS-3 |
|---|---|
| Input phase | Three phase |
| Current | 16 A – 2000 A |
| Poles | 3-pole (no neutral switching) / 4-pole (switched neutral) |
| Voltage | 190 / 200 / 210 VAC, 380 / 400 / 415 VAC, 440 / 460 / 660 VAC |
| Voltage range | ±20% (out-of-range transfer, adjustable) |
| Frequency / range | 50 / 60 Hz · 45 – 65 Hz |
| Efficiency | > 99% |
| Transfer options | Automatic / manual |
| Transfer time | 1/4 cycle (synchronous), 1/2 cycle (non-synchronous); < 5 ms |
| Crest factor | 3:1 |
| Cabinet type | Rack / wall-mount / tower (current dependent) |
| Cabinet colour | RAL7032, RAL7035 (others optional) |
| Protection class | IP20 (optional IP21 – IP55) |
| Cooling | Natural / fan (power dependent) |
| Cable entry | Bottom (optional top, rear, side) |
| Maintenance bypass | MCB / MCCB / CAM switch per source |
| Maintenance | Hot-swap power module, front access |
| Operating / storage temperature | −10 … 50 °C / −25 … 70 °C |
| Relative humidity | 0 – 95% (non-condensing) |
| Standard communication | ModBus RTU (via RS232); optional RS485, ModBus TCP/IP, SNMP, IEC61850 |
| Interface | LED / LCD mimic panel; optional touch screen (HMI) |
| Languages | Turkish, English, German, Dutch, Portuguese, Spanish, Russian |
| Protections | MCB / MCCB on inputs and output; over-temperature, output breaker open alarm; source failure, emergency stop |
| Options | Isolation transformer, metering, transducers (4–20 mA / 0–10 V), SPD, cabinet heater and lighting, service socket |
| Standards | EN 62310-1 (safety), EN 62310-2 (EMC), EN 62310-3 (performance) |
Get a quotation
Request a quote for STS 3 (Three Phase)
Tell us your power requirement and quantity; our engineers will recommend the right configuration and send your quotation the same day.
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