Test Mode Forcing; Force Contact Inputs - GE b30 Instruction Manual

CHAPTER 5: SETTINGS
Otherwise, the UR remains fully operational while in the Forcible test mode, allowing for various testing procedures. In
particular, the protection and control elements, and FlexLogic function normally. Other than the IEC 61850 protocol,
communications based inputs and outputs remain fully operational. The test procedure must take this into account. Direct
I/O channel tests and PMU tests are usable on applicable models.
The test mode can be selected either through the front panel, through EnerVista UR Setup, or through IEC 61850 control to
LLN0.Mod. LLN0.Mod.ctlVal "on" selects Disabled, "test/blocked" selects Isolated, and "test" selects Forcible. The
setting can only be changed by a direct user command. Following a restart, power up, settings upload, or
FUNCTION
firmware upgrade, the test mode remains at the last programmed value. This allows a UR that has been placed in isolated
mode to remain isolated during testing and maintenance activities.

5.11.2 Test mode forcing

SETTINGS  TESTING  TEST MODE FORCING
 TESTING

When in Forcible mode, the operand selected by the
testing conditions, as described in the following two sections.
The test mode state is indicated on the relay faceplate by a combination of the Test Mode LED indicator, the In-Service LED
indicator, and by the critical fail relay, as shown in the following table.
Table 5-34: Test mode operation
TEST MODE In-service
FUNCTION LED
Disabled Unaffected
Isolated Off
Forcible Off
On restart, the
TEST MODE FORCING
their default states.

5.11.3 Force contact inputs

SETTINGS  TESTING  FORCE CONTACT INPUTS
 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.
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
TEST MODE FORCING:

On
TEST MODE FORCING
Test mode Critical fail TEST MODE
LED relay FORCING
Off Normal No effect
On De-energized No effect
Flashing De-energized Off
On
setting and the force contact input and force contact output settings revert to
FORCE Cont Ip 1

: Normal
FORCE Cont Ip 2

: Normal

FORCE Cont Ip xx

: Normal
Range: FlexLogic operand
setting dictates further response of the B30 to
Contact input and output behavior
Normal
Contact outputs disabled
Normal
Controlled by forcing features
Range: Normal, Open, Closed
Range: Normal, Open, Closed
Range: Normal, Open, Closed
TESTING
TEST MODE
5
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