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12
Z X 1 . 5 - R
Plug-in cable sockets (1.7) mounted in a gas-tight
manner in the floor plate of the circuit breaker
compartment maintain the partitioning between
the insulating gas compartment and the cable
termination compartment. The connection
height for the cables is 1250 mm.
•
Solid-insulatedbusbar system: Connection of a
solid-insulated bar by sockets acc. to DIN 47637
size 3 (maximal 1250 A) or by special sockets
(maximal 2500 A)
Observe the details in the order documents.
3.6 Control and monitoring
Control and monitoring occurs by digital secondary
systems with multifunction protection and
switchbay unit or by conventional secondary
systems combined with a protection device.
(Figures 3/4, 3/7, 6/2, 6/3, 6/4, 6/5)
Sensors detect actual operating conditions. Their
information is then processed by the multifunction
protection and switchbay unit.
The following sensors are used in ZX1.5-R panels:
•
Sensors for insulating gas pressure monitoring
•
Auxiliary switch to detect the switch positions
of the circuit breaker and disconnector/
earthing switch (three position switch)
•
Sensor to detect the charging condition of the
circuit breaker stored energy spring
Arrangement of the sensors
•
Sensors for pressure monitoring
-
(B0G) for the circuit breaker compartment
On the circuit breaker base plate in the control
cabinet
-
(B1G) for the busbar compartment
Beside the operating mechanism for the
disconnector/earthing switch (three position
switch)-Q1/-Q5 in the control cabinet
•
Sensors for detection of the switch positions
-
(B0E) and (B0A) for the circuit breaker:
On its operating shaft
-
(B1E, B1A, B5E and B5A) for the disconnector/
earthing switch (three position switch): on
its operating mechanism in the control
cabinet
Sensor B0S of the charging condition of the stored
energy spring: located above the drum with the
spiral spring for the circuit breaker operating
mechanism.
3.7 Conventional secondary systems in
combination with a protection device
The conventional version of the ZX1.5-R has
microswitches on the operating mechanism base
I N S T R U C T I O N M A N U E L
plate (figure 6/2) for detection of the position of
the three position switch (2.1). These are used to
start and stop the relevant drive motor
(disconnector or earthing switch). These
microswitches are used to activate and deactivate
the relevant mechanism motor function
(disconnector or earthing switch).
5 pole sets of auxiliary switches are available
for each of the positions
•
Earthing switch ON
•
Earthing switch OFF and disconnector OFF
•
Disconnector ON
Three or four of the five contacts of the auxiliary
switch are pre-assigned for internal purposes
within the panel, such as circuit breaker interlocking
or local position indication.
As an option, the following mechanical interlock
is available between the circuit breaker (-Q0) and
the three position switch (-Q1/-Q5). With the circuit
breaker closed, the access flap (2.22) to the
actuating shaft of the three position switch is
blocked. If the circuit breaker is open, this flap can
be opened and a hand crank (6.1) inserted for
operation of the disconnector or earthing switch.
When flap (2.22) is open, electrical and mechanical
switching of the circuit breaker is prevented.
The flap (2.22) for the three position switch can
only be closed when the switch is in one of the
limit positions
•
Earthing switch ON
•
Earthing switch OFF and disconnector OFF
•
Disconnector ON
The circuit breaker is only enabled again when
flap (2.22) is closed.
3.7.1 Conventional control
The ZX1.5-R variant with a conventional control
system has the following features:
•
Mimic diagram with bar-type annunciators for
position signalling on the door of the control
cabinet
•
Push buttons for operation of the circuit breaker
(1.1) and the three position switch (2.1)
•
Drop indicator relay for signalling of breaker
tripping
•
Starting and stopping of the operating
mechanisms by microswitches in
combination with motor control relays
•
Electrical interlocks between the circuit breaker
(1.1) and the three position switch (2.1)
•
Floating contacts for position signalling for
customized applications (e.g. remote signalling
or interlocking of the opposing side)
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