output for this measurement is 1 then QB1 and QB2 are in the open position. A zero
indicates that they are closed.
11.6.11.13
Interlock, transformer bay
Test/Function status/Control/Apparatus control/InterlTransformerBay
Shows six instances of the function with 19 measurements per instance. The
measurements indicate which breakers and disconnectors are permitted to open and/
or close, the status of the disconnect devices and switch status validity. For example,
the measurement named VPQB2TR indicates with output value 1 that the switch
status of disconnector QB2 is valid.
11.6.11.14
Switch controller
Test/Function status/Control/Apparatus control/SwitchController
Displays up to 30 instances of the function (CS) with 12 measurements per instance.
Apart from position indication and the latest value of the error indication during
command, the majority of the measurements provide boolean output data indicating
the state of processes and devices.
11.6.11.15
Circuit breaker
Test/Function status/Control/Apparatus control/CircuitBreaker
Displays up to 18 instances of the function (XC) with 16 measurements per instance.
Apart from apparatus position (POSITION), truck position (TR_POS), operation
counter (CNT_VAL), latest value of error indication (L_CAUSE) and error indication
during command (CAUSE) which have integer values as outputs, the measurement
values are boolean and provide status information about processes and devices.
11.6.11.16
Circuit switch (SXSWI)
Test/Function status/Control/Apparatus control/CircuitSwitch
Displays up to 14 instances of the function with 15 measurements per instance. Apart
from apparatus position indication (POSITION), the value of the operation counter
(CNT_VAL), the latest value of the error indication during command (L_CAUSE)
and error indication during command (CAUSE) which have integer outputs, the
measurement outputs have boolean values indicating the status of processes and
devices.
11.6.11.17
Bay reserve
Test/Function status/Control/Apparatus control/BayReserve
Section 11
Test the IED
RET 670
Operator's manual
1MRK504049-UEN rev. D
67