Areva HVX Series Owner's manual

HVX
0
HVX
Vacuum circuit-breaker
≤17,5 kV (>2500 A / ≤50 kA)
Installation
Operation
Maintenance
No. AGS 531 461-01
Edition 06/07
AREVA T&D
Technical instruction
MEDIUM VOLTAGE SWITCHING DEVICE

Manufacturer:
Rathenaustraße 2
D-93055 Regensburg
+49 (0)9 41/46 20-0
+49 (0)9 41/46 20-418
Service:
Should you have any queries as to our
service, please contact:
Service-Center
D-93055 Regensburg
+49 (0)9 41/4620-777
+49 (0)9 41/4620-778
AREVA Energietechnik GmbH
Sachsenwerk Medium Voltage
AREVA Energietechnik GmbH
Sachsenwerk Medium Voltage
http://www.areva-td.com/contactcentre/
[phone]
AREVA T&D
T&D Worldwide Contact Centre
© AREVA Energietechnik GmbH, Sachsenwerk Medium Voltage -2007-
All rights reserved to this technical instruction.
Reproduction and making available of this technical instruction, or extracts, to third parties are prohibited.
Only integral reproduction of this technical instruction is permitted with the written permission from AREVA Energietechnik GmbH,
Sachsenwerk Medium Voltage.
Electronic copies in e.g. PDF-format or scanned version have the status “for information only” .
The only valid version of technical Instructions are always enclosed directly to the product in question by the factory.

1 Regulations and Provisions 4
1.1 Remarks on this Technical Instruction 4
1.2 Terms and symbols used 4
1.3 Use in line with the intended purpose 4
1.4 Applied standards 5
1.5 Safety provisions 5
1.6 Disposal after the end of service life 5
2 Variants 6
3 Technical data 8
3.1 Type designation 8
3.2 Technical data 8
3.3 Control and operating devices 9
4 Shipping instructions 11
4.1 Packaging 11
4.2 Delivery 11
4.3 Storage 11
4.4 Transport 11
5 Assembly 12
5.1 Instructions for assembly 12
5.2 HVX-F –Mechanical assembly 12
5.3 HVX-E –Mechanical assembly 14
5.4 Connecting the control lines 15
6 Commissioning 16
6.1 HVX-E (withdrawable unit) 17
6.2 HVX-F (fixed type) 17
7 Operation 18
7.1 Control elements and operator interface 18
7.2 Interlocks 19
7.3 Charging the energy storing device 19
7.4 Switching the circuit breaker 20
7.5 Actuate withdrawable part 21
8 Servicing 22
8.1 Safety 22
8.2 Servicing schedule 22
8.3 Cleaning insulating components 23
8.4 Corrosion protection 23
8.5 Avoid condensation 23
8.6 Lubrication instructions 24
8.7 Maximum admissible number of breaking
operations of the vacuum chambers 27
9 Annex 28
9.1 Accessories 28
9.2 Auxiliary products 28
9.3 Screw fastenings 29
9.4 How to treat the contact surfaces 29
Content
3

1.3 Use in line with the
intended purpose
The HVX vacuum circuit-breaker is
intended exclusively as a switching
unit in air-insulated medium-voltage
switchgear. It may only be used in
the scope of the specified standards
and the switchgear-specific techni-
cal data. Any other use constitutes
improper use and may result in dan-
gers and damage.
Important:
Operating reliability and
service life depend on cor-
rect operation.
Disclaimer of liability
The manufacturer shall not be held
responsible for damage which oc-
curs if
•instructions in this Technical In-
struction are not complied with,
•the circuit-breaker is not opera-
ted according to its intended use
(see above),
•the circuit-breaker is assembled,
connected or operated improper-
ly,
•accessories or spare parts are
used which have not been appro-
ved by the manufacturer,
•the circuit-breaker is converted
without the manufacturer's appro-
val, or if inadmissible parts are at-
tached.
1.2 Terms and
symbols used
This Technical Instruction uses cer-
tain terms and symbols. They warn
about dangers or provide important
information which must be complied
with at all costs so as to avoid dan-
ger and damage:
„Warning“
This warning symbol in-
dicates dangerous
electrical voltage. Con-
tact with voltage may result in
fatal injury!
„Warning“
This warning symbol in-
dicates danger of inju-
ry. Observe alle instruc-
tions that are labeled with this
sign to avoid death or serious
injury.
„Important“
This notice symbol is used
for information which is im-
portant to avoid damage.
1.1 Remarks on
this Technical
Instruction
This Technical Instruction describes
transport, assembly, operation, hand-
ling and maintenance of the series
HVX vacuum circuit breakers.
It must be stored so that it is at any
time readily accessible and can be
used by persons who work on the
circuit-breaker or the switchgear
with this circuit-breaker.
When re-selling the circuit-breaker
or the switchgear with circuit-brea-
ker, make sure that this Technical In-
struction is transmitted as well.
The following additional documents
must be observed for this circuit-
breaker:
•Purchase agreement containing
the stipulations on the specific
equipment of the circuit-breaker
and the legal details.
•The contract specific circuit brea-
ker wiring diagram / documentati-
on
•Project notes regarding the HVX
circuit breaker
•For assembly and operation of
the circuit-breaker, the operating
manual of the switchgear in
which it is operated must be
complied with.
As our products are subject to conti-
nuous further development, we re-
serve the right to changes regarding
standards, illustrations and technical
data.
All dimensions not specified in detail
are in millimeters.
1 Regulations and Provisions
4

