Test Mode Forcing - GE B30 Instruction Manual

TESTING
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 front panel 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 5-35: Test mode operation
TEST MODE
FUNCTION
5
Disabled
Isolated
Forcible
On restart, the
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.
5-276
TEST MODE FORCING:

On
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
Range:
setting dictates further response of the B30 to
TEST MODE FORCING
TEST MODE Contact input and output behavior
FORCING
No effect Normal
Contact outputs disabled
Normal
On Controlled by forcing features
Range: Normal, Open, Closed
Range: Normal, Open, Closed

Range: Normal, Open, Closed
B30 BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS
FlexLogic operand
TEST MODE