ABB 800 Series Turbine Modules

ABB 800 Series Turbine Modules

DESCRIPTION

The Auto Synchronizer AS800 adds automatic  circuit-breaker closure capability to the System  800xA or to any other controller with Profibus  interface. It can be used for generator to grid  synchronization, as well as for peer to peer  bus synchronization in switchyard applications.  The AS800 module supports high and low  range (0-130 VAC and 0-50 VAC) bus input  voltages operating at either 50 or 60 Hz.  The AS800 functionality includes automatic  matching of voltage, frequency and phase, as  well as automatic generator breaker closure.  

Additional Features

Built-in Profibus Interface

„ Non-proprietary communication for true  open architecture integration  

„ Master and Line Redundancy

Sync Verification

The AS800 has a built-in independent  synchronization circuit which serves as a  check to the primary circuit.  When voltage, frequency, and phase match  occur, the AS800 will only close the breaker  when the primary and secondary  synchronization circuits are in agreement.

Dead Bus Capability

The AS800 has the intelligence to recognize  dead bus situations, and upon external  enabling (Dead Bus Enable input), will perform  breaker closure.

Stand-Alone Mode

The AS800 can operate in harmony with a  master controller (such as AC800M) via  Profibus communication. It can also operate  independently with hard-wired digital inputs  and serial communication via an RS-232  physical interface.

Inputs

The AS800 field inputs include two AC  voltage signals (buses to be synchronized)  and eight digital inputs for process  feedbacks and Stand-Alone Mode interface.

2 AC Inputs (120VAC 50/60Hz)

„ Line / Generator  

„ Bus A / Bus B (switchyard applications)

2 Digital Inputs (24/48/125VDC, 120VAC)

„ Generator Breaker  

„ Dead Bus Enable

6 Digital Inputs (24/48VDC)

„ Breaker Status Feedback 

„ Independent Relay Feedback 

„ 4 Stand Alone Mode Permissives

Outputs

There are six outputs used to drive external  relays (ROM810) for voltage regulator  control, frequency control, and generator  breaker control.The two breaker control relays, Main and  Indicheck, can be connected in series.

6 Relay Outputs

„ Generator Breaker Main  

„ Generator Breaker Indicheck  

„ Volts Raise  

„ Voles Lower  

„ Speed Raise  

„ Speed Lower