10.4.3 Setting guidelines
IP15039-1 v1
10.4.3.1 Recommendations for input and output signals
M6496-75 v4
Recommendations for
Input signals
M6496-79 v5
Please see the default factory configuration.
BLOCK: The input will block the operation of the Overexcitation protection
OEXPVPH (24), for example, the block input can be used to block the operation for a
limited time during special service conditions.
RESET: OEXPVPH (24) has a thermal memory, which can take a long time to reset.
Activation of the RESET input will reset the function instantaneously.
Recommendations for Output signals
M6496-84 v7
Please see the default factory configuration for examples of configuration.
ERROR: The output indicates a measuring error. The reason, for example, can be
configuration problems where analogue signals are missing.
BFI: The BFI output indicates that the level Pickup1> has been reached. It can be used
to initiate time measurement.
TRIP: The TRIP output is activated after the operate time for the V/f level has expired.
TRIP signal is used to trip the circuit breaker(s).
ALARM: The output is activated when the alarm level has been reached and the alarm
timer has elapsed. When the system voltage is high this output sends an alarm to the
operator.
10.4.3.2 Settings
M6496-91 v7
GlobalBaseSel: Selects the global base value group used by the function to define
IBase, VBase and SBase as applicable.
Operation: The operation of the Overexcitation protection OEXPVPH (24) can be set
to Enabled/Disabled.
MeasuredV: The phases involved in the measurement are set here. Normally the three
phase measurement measuring the positive sequence voltage should be used but when
only individual VT's are used a single phase-to-phase can be used.
MeasuredI: The phases involved in the measurement are set here. MeasuredI: must be
in accordance with MeasuredV.
1MRK 504 163-UUS A Section 10
Voltage protection
Transformer protection RET670 2.2 ANSI 629
Application manual
To Next Page
Need help?
General
