Energizing Check; Voltage Selection; Fuse Failure Supervision - ABB REG650 Technical Manual

1MRK 502 034-UEN -
11.1.7.4
11.1.7.5
11.1.7.6
Technical Manual

Energizing check

Voltage values are measured in the IED centrally and are available for evaluation
by the Energizing check function.
The frequency on both sides of the circuit breaker is also measured. The
frequencies must not deviate from the rated frequency more than +/-5Hz.
The Energizing direction can be selected individually for the Manual and the
Automatic functions respectively. When the conditions are met the outputs
AUTOENOK and MANENOK respectively will be activated if the fuse
supervision conditions are fulfilled. The output signal can be delayed
independently for MANENOK and AUTOENOK conditions. The Energizing
direction can also be selected by an integer input AENMODE respective
MENMODE, which for example, can be connected to a Binary to Integer function
block (B16I). Integers supplied shall be 1=off, 2=DLLB, 3=DBLL and 4= Both.
Not connected input with connection of INTZERO output from Fixed Signals
(FIXDSIGN) function block will mean that the setting is done from Parameter
Setting tool. The active position can be read on outputs MODEAEN resp
MODEMEN. The modes are 0=OFF, 1=DLLB, 2=DBLL and 3=Both.
The inputs BLOCK and BLKENERG are available for total block of the complete
SESRSYN function respective block of the Energizing check function.
TSTENERG will allow testing of the function where the fulfilled conditions are
connected to a separate test output.

Voltage selection

The voltage selection module including supervision of included voltage
transformer fuses for the different arrangements is a basic part of the SESRSYN
function and determines the parameters fed to the Synchronizing, Synchrocheck
and Energizing check functions. This includes the selection of the appropriate Line
and Bus voltages and fuse supervision.
The default voltages used will be ULine and UBus1. This is also the case when
external voltage selection is provided. Fuse failure supervision for the used inputs
must also be connected.
The voltage selection function, selected voltages, and fuse conditions are the
Synchronizing, Synchrocheck and Energizing check inputs.
For the disconnector positions it is advisable to use (NO) a and (NC) b type
contacts to supply Disconnector Open and Closed positions but, it is also possible
to use an inverter for one of the positions.

Fuse failure supervision

External fuse failure signals or signals from a tripped fuse switch/MCB are
connected to binary inputs that are configured to the inputs of SESRSYN functions
Section 11
Control
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