1.4 Applied
standards
The three-pole HVX vacuum circuit-
breaker
•corresponds to the requirements
for AC switchgear for voltages
above 1 kV acc. to IEC 62271-
100;
•complies, regarding its switching
capacity and insulating level,
ANSI C37.... (please enquire at
the manufacturer's)
•corresponds, as a withdrawable
unit, to IEC 62271-102.
Type approval of vacuum interrup-
ter chambers acc. to. RöV
The vacuum interrupter chambers
have been approved by the X-Ray
Ordinance (RöV) of the Federal Re-
public of Germany up to a maximum
voltage amounting to the rated short-
time power-frequency voltage (rated
power frequency withstand voltage)
defined by DIN VDE/IEC. Thus, they
satisfy the conditions for operation
exempt of approval up to the voltage
in question according to the X-Ray
Ordinance (RöV).
Environmental and
operating conditions
HVX circuit-breakers may only be
operated under normal operating
conditions acc. to IEC 60694. Ope-
ration under conditions deviating
from these is only admissible upon
consultation and with the written ap-
proval of the manufacturer.
1.5 Safety provisions
The work described in this Technical
Instruction may only be performed by
specialist electricians who have pro-
ved their experience with the HVX
circuit-breaker and all relevant Safety
provisions.
Applicable standards and regulati-
ons:
•The locally applicable accident
prevention, operating and work
instructions must be complied
with.
•Installation 2):
IEC 61936-1 / HD 637 S1
•Operation of electrical equip-
ment 2): EN 50110-1
2) The national standards applicable in
the country where the equipment is
to be installed must be complied
with.
Read these instructions carefully be-
fore you work on the circuit-breaker,
and perform the work detailed in it
according to the descriptions. Do
not perform any work on the circuit-
breaker which is not described in
this Technical Instruction.
Warning!
Before starting work on
the circuit-breaker, de-
energize the system,
verify it for zero voltage
and earth the system according
to the applicable safety rules
pursuant to EN50110-1.
Warning!
Before performing work
on the circuit-breaker,
switch off the supply
voltage and prevent it
from reclosing.
Warning!
There is a risk of injury
when working on the
drive mechanism.
Before commencing work, re-
lease the energy-storing device
by performing the operating se-
quence OFF-ON-OFF and re-
mount the drive´s transport se-
curing device (see Chapter 6).
1.6 Disposal after the
end of service life
A manual on disposal after the end
of the service life is available for dis-
posal of the HVX vacuum circuit
breaker.
Disposal at the end of the service life
is performed as a service by the Ser-
vice Center at the manufacturer's
which is subject to a fee. Please
contact the Service Center (see
page 2).
Ambient conditions
Temperature class
"minus 5 indoors" 1)
Ambient temperature
min./max. -5 / 40oC 1)
Average value over 24
hours (max.) 35oC 1)
Max. installation altitu-
de above sea level 1000 m 1)
1) higher values on request
5

