ABB ZX1.5-R User manual
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—
INSTRUCTION MANUEL
ZX1.5-R
Gas-insulated medium voltage
for railway application
4ZX1.5-R INSTRUCTION MANUEL
• Make sure that the installation room (spaces,
divisions and ambient) is suitable for the
electrical apparatus
• Check that all the installation, putting into
service and maintenance operations are carried
out by qualified personnel with suitable
knowledge of the apparatus
• Make sure that the standard and legal
prescriptions are complied with during
installation, putting into service and
maintenance, so that installations according
to the rules of good working practice and safety
in the work place are constructed
• Strictly follow the information given in this
instruction manual
Dangerous
Pay special attention to thedanger notes indicated
in the manual by thefollowing symbol
• Check that the rated performance of the
apparatus is not exceeded during service
• Check that the personnel operating the
apparatus have this instruction manual to
hand as well as the necessary information
for correct intervention
• Responsible behavior safeguards your own
and others’ safety
For any requests, please contact the ABB Assistance Service.
Fundamental notes on this manual:
Read the relevant sections of this manual through
in full before performing work, so as to ensure
correct handling.
Paragraphs in this manual are marked in
accordance with their significance. The markings
mean the following:
Hazard warning, meaning in this manual
that death or serious injury and
considerable damage may occur if the
actions described are not performed.
Important note, meaning in this manual
that injury and damage may occur if the
actions described are not performed.
Attention is drawn to further documents.
Note on safety
This internal arc classification to IEC 62271-200
confirms a tested degree of operator protection.
The information on accessibility of the switchgear
as required by IEC 62271-200 can be found on
the type plates of the panels.
The coding is as follows:
A: Switchgear installed in closed rooms with
access restricted to authorised personnel
F: Accessibility from the front (F = Front)
L: Accessibility from the sides (L = Lateral)
R: Accessibility from the rear (R = Rear)
Instructions to be stipulated by the
operator of the switchgear must prevent
access by personnel to non-arc
classified areas.
The switchgear is not safe for personnel
under the terms of IEC 6227-200 when
• the covers on the cable termination
compartment are not properly fitted, or
• the switchgear is operated without end covers
Operator protection in accordance with IEC
62271-200 presupposes that the distances we
prescribe between the switchgear and the
walls and ceiling of the switchgear room.
—
For your safety!
5SUMMARY
1.1 General
Fundamental features of the panels
• Rated voltage up to 27.5 kV
• Single or two line metal-clad
• Gas insulated
• Sealed pressure system for busbar compartment
• Sealed pressure system for circuit breaker com
partment
• Sensor technology and conventional instrument
transformers for adaptive measuring
• Indoor installation
• Factory assembled
• Type tested
• Routine tested
Basic panel variants
• Incoming and outgoing feeders
• Bus sectionalisers/bus riser panels
• Cable side earthing
Panel equipment, variants
• Vacuum circuit breaker
• Disconnector/earthing switch (three-position
switch) with functions of
- Busbar connection
- Disconnection
- Earthing
Details on the technical design and equipment of
a switchgear, such as
• Technical data
• Detailed list of equipment fitted
• Detailed circuit diagrams, etc
are stated in the order documents.
In addition tothis instruction manual, the following
instruction manuals must be observed:
• Insulating gas system
• Circuit breaker VD4 X-R
1.2 Standards and specifications
1.2.1 Switchgear production standards and
specifications
The ZX1.5-R product comply with the following
standards:
• Add GB/T 28428
1.2.2 Installation and operation
The relevant standards are to be observed during
installation and operation, in particular:
• Power installations exceeding AC 1kV,DIN VDE
0101
• Operation of electrical installations VDE 0105
• Earthing systems for special power
installations with rated voltages above 1 kV,
DIN VDE 0141
• The accident prevention regulations issued by
the appropriate professional bodies
• The safety guidelines for production materials
• The order-related details provided by the
switchgear manufacturer
1.3 Operating conditions
1.3.1 Designed in accordance with DL/T 404,
GB/T 11022, IEC 62271-1, IEC 60628 with
the following limit values:
Ambient temperature
• Maximum +40°C
• Maximum 24 hour average +35°C
• Minimum -15°C
• Site altitude
- ≤1000 m above sea level
• Ambient air
The ambient air is not to be significantly
contaminated by dust, smoke, corrosive or
flammable gases, or salt.
1.3.2 Special operating conditions
Special operating conditions are to be agreed by
the manufacturer and operator. The manufacturer
is to be consulted in advance about each special
operating condition:
• Site altitude above 1000 m
- The manufacturer's specifications are to be
observed
• Increased ambient temperature
- The current carrying capacity is reduced
- Additional cooling facilities for heat dissipation
are to be provided
• Climate
- In areas with high humidity or major rapid
temperature changes, condensation inside
the low voltage compartment needs to be
prevented (e.g. by installing electric heaters
in that compartment)
—
1 Summary
6ZX1.5-R INSTRUCTION MANUEL
2 Technical data
—
2.1 Panel type ZX1.5-R
1) Other values on request basic on insulation situation.
2) Rated frequency 60 Hz on request.
3) Other operating sequence on request.
4) Insulating gas: Sulphur hexafluoride SF6.
5) 100 kPa=1 bar.
6) Other voltage on request.
Electrical Data
Rated voltage
Rated power frequency withstand voltage
Rated lightning impulse withstand voltage
Minimum operating pressure, 20℃
Rated frequency 2)
Main busbar rated current
Tee-off rated current
Rated peak withstand current
Rated short-time withstand current, 4 s
Rated short-circuit breaking current for CB
Rated short-circuit making current for CB
Rated operating sequence
Total opening time
Closing time
Insulating gas system
Insulating gas
Minimum functional level for insulation (Pme)
Alarm level for insulation (Pae)
Rated filling level for insulation (Pre)
Motor and release data
Charging motor
Closing coil
Opening coil
Rated supply voltage
DC
Degree of protection (IEC 60529, DIN VDE 0470-1)
High voltage live part
Control cabinet
Ambient temperature
Maximum temperature
Maximum temperature of 24-hours-mean
Minimum value
Opearting Altitude
Dimensions
Height (for transport)
Depth 9) 10) 11)
Width
Height of cable fixing
line to earth
line to line
line to earth
line to line
Absolute
kV
kV
kV
kV
kV
kPa
Hz
A
A
kA
kA
kA
kA
ms
ms
kPa 5)
kPa
kPa
W
W
W
V
℃
℃
℃
m
mm
mm
mm
mm
27.5/2x27.5
95
140
200
325
1201)
50
...2500
...2500
...80
...31.5
...31.5
...80
O-0.3-CO-3 min-CO 3)
30-45
55-70
SF6
4)
120 1)
120
130
240
250
250
110, 220 6)
IP65
IP4X 7)
+40
+35
-15
...1000 8)
2100
960...1800
500/800
1250
7) Other specification on request.
