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Chapter 4: "SETPOINTS" Menu
4.2
Setpoints page 2: SYSTEM SETUP
SETPOINTS PAGE 2
SYSTEM SETUP
SAMPLING
FREQUENCY: 50 Hz
GROUND CT RATING
PRIMARY: 50 A
OUT OF SERVICE
ON AUX3: YES
BLOCK TRIP
DELAY: 0.15 S
BREAKER DISCREP.
RELAY: – – – –
BREAKER DISCREP.
DELAY: 1000 ms
If
"BREAKER DISCREP. RELAY"
≠
– – – –
MECH. OPERATIONS
RELAY: – – – –
MECH. OPERATIONS
MAXIMUM: 3000
If
"MECH. OPERATION RELAY"
≠
– – – –
END OF PAGE
CURRENT PROTECTION RELAY - IPR-D
This page allows entering the IPR-D parameter values for the system in which it will
operate.
RANGE:
.....................................................................................................
Enter the system frequency.
RANGE:
.......................................................................................................
STEPS:
.........................................................................................................................
Enter the primary current rating of the ground CT being used.
When selecting YES AUX3 relay will perform the SERVICE function: once the power is
applied, the relay will make AUX3 react and the related contact will be opened. In case of
fault of the relay (OUT OF SERVICE led "On") or of loss of power supply, AUX3 will pass
to stand-by position and close its contact.
When selecting NO AUX 3 will be managed as AUX1, AUX2 and TRIP; remark that,
unlike these last ones, AUX3 contact is normally closed.
Enter the time of TRIP intervention blocking.
For enabling BLOCK TRIP function a digital input must be configured as BLOCK TRIP
(see setpoint page 6 DIGITAL INPUT)
It allows selecting the output signalling the discrepancy between the trip command sent
by the protection relay and the signal received at the BREAKER STATUS input from the
circuit breaker or disconnector auxiliary contact.
This error information signals that the trip command has not provoked the opening or that
the auxiliary contact (52a) does not operate properly.
Disable this function in case of no connection between 52a auxiliary contact and
BREAKER STATUS input.
For disabling the function ⇒ select "– – – –".
REMARK: The procedure for selection is described at page 4.2
RANGE:
...............................................................................................
STEPS:
....................................................................................................................
Delay for the circuit breaker auxiliary contacts to signal the opening. If a correct reply is
not obtained in this delay, an event for circuit breaker discrepancy will be displayed and
the selected contact will activate.
Select the relays to be activated when reaching the max. number of mechanical
operations set in the next Line.
REMARK: The procedure for selection is described at page 4.2
RANGE:
..............................................................................................................
STEPS:
.............................................................................................................................
Enter the max. number of mechanical operations.
This value represents the granted quantity of mechanical operations carried out by the
circuit breaker and the event indicates that maintenance is required.
Last LINE of PAGE 2.
Press LINE or ▲PAGE, to pass to the first line of PAGE 3.
4.3
50 Hz; 60 Hz
5 A ÷ 5000 A
5 A
10 ms ÷ 2500 ms
10 ms
5 ÷ 9995
Manual P/N: IPR-D GBM 01/09/2006
5
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