1
2
3
4
5
6
7
8
9
10
11
12
13
14
16
15
Fig. 2.1
Vacuum circuit breaker HVX-F – fixed type
2 Variants
6
1 64-pole low-voltage terminal
2 Information plate for commissioning
3 User interface
4 Switch circuit-breaker ON
5 Switch circuit-breaker OFF
6 Handles (optional)
7 Nameplate
8 Position indicator of closing spring
9 Position indicator of circuit breaker
10 Insertion opening for manual char-
ging of the closing spring
11 Operation counter
12 Press rod (transfer of ON/OFF swit-
ching movement)
13 Drive casing
14 Vacuum interrupter chamber
15 Conductor bar terminal
16 Pole partitions

1
2
3
7
9
10
11
12
13
14
Fig. 2.2
Vacuum circuit breaker HVX-E with withdrawable part for PIX switchgear panels
1 Low-voltage terminal
2 Information plate for commissioning
3 User interface
4 Position indicator - withdrawable
part in service position
5 Position indicator - withdrawable
part in disconnected position
6 Lever for locking/unlocking the with-
drawable part in the panel
7 Insertion opening for manual racking
in/out the withdrawable part
8 Slide for opening the insertion ope-
ning (7) for manual racking the with-
drawable part in and out manually
9 Withdrawable part´s rollers
10 Withdrawable part
11 Press rod (transfer of ON/OFF swit-
ching movement)
12 Vacuum interrupter chamber
13 Moving contacts
14 Pole partitions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Fig. 2.3
Vacuum circuit breaker HVX-E with withdrawable part for PIX high current switchgear
panels
7

3 Technical data
3
4
1
2
Rated voltage Ur[kV] 12 17,5
Rated lightning impulse withstand voltage Up[kV] 75 95
Rated power frequency withstand voltage Ud[kV] 28 38
Rated operating current Irmax. [A] 3150 1)
Rated cable-charging breaking current Ic[A] 25 31,5
Rated short-circuit breaking current Isc max. [kA] 50
Rated short-time current Ikmax. [kA] 50 (3 s)
Rated frequency fr[Hz] 50/60
8
3.1 Type designation
The type designation on the name-
plate (Fig. 2.1) specifies essential
technical data. The type designation
(1) is broken down in this example.
The following data on the nameplate
are relevant for replacement or in
case of any queries:
•Type designation (1)
•Serial number (2)
•Year of construction (3)
Fig. 2.1
Nameplate
1 Type designation
2 Serial number
3 Year of construction
4 Technical data
3.2 Technical data
1) Higher rated currents possible on request (with fan)
Example HVX 12 - 50 - 12 - E
Series HVX
Rated voltage 12 kV
Rated short-circuit breaking current 50 kA
Rated normal current 1250 A
F: fixed type
E: Withdrawable unit

The circuit breaker has been desi-
gned on principle so as to permit
manual operation.
The drive mechanisms of the indivi-
dual switching devices can be
equipped, depending on the specific
customer's model, with additional
electrical control and operating devi-
ces. These are defined in the circuit
breaker-specific wiring diagram ( see
separate documentation).
Component fitting options:
Motor
•for charging the energy-storing
device (spiral spring)
•HVX-E: electric actuation of the
withdrawable part
Closing release
•1 ea.
Opening release
•3 ea. max.
Secondary release
(Transformer-operated release)
•1 ea. max.
Maximum equipment opening release
and secondary release: 3 units in to-
tal
Undervoltage release (optional)
•1 ea.
Blocking coil
•Blocking coils prevent the circuit
breaker from being closed and
opened via the push-buttons
"ON" or "OFF", as well as manual
actuation of the withdrawable
part.
If the rated supply voltage has
fallen or is shut off, all blocking
coils are in "blocked" position.
Anti-pumping relay
If an ON and OFF command is si-
multaneously and permanently pre-
sent at the circuit-breaker, the latter
returns to its initial position after clo-
sing. It remains in this initial position
until the ON command is issued
anew. This prevents continuous clo-
sing and opening ("pumping").
Power consumption, solenoids and motor
Solenoids/motor Power consumption [W]
Closing release <250
Opening release <250
Undervoltage release 15
Secondary release 12
Motor for energy-storage device
for withdrawable part
150
< 200
Information about the power consumption of solenoids and the motor is available from
the manufacturer. The supply voltage data is required to this effect.
Operating times for solenoids and motor
Minimum command time "OFF" el. tripping [ms] 20
Minimum command time "ON" el. tripping [ms] 20
Motor charging time [s] 4 – 12
9
3.3 Control and operating devices
Overview of rated supply voltages
Direct voltage DC [V] 24 48 60 110 125 220
Alternating voltage AC [V] (110) / 120 (220) / 230