8) Higher altitude for erection on request.
9) Dependent on the number of cables per line.
10) As an option, with conventional control systems, the panel
depth can be extended by 100 mm.
11) Low voltage compartment depth 400 mm.
7TECHNICAL DATA
2.2 Busbar compartment with disconnector/earthing switch(three-position switch) type UX2TE-R
Electrical data
Rated voltage
Rated power frequency withstand
voltage
Rated lightning impulse withstand
voltage
Rated current
Rated peak withstand current
Rated short time current, 4 s
Motor data
Motor power, max. 1)
Motor running times, max. 1):
• Centre position to busbar
• Centre position to earth
Rated supply voltage
DC 2)
line to earth
line to line
Across the isolating distance
line to earth
line to line
Across the isolating distance
kV
kV
kV
A
kA
kA
W
s
s
V
27.5/2x27.5
95
140
118
200
325
220
...2500
80
31.5
180
18
18
60, 110, 220
1) At rated supply voltage.
2) Other voltages on request.
8ZX1.5-R INSTRUCTION MANUEL
2.3 Dimensions and weights
—
Figure 2/1: Dimensions
a) Feeder panel: up to 2 cable per line, rated current ≤ 1250 A
b) Feed panel with Busbar metring PT or SA:
I cable per line, rated current ≤ 800A
A Circuit breaker compartment
B Busbar compartment
C Cable termination compartment partitioned
D Control cabinet
E Pressure relief duct, above
F Pressure relief duct for busbar compartment
G Pressure relief duct with absorber
I Pressure relief chimney, lateral
E Pressure relief duct, above
F Pressure relief duct for busbar compartment
G Pressure relief duct with absorber
A Circuit breaker compartment
B Busbar compartment
C Cable termination compartment partitioned
D Control cabinet
Incoming feeder panel up to 4 cables per line
—
Figure 2/2: Dimensions
Figure shows panels with rated currents ≥1250 A
ZX1.5-R
ZX1.5-R
View X View Y
R-5.1XZR-5.1XZ
ViewY
9TECHNICAL DATA
Panel weights
800-1250 A versions : from approx. 550 kg up to
approx. 1000 kg
...2500 A versions : up to 1650 kg
Weights depend on version, design, and equipment
2.4 Internal arc classification
Internal arc classification (AFLR)
Panel width
500/800 mm
31.5 kA, 1 s
31.5 kA, 1 s
Circuit breaker/busbar compartment
Cable compartment
•When plasma diverters are used (standard),
thearc gases are conducted to the rear
-Panel by panel for the circuit-breaker
compartment, and
-Centrally via a pressure relief duct (F), (see
page 9 ), from the busbar compartments to a
metering panel or sectionalizerpanel. If the
installation does not contain a metering panel
or sectionalizer panel, anoutgoing feeder
panel can be used for pressure relief
•The panels can have optionally integrated
pressure relief ducts with the opportunity for
-Conducting out of the switchroom in a manner
suitable for the building dimensions, or
- Conducting through an absorber on the last
two panels (when the ceiling height is
sufficient)
•In the case of an arc fault, an increase of
pressure in the switchroom is to be expected.
This is to be taken into account in the planning.
Calculations can be supplied on request
3 Design and function of the switchgear
system and its equipment
—
10 ZX1.5-R INSTRUCTION MANUEL
3.1 Design and equipment of the panels
(Figures 3/1 to 3/11)
The core modules of the metal-clad panels of type
ZX1.5-R with separately gas-filled circuit breaker
and busbar compartments are manufactured in a
laser cutting and auto robot welding process.
The stainless steel encapsulation and the insulating
gas protect all live parts in the high voltage area
permanently from soiling, humidity, foreign bodies
and other injurious influences.
ZX1.5-R panel content with electrical department
standard DL/T 404, national standard GB/T 11022
and IEC 62271-1.
The modular structure provides the conditions
necessary for all panel variants normally required
in a relatively simple manner.
For example
• Feeder panel
• Busbar sectionalizer panel
• Busbar Voltage transformer & Surge arrestor
panel
• Pressure relief
There are facilities for pressure relief either panel
by panel or via pressure relief ducts
Should the unlikely event of an internal arc fault
occur, the relevant pressure relief disk opens.
• Circuit breaker compartment (1.0)
Pressure relief is effected via a pressure relief
disk 1.3 fitted at the top
- Standard: discharge into a pressure relief
duct (1.9) and from there via an absorber
(1.10) into the switchroom or without an
absorber for direct relief to the outside
- Optional: relief to the rear by means of a
plasma deverter (1.15) (panel by panel
pressure relief)
• Busbar compartment (2.0)
Pressure relief is effected via a pressure relief
disk (2.11) fitted at the bottom into the pressure
relief duct (3.6)
- In systems with pressure relief ducts at the
top (standard), the plasma gases are
discharged through the lower pressure
relief duct (3.6) to the side pressure relief
chimney (I) (refer to page 9) and into the
upper pressure relief duct (1.9)
- Optionally, in systems with pressure relief
to the rear, discharge is effected centrally
via the pressure relief duct (3.6) into a
sectionalizer panel/busbar riser panel or
metering panel. There, flap 3.15 opens
• Cable termination compartment (3.0)
- In systems with rear covers and cell
partitioning at the sides, internal arcing in
the cable termination compartment causes
a flap (3.5) leading to the lower pressure
relief duct (3.6) to open. From there, the
gases are channelled through the side
pressure relief chimney into the upper duct
(1.9) (standard)
- In systems without covers and cell partitioning,
the plasma gases escape into the space
behind the switchgear
• Each panel is a self-contained unit whose
busbars (2.4) are connected to the busbars in
the adjacent panels by plug-in busbar
connectors (2.5)
• Circuit breaker VD4 X-R
• Three position switch UX2TE-R
• Circuit breaker compartment (1.0)
- With or without current transformers
- With or without combination sensors
• Busbar compartment (2.0)
• Cable termination compartment (3.0)
- Without current transformers
- With conventional ring core current transformers
(customized)
- With current sensors (Only possible with one
cable per line. The sensors must be installed
before the plugs are fitted.)
• Control cabinet, optionally equipped with
- Multifunction Protection and Switchbay Control
Unit REO 517
- Mechanical auxiliary switches in conjunction
with protection relays
• Cable sockets
• Different connection methods, such as multiple
cables, and fully insulated bars
• Isolatable sockets for plug-in voltage
transformers (optional)
Insulation test standard
Up to 27.5 kV series, content with insulation test
requirement when the pressure is 120 kPa
(absolutely, 20℃)
3.2 Gas system in the panels/switchgear
(Figures 3/7 to 3/11)
A permanently protected climate for the entire
live primary area is ensured by the gas-tight
encapsulation of the panels and their filling
with dry insulating gas.
