EMERSON PR9376010-011 module

EMERSON PR9376010-011 module

Technical data of product parameters

This adjustable delay time, which is initiated at the end of the
pick-up time, is the period during which all the conditions for PR9376010-011
synchronism must be continuously fulfilled to permit closure of
the circuit-breaker. The timer is reset should one of the parameters move out of the permissible range.
Providing they all remain within their preset ranges, the enable
signal (‘PermitToClos’) is issued at the end of the measuring PR9376010-011
period.
Especially in auto-reclosure applications, it is of advantage to set
the measuring period (‘supervisTime’) in relation to the settings
for ‘Phase diff.’ and ‘maxFreqDif’. It also provides facility for
allowing for the operating time of the circuit-breakerThe minimum operating time achieved by the function, i.e. the
shortest possible time between the instant the synchronism
conditions are fulfilled for the first time and the generation of the
signal enabling the circuit-breaker to be closed (‘PermitToClos’),
is given by the sum of the measuring time setting
(‘supervisTime’) and the pick-up response time tv of the function.The function (timer, all measuring elements and the associated O/P’s) is automatically reset when busbar I/P’s are PR9376010-011
switched. This procedure takes about 60 ms (internal response times). The function then begins to evaluate the new
busbar voltage and from this instant onwards the generation
of an enable signal (‘PermitToClos’) relating to the new
system configuration is possible.These are assigned to the corresponding voltage I/P’s and used
mainly when the v.t. circuit can be interrupted by fuse-failure
equipment (miniature circuit-breakers). In such cases, the
blocking I/P’s are connected to auxiliary contacts on the fusefailure equipment. This precaution eliminates any risk of the
synchrocheck function permitting the closure of a circuit-breaker
onto a line it considers to be de-energised, which in reality is
under voltage

Product picture display

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