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226 - Z3 REACH:
229 - Z2 TIMER:
230 - Z3 TIMER:
Apply the three voltages and the phase A current as indicated by the AG99 fault
(see fault list). With a delay of less than 400 ms apply the currents for phases B and C
modifying their phases in such a way that the phase B and C currents are leading their
respective voltages by 90°. Ensure that the relay performs a ROD trip by checking the
indication on the monitor or the corresponding event in the event log.
6.2.13 DD FUNCTION (MLP3000)
Check In the Relay Status menu that the DD is inactive and observe how it
activates when applying any fault.
6.2.14 FF FUNCTION (MLP3000)
-Set the following protection setting:
204 - FF IN SERVICE:
Apply the voltages and currents corresponding to a balanced system with the
voltages to the rated voltage (67V) and ensure. View the FF status in the Relay status
menu and check that when the voltage falls in any of the three phases the FF activates
and recuperates when the voltage returns.
6.2.15 TRIP BLOCKS (Settings and Input)
Set the following protection settings:
208 - PROTEC. SCHEME
209 - PROT. IN SERVICE
213 - Z3 TRIP:
214 - Z2 TRIP:
215 - Zl TRIP:
219 - POSITIVE SEQUENCE IMPEDANCE (ZL1 IMPED):
220 - POSITIVE SEQUENCE ANGLE (ZL1 ANGLE):
221 - ZERO SEQUENCE CURRENT COMPENSATION (K0):
222 - ZERO SEQUENCE ANGLE(ZL0 ANGLE):
223 - Z1 REACH:
225 - Z2 REACH:
226 - Z3 REACH:
227 - Z1 TIMER
229 - Z2 TIMER:
230 - Z3 TIMER:
PROHIBIT A TRIP IN ZONE 1, apply a fault in Zone 1 (i.e. AG50) and check that
the relay trips in Zone 2.
GEK-98846A
82
15.0
140
200
YES
0 = D.E.
YES
YES
YES
YES
5.0
87°
3.1
73º
3.00
4.00
15.0
0
140
200
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