M-5625 Syncrocloser® Digital Synchronizing System

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

Digital Synchronizing System

When the M-3410A relay is connected with Line-Line voltage input, the following functions are available (refer to Figure 7 for wiring connections).

  • Sync-check with Phase Angle, ∆V and ∆F 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 (refer to Figures 5 and 6).

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

M-0423 10′ RS-232 Serial Null-Modem Cable

M-0433 10′ USB to Serial Adapter with RS 232 Serial Null-Modem Cable (DB9 to DB9)

M-3933 10′ RS 232 Serial Modem Cable (straight through DB9 to DB25)

M-3908 Universal Contact Input Adapter