• The circuit breaker compartment (1.0) and
the busbar compartment (2.0) in each panel
are separate gas compartments with their own
filling connectors. The gas compartments in
the individual panels set up side by side are
not connected together
• Details on the gas system and gas servicing
of the ZX1.5-R switchgear can be found in
instruction manual HB605/10 Use of SF6
insulating gas in ZX Switchgear Insulating
gas system for ZX switchgear
• The gas compartments contain drying agent
bags
3.2.1 Monitoring of operating pressure
• The rated filling level for insulation in the
individual compartments is monitored by
density sensors
- Density sensor (1.8) for the circuit breaker
compartment
- Density sensor (2.3) for the busbar
compartment
• Should the pressure in a gas compartment fall
below the alarm level for insulation of that
compartment, this is detected by the switch
bay control unit and displayed on the alarm
side (message text and LEDs)
• As an alternative, in versions without switch bay
control unit if pressure drop below the alarm
level for insulation is displayed selectively by
signal lamps
3.2.2 Limitation of the effects of an internal
arc fault
In the unlikely event of an internal arc fault, a
contact in the gas density sensor opens a loop
circuit which runs through all the panels in a busbar
section. On detection of overcurrent at the same
time, the switch bay control unit opens the
corresponding circuit breaker.
Observe the details in the order documents.
3.3 Vacuum circuit breakers, type VD4 X-R
(Figures 3/3, 3/7, 6/3 and separate manual
1YHA000118)
The circuit breaker poles are installed horizontally
in the circuit breaker compartment (1.0). The circuit
breaker operating mechanism (1.2) is located
outside the gas compartment and is therefore
easily accessible. It is connected to the breaker
poles by a gas-tight bushing.
Functions of the vacuum circuit breaker (1.1)
• Opening and closing on rated currents
• Short-circuit breaking operations
• Earthing function in conjunction with
three-position switch (2.1)
The earthing function of the three-position switch
prepares de-energized for the connection to earth.
Earthing itself is performed by the circuit breaker.
This integration of functions is advantageous, as
a circuit breaker is of higher quality in the earthing
function than any other earthing switch.
3.4 Disconnector/earthing switch, type UX2TE-R
(Three-position switch) (Figures 3/7, 6/2,
6/4)
The ZX1.5-R panels are fitted with specially
designed three-position disconnectors and
earthing switches (2.1) (-Q1/-Q5). These switches
are motor-operated rod-type switches whose live
switching components are located in busbar
compartment (2.0) (insulating gas compartment),
while the operating mechanism block is easily
accessible from the control cabinet (4.0).
The operating mechanism block consists of the
following functional groups:
• The drive motor
• Position indicators with integrated LEDs for
position indication or the combination
microswitches and auxiliary contacts
• Mechanical position indicators
• Emergency manual operating drive
• Optional: mechanical interlocking for emergency
manual operation
The three-position switch performs the
functions of:
• Connecting
• Disconnecting and
• Earthing
The three switch positions are unequivocally
specified by the operating mechanism. The switch
has its disconnecting position at the centre. In the
limit positions, disconnector ON and earthing
switch ON, the moving contact (sliding part)
driven by an insulating spindle, reaches the
isolating contacts, which are fitted with one or
two contact rings respectively.
3.5 High voltage connections
(Figures 3/2, 3/7, 5/8, 6/6)
• Cable plug connector systems
High voltage plastic insulated cable with internal
cone cable plug connector system and sockets
to EN 50181
Plug systems: size 3.
11DESIGN AND FUNCTION OF THE SWITCHGEAR SYSTEM AND ITS EQUIPMENT
3.1 Design and equipment of the panels
(Figures 3/1 to 3/11)
The core modules of the metal-clad panels of type
ZX1.5-R with separately gas-filled circuit breaker
and busbar compartments are manufactured in a
laser cutting and auto robot welding process.
The stainless steel encapsulation and the insulating
gas protect all live parts in the high voltage area
permanently from soiling, humidity, foreign bodies
and other injurious influences.
ZX1.5-R panel content with electrical department
standard DL/T 404, national standard GB/T 11022
and IEC 62271-1.
The modular structure provides the conditions
necessary for all panel variants normally required
in a relatively simple manner.
For example
• Feeder panel
• Busbar sectionalizer panel
• Busbar Voltage transformer & Surge arrestor
panel
• Pressure relief
There are facilities for pressure relief either panel
by panel or via pressure relief ducts
Should the unlikely event of an internal arc fault
occur, the relevant pressure relief disk opens.
• Circuit breaker compartment (1.0)
Pressure relief is effected via a pressure relief
disk 1.3 fitted at the top
- Standard: discharge into a pressure relief
duct (1.9) and from there via an absorber
(1.10) into the switchroom or without an
absorber for direct relief to the outside
- Optional: relief to the rear by means of a
plasma deverter (1.15) (panel by panel
pressure relief)
• Busbar compartment (2.0)
Pressure relief is effected via a pressure relief
disk (2.11) fitted at the bottom into the pressure
relief duct (3.6)
- In systems with pressure relief ducts at the
top (standard), the plasma gases are
discharged through the lower pressure
relief duct (3.6) to the side pressure relief
chimney (I) (refer to page 9) and into the
upper pressure relief duct (1.9)
- Optionally, in systems with pressure relief
to the rear, discharge is effected centrally
via the pressure relief duct (3.6) into a
sectionalizer panel/busbar riser panel or
metering panel. There, flap 3.15 opens
• Cable termination compartment (3.0)
- In systems with rear covers and cell
partitioning at the sides, internal arcing in
the cable termination compartment causes
a flap (3.5) leading to the lower pressure
relief duct (3.6) to open. From there, the
gases are channelled through the side
pressure relief chimney into the upper duct
(1.9) (standard)
- In systems without covers and cell partitioning,
the plasma gases escape into the space
behind the switchgear
• Each panel is a self-contained unit whose
busbars (2.4) are connected to the busbars in
the adjacent panels by plug-in busbar
connectors (2.5)
• Circuit breaker VD4 X-R
• Three position switch UX2TE-R
• Circuit breaker compartment (1.0)
- With or without current transformers
- With or without combination sensors
• Busbar compartment (2.0)
• Cable termination compartment (3.0)
- Without current transformers
- With conventional ring core current transformers
(customized)
- With current sensors (Only possible with one
cable per line. The sensors must be installed
before the plugs are fitted.)
• Control cabinet, optionally equipped with
- Multifunction Protection and Switchbay Control
Unit REO 517
- Mechanical auxiliary switches in conjunction
with protection relays
• Cable sockets
• Different connection methods, such as multiple
cables, and fully insulated bars
• Isolatable sockets for plug-in voltage
transformers (optional)
Insulation test standard
Up to 27.5 kV series, content with insulation test
requirement when the pressure is 120 kPa
(absolutely, 20℃)
3.2 Gas system in the panels/switchgear
(Figures 3/7 to 3/11)
A permanently protected climate for the entire
live primary area is ensured by the gas-tight
encapsulation of the panels and their filling
with dry insulating gas.