Other switching functions of the au-
xiliary switch can be set by adjusta-
ble cams (Fig. 2.2).
Important:
The auxiliary switches may
only be set by specialists
who dispose of experience
regarding the auxiliary switches in-
stalled. Auxiliary switches must not
be disassembled.
10
Nocken
Blickrichtung
für die Einstellung
Auxiliary switch
Auxiliary switches are always actua-
ted directly by the switch shaft via an
intermediate linkage. Their position
always corresponds to that of the
main contacts.
The switching functions have been
set in the factory according to the
circuit diagram.
Rated supply voltage
DC AC
[V] 24 48 60 110 220 120 230
Switching capacity [A] 8 4 3 2 1 10
Time factor T=L/R [ms] <20 –
Rated short-time current 100 A for a duration of 30 ms
Rated continuous current [A] 10
Fig. 2.2
Setting the cams of the auxiliary switch
Rated
supply voltage
DC AC
[V] <48 125 220 120 230
Switching capacity [A] 10 3,8 210
Time factor T=L/R [ms] 10 20 –
Rated short-time
current 250 A / 3 s
Rated continuous
current [A] 15
Technical data of auxiliary switches for circuit-breaker (3 x 8-pole)
Cam
Viewing direction for
adjustment
Technical data of auxiliary switches on the withdrawable part for PIX high current panels
Auxiliary switch on the withdrawable part for PIX high current panels

4.1 Packaging
•As standard, the switching devi-
ces are packed in cardboard bo-
xes and fastened on a pallet by
means of two plastic straps.
•For sea transport, several card-
board boxes are additionally pak-
ked in a closed crate (also in
container transport). The crate is
hot-sealed in aluminium foil with
desiccant.
4.2 Delivery
•Handle shipping units carefully
when unloading and unpacking
them.
•Shipping units must be unpacked
immediately after receipt. Any da-
mage occurred in transit must be
recorded and reported immedia-
tely to the manufacturer.
•On delivery, the consignment
must be checked for complete-
ness.
•The supplier must be notified in
writing about any discrepancies.
4.3 Storage
If the switching devices are not in-
stalled immediately upon delivery,
they can be stored for max. 2 years if
packed in hot-sealed aluminium foil
with desiccant. The ambient conditi-
ons for storage must comply with the
admissible operating conditions.
Protect circuit breakers and acces-
sories against condensation.
Warning!
Sufficient stability and
evenness of the sup-
porting area (floor)
must be ensured.
Type HVX Weight [kg]
fixed type 230
withdrawable unit 330
(Guide values without packaging)
4 Shipping instructions
11
4.4 Transport
Transport using a forklift truck:
Only transport the circuit-breaker on
a pallet.
Transport without pallet:
Lift circuit-breaker acc. to Fig. 4.2.
3 ropes (not metallic steel cables)
Ø 12 to 15 mm or straps are requi-
red to this effect.
Warning!
Make sure the rope or
strap is strong enough
to bear the weight of
the circuit-breaker.
Important:
HVX-E circuit-breakers with
guide rollers on the withdra-
wable part (see also Fig. 5.4)
must be placed on wooden bars or
rails as shown in Fig. 4.1 in order
not to damage the guide rollers.
2
1
≥ 20
Fig. 4.1
Lifting and depositing the HVX circuit-breaker
1 Guide rollers (only on the withdrawable part for PIX panels and for pole center
spacing of 254)
2 Wooden bars or rails as base

