Hitachi Relion 650 Series Technical Manual page 266

Section 12
Monitoring
• When the input signal is full level, the breaker can operate a full cycle of open-close-open
operation.
• When the input signal is medium level, the breaker can operate only a close followed by an
open operation.
• When the input signal is low level, the breaker operation is restricted to a single open operation.
• When the input signal is absent, there cannot be a possible breaker operation.
Example, consider full level binary input signal (representing stored energy in the drive) for phase L1,
medium level signal for phase L2 and low level signal for phase L3.
• Phase L1 has full level binary input signal. It implies that full spring charge is available and the
breaker can operate a complete cycle of open-close-open operation.
• For phase L2, the full level binary signal is absent and only the medium level binary input signal
is high, it implies that sufficient spring charge is unavailable for a full cycle operation. Hence the
breaker can operate only a close followed by an open operation.
• For phase L3, the spring charge is low, the breaker can operate only open operation.
In this case, the integer value of CBOPCAP3P is 131844 as defined in
Table 254
corresponding output integer values.
Table 254: Operation capability of the circuit breaker
L1
Table continues on next page
260
shows all possible combinations of circuit breaker operation for the three phases with the
Combination
L2
None
None
None
None
None
None
None
None
None
None
None
None
None Open-Close-Open
None Open-Close-Open
None Open-Close-Open
None Open-Close-Open
Open
Open
Open
Open
Open
Open
Open
Open
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L3
None
None
None
None Open-Close-Open
Open
Open
Open
Open Open-Close-Open
Close-Open
Close-Open
Close-Open
Close-Open Open-Close-Open
Open-Close-Open
None
None
None
None Open-Close-Open
Open
Open
Open
Open Open-Close-Open
1MRK 511 557-UEN Rev. A
Table 254
Integer
CBOPCAP3P
None 65793
Open 131329
Close-Open 196865
262401
None 66049
Open 131585
Close-Open 197121
262657
None 66305
Open 131841
Close-Open 197377
262913
None 66561
Open 132097
Close-Open 197633
263169
None 65794
Open 131330
Close-Open 196866
262402
None 66050
Open 131586
Close-Open 197122
262658
Technical Manual