• The circuit breaker compartment (1.0) and
the busbar compartment (2.0) in each panel
are separate gas compartments with their own
filling connectors. The gas compartments in
the individual panels set up side by side are
not connected together
• Details on the gas system and gas servicing
of the ZX1.5-R switchgear can be found in
instruction manual HB605/10 Use of SF6
insulating gas in ZX Switchgear Insulating
gas system for ZX switchgear
• The gas compartments contain drying agent
bags
3.2.1 Monitoring of operating pressure
• The rated filling level for insulation in the
individual compartments is monitored by
density sensors
- Density sensor (1.8) for the circuit breaker
compartment
- Density sensor (2.3) for the busbar
compartment
• Should the pressure in a gas compartment fall
below the alarm level for insulation of that
compartment, this is detected by the switch
bay control unit and displayed on the alarm
side (message text and LEDs)
• As an alternative, in versions without switch bay
control unit if pressure drop below the alarm
level for insulation is displayed selectively by
signal lamps
3.2.2 Limitation of the effects of an internal
arc fault
In the unlikely event of an internal arc fault, a
contact in the gas density sensor opens a loop
circuit which runs through all the panels in a busbar
section. On detection of overcurrent at the same
time, the switch bay control unit opens the
corresponding circuit breaker.
Observe the details in the order documents.
3.3 Vacuum circuit breakers, type VD4 X-R
(Figures 3/3, 3/7, 6/3 and separate manual
1YHA000118)
The circuit breaker poles are installed horizontally
in the circuit breaker compartment (1.0). The circuit
breaker operating mechanism (1.2) is located
outside the gas compartment and is therefore
easily accessible. It is connected to the breaker
poles by a gas-tight bushing.
Functions of the vacuum circuit breaker (1.1)
• Opening and closing on rated currents
• Short-circuit breaking operations
• Earthing function in conjunction with
three-position switch (2.1)
The earthing function of the three-position switch
prepares de-energized for the connection to earth.
Earthing itself is performed by the circuit breaker.
This integration of functions is advantageous, as
a circuit breaker is of higher quality in the earthing
function than any other earthing switch.
3.4 Disconnector/earthing switch, type UX2TE-R
(Three-position switch) (Figures 3/7, 6/2,
6/4)
The ZX1.5-R panels are fitted with specially
designed three-position disconnectors and
earthing switches (2.1) (-Q1/-Q5). These switches
are motor-operated rod-type switches whose live
switching components are located in busbar
compartment (2.0) (insulating gas compartment),
while the operating mechanism block is easily
accessible from the control cabinet (4.0).
The operating mechanism block consists of the
following functional groups:
• The drive motor
• Position indicators with integrated LEDs for
position indication or the combination
microswitches and auxiliary contacts
• Mechanical position indicators
• Emergency manual operating drive
• Optional: mechanical interlocking for emergency
manual operation
The three-position switch performs the
functions of:
• Connecting
• Disconnecting and
• Earthing
The three switch positions are unequivocally
specified by the operating mechanism. The switch
has its disconnecting position at the centre. In the
limit positions, disconnector ON and earthing
switch ON, the moving contact (sliding part)
driven by an insulating spindle, reaches the
isolating contacts, which are fitted with one or
two contact rings respectively.
3.5 High voltage connections
(Figures 3/2, 3/7, 5/8, 6/6)
• Cable plug connector systems
High voltage plastic insulated cable with internal
cone cable plug connector system and sockets
to EN 50181
Plug systems: size 3.
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
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)
12 ZX1.5-R INSTRUCTION MANUEL
3.8 Protection against maloperation / interlock
dependencies (Figures 6/2, 6/5 and 7/1)
3.8.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
• Protection against maloperation can be
implemented by the multifunction protection
and switchbay control unit REO 517
The circuit-breaker and three position switch can
be controlled directly at the panel and/or remotely,
for instance from the control room. Operation at
the panel is by selection on the REO 517 or
conventionally with push buttons and bar-type
annunciators in the mimic diagram.
• Three position switch UX2TE-R and the
corresponding circuit- breaker type VD4 X-R are
electrically interlocked
- In the case of manual operation of the three
position switch, a mechanical interlock can
become effective (optional)
• Details of further interlocks/dependencies, e.g.
with neighbouring systems, can be found in the
relevant order documents for the system
concerned
• The interlock polling (electrical only) between
panels, where implemented, is effected by loop
lines from panel to panel
Operation on failure of auxiliary power:
On failure of the auxiliary power, the devices can
be operated manually.
The details for the specific system are also to be
observed.
Where no mechanical interlock or optional interlock
is fitted, intervention in the interlock concept is
possible by opening the control cabinet door.
Emergency manual operation is possible by means
of a hand crank and mechanical push button.
Note
Perform all switching operations fully until the
defined limit position is reached!
• Switch off the mcbs for the circuit breaker
release circuit and operating mechanism of
the three position switch
3.8.2 Function of the interlock between the circuit
breaker and the three-position switch
3.8.2.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
Note
If the operating mechanism for the three position
switch fail during a switching operation, when
the switch is in an intermediate position, the
electrical interlock between the VD4 X-R circuit-
breaker and the UX2TE-R three position switch
established by the REO 517 is effective. The VD4
X-R circuitbreaker could however be closed
mechanically when the low voltage compartment
door is open.
3.8.2.2 Mechanical interlock (optional)
In addition to the electrical interlock, a mechanical
interlock can be established between the circuit
breaker and the three position switch in a panel.
The interpanel interlock between the circuit
breaker and the three position switches in the
sectionaliser and riser panels is effected in the
riser panel by means of a blocking magnet.
Closing of the circuit breaker is prevented by the
blocking magnet on failure of auxiliary voltage
and when the three position switch is in an
intermediate position. Mechanical opening of
the circuit breaker is always possible when the
low voltage compartment door is open.
Access to the manual operating shaft of the three
position switch is blocked by a flap when the
circuit breaker is closed.
The mechanical interlock is effective even on
failure of auxiliary voltage.
3.9 Earthing a tee-off
3.9.1 Electrical operation using the multifunction
protection and bay control unit REO 517 or
the buttons on the panel front
Operating sequence for tee-off earthing:
• Circuit breaker (-Q0) OFF
• Disconnector (-Q1) OFF
• Earthing switch (-Q5) ON
• Test for off-circuit condition
• Circuit breaker (-Q0) ON
• Secure panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
and for the operating mechanism of the
three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing:
• Open the control cabinet door and switch on
the mcb release the OFF button for the circuit
breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q5) OFF
13DESIGN AND FUNCTION OF THE SWITCHGEAR SYSTEM AND ITS EQUIPMENT
3.9.2 Manual earthing
Follow the same sequence as for electrical
operation, but using the manual push buttons
for the circuit breaker and the crank to operate
the three position switch.
