Checking the operation of MAINFUF and PILOTFUF
1.
Simulate normal operation conditions with three-phase voltage on the main fuse group and the
pilot fuse group. Ensure the values are equal to their rated values.
2.
Decrease one of the three-phase voltages on main fuse group or pilot fuse group. The voltage
change must be greater than the set value for
Ud>MainBlock
or
Ud>PilotAlarm
. MAINFUF or
PILOTFUF signals are activated without any time delay.
3.
Set normal conditions as mentioned in step 1. MAINFUF or PILOTFUF signals should reset.
4.
Set
SealIn
to
On
,
UD>MainBlock
to 20% of
UBase
and
USealIn
to 70% of
UBase
.
5.
Apply three-phase voltages with the value slightly below
USealIn
level.
6.
Decrease one of the three-phase voltages on main fuse group. The voltage change must be
greater than the set value for
Ud>MainBlock
. MAINFUF signal is activated.
7.
After more than 5 seconds increase the measured voltage back to the value slightly below
USealIn
level. MAINFUF signal should not reset.
8.
Slowly increase measured voltage to the value slightly above
USealIn
until MAINFUF signal
resets.
9.
Record the measured voltage and compare with the set value
USealIn
.
11.9.3.1
Completing the test
GUID-38A57549-E6BF-46CB-ADFB-79305684EB67 v1
Continue to test another function or end the test by changing the
TESTMODE
setting to
Off
. Restore
connections and settings to the original values, if changed for testing purposes.
11.9.4
Voltage based delta supervision DELVSPVC
GUID-FBFEC9C5-1B76-4688-A00D-9EEB33326966 v1
Prepare the IED for verification of settings outlined in Section
"Preparing the IED to verify settings"
11.9.4.1
Verifying the signals and settings
GUID-B05EE7E5-2360-4036-991A-00747C47A625 v2
Make sure that the function is connected to SMAI function with U3P signal.
Delta supervision function has 6 different modes of operation. Proceed as follows to test the function
in a particular mode.
1.
Set the following parameters:
•
Operation
= On
•
MeasMode
= Phase-to-ground
•
Umin
= 10% of
UBase
•
DelU>
= 50% of
UBase
•
DelUang>
= 10°
•
DeltaT
= 2
•
tHold
= 100
2.
Set the constant voltage input of UL1 = 63.5V at 0° and UL2 = 63.5V at 120° and UL3 at 63.5
-120° secondary at rated frequency.
3.
Based on the mode of operation, carry out the following changes on input condition of Step
detect start condition.
Each mode is given for increase and decrease operation. (3-a and 3-b)
Section 11
1MRK 511 403-UEN Rev. L
Testing functionality by secondary injection
154
Bay control REC670
Commissioning manual
© 2017 - 2022 Hitachi Energy. All rights reserved
Содержание REC670
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