Table of Contents
Advertisement
1MRK 511 409-UUS Rev. K
11.11.9.1
Verifying the signals and settings
The voltage can be injected using common test equipment.
Verifying the warning and alarm time limit of THD, WrnLimitTHD and tDelayAlmTHD
1.
Supply the IED with voltage at rated value.
2.
Apply harmonics at the numerical multiple of fundamental frequency along with the injected voltage
signal.
3.
Slowly increase the harmonic amplitudes until the THDWRN signal appears.
4.
Compare the harmonic amplitude level value with the set warning limit value.
5.
Continue to inject the same level of harmonics level until the THDALM signal appears and note
down the time from THDWRN set to THDALM set.
6.
Compare the noted time value with the set time limit value of alarm.
Verifying the warning and alarm time limit of individual harmonic distortions IHD,
WrnLimit#HD and tDelayAlm#HD (where # = 2
1.
Supply the IED with voltage at rated value.
2.
Apply 2
3.
Slowly increase the harmonic amplitude until the 2NDHDWRN signal appears.
4.
Compare the harmonic amplitude level value with the set warning limit value.
5.
Continue to inject the same level of harmonics level until the 2NDHDALM signal appears and note
down the time from 2NDHDWRN signal set to 2NDHDALM signal set.
6.
Compare the noted time value with the set time limit value of alarm.
7.
Repeat Steps
11.11.9.2
Completing the test
Continue to test another function or end the test by changing the TestMode setting to Off. Restore
connections and settings to their original values, if they were changed for testing purposes.
11.12
Metering
11.12.1
Pulse-counter logic PCFCNT
The test of the Pulse-counter logic function PCFCNT requires the Parameter Setting tool in PCM600 or
an appropriate connection to the local HMI with the necessary functionality. A known number of pulses
with different frequencies are connected to the pulse counter input. The test should be performed with
settings Operation = Enable or Operation = Disable and the function blocked or unblocked. The pulse
counter value is then checked in PCM600 or on the local HMI.
11.12.2
Function for energy calculation and demand handling ETPMMTR
Prepare the IED for verification of settings as outlined in section "Overview " and section "Preparing for
test" in this chapter.
Phasor measurement unit RES670
Commissioning manual
nd
order harmonic along with injected voltage signal.
2
to
6
for the harmonics until 9
© 2017 - 2022 Hitachi Energy. All rights reserved
Testing functionality by secondary injection
nd
rd
th
th
, 3
, 4
...9
)
th
order.
Section 11
GUID-1A5BBF82-94AE-4E87-B951-CA007CC36CF1 v1
GUID-3E56D8AC-9461-4EEA-83A8-522CA177563E v1
GUID-17EC5D60-A748-46F4-8F13-A77E9CA3D17D v3
GUID-EDB51B29-9556-4EF4-94E6-5DC6B8C0F13A v1
SEMOD53588-1 v1
M13405-2 v7
GUID-4FC03017-93BD-4B30-A874-487BF89971D5 v1
145
Advertisement
Table of Contents