When an additional mechanical interlock between
the circuit breaker and the earthing switch is fitted,
the following actions are necessary:
• Open the control cabinet door
• Switch off the circuit breaker (-Q0) by operating
the mechanical push button
• Open flap (2.22) on the three position switch
operating mechanism (see Interlocks, section
3.8.2b)
Note
Flap (2.22) can only be opened when the circuit
breaker is OFF.
Do not use excessive force!
• Switch off the disconnector (-Q1) with the
hand crank
• Switch on the earthing switch (-Q5) manually
using the hand crank (6.1). (Note: Observe
"Emergency manual operation" in section 6.2.2).
about 24 turns clockwise. Close flap (2.22) again
Note
When flap (2.22) is open, the circuit breaker is
blocked in the OFF position.
• Test for the off-circuit condition (capacitive
voltage indicator system, see section 6.4.1)
• Switch the circuit breaker (-Q0) on using the
mechanical ON push button
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing manually:
• Open the control cabinet door and switch on the
mcb Release the OFF button for the circuit
breaker if necessary
• Switch circuit breaker (-Q0) OFF with the
mechanical push button
• Open flap (2.22)
• Switch earthing switch (-Q5) OFF manually
• Close flap (2.22)
3.10 Earthing the busbar
The procedure for earthing the busbar or a busbar
section is dependent on the configuration of
thesystem. Systems with sectionalizers/risers
permit earthing ofa busbar section without
additional equipment.
3.10.1 Electrical earthing of a busbar section
using the sectionalizer/riser
Operating sequence:
• Circuit breaker in the sectionalizer panel OFF
• All disconnectors in the busbar section to be
earthed OFF, apart from the disconnector (-Q11
or -Q12) between the busbar section to be
earthed and the sectionalizer breaker
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating mechanism
of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit breaker
if necessary
• Label the panel to indicate that earthing has
been effected
The busbar section is then earthed. All the panels
in the section concerned are to be secured to
prevent switching operations, e.g. by tripping
the mcbs.
Cancelling the busbar earthing:
• Open the control cabinet door in the sectionalizer
and switch on the mcb release the OFF button
for the circuit breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q51 or -Q52) OFF
3.10.2 Manual earthing of a busbar section
using the sectionalizer/riser
Perform the switching operations as described
in sections 3.9.2 and 3.10.1 accordingly.
3.10.3 Maintenance earthing of a busbar using
the test sockets in a tee-off
Condition:
• The tee-off is earthed (see section 3.9)
• All disconnectors in the busbar to be earthed
are OFF
Operating sequence:
• Fit a short-circuiting bridge to the test
sockets for the earthed tee-off and connect
to main earthing bar (3.1)
• Circuit breaker OFF
• Earthing switch OFF
• Disconnector ON
• Circuit breaker ON
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
OFF button for the circuit breaker if necessary
• Label the busbar to indicate that earthing
has been effected
The busbar is then earthed. All the panels affected
are to be secured to prevent switching operations,
e.g. by tripping the mcb.
Cancelling the busbar earthing:
• Open the control cabinet door for the outgoing
feeder and switch the mcb on, if necessary
releasing the OFF switch for the circuit breaker
• Circuit breaker (-Q0) OFF
• Disconnector OFF
Cancelling the tee-off earthing:
• Earthing switch ON
• Circuit breaker ON
• Remove the short-circuiting bridge from the test
sockets and seal the sockets with blanking plugs
• Circuit breaker OFF
• Earthing switch OFF
3.11 Test facilities
The panels are properly filled with insulating
gas at the works and tested to the VDE or IEC
standards.
Should there be any need to perform tests, the
tests are to be performed as follows:
• For voltage and current tests, direct access to
the conductors in the connection area is possible
without releasing the cable connection. Access
is effected via the test sockets (1.4)
Surge arresters must be removed during voltage
tests. The empty sockets must be closed with
insulating blanking plugs during testing!
Voltage transformers must be isolated from
the test circuit prior to testing.
• Voltage tests:
- Close and insulate free cable sockets with
blanking plugs!
See section 6.4 for further details and the
applicable test voltages.
- Perform cable tests with DC voltage or with
very low frequency (VLF) cosine or square
wave voltage
- Cable fault locations measurement with
impulse voltage and
- Switchgear tests (without cables) with AC
voltage can be performed with a test plug as
shown in figure 6/6 or a test cable
• A test plug for current tests as shown in figure
(6/7) can be used to test the protection devices
by primary current injection (see also the note
in section 6.4.4). This configuration is short-
circuit proof and can also be used as an
additional maintenance earth
The possible testing processes are described in
the following sections:
• Testing for the off-circuit
condition: Section 6.4.1
• Testing for the in-line
condition: Section 6.4.2
• High voltage tests: Section 6.4.3
• Maintenance earthing: Section 6.4.4.
3.8 Protection against maloperation / interlock
dependencies (Figures 6/2, 6/5 and 7/1)
3.8.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
• Protection against maloperation can be
implemented by the multifunction protection
and switchbay control unit REO 517
The circuit-breaker and three position switch can
be controlled directly at the panel and/or remotely,
for instance from the control room. Operation at
the panel is by selection on the REO 517 or
conventionally with push buttons and bar-type
annunciators in the mimic diagram.
• Three position switch UX2TE-R and the
corresponding circuit- breaker type VD4 X-R are
electrically interlocked
- In the case of manual operation of the three
position switch, a mechanical interlock can
become effective (optional)
• Details of further interlocks/dependencies, e.g.
with neighbouring systems, can be found in the
relevant order documents for the system
concerned
• The interlock polling (electrical only) between
panels, where implemented, is effected by loop
lines from panel to panel
Operation on failure of auxiliary power:
On failure of the auxiliary power, the devices can
be operated manually.
The details for the specific system are also to be
observed.
Where no mechanical interlock or optional interlock
is fitted, intervention in the interlock concept is
possible by opening the control cabinet door.
Emergency manual operation is possible by means
of a hand crank and mechanical push button.
Note
Perform all switching operations fully until the
defined limit position is reached!
• Switch off the mcbs for the circuit breaker
release circuit and operating mechanism of
the three position switch
3.8.2 Function of the interlock between the circuit
breaker and the three-position switch
3.8.2.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
Note
If the operating mechanism for the three position
switch fail during a switching operation, when
the switch is in an intermediate position, the
electrical interlock between the VD4 X-R circuit-
breaker and the UX2TE-R three position switch
established by the REO 517 is effective. The VD4
X-R circuitbreaker could however be closed
mechanically when the low voltage compartment
door is open.
3.8.2.2 Mechanical interlock (optional)
In addition to the electrical interlock, a mechanical
interlock can be established between the circuit
breaker and the three position switch in a panel.
