Conventional autosynchronizers are designed to adjust the speed setpoints of governors. Attempts to use these autosynchronizers to directly adjust turbines are frequently unsuccessful. The Clifton Labs Hydro-Synch 100 is a low-cost high-performance autosynchronizer designed to directly control turbines when paralleling to utility systems where speed regulation is required only for synchronizing. Advanced digital technology locks the phase of the generator to the bus before initiating breaker closing. The very low slip frequency (typically less than 0.01Hz) eliminates the uncertainties inherent in breaker closing time compensation schemes.

• Contact outputs drive economical hydraulic solenoid valves or motor contactors for electric actuators.
• Matches frequency and controls phase angle difference between generator and bus.
• Contact outputs to raise/lower voltage compatible with analog voltage regulators.
• Contact output to initiate breaker closing when voltage, frequency, and phase differences are all within specified windows.
• Key-pad and LCD display for setting control parameters and monitoring operation.

Adjustable Parameters

• Maximum rate of actuator movement.
• Frequency ramping rate up to 95% nominal frequency.
• Proportional gain.
• Integral gain.
• Phase gain.
• Minimum bus voltage.
• Maximum bus voltage.
• Maximum voltage error.
• Maximum frequency difference (slip frequency).
• Maximum phase difference (degrees).

Specifications

• Power Supply: 18-36 VDC, reverse polarity protected, may be floating relative to ground
• PT inputs: 120 VAC nominal
• Enable input: dry contact, 24 VDC
• Breaker closing contact
• Turbine and voltage regulator contacts
• Voltage accuracy: +/-0.25% nominal voltage
• Frequency accuracy: 0.3 degree

Connections