ABB REG670 Commissioning Manual page 246

Section 13
Testing functionality by secondary injection
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240
Main menu/Settings/Setting Group N/Control/
TransformerVoltageControl(ATCC,90)/TR1ATCC:x/TR8ATCC:x/General
and
Main menu/Settings/Setting Group N/Control/
TransformerVoltageControl(ATCC,90)/TR1ATCC:x
• Confirm that the setting for short circuit impedance Xr2 for TR1ATCC or
TR8ATCC is in accordance with transformer data:
• Short circuit impedance, available on the local HMI under Main menu/
Settings/General settings/Control/
TransformerVoltageControl(ATCC,90)/TR1ATCC:x/TR8ATCC:x/
Xr2.
• Confirm that the setting for TCMYLTC or TCLYLTC is in accordance with
transformer data:
• Tap change timeout duration - effectively the maximum transformer tap
change time, tTCTimeout, available on the local HMI under Main menu/
Settings/Setting Group N/Control/TransformerTapControl(YLTC,
84)/TCMYLTC:x/TCLYLTC:x/tTCTimeout.
• Load tap changer pulse duration - required length of pulse from IED to
load tap changer, tPulseDur, available on the local HMI under Main
menu/Settings/Setting Group N/Control/
TransformerTapControl(YLTC,84)/TCMYLTC:x/TCLYLTC:x/
tPulseDur.
• Transformer tap range, LowVoltTap and HighVoltTap, available on the
local HMI under Main menu/Settings/General Settings/Control/
TransformerTapControl(YLTC,84)/TCMYLTC:x/TCLYLTC:x/
HighVoltTap and .
• Load tap changer code type - method for digital feedback of tap position,
CodeType, available on the local HMI under Main menu/Settings/
General settings/Control/TransformerTapControl(YLTC,84)/
TCMYLTC:x/TCLYLTC:x/CodeType.
During the installation and commissioning, the behavior of the
voltage control functions for different tests may be governed by a
parameter group, available on the local HMI under Main menu/
Settings/General settings/Control/
TransformerVoltageControl(ATCC,90)/TR1ATCC:x/
TR8ATCC:x. These parameter settings can cause a Total Block,
Automatic Block or Alarm for a variety of system conditions
including over and under voltage, over current and tap changer
failure. It is important to review these settings and confirm the
intended response of the voltage control function for different
secondary injection tests.
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
1MRK 502 073-UEN A
Commissioning manual