Maintain Plant Process!

Avoid motor damage and costly shutdowns by ensuring the orderly transfer of the sources to your motors. Our complete Syncrotran¨ System and component relays properly execute the transfer of your critical motor loads.

M-4272
Digital High Speed Motor Bus Transfer System

• Provides Automatic and Manual transfer of motor bus systems in power plants and industrial processing plants to ensure process continuity
• High Speed Fast Transfer in 2 to 3 Cycles.
• Automatically selects Fast, In-Phase, Residual Voltage, and Fixed Time motor bus transfers, based on varying system conditions
• Applicable for one way and bi-directional Manual and Automatic transfers
• Can be expanded to accommodate multiple breaker configurations
• Multiple setpoint profiles for various application requirements
• Integrated control, supervisory functions, sequence of events, and oscillograph recording in one device
• Extensive commissioning tools, including ringdown analysis
• Click here to learn more about the M-4272.

M-0272A/M-0236B
Syncrotran¨ Motor Bus Transfer System

• Our Syncrotran¨ System and component relays address fast (high- speed synch-check), in-phase (high-speed synchronizing) and residual (undervoltage) transfer applications
• You can use component relays for specific transfer types, or the Syncrotran¨ System that automatically selects the best method from the three types during the transfer interval

  Enhanced Power Delivery and Safety-

• Dynamically adapts to source conditions, composite motor bus inertia and voltage decay characteristics to automatically determine the best method for transfer- even under adverse fault conditions
• Mitigate the effects of overvoltage, high volts-per-hertz (overexcitation) and hard loading (mechanical shock) to your motors by assuring source transfer with a minimum of electrical and mechanical stress
• Avoid needless power plant shutdown due to unavailability of auxiliary services after faulty source transfer

Syncrotran¨ System
The utility-grade Syncrotran System consists of a Transfer Logic Controller and either a Power Transfer Relay or a High Speed Sync-Check Relay. The system performs all of the necessary logic and control functions for motor bus transfers in two directions by automatically selecting from either fast, in-phase or residual voltage methods. The relays allow the Transfer Logic Controller to supervise a fast transfer by monitoring the phase angle between the motor bus and the new source, and blocking transfer if the angle is excessive. If fast transfer is impossible because of excessive angle, the Power Transfer Relay offers the option of closing the motor bus in-phase with the new source at the very next pass through zero degrees. Should system conditions prevent transfer by either method, the Transfer Logic Controller contains a circuit that measures bus voltage, regardless of the frequency, and allows a residual transfer to occur when the motor bus voltage has decayed to a safe level.

Safeguard the Source!

The M-0236B Power Transfer Relay allows sources with large phase angles, or motor buses with moderate to low composite inertia, to transfer on the first phase coincidence. In that manner, shock to the motors due to excess power transfer is avoided. If transfer near a zero phase angle difference between your motors and the new source is treated as unimportant, consider the fact that a 12¡ phase angle difference can hard load motors with 30% of full load shock. That is stress your rotating machinery should not endure! This is especially true for synchronous motors where the voltage is held up to nominal during the transfer process.

• Ease-of-Use- In a world of menu-driven HMIs on relays, the use of individual control dials for all tunable parameters offers the commissioning engineer the greatest latitude and access to tune the Syncrotran¨ System, or any of the component relays. Having all parameters with easy-to-read, clearly marked controls is a great asset to get the commissioning task performed properly and in a timely fashion.
• Scalable Application- If studies show that only two transfer methods will work under all conditions, a residual voltage transfer can be combined with either a fast (high-speed synch-check) or in-phase (high-speed synchronizer). This creates initial cost savings.
• Meeting Utility Standards- The Syncrotran¨ System and any of the constituent relays meet pertinent ANSI standards, including ANSI C37-90.2 RFI at 35 V/M.
• Application Flexibility- The Syncrotran¨ System will automatically determine the best transfer÷ fast, in-phase, or residual voltage to match the conditions at the instant of transfer. Conditions such as depressed voltage, faults, and different plant loading can all have an effect on the motor bus inertia and voltage during the transfer process. The Syncrotran¨ System possesses the high-speed measurement, decision-making ability and speed-of-command execution for motor transfer applications.
• Application Engineering and Support- Beckwith Electric provides pre-sale and post-sale support from seasoned professionals who know plant operations and motor bus transfer application. We can help you with our knowledge of standards and latest developments in the arena of motor bus transfer, as well as provide expertise on working with our products.

Our value propositions:

• We have extensive experience in all aspects of motor bus transfer.
• Our products are specifically designed to meet the challenges of plant motor bus transfer. We constantly learn and evolve from Standards participation, input from clients, and our vast field experience÷hundreds of units worldwide!
• We are available to assist you with review and integration of your drawings and designs, as well as support for acceptance and installed unit testing. We also supply engineering services for study, engineering, and fabrication of motor bus transfer systems.

For more information about BSE engineering services, contact the factory:

E-mail: sales@beckwithelectric.com
Call (727) 544-2326 or Fax (727) 546-0121