MCset 1-2-3
Medium Voltage Switchgear
Withdrawable circuit breaker
17.5 kV
User manual
MCset
Contents
General
2
General description
4
Instructions for access to the inside of a cubicle
11
Glossary
Symbols
Recommendations
Standard tightening torques
2
2
3
3
Warning for readers
AD cubicle
TT1, TT2 cubicles
CL-GL cubicles
RHB, RHC cubicles
Withdrawable mobile part
Identification
Read the inscriptions on the front panel
4
4
5
5
6
6
9
9
AD cubicle
Removing front protection cover plates
Removing the MV compartment separation sheet
Removing the manhole sheet
Removing and inserting fixed or withdrawable VTs
Access to lower compartment
(cables, CT, earthing switch, surge arresters)
Accessing busbars
Accessing plug-in pins
15
15
16
Installation and operation recommendation
17
Steps for the tests
18
Operating Instructions
20
Corrective maintenance
36
Voltage presence on MV cables
MV cable tests
18
18
Extracting or inserting the mobile part
Plugging in the mobile part
Withdrawing the mobile part
Closing the earthing switch
Opening the earthing switch
Plugging in VT fuses
Withdrawing VT fuses
Padlocking and preventing access using padlocks
Locking using locks (option)
Locking using an electromagnet (option)
Forward
Summary table
Replacement of VT compartment fuses
Replacing of a voltage indicator box
Replacing the fans on 3600 A/ 4000 A cubicles
Replacing the capacitor
Putting back the new capacitor
Schneider Electric
11
12
13
14
14
20
24
25
26
28
30
31
32
34
35
36
36
37
40
41
41
42
07897302EN indice: C0 - General
Glossary
Note: this document is available for all the
MCset 1-2-3 units ordered from the 1st of
March 2006.
UF
Functionnal Unit (cubicle + mobile part + Sepam)
AD
Incomming / outgoing cubicle
CL-GL
Withdrawable line coupling cubicle
TT
Measurement and busbar earthing cubicle
RHB
Bus riser cubicle through the top
RHC
Cable riser cubicle through the top
MTP
transition panel between an MCset cubicle and a MOTORPACT cubicle
DI
Fuse switch outgoing cubicle
TT
Voltage transformer
TC
Current transformer or current sensor
VPIS
Voltage Presence Indicating System
LV
Low voltage
MV
Voltage class, including levels 7.2 - 12 and 17.5 kV
SMALT
Earthing switch
Mobile part
Symbols
SMALT operation
LF
Withdrawable circuit-breaker with SF6 breaking which is used in
AD and CL cubicles
Rollarc 400
SF6 breaking withdrawable contactor equipping the AD1 cubicle
EVOLIS
Withdrawable circuit-breaker with vacuum breaking which is used
in AD and CL cubicles
CTV1
Vacuum breaking withdrawable contactor equipping the AD1
cubicle
ERT
Rack-in or rack-out and removal tool of the mobile parts on the
ground
Extraction table
Extraction or insertion table without the removal tool of the mobile
parts on the ground
Plug-in prevention position.
Locking possible.
Plug-in or withdrawal position.
Operation position.
Open earthing switch mechanical indicator
light.
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Schneider Electric
General
Closed earthing switch mechanical indicator
light.
Position can be locked using paslocks.
Operation position.
Mobile part operation
“Plugged-in” position.
“Withdrawn” position.
Insertion / extraction position.
Recommendations
It is necessary to have a height of ceiling H u 2.80 m to install a tunnel.
Height (H) of ceiling for
installation of an anti-arc or IPX1
tunnel
Installation above the
switchboard
All type of equipment installation such as lamp or light are forbidden.
It is compulsory forbidden to walk on the
parts bearing this marking.
Marking
It is compulsory forbidden to remove
the parts bearing this marking when the
equipment is energised.
Standard tightening
torques
(non greased screws and bolts)
Schneider Electric
Screw
Torque in Nm
Application methods:
Ø 6
13
Ø 8
28
Ø 10
50
The elastic washers placed on the external
sides of the pads and busbars ensure better
distribution of stress regarding screws
tightened to the recommended torques.
Ø 12
75
Ø 14
120
07897302EN indice: C0 - General description
Warning for readers
As the MCset range is very extensive and presents a vast number of front panel options, we
have decided to present a Functional Unit presentation equipped with the maximum switchgear.
AD cubicle
AD1 630/1250 A
AD2 630/1250 A
AD3 2500/3150/3600/4000 A
Incomer/outgoer
without VT or with fixed VT
Incomer/outgoer with
withdrawable VT fuses
A: LV compartment door
B: protection, monitoring, control by Sepam
C: compartment door mobile part
D: position inspection windows
of the mobile part
E: operation and locking plate
of the mobile part
F: voltage indicators
G: earthing switch operation and locking
plate and padlocking of the mobile part
H: access panel to connection compartment of MV cables
or withdrawable VT fuses
J: visualisation windows of cables or
of VT fuse position
K: operation and padlocking plate of withdrawable VT fuses
L: fan compartment (on 3600 A / 4000 A)
M: cable compartment (on 3600 A / 4000 A)
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Schneider Electric
General description
TT1, TT2 cubicles
A:
B:
D:
F:
G:
H:
J:
K:
L:
Voltage transformers with withdrawable
fuses
Voltage transformers without VT or with
fixed VT
LV compartment door
protection, monitoring, control by Sepam
visualisation windows
voltage indicators
earthing switch operation and locking
plate and padlocking of the mobile part
access panel to connection compartment of MV cables
or withdrawable VT fuses
visualisation windows of cables or
of VT fuse position
operation and padlocking plate of withdrawable VT fuses
compartment door fixed busbar bridge.
CL-GL cubicles
Circuit-breaker
coupling cubicle
Bus riser cubicle
With upstream and
downstream VT with
withdrawable fuses
A:
B:
C:
D:
E:
F:
G:
J:
L:
M:
N:
P:
LV compartment door
protection, monitoring, control by Sepam
compartment door mobile part
position inspection windows
of the mobile part
operation and locking plate
of the mobile part
voltage indicators
earthing switch operation and locking
plate and padlocking of the mobile part
visualisation windows of cables or
of VT fuse position
access panel to withdrawable VT fuses
and to the lower busbar compartments
operation and padlocking plate of withdrawable VT fuses
compartment door fixed busbar bridge
fan compartment (on 3600 A / 4000 A)
Schneider Electric
07897302EN indice: C0 - General description
RHB, RHC cubicles
RHB1, RHC1 630/1250 A
RHB2, RHC2 630/1250 A
RHB3, 2500/3150/3600/4000 A
RHC3, 2500/3150 A
A:
B:
C:
D:
E:
F:
G:
H:
J:
K:
L:
M:
LV compartment door
protection, monitoring, control by Sepam
compartment door mobile part
position inspection windows
of the mobile part
operation and locking plate
of the mobile part
voltage indicators
earthing switch operation and locking
plate and padlocking of the mobile part
acces panel to the busbars or to the withdrawable VT fuses
visualisation windows of cables or
of VT fuse position
operation and padlocking plate of withdrawable VT fuses
connection through the top using busbars (RHB) or cables (RHC)
fan compartment (on 3600 A / 4000 A)
Withdrawable mobile part
LF1
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Schneider Electric
General description
LF2
LF3
Disconnector carriage
Note: available in 3 widths.
Busbar earthing carriage on
circuit-breaker base
Note: option available in 3 widths.
Schneider Electric
07897302EN indice: C0 - General description
ROLLARC 400
CTV1
Evolis
Note: available in 3 widths.
Busbar earthing carriage on
Evolis base
Note: available in 3 widths.
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Schneider Electric
General description
Identification
Ex : AD functional unit
A: name of the cubicle
B: manufacturer’s label
C: characteristics, designations and serial
number.
LF withdrawable mobile part
D: characteristics, designations and serial
number.
Rollarc or CTV1 withdrawable mobile part
E: characteristics, designations and serial
number.
Evolis withdrawable mobile part
F: characteristics, designations and serial
number
G: location of operating instructions
(behind the cover).
Read the inscriptions on
the front panel
A:
B:
C:
D:
procedure pictogram
withdrawable mobile part
earthing switch plate
withdrawable fuse voltage transformer
plate.
Schneider Electric
07897302EN indice: C0 - General description
Procedure pictogram
1: mobile part operation
2: earthing switch operation.
Mobile part
1: mechanical opening push-button
2: mobile part position selector
3: opening for inserting mobile part operating handle
E: mechanical indicator light for indication
of the mobile part position
F: location for disconnector carriage lock
(optional).
Cubicle
Earthing switch, voltage presence and
plug-in prevention
4 : earthing switch position selector
5 : opening for the insertion of the earthing
switch operating handle
G : voltage presence
H : plug-in prevention selector switch
L : mechanical indicator of earthing switch
status
M : location for plug-in prevention lock
N : location for earthing switch locks.
Withdrawable voltage
transformer
6 : position selector switch for voltage transformer withdrawable fuses
7 : opening for the insertion of the voltage
transformer withdrawable fuse operating
handle.
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Schneider Electric
Instructions for access
to the inside of a cubicle
AD cubicle
Schneider Electric
Markings
Access
1
To the lower compartment via the maintenance space or duct
(access same as for CT)).
2
Rear (dismantling is optional and has not been secured).
3
Facilitates access to cables (AD cubicle ), through the front
(access same as for CT).
4
To the busbars (not possible for VT cubicle).
4 and 5
To the rear inter cubicle fastening screws.
This sheet must be reassembled before installation of busbars.
6
To the lower compartment through the front
(analogue access for VT and CT).
7
To the mobile part.
8
To low voltage compartment.
07897302EN indice: C0 - 11
Instructions for access
to the inside of a cubicle
Removing front protection
cover plates
Cubicle with or without fixed
voltage transformer (VT)
Close earthing switch (see chapter “Closing
the earthing switch”).
In the case of a cubicle equipped with a
fixed VT.
It is recommended to padlock it in this
position (see chapter “Padlocking and
preventing access using padlocks”).
Open the protection switch of the VT
secondaries which is located in the
regrouping sleeve or in the LV compartment.
Closure
To place back into operation, carry out
operations in the reverse order of removal
(closed earthing switch).
Dismantle the panel (10 screws).
Cubicle equipped with a
withdrawable fusevoltage
transformer
Withdraw VT fuses (see chapter
“Withdrawing VT fuses”).
Close earthing switch (see chapter “Closing
the earthing switch”).
It is recommended to padlock it in this
position (see chapter “Padlocking and
preventing access with padlocks”).
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Schneider Electric
Instructions for access
to the inside of a cubicle
Open the protection switch of the VT
secondaries which is located in the
regrouping sleeve or in the LV compartment.
Remove the access panel to VT mobile
fuses (6 screws),as well as the U A angle
bar ( 4 screws and 2 nuts ).
Closure
To place back into operation, carry out
operations in the reverse order of removal
(closed earthing switch).
Remove the access panel to the connection
compartment of MV cables (4 screws).
Removing the MV
compartment separation
sheet
Remove the circuit-breaker (see chapter
“Removing and inserting the mobile
part”).
Remove screws A and remove
the separation sheet from
the MV compartment. .
Closure
Schneider Electric
To place back into operation, carry out operations in the reverse order of the removal.
07897302EN indice: C0 - 13
Instructions for access
to the inside of a cubicle
Removing the manhole
sheet
On a cubicle equipped with VTs, remove
them.
Remove the screws and remove manhole
sheet.
Access to the connection compartment of
MV cables is possible via the maintenance
space at the cubicle manhole level.
Likewise, it is possible to access the
maintenance space or duct through the
inside of the cubicle.
See chapter “Instructions for access to
the inside of a cubicle”.
Closure
To place back into operation, carry out operations in the reverse order of removal.
Removing and inserting
fixed or withdrawable VTs
Fixed VTs
On each VT, disconnect the connection rod,
by unscrewing the nut, then removing the
deflector, and raising the connection rod.
Similar operation whatever type
of VT
Closing the MV connection
compartment
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Disconnect the VT low voltage connector.
Remove the VTs using the handle.
To place back into operation, carry out
operations in the reverse order of removal.
For fixed VTs
Tightening torque on VT: 30 Nm.
Schneider Electric
Instructions for access
to the inside of a cubicle
Access to lower
compartment (cables, CT,
earthing switch, surge
arresters)
During the first VT insertion, cut
and remove the connector immobilisation
binding.
Connect the VT low voltage connector.
All operations described hereafter
must be carried out in compliance with
the safety standards in force, under the
responsibility of a competent person.
Access to the MV cable connection
compartement is possible through the
maintenance space by removing the cubicle
manhole sheet (see chapter “Removing the
manhole sheet”).
Safety rules
Accessing busbars
Safety rules
All operations described hereafter must be carried out in compliance with the safety
standards in force, under the responsibility of a competent person.
Upper
For access to busbars, see chapter “Instructions for access to the inside of the cubicle”.
Lower
Access to lower busbars is possible through the maintenance space by removing the cubicle
manhole sheet.
See chapter “Instructions for access to the inside of the cubicle”.
Schneider Electric
07897302EN indice: C0 - 15
Instructions for access
to the inside of a cubicle
Accessing plug-in pins
Safety rules
All operations described hereafter must be carried out in compliance with the safety
standards in force, under the responsibility of a competent person.
Opening and closing lower flaps
Using a screwdriver, raise the vane to
release the locking.
Push the ball into the link axis.
The flaps fall downwards up to locking.
To close, pull the flaps upwards up to
locking.
Using a screwdriver, raise the vane to
release the locking.
Push the ball into the link axis.
Push the flaps upwards up to locking.
To close, pull the flaps downwards up to
locking.
Opening and closing upper flaps
Before re-plugging in the mobile part, ensure that the shutters mechanisms have
been put back into their initial position (locked closed). Failure to comply with this instruction
may result in damage to the equipment.
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Schneider Electric
Installation and operation
recommendation
the switchgear’s resistance
to ageing in an MV
substation depends on 3
main factors:
The necessity of correct implementation
of connections:
New cold retractable or slip-on technology
offers ease of installation that favours
resistance over time.
Their design allows them to used in polluted
environments with harsh climatic conditions.
Impact of the relative humidity factor:
Installing a heating device is essential in
climates with high relative humidity levels
and major temperature differences.
The equipment must be installed in
conformity with the relevant IEC standard.
Outside of these normal usage conditions,
we recommend contacting Schneider
Electric to determine the operations to
be carried out as well as their frequency
according to the actual service conditions.
Ventilation control:
Grid size must be suited to the power
dissipated in the substation. These grids
must be placed exclusively in the vicinity
of the transformer, in order to avoid air
circulation on the LV switchboard.
Ensure that draughts and / or thermal shocks
are avoided in all cubicle compartments in
order to avoid the creation of dew points
(sources of partial discharges).
Operation and maintenance
It is strongly advised to periodically carry
out, (minimun every 2 years approximately),
a few operation cycles on operating
devices.
Outside normal conditions of use,
(between -5°C and 40°C , absence of dust,
corrosive gas, etc.), it is recommended to
examine, with our Schneider Electric
services centre, the steps to be taken, in
order to ensure correct functioning of the
installation.
After 6 to 12 month operations, we
recommend you to check the busbars and
MV cable connection tightening.
It should be done with a calibrated torque
spanner, adjust to lower torque compare to
values indicated in page 4.
If no problems are detected and if the
busbars and cable connections haven’t been
modified, it will not necessary to do again
this check.
In case of dismantling, the elastic washers
must be change and replace by new ones
supplied by Schneider Electric.
Our service centre is at your disposal at
any time:
- To undergo an installation diagnostic,
- To offer you, if need be, suitable
maintenance operations,
- To offer you maintenance contracts,
- to offer you adaptations.
b Version 3600 A / 4000 A:
We strongly recommend that you clean
the ventilation grids regularly (every 2
years):
A : standard grids
B : grids on RHB version.
b A fan monitoring system must be installed with the cubicle control and
monitoring devices.
Permanent operation of the following
must be guaranteed:
- 1 fan for version 3600 A
- 2 fans for version 4000 A.
Schneider Electric
07897302EN indice: C0 - 17
Steps for the tests
Voltage presence on MV
cables
Cubicle equipped with VPIS
voltage indicator boxes
VPIS : Voltage Presence Indicating System,
a box with 3 integrated lamps.
Characteristics:
The definite “voltage presence” indication is
ensured on the voltage range stipulated by
IEC 61958.
Instruction for use
VPIS must not be used as a VDS (Voltage
Detecting Systems).
The indication of a VPIS alone does not
suffice to ensure that the system is deenergised:
if the operation rules require this, then
suitable voltage detectors in compliance
with IEC 61243 must be used for this.
A: voltage presence indicator light
(1 for each phase)
B: connection points enabling a phase concordance unit to be connected.
Open earthing switch.
Cables connected to injection tools.
Check voltage absence.
Close the earthing switch.
Voltage indicator lights are not lit.
See chapter “Closing the earthing switch”.
Once the cables are energised, the voltage
indicator lights should light up.
MV cable tests
Test condition
Voltage injections on MV cable
heads
On outgoing cables(without VT)
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Schneider Electric
Steps for the tests
Remove front protective cover plates.
See chapter “Instructions for access to
the inside of a cubicle”.
Connect the voltage injection circuit to cable
lugs.
Open the earthing switch. See chapter
“Opening the earthing switch”, then carry
out the tests.
At the end of the tests:
- Close the earthing switch
- Remove the accessories.
Schneider Electric
07897302EN indice: C0 - 19
Operating Instructions
Extracting or inserting the
mobile part
Starting status
Cubicle + mobile partin a disconnected /test
position.
Note: the following operations are described
using the extraction and insertion tool
application and the removal of mobile ERT
parts ...
...the operating mode is identical when using
the extraction table.
These tools can be adjusted in width and
height. See the corresponding manuals.
Open the access door to the mobile part by
pulling then turning the handle towards the
right.
Disconnect the LV auxiliary cord by pressing
on the red button and by pulling the socket
lock (circuit-breaker or contactor).
Bring the ERT into position (the pins
entered into the holes intended for this
purpose on the cubicle).
Lock the latching mechanism by pushing in,
then tipping the 2 OED notching operating
mechanism handles to the right (check
latching mechanism).
Extraction
Block the 2 ERT castors.
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Schneider Electric
Operating Instructions
Change the position of selector switch 2 to
and then, using handles A, remove the
mobile part.
Bring it up against to be butted against the
ERT.
Change the position of selector switch 2
back to
.
Note: moving the circuit-breaker on the ERT
must be done near the ground.
Disconnect the ERT by turning the 2
notching operating mechanism handles
towards the left then pulling them.
Unblock the ERT castors.
Remove the ERT then place the mobile part
on the ground by activating the handle.
Remove the ERT.
Before closing the access door to the mobile
part, pull down the panel.
Close the access door to the mobile part
by turning the handle towards the left, then
pushing it.
Schneider Electric
07897302EN indice: C0 - 21
Operating Instructions
insertion
Open the access door to the mobile part by
pulling then turning the handle towards the
right.
Bring the ERT into position. (the pins
entered into the holes intended for this on
the cubicle).
Block the 2 ERT castors.
Lock the latching mechanism by pushing
in, then turning towards the right the
2 ERT notching operating mechanism
handles (check latching mechanism).
Change the position of selector
switch 2 to
.
Push the mobile part into the cubicle until
butted against it then change the position of
selector switch 2 back to
.
Disconnect the ERT by turning then pulling
the 2 notching operating mechanism
handles to the left.
Unblock the 2 ERT castors and remove it.
22 - 07897302EN indice: C0
Plug in the LV socket, to do so, push and
keep pressing the red button located under
the lock pressed down.
Push the lock.
Connect the cord and notch it.
Schneider Electric
Operating Instructions
Before closing the access door to the mobile
part, lift the panel, and ensure that it is well
notched at the top.
Schneider Electric
Close the access door to the mobile part by
turning the handle to the left then pushing it.
07897302EN indice: C0 - 23
Operating Instructions
Plugging in the mobile part
Starting status
Door closed
Selector switch 4 to
(open earthing switch)
Selector switch H in plug-in or drawout
position to
Operation
Lower the protective flap of push-button 1.
Press push-button 1, and while keeping it
pushed down.
Change the position of selector switch 2
to .
Insert the crank into opening 3.
Plug in the mobile part by turning the crank
(45 turns) clockwise until the position
indicator changes status.
Change the position of selector switch 2
to
.
In the case of a circuit-breaker or a
contactor, the electric operation for charging
the downstream part of installation is now
possible.
The pictogram with a black background
on the front plate is a reminder of the
operations.
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Schneider Electric
Operating Instructions
Withdrawing the mobile
part
The mobile part in the plugged-in position.
Starting status
Operation
Press push-button 1 (which sends an order
for the mechanical opening of the circuitbreaker).
While keeping it pushed down, change the
position of selector switch 2 to
.
Insert the crank into opening 3.
Withdraw the mobile part by turning the
crank (45 turns) anti-clockwise until the
position indicator changes status.
Change the position of selector switch 2
to
.
The mobile part is withdrawn.
The cubicle is in the disconnected position.
The pictogram with a black background
on the front plate is a reminder of the
operations.
Schneider Electric
07897302EN indice: C0 - 25
Operating Instructions
Closing the earthing switch
Starting status
The mobile part is in a disconnected position
or in an extracted position, that is, absent
from the cubicle.
Check that the voltage presence lights
are not lit.
Any potential locks must enable the
operation to be carried out.
Operation
Change the position of selectorswitch 4
to
, by pulling it and turning it
towards the right.
Insert the crank into the pin of operating
axis 5, and turn it clockwise until the position
indicator changes status.
Closing is accompanied by a noise
(sudden closing).
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Schneider Electric
Operating Instructions
Change the position of selector switch 4
to , by pulling it and turning it towards the
right.
The earthing switch is in the closed position.
The MV cable heads are short-circuited and
earthed.
The pictogram with a yellow background
on the front plate, is a reminder of the
operations.
Schneider Electric
07897302EN indice: C0 - 27
Operating Instructions
Opening the earthing
switch
Closed earthing switch
Any potential locks must enable the
operation to be carried out.
Starting status
Operation
Change the position of selector switch 4
to
, by pulling it and turning it
towards the left.
Insert the crank into operating axis 5, and
turn it anti-clockwise until the position
indicator changes status.
The change of status is accompanied by a
sudden closing noise.
Change the position of selector
switch 4 to
by pulling it and turning
it towards the left.
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Schneider Electric
Operating Instructions
The earthing