The interpanel interlock between the circuit
breaker and the three position switches in the
sectionaliser and riser panels is effected in the
riser panel by means of a blocking magnet.
Closing of the circuit breaker is prevented by the
blocking magnet on failure of auxiliary voltage
and when the three position switch is in an
intermediate position. Mechanical opening of
the circuit breaker is always possible when the
low voltage compartment door is open.
Access to the manual operating shaft of the three
position switch is blocked by a flap when the
circuit breaker is closed.
The mechanical interlock is effective even on
failure of auxiliary voltage.
3.9 Earthing a tee-off
3.9.1 Electrical operation using the multifunction
protection and bay control unit REO 517 or
the buttons on the panel front
Operating sequence for tee-off earthing:
• Circuit breaker (-Q0) OFF
• Disconnector (-Q1) OFF
• Earthing switch (-Q5) ON
• Test for off-circuit condition
• Circuit breaker (-Q0) ON
• Secure panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
and for the operating mechanism of the
three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing:
• Open the control cabinet door and switch on
the mcb release the OFF button for the circuit
breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q5) OFF
14 ZX1.5-R INSTRUCTION MANUEL
3.9.2 Manual earthing
Follow the same sequence as for electrical
operation, but using the manual push buttons
for the circuit breaker and the crank to operate
the three position switch.
When an additional mechanical interlock between
the circuit breaker and the earthing switch is fitted,
the following actions are necessary:
• Open the control cabinet door
• Switch off the circuit breaker (-Q0) by operating
the mechanical push button
• Open flap (2.22) on the three position switch
operating mechanism (see Interlocks, section
3.8.2b)
Note
Flap (2.22) can only be opened when the circuit
breaker is OFF.
Do not use excessive force!
• Switch off the disconnector (-Q1) with the
hand crank
• Switch on the earthing switch (-Q5) manually
using the hand crank (6.1). (Note: Observe
"Emergency manual operation" in section 6.2.2).
about 24 turns clockwise. Close flap (2.22) again
Note
When flap (2.22) is open, the circuit breaker is
blocked in the OFF position.
• Test for the off-circuit condition (capacitive
voltage indicator system, see section 6.4.1)
• Switch the circuit breaker (-Q0) on using the
mechanical ON push button
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing manually:
• Open the control cabinet door and switch on the
mcb Release the OFF button for the circuit
breaker if necessary
• Switch circuit breaker (-Q0) OFF with the
mechanical push button
• Open flap (2.22)
• Switch earthing switch (-Q5) OFF manually
• Close flap (2.22)
3.10 Earthing the busbar
The procedure for earthing the busbar or a busbar
section is dependent on the configuration of
thesystem. Systems with sectionalizers/risers
permit earthing ofa busbar section without
additional equipment.
3.10.1 Electrical earthing of a busbar section
using the sectionalizer/riser
Operating sequence:
• Circuit breaker in the sectionalizer panel OFF
• All disconnectors in the busbar section to be
earthed OFF, apart from the disconnector (-Q11
or -Q12) between the busbar section to be
earthed and the sectionalizer breaker
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating mechanism
of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit breaker
if necessary
• Label the panel to indicate that earthing has
been effected
The busbar section is then earthed. All the panels
in the section concerned are to be secured to
prevent switching operations, e.g. by tripping
the mcbs.
Cancelling the busbar earthing:
• Open the control cabinet door in the sectionalizer
and switch on the mcb release the OFF button
for the circuit breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q51 or -Q52) OFF
3.10.2 Manual earthing of a busbar section
using the sectionalizer/riser
Perform the switching operations as described
in sections 3.9.2 and 3.10.1 accordingly.
3.10.3 Maintenance earthing of a busbar using
the test sockets in a tee-off
Condition:
• The tee-off is earthed (see section 3.9)
• All disconnectors in the busbar to be earthed
are OFF
Operating sequence:
• Fit a short-circuiting bridge to the test
sockets for the earthed tee-off and connect
to main earthing bar (3.1)
• Circuit breaker OFF
• Earthing switch OFF
• Disconnector ON
• Circuit breaker ON
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
OFF button for the circuit breaker if necessary
• Label the busbar to indicate that earthing
has been effected
The busbar is then earthed. All the panels affected
are to be secured to prevent switching operations,
e.g. by tripping the mcb.
Cancelling the busbar earthing:
• Open the control cabinet door for the outgoing
feeder and switch the mcb on, if necessary
releasing the OFF switch for the circuit breaker
• Circuit breaker (-Q0) OFF
• Disconnector OFF
Cancelling the tee-off earthing:
• Earthing switch ON
• Circuit breaker ON
• Remove the short-circuiting bridge from the test
sockets and seal the sockets with blanking plugs
• Circuit breaker OFF
• Earthing switch OFF
3.11 Test facilities
The panels are properly filled with insulating
gas at the works and tested to the VDE or IEC
standards.
Should there be any need to perform tests, the
tests are to be performed as follows:
• For voltage and current tests, direct access to
the conductors in the connection area is possible
without releasing the cable connection. Access
is effected via the test sockets (1.4)
Surge arresters must be removed during voltage
tests. The empty sockets must be closed with
insulating blanking plugs during testing!
Voltage transformers must be isolated from
the test circuit prior to testing.
• Voltage tests:
- Close and insulate free cable sockets with
blanking plugs!
See section 6.4 for further details and the
applicable test voltages.
- Perform cable tests with DC voltage or with
very low frequency (VLF) cosine or square
wave voltage
- Cable fault locations measurement with
impulse voltage and
- Switchgear tests (without cables) with AC
voltage can be performed with a test plug as
shown in figure 6/6 or a test cable
• A test plug for current tests as shown in figure
(6/7) can be used to test the protection devices
by primary current injection (see also the note
in section 6.4.4). This configuration is short-
circuit proof and can also be used as an
additional maintenance earth
The possible testing processes are described in
the following sections:
• Testing for the off-circuit
condition: Section 6.4.1
• Testing for the in-line
condition: Section 6.4.2
• High voltage tests: Section 6.4.3
• Maintenance earthing: Section 6.4.4.
3.8 Protection against maloperation / interlock
dependencies (Figures 6/2, 6/5 and 7/1)
3.8.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
• Protection against maloperation can be
implemented by the multifunction protection
and switchbay control unit REO 517
The circuit-breaker and three position switch can
be controlled directly at the panel and/or remotely,
for instance from the control room. Operation at
the panel is by selection on the REO 517 or
conventionally with push buttons and bar-type
annunciators in the mimic diagram.
• Three position switch UX2TE-R and the
corresponding circuit- breaker type VD4 X-R are
electrically interlocked
- In the case of manual operation of the three
position switch, a mechanical interlock can
become effective (optional)
• Details of further interlocks/dependencies, e.g.
with neighbouring systems, can be found in the
relevant order documents for the system
concerned
• The interlock polling (electrical only) between
panels, where implemented, is effected by loop
lines from panel to panel
Operation on failure of auxiliary power:
On failure of the auxiliary power, the devices can
be operated manually.
