Integrated Synchronizing System¨ for Generator and Intertie Synchronizing

• Facilitates standardization for generator and system intertie sync check applications
• Assure safe and accurate connection of a generator to the power network
• Provides accuracy and independent controls; no additional instrumentation is required for field setting
• Breaker closing times are field programmable
• Local and remote serial communications (MODBUS protocol) capability for monitoring and control functions

The M-5625 Syncrocloser Digital Synchronizing System is suitable for the automatic synchronizing of a generator to the electric power network. The system provides speed and voltage "jogs" to bring a generator to proper conditions of matching voltage and frequency, prior to safely and accurately closing a breaker into a bus energized by an electric power network.

The Digital Synchronizing System is intended for three general classes of application:

• Initial connection of a generator to a power network
• Closure of a network breaker where there is a possibility of a split of the system into two isolated networks having different frequencies
• Breaker closure applications with a static phase angle
• Automatic Synchronizing
• The system can also be used for manual synchronizing application.

Digital Synchronizing System
When the M-3410A relay is connected with Line-Line voltage input, the following functions are available (refer to the Specification for wiring connections).

• Sync-check with Phase Angle, DV and DF with dead line/dead bus options (25)
• Reconnect enable (79) for intertie application
• Phase undervoltage (27) detection
• Dual-setpoint, single or three phase, directional power monitoring that can be selected as over power or under power (32) detection (requires current transformer input)
• Negative sequence overvoltage (47) detection
• Phase overcurrent (51) detection (requires current transformer input)
• Phase overvoltage (59) detection
• VT fuse-loss detection and blocking (60FL)
• Four-step over/under frequency (81) detection

If a line-neutral is applied to the single VT input of the M-3410A only the Synch-Check (25) Function is viable. The (51) Function may also be active for this voltage configuration if current input is connected as well.

Standard Features

• Selectable Anti-Motoring and Anti-Pump
• Adjustable Jog Durations, proportional to error, for Voltage and Speed Controls
• Time Between Jogs adjustments bring the generator to a matched condition in minimum time and eliminate overshoot and hunting by accounting for inertial and control lags
• Kicker Pulse brings phase angle around through zero if speed is matched but synchronism has not yet occurred. Adjustable pulse duration compensates for the sensitivity of the governor.
• One Auto-sync output, two Sync-check outputs, one self-test output, two enable inputs, and two control/status inputs
• Oscillographic recording (COMTRADE file format)
• Time-stamped sequence of events recording for 32 events
• Metering of Voltage, Delta Voltage, Frequency, Delta Frequency, Phase Angle, Current and Sync Scope indication
• One RS-232 port (COM1) on front and one RS-232 or 485 port (COM2) on rear
• M-3810A IPScom¨ For WindowsTM Communications Software
• MODBUS protocol
• Supports both 50 and 60 Hz applications
• Accepts 1A or 5 A rated CT inputs
• Continuous Self-Diagnostics

Optional Features

• M-3801D IPSplot¨ PLUS Oscillograph Analysis Software
• Horizontal and Vertical panel mount versions available
• Standard 19" Rack Mount Available

Sales and Service

For sales and service information contact your local representative or contact the factory:

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