Warning!
Observe the safety pro-
visions of chapter 1.5.
Warning!
Risk of injuries.
The energy storing de-
vice must not be char-
ged until assembly is finished.
5 Assembly
•Dimension drawings are made
available on request.
•Check technical data on name-
plate.
•Check supply voltage for the
control and operating devices in-
stalled.
The vacuum circuit-breakers HVX-F
and HVX-E are delivered in comple-
tely assembled and ready-to-operate
condition. They are supplied in posi-
tion "OFF" and with the energy sto-
ring device "released".
5.2 HVX-F – Mechanical assembly
Screws and attachments are not in-
cluded in the scope of supply.
Fastening the circuit-breaker
Warning!
The frame being used
must be suitable to
bear the weight of the
circuit-breaker (see Chapter 4).
Dimensions and arrangement of fas-
teners: see dimension drawing.
Important:
Comply with the specified
tightening torques (refer to
Annex).
Make sure not to distort the circuit-
breaker when screw-fastening it.
Earth terminal
•Design and dimensioning of the
circuit-breaker's earth terminal
acc. to IEC 62271-100.
•Select the cross section of and
the material used for the earth
conductor according to HD 637
S1 or the appropriate national
work instruction.
Fig. 5.1
HVX-F
Important:
Coat contact surfaces and
comply with the specified
tightening torques (refer to
Annex).
Connect earth line to the circuit-
breaker housing (see dimension
drawing).
12
5.1 Instructions for assembly

Connecting conductor bars
Important:
Aluminium conductor bars
must not be connected to
silver-plated connection
areas of the circuit-breaker. Inadmis-
sible matching of materials.
Important:
Coat contact surfaces and
comply with the specified
tightening torques (refer to
Annex).
•Take account of DIN 43 670 and
DIN 43 671 regarding the di-
mensioning for continuous cur-
rent.
•Maximum distance of the next
support point from the circuit-
breaker’s terminals in the directi-
on of the switch pole axis. 3 x
the pole center spacing of the
circuit-breaker (unless the next
supporting point is located in the
direction of the switch pole axis,
make sure that the circuit-brea-
ker pole is not exposed to higher
electrodynamic forces).
•Screw-fasten conductor bar
(take account of DIN 43 679).
•The circuit-breaker must not be
deformed by screw-fastening the
conductor bars.
Connection areas
on the circuit-breaker on the conductor bar
Silver-plated copper Copper or silver-plated copper
In case of aluminium:
use an intermediate layer of copper (thickness
0.1 mm) corresponding to the full size of the
connection area (reduction of rated normal
current by 13 %)
60
30
50 90
340
M12
Einschraub-
tiefe 15-22 mm
Fig. 5.2
High-voltage terminal for the HVX-F
13
M 12
Thread reach
15 – 22 mm

A transport truck (optional) is used
to rack the circuit-breaker into the
switchgear panel (Fig. 5.6). For the
design and method of operation of
the transport truck used, please refer
to the instructions for the panel in
question.
Placing the circuit-breaker on
transport truck and racking
it into the switchgear
Important:
When performing the follo-
wing assembly steps, ob-
serve and comply with the
instructions given for the panel used.
Important:
Optionally, HVX withdrawa-
ble units and panels may
be coded to match (Fig.
5.4). This is to prevent a withdrawa-
ble unit from being racked comple-
tely into the panel if the rated data
do not match.
1. Check the ratings indicated on
the nameplate between the
HVX-E and the appropriate pa-
nel.
2. Place the circuit-breaker on the
transport trolley rails.
3. Lock the circuit-breaker on the
transport trolley.
4. Couple the transport trolley to
the panel.
5. Unlock the circuit-breaker from
the transport trolley and rack the
circuit-breaker into the panel.
– HVX withdrawable units for
PIX panels must latch into
the lock rocker of the panels
(Fig. 5.4).
– HVX withdrawable units for
PIX High Current Panels are
anchored in the panel by ac-
tuation of the withdrawable
part interlock (Fig. 5.5).
6. Release the transport trolley
from the panel.
Fig. 5.3
Transport truck with HVX-E circuit-breaker in front of the panel
14
1 Spindle of the withdrawable part
2 Spindle nut of withdrawable part
(must be latched in the cell)
3 Circuit-breaker coding
4 Guide rollers
1
2
3
4
5.3 HVX-E – Mechanical assembly
Fig. 5.5
Withdrawable part locking device in pa-
nel
Fig. 5.4
Bottom of a HVX-E circuit breaker for PIX switchgear panels