The details for the specific system are also to be
observed.
Where no mechanical interlock or optional interlock
is fitted, intervention in the interlock concept is
possible by opening the control cabinet door.
Emergency manual operation is possible by means
of a hand crank and mechanical push button.
Note
Perform all switching operations fully until the
defined limit position is reached!
• Switch off the mcbs for the circuit breaker
release circuit and operating mechanism of
the three position switch
3.8.2 Function of the interlock between the circuit
breaker and the three-position switch
3.8.2.1 Interlocks in general
In order to prevent hazardous situations and
maloperation, a series of interlocks are provided
to protect the operators and the switchgear itself.
Note
If the operating mechanism for the three position
switch fail during a switching operation, when
the switch is in an intermediate position, the
electrical interlock between the VD4 X-R circuit-
breaker and the UX2TE-R three position switch
established by the REO 517 is effective. The VD4
X-R circuitbreaker could however be closed
mechanically when the low voltage compartment
door is open.
3.8.2.2 Mechanical interlock (optional)
In addition to the electrical interlock, a mechanical
interlock can be established between the circuit
breaker and the three position switch in a panel.
The interpanel interlock between the circuit
breaker and the three position switches in the
sectionaliser and riser panels is effected in the
riser panel by means of a blocking magnet.
Closing of the circuit breaker is prevented by the
blocking magnet on failure of auxiliary voltage
and when the three position switch is in an
intermediate position. Mechanical opening of
the circuit breaker is always possible when the
low voltage compartment door is open.
Access to the manual operating shaft of the three
position switch is blocked by a flap when the
circuit breaker is closed.
The mechanical interlock is effective even on
failure of auxiliary voltage.
3.9 Earthing a tee-off
3.9.1 Electrical operation using the multifunction
protection and bay control unit REO 517 or
the buttons on the panel front
Operating sequence for tee-off earthing:
• Circuit breaker (-Q0) OFF
• Disconnector (-Q1) OFF
• Earthing switch (-Q5) ON
• Test for off-circuit condition
• Circuit breaker (-Q0) ON
• Secure panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
and for the operating mechanism of the
three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing:
• Open the control cabinet door and switch on
the mcb release the OFF button for the circuit
breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q5) OFF
15DESIGN AND FUNCTION OF THE SWITCHGEAR SYSTEM AND ITS EQUIPMENT
—
Figure 3/1
Panel front view
with multifunction
protection and
switchbay control
unit, measuring
sockets for
capacitive voltage
indicator system at
front (optional),
with pressure relief
duct at top
(optional)
—
Figure 3/2
Panel type ZX1.5-R,
rear view.
Connection of two
cables per line
—
Figure 3/1
—
Figure 3/2
3.9.2 Manual earthing
Follow the same sequence as for electrical
operation, but using the manual push buttons
for the circuit breaker and the crank to operate
the three position switch.
When an additional mechanical interlock between
the circuit breaker and the earthing switch is fitted,
the following actions are necessary:
• Open the control cabinet door
• Switch off the circuit breaker (-Q0) by operating
the mechanical push button
• Open flap (2.22) on the three position switch
operating mechanism (see Interlocks, section
3.8.2b)
Note
Flap (2.22) can only be opened when the circuit
breaker is OFF.
Do not use excessive force!
• Switch off the disconnector (-Q1) with the
hand crank
• Switch on the earthing switch (-Q5) manually
using the hand crank (6.1). (Note: Observe
"Emergency manual operation" in section 6.2.2).
about 24 turns clockwise. Close flap (2.22) again
Note
When flap (2.22) is open, the circuit breaker is
blocked in the OFF position.
• Test for the off-circuit condition (capacitive
voltage indicator system, see section 6.4.1)
• Switch the circuit breaker (-Q0) on using the
mechanical ON push button
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit
breaker if necessary
• Label the panel to indicate that earthing has
been effected
Cancelling the earthing manually:
• Open the control cabinet door and switch on the
mcb Release the OFF button for the circuit
breaker if necessary
• Switch circuit breaker (-Q0) OFF with the
mechanical push button
• Open flap (2.22)
• Switch earthing switch (-Q5) OFF manually
• Close flap (2.22)
3.10 Earthing the busbar
The procedure for earthing the busbar or a busbar
section is dependent on the configuration of
thesystem. Systems with sectionalizers/risers
permit earthing ofa busbar section without
additional equipment.
3.10.1 Electrical earthing of a busbar section
using the sectionalizer/riser
Operating sequence:
• Circuit breaker in the sectionalizer panel OFF
• All disconnectors in the busbar section to be
earthed OFF, apart from the disconnector (-Q11
or -Q12) between the busbar section to be
earthed and the sectionalizer breaker
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating mechanism
of the three position switch
- Lock the control cabinet door or secure the
mechanical OFF button for the circuit breaker
if necessary
• Label the panel to indicate that earthing has
been effected
The busbar section is then earthed. All the panels
in the section concerned are to be secured to
prevent switching operations, e.g. by tripping
the mcbs.
Cancelling the busbar earthing:
• Open the control cabinet door in the sectionalizer
and switch on the mcb release the OFF button
for the circuit breaker if necessary
• Circuit breaker (-Q0) OFF
• Earthing switch (-Q51 or -Q52) OFF
3.10.2 Manual earthing of a busbar section
using the sectionalizer/riser
Perform the switching operations as described
in sections 3.9.2 and 3.10.1 accordingly.
3.10.3 Maintenance earthing of a busbar using
the test sockets in a tee-off
Condition:
• The tee-off is earthed (see section 3.9)
• All disconnectors in the busbar to be earthed
are OFF
Operating sequence:
• Fit a short-circuiting bridge to the test
sockets for the earthed tee-off and connect
to main earthing bar (3.1)
• Circuit breaker OFF
• Earthing switch OFF
• Disconnector ON
• Circuit breaker ON
• Secure the panel to prevent switching operations
- Switch off the mcbs for the circuit breaker
release circuit and for the operating
mechanism of the three position switch
- Lock the control cabinet door or secure the
OFF button for the circuit breaker if necessary
• Label the busbar to indicate that earthing
has been effected
The busbar is then earthed. All the panels affected
are to be secured to prevent switching operations,
e.g. by tripping the mcb.
Cancelling the busbar earthing:
• Open the control cabinet door for the outgoing
feeder and switch the mcb on, if necessary
releasing the OFF switch for the circuit breaker
• Circuit breaker (-Q0) OFF
• Disconnector OFF
Cancelling the tee-off earthing:
• Earthing switch ON
• Circuit breaker ON
• Remove the short-circuiting bridge from the test
sockets and seal the sockets with blanking plugs
• Circuit breaker OFF
• Earthing switch OFF
3.11 Test facilities
The panels are properly filled with insulating
gas at the works and tested to the VDE or IEC
standards.
