IN
Magnitude=75mA; Angle=180 degrees
UN
Magnitude=100V; Angle=0 degrees
3.
Within the reset time (that is 5s with above setting) re-apply the above quantities again for
100ms and repeat this step for at least the same number of times as set under setting
UN>StartsNo
(at least 4 times with above settings).
4.
The following signals are given from the APPTEF function:
•
STUN at the beginning of every injection period of 100ms.
•
WRNFW at the beginning of every injection period of 100ms
•
STFW and STIEF appear after the fourth injection period of 100ms (when
UN>StartsNo
=4 as set above)
•
TRIP comes after 2s (set
tTrip
time) after the STFW signal has appeared
The dead time between two set injection pulses of 100ms is less than the set
tReset
time, otherwise the function does not operate.
11.4.18.2
Completing the test
GUID-FEA7B2D1-3F4A-43FD-98F8-EC3584E5B511 v1
Continue to test another function or end the test by navigating to
Main menu/Test/IED test mode/
TESTMODE: 1
and change the IEDTestMode setting to Off. Restore connections and settings to
their original values, if they were changed for testing purposes.
11.5
Voltage protection
SEMOD53540-1 v1
11.5.1
Two step undervoltage protection UV2PTUV
M13796-2 v6
Prepare the IED for verification of settings as outlined in section
11.5.1.1
Verifying the settings
M13796-9 v3
Verification of start value and time delay to operate for Step 1
M13796-29 v11
1.
Check that the IED settings are appropriate, especially the START value, the definite time delay
and the
1 out of 3
operation mode.
2.
Supply the IED with three-phase voltages at their rated values.
3.
Slowly decrease the voltage in one of the phases, until the START signal appears.
4.
Note the operate value and compare it with the set value.
The operate value in secondary volts is calculated according to the following
equations:
For phase-to-earth measurement:
U
UBase
VT
VTprim
1
100
3
<
×
×
sec
IECEQUATION2430 V1 EN-US
(Equation 20)
Section 11
1MRK 511 403-UEN Rev. L
Testing functionality by secondary injection
120
Bay control REC670
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание REC670
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