Eaton PDI Static Transfer Switch
Seamless power transfers for critical loads

Eaton Products

PDI Static Transfer Switch Models

Eaton PDI Static Transfer Switch

#PDI-STS
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Overview:

The PDI Static Transfer Switch supplies critical loads with a choice between two available sources of electrical power. By continually monitoring power quality, the PDI Static Transfer Switch automatically transfers to an alternate source within a quarter cycle and without interruption of power to even your most sensitive critical loads.

Triple redundancy

The true system redundancy provides the ultimate in power system reliability.

Compact enclosure, modular design

Modular interior design results in higher quality throughout the product line and the new 2000Amp has the smallest footprint in the industry.

Rigorous five-step quality process

Vendor quality partnership using PDI designed test equipment and procedures
Functional component testing
Component level tests in simulated STS environment
Module level test
Verification of final product system performance.

Volt second synchronization

The PDI Static Transfer Switch transfer algorithm is optimized to switch power sources quickly all while minimizing voltage disruptions and preserve transformer flux balance. This is achieved by rapidly firing the SCRs to establish a balance point as quickly as possible by analyzing the voltage disruption and volt-second balance. The result is a faster and cleaner transfer of power with typically 1X unit rating or less in rush current regardless of the load make up and size.

Dual redundant display

In the event of a touchscreen display failure the PDI Static Transfer Switch can be operated via the redundant operator interface. This manual interface enables the operator to select mode of operation and source (1 or 2) enabling continuous operation and maximze uptime.

Communications package

The PDI Static Transfer Switch communication package enhances the overall reliability and availability of power to your facility by:

Providing instantaneous access to redundant sources of power
Enabling on-line maintenance of upstream equipment
Showing real time wave form captures on the color touch screen
Gathering power data from downstream BCMS devices (PDU, RPP).

Specifications:

	Stand alone	With one 9” side facing side car	With one 21” front/side facing side car	Without side cars
Ratings (A)	Dimensions W x D x H (in.)	Dimensions W x D x H (in.)	Dimensions W x D x H (in.)	Weight (lb.)
250	36.5 x 32.75 x 74.75	44.75 x 32.75 x 74.75	56.75 x 32.75 x 74.75	900–408
400	36.5 x 32.75 x 74.75	44.75 x 32.75 x 74.75	56.75 x 32.75 x 74.75	900–408
600	36.5 x 32.75 x 74.75	44.75 x 32.75 x 74.75	56.75 x 32.75 x 74.75	900–408
800	48 x 32.75 x 74.75	56.25 x 32.75 x 74.75	68.25 x 32.75 x 74.75	1,100–499
1000-1200	84 x 43 x 74.75			4,000–1,814
1600	89.25 x 43 x 74.75			3,600–1,633
2000	90 x 60 x 84			5,800–2,630

Eaton PDI Static Transfer Switch Specifications
Redundancy	Fail safe daul redundant display. Triple redundant logic. Dual redundant gate drivers for SCRs. (Two gate drivers for each SCR) Two output switches available.
Logic	Power or gate mode (POG). Volt second synchronization Mode (VSS) limits in-rush for 480 volt systems during: -Initial sart up, restarts and transfers. VSS soft start up, restart or transfer limits to 1.5 times in-rush up to 180 degrees out of phase, typically less than 1 time.
Security	Layered security through log on access. User log-on ID and PIN number required for STS operation. All log-ins are time and date stamped for future reference. Event/alarm memory is 2MB
Installation and maintenance	Hot swap capability for printed circuit boards (PCB). Bypass allows for replacement of PCB while STS is powered and connected to the load. Hot swap capability for touch screen Graphical User Interface (GUI). By engaging the rdundant analog control panel, the GUI may be replaced without interrupting power. Front access onl required for I/R scans of all terminations. SCR module is on draw-out slides for ease of service. Logic module is on draw-out slides for ease of service and greater access for I/R scans.
Monitoring	Fail safe dual redundant display Redundant control panel. All status, event and alarm logs may be viewed via web browser (STS may NOT be operated via the internet). Events will continue to record up to 10 seconds after loss of power. Real-time capture of wave forms. Branch circuit monitoring system (BCMS) available. Graphic depicition of load trends. Graphic depiction of voltage and current harmonics. All STS stored data is captured and available at the switch. Voice assistance for alarms and help.
Graphical user interface (GUI)	Fully functional touch screen. 10.4-inch LCD touch screen. 640 x 480 resolution. 262K color. Redundant fail safe control panel.
Communications protocol	Modus TCT/IP Modbus RTU through RS 422/485 port. SNMP. Web enabled through web browser (TCP/IP). Email alerts. NTP time setting. Alarm log download via USB.

Models:

Documentation:

Download the Eaton PDI Static Transfer Switch Datasheet (PDF).

Pricing Notes:

Pricing and product availability subject to change without notice.