The control lines are connected, de-
pending on design, via control con-
nectors (Fig. 5.9 and 5.10) or con-
trol lines to the terminal strips in the
drive casing. The control lines are
wired in the circuit-breaker up to the
control connector or up to the termi-
nal strip.
Single-wire conductors or strands
can be connected
•to terminal strip up to 2.5 mm2
•in control connector up to 1.5
mm2
Terminal with control connector
Push the control connector onto the
64-(36-) pin right-angle plug-and
socket connector of the circuit-brea-
ker, and lock it (Fig. 5.9 und 5.10).
Important:
Connector interlock in case
of HVX-E: The control con-
nector on the panel can
only be inserted or removed while
the circuit-breaker is in disconnec-
ted position.
Connection to terminal strip
1. Remove the cover plate.
2. Connect external control lines via
the terminal strip (Fig. 5.11). The
valid wiring diagram has been en-
closed with each circuit-breaker.
If additional control lines are pla-
ced in the drive casing, leave a
sufficient distance from the mo-
vable parts of the drive.
3. After connecting the external
control line, mount the cover pla-
te.
Important:
Comply with the tightening
torques specified for
screw-fastening (refer to
Annex).
1
Fig. 5.11
1 Control connection on terminal strip
15
Fig. 5.6
Equipotential bonding within the cell
Optionally, the HVX-E circuit-breaker
is available with short-circuit proof
earthing (Fig. 5.7 und 5.8).
1
Fig. 5.7
1 Earth bar at the HVX-E for PIX
switchgear panels
5.4 Connecting the control lines
1
Fig. 5.8
1 Earth bar at the HVX-E for PIX high
current switchgear panels
12
Fig. 5.9
Control connector, 64-pin
1 Insert control connector
2 Lock
Fig. 5.10
Insertion of the control connector, 36-pin
Earth terminal
The switching device potential is lin-
ked to the panel via the four wheels
of the withdrawable part (Fig. 5.6).

•Check circuit-breaker for external
damage.
•Make sure that there are no ex-
ternal parts in the circuit-breaker
compartment.
•Check surface of insulating com-
ponents for impurities. If neces-
sary, clean (see Chapter 8).
Important:
Observe the operating and
locking conditions (Chap-
ter 7).
Important:
The energy storing device
of motorized circuit-brea-
kers is charged automati-
cally once the supply voltage is ap-
plied.
Important:
Undervoltage releases (op-
tional) enable switching
tests only to be performed
with the supply voltage applied.
6 Commissioning
1
3
2
Important:
Observe the warning and
notification plates on the
front cover and in the drive
(Fig. 6.1).
The circuit-breaker is equipped with
a transport securing device in the
drive (Fig. 6.1). Remove transport
securing device before commissio-
ning:
Remove transport protection
1. Remove front cover.
2. Remove transport securing devi-
ce (red) by releasing the thread-
cutting screw M5 using a wrench
of TORX-Nr. T25 (Fig. 5.2). Store
the device for maintenance work.
3. Secure front cover again using
the screws. Tightening torque:
4.7 Nm + 15 %.
Fig. 6.1
Remove transport securing device in the drive
1 Front cover
2 Transport protection
3 Label with instructions for commissioning
16

6.1 HVX-E
(withdrawable unit)
Perform functional tests:
1. Charge energy-storing device
using the crank. Check the spring
position indicator.
2. Switch circuit-breaker on and off
several times by hand. Check po-
sition indicator.
3. Move the withdrawable part to its
service and disconnected positi-
on via the crank handle.
Check mechanical interlocks bet-
ween the HVX-E and the cell.
Check position indication.
4. Check electrical functions of con-
trol and operating devices.
Apply supply voltage.
5. Actuate the releases to perform
switching operations and check
functions/interlocks. Watch posi-
tion indicators.
6. Rack the circuit-breaker in and
out via the motor-drive (optional).
At the same time, check the posi-
tion indicators and the interlocks
in the circuit-breaker and with re-
gard to other devices.
6.2 HVX-F
(fixed type)
Check assembly work:
– Check securing bolts.
– Check the conductor bars'
screw couplings using a tor-
que wrench.
– Check the screw coupling of
the earth terminal.
Perform functional tests:
1. Charge energy-storing device
using the crank. Check the spring
position indicator.
2. Switch circuit-breaker on and off
several times by hand. Check po-
sition indicator.
3. Check electrical functions of con-
trol and operating devices.
Apply supply voltage.
4. Actuate the releases to perform
switching operations and check
functions / interlocks.
Watch position indicators.
5. Check interlocks between circuit-
breaker and other devices.
17

7.1 Control elements and operator interface
1
2
3
4
Fig. 7.3
Control elements for the circuit-breaker
HVX-E in PIX switchgear panels
Sachsenwerk Type HVX 24 -16 -00 -21
NO SW1 3340121001 1999
U 24 kV Im 800 A / 50/60 Hz
Um 125 kV Isc 16 kA /th 3 s
0 - 3min - 00-3min-00
Made in Germany
00215
HVX
0l
Fig. 7.1
Operator interface of HVX circuit-breaker
1 closed door of switchgear panel
2 ON/OFF operating rod
3 Spring charging crank for energy
storing device
4 Moving crank handle for withdrawa-
ble part
1
3
2
Fig. 7.2
Control elements for the circuit-breaker
HVX-F
7 Operation
18
1
2
3
4
Fig. 7.4
Control elements for the circuit-breaker
HVX-E in PIX high current switchgear
panels
button (rocker “O”) or pushbutton “O”
to switch circuit breaker OFF (open)
button (rocker “I”) or pushbutton “I” to
switch circuit breaker ON (close)
Nameplate
Operation counter
Position indicator of circuit breaker
Position indicator of closing spring
Insertion opening for charging the
energy storing device

7.2 Interlocks
Warning!
You must be familiar
with these interlocks
before operating the
circuit-breaker.
19
Fig. 7.5
Turn spring charging crank until the po-
sition indicator of the energy storage de-
vice indicates "charged".
Via motor
The energy storing device of motori-
zed circuit-breakers is charged auto-
matically as soon as the supply vol-
tage is applied.
Manually
Move circuit-breaker in "ready-for-
closing" position:
1. Insert crank into opening for ten-
sioning the energy storing device
(Fig. 7.5).
2. Charge the spiral spring using
the spring charging crank. As
soon as the spiral spring is char-
ged, the spring charging mecha-
nism is decoupled and the positi-
on indicator signals "charged"
(Fig. 7.5). If the motor starts du-
ring this process, this does not
constitute a risk.
3. Remove crank. The circuit-brea-
ker is ready for closing (table in
chapter 7.4, Pos. 2).
7.3 Charging the energy storing device
Mechanical interlocks
The HVX switch features basic inter-
locks to prevent operating errors.
Electrical interlocks
have been designed according to
the circuit diagram.
Interlock Function of interlock Method of operation of interlock
Between the circuit-breaker
withdrawable part and the
low-voltage connector
Switch cannot be moved into service position un-
less the low-voltage connector is inserted and lok-
ked
The opening for the moving crank
handle is locked
The low-voltage connector can only be inserted or
removed while the withdrawable part is in its dis-
connected position
The interlock between low voltage
connector and the withdrawable
part is activated
Between the circuit-breaker
withdrawable part and the
earthing switch
The withdrawable part cannot be moved to service
position in while the earthing switch of the switch-
gear panel is in "ON" position
The moving crank handle is uncou-
pled automatically
The earthing switch cannot be switched on once
the withdrawable part has left its disconnected po-
sition
The earthing switch cannot be
switched on. Do not apply force!
Between the circuit-breaker
and the withdrawable part
Circuit-breaker cannot be moved to service/discon-
nected position while it is switched on
The opening for the moving crank
handle is locked
The circuit-breaker cannot be switched on unless
– it is completely set to its service/ disconnected
position and
– the actuating crank for the withdrawable part
mechanism has been removed
The circuit-breaker cannot be swit-
ched on or off

Opening (OFF)
• Push button "OFF" (O) or
•actuate via opening release or
•by undervoltage release or se-
condary release
The position indicator shows the
switch position "OFF" (table item 1
or 2).
The position of the auxiliary switch
has changed.
20
Closing (ON)
• Push button "ON" (I) or
•actuate closing release electrical-
ly
The position indicator shows the
switch position "ON" (table item 3).
The position of the auxiliary switch
has changed.
The energy storing device can be
charged immediately after switching
ON (by hand or by motor). If supply
voltage is applied to the motor, char-
ging is performed automatically.
The position indicator shows the
energy storing device position "char-
ged" (table item 4).
l
0
7.4 Switching the circuit breaker
Position indicators on circuit-breaker and possible operating sequences
C = Switching ON O = Switching OFF
Item Position indicator
Energy-storing device
(closing spring)
Position indicator
ON/OFF
Switch position
possible operating
sequence
1released OFF none
2charged OFF C - O
3released ON O
4charged ON O - C - O