Should there be any need to perform tests, the
tests are to be performed as follows:
• For voltage and current tests, direct access to
the conductors in the connection area is possible
without releasing the cable connection. Access
is effected via the test sockets (1.4)
Surge arresters must be removed during voltage
tests. The empty sockets must be closed with
insulating blanking plugs during testing!
Voltage transformers must be isolated from
the test circuit prior to testing.
• Voltage tests:
- Close and insulate free cable sockets with
blanking plugs!
See section 6.4 for further details and the
applicable test voltages.
- Perform cable tests with DC voltage or with
very low frequency (VLF) cosine or square
wave voltage
- Cable fault locations measurement with
impulse voltage and
- Switchgear tests (without cables) with AC
voltage can be performed with a test plug as
shown in figure 6/6 or a test cable
• A test plug for current tests as shown in figure
(6/7) can be used to test the protection devices
by primary current injection (see also the note
in section 6.4.4). This configuration is short-
circuit proof and can also be used as an
additional maintenance earth
The possible testing processes are described in
the following sections:
• Testing for the off-circuit
condition: Section 6.4.1
• Testing for the in-line
condition: Section 6.4.2
• High voltage tests: Section 6.4.3
• Maintenance earthing: Section 6.4.4.
16 ZX1.5-R INSTRUCTION MANUEL
—
Figure 3/3
Panel front view.
Shown without low
voltage
compartment door
—
Figure 3/4
Panel top, pressure
relief disk on the
circuit breaker
compartment Shown
before installation of
a pressure relief duct
or plasma
—
Figure 3/5 Panel top,
pressure relief disk
on the circuit-
breaker
compartment.
Shown with plasma
deflector assembled
1.3
—
Figure 3/3
—
Figure 3/4
—
Figure 3/5
1.15
17DESIGN AND FUNCTION OF THE SWITCHGEAR SYSTEM AND ITS EQUIPMENT
1.0 Circuit breaker compartment
1.1 Circuit breaker
1.12 Bushing circuit breaker compartment/busbar compartment
1.2 Circuit breaker operating mechanism
1.3 Pressure relief disk, above
1.7 Plug-in cable socket
1.8 Pressure sensor for circuit breaker compartment
1.9 Pressure relief duct (optional)
2.0 Busbar compartment
2.1 Three-position switch
2.10 Tee-off conductor
2.3 Pressure sensor for busbar compartment
2.4 Busbar
2.5 Plug-in busbar connector
3.0 Cable termination compartment
3.1 Main earthing bar
3.4 Cable plug
3.6 Lower pressure relief duct
3.7 High voltage cable
4.0 Control cabinet
4.3 Control cabinet door
4.4 Door-lock
5.3 Block-current transformer
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-C1 Capacitive voltage divider
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-C1 Capacitive voltage divider
—
Figure 3/5: Feeder
panel (single pole)
1250 A, shown with
pressure relief duct.
—
Figure 3/6: Feeder
panel (single pole)
2000 A, up to 4
cables, shown with
pressure relitf duct.
—
Figure 3/5
—
Figure 3/6
18 ZX1.5-R INSTRUCTION MANUEL
1.1 Circuit breaker
1.12 Bushing circuit breaker compartment/busbar compartment
1.2 Circuit breaker operating mechanism
1.3 Pressure relief disk, above
1.6 Measuring sockets for capacitive voltage indicator
1.7 Plug-in cable socket
1.8 Pressure sensor for circuit breaker compartment
1.9 Pressure relief duct (optional)
2.0 Busbar compartment
2.1 Three-position switch
2.10 Tee-off conductor
2.11 Pressure relief disk for busbar compartment
2.12 Drying agent bag, busbar compartment
2.2 Three-position switch operating mechanism
2.3 Pressure sensor for busbar compartment
2.4 Busbar
2.5 Plug-in busbar connector
3.0 Cable termination compartment
3.1 Main earthing bar
3.2 Panel/panel connecting link
3.4 Cable plug
3.6 Lower pressure relief duct
3.7 High voltage cable
4.0 Control cabinet
4.1 Central unit of the Bay Control and Protection Unit
4.2 HMI of the Bay Control and Protection Unit
4.3 Control cabinet door
4.4 Door-lock
4.5 Measuring sockets for capacitive voltage indicator, optional
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-C1 Capacitive voltage divider
-C2 Capacitive voltage divider,
optional
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-C1 Capacitive voltage divider
-C2 Capacitive voltage divider,
optional
—
Figure 3/7: Outgoing
feeder panel(double
pole) 1250 A, with 2
cables per pole and
shown with pressure
relief duct
—
Figure 3/8: Outgoing
feeder panel (double
pole) 1250 A, with 2
cables per pole and
voltage transformer.
Isolating system 2.9 is
only to be operated
when the feeder is
off-circuit. Always
perform switching
operations up to the
limit positions and
lock the isolating
system.
—
Figure 3/7
—
Figure 3/8
ZX1.5-R
5.2
2.34
4.0
4.3
1.8
4.2
1.2
1.12
4.5
2.3
4.2
4.4
2.0
4.1
2.5
2.10
2.4
2.11
3.6
1.0
1.3
5.3
5.4
1.1
1.6
1.7
3.4
2.1
3.1
3.0
3.7
3.15
1.9
2.9
2.8
19DESIGN AND FUNCTION OF THE SWITCHGEAR SYSTEM AND ITS EQUIPMENT
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-T5 Voltage transformer
-C1 Capacitive voltage divider
-C2 Capacitive voltage divider,
optional
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-T5 Voltage transformer
-C1 Capacitive voltage divider
ZX1.5-R
—
Figure 3/9:
Outgoing feeder
panel (double pole)
2000 A, with 4
cables per pole and
voltage transformer.
Isolating system 2.9
is only to be
operated when the
feeder is off-circuit.
Alwaysperform
switching operations
up to the limit
positions and lock
the isolating system.
—
Figure 3/10:
Outgoing feeder
panel (double pole)
2500 A, with 4
cables per pole and
shown with pressure
relief duct .
—
Figure 3/9
—
Figure 3/10
ZX1.5-R
20 ZX1.5-R INSTRUCTION MANUEL
Insulating gas
-Q0 Circuit breaker
-Q1 Tee-off disconnector
-Q5 Tee-off earthing switch
-T1 Current transformer
-T5 Voltage transformer
-C1 Capacitive voltage divider
-C2 Capacitive voltage divider,
optional
ZX1.5-R
—
Figure 3/11:
Outgoing feeder
panel (double pole)
2500 A, with 4
cables per pole and
busbar voltage
transformer, shown
with pressure relief
duct .
—
Figure 3/11
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