Force Contact Inputs; Force Contact Outputs - GE C70 Instruction Manual
Capacitor bank protection
and control system
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- Instruction manual (672 pages)
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TESTING
Table 5-40: Test mode operation
TEST MODE
FUNCTION
Disabled
Isolated
Forcible
On restart, the
their default states.
5.11.3 Force contact inputs
SETTINGS TESTING FORCE CONTACT INPUTS
FORCE CONTACT
INPUTS
5
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
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
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.
On restart, the
their default states.
5.11.4 Force contact outputs
SETTINGS TESTING FORCE CONTACT OUTPUTS
FORCE CONTACT
OUTPUTS
The force contact outputs feature provides a method of performing checks on the function of all contact outputs.
5-312
In-service
Test mode
Critical fail
LED
LED
relay
Unaffected
Off
Normal
Off
On
De-energized No effect
Off
Flashing
De-energized Off
setting and the force contact input and force contact output settings revert to
TEST MODE FORCING
FORCE Cont Ip 1
: Normal
FORCE Cont Ip 2
: Normal
FORCE Cont Ip xx
: Normal
setting and the force contact input and force contact output settings revert to
TEST MODE FORCING
FORCE Cont Op 1
: Normal
FORCE Cont Op 2
: Normal
FORCE Cont Op xx
: Normal
TEST MODE
FORCING
No effect
On
Range: Normal, Open, Closed
Range: Normal, Open, Closed
Range: Normal, Open, Closed
Range: Normal, Energized, De-energized, Freeze
Range: Normal, Energized, De-energized, Freeze
Range: Normal, Energized, De-energized, Freeze
C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
Contact input and output behavior
Normal
Contact outputs disabled
Normal
Controlled by forcing features
TEST MODE FORCING
TEST MODE FORCING
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