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L60 LINE PHASE COMPARISON SYSTEM – INSTRUCTION MANUAL
TESTING
CHAPTER 5: SETTINGS
5
Table 5-44: Test mode operation
5.10.3 Force contact inputs
SETTINGS
TESTING
FORCE CONTACT INPUTS
The force contact inputs feature provides a method of performing checks on the function of all contact inputs.
While in Forcible test mode, the relay contact inputs can be pre-programmed to respond in the following ways:
•
If set to “Normal,” the input remains fully operational. It is controlled by the voltage across its input terminals and can
be turned on and off by external circuitry. Select this value if a given input must be operational during the test. This
includes, for example, an input initiating the test, or being a part of a user pre-programmed test sequence.
•
If set to “Open,” the input is forced to report as opened (Logic 0) while the operand selected by
TEST MODE FORCING
setting is On, regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
•
If set to “Closed,” the input is forced to report as closed (Logic 1) while the operand selected by
TEST MODE FORCING
setting is On regardless of the voltage across the input terminals. While the selected operand is Off, the input behaves
as it does when in service.
5.10.4 Force contact outputs
SETTINGS
TESTING
FORCE CONTACT OUTPUTS
The force contact outputs feature provides a method of performing checks on the function of all contact outputs.
TEST MODE
FUNCTION
In-service
LED
Test mode
LED
Critical fail
relay
TEST MODE
FORCING
Contact input and output behavior
Disabled
Unaffected
Off
Normal
No effect
Normal
Isolated
Off
On
De-energized No effect
Contact outputs disabled
Forcible
Off
Flashing
De-energized Off
Normal
On
Controlled by forcing features
On restart, the
TEST MODE FORCING
setting and the force contact input and force contact output settings revert to
their default states.
FORCE CONTACT
INPUTS
FORCE Cont Ip 1
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip 2
: Normal
Range: Normal, Open, Closed
FORCE Cont Ip xx
: Normal
Range: Normal, Open, Closed
On restart, the
TEST MODE FORCING
setting and the force contact input and force contact output settings revert to
their default states.
FORCE CONTACT
OUTPUTS
FORCE Cont Op 1
: Normal
Range: Normal, Energized, De-energized, Freeze
FORCE Cont Op 2
: Normal
Range: Normal, Energized, De-energized, Freeze
FORCE Cont Op xx
: Normal
Range: Normal, Energized, De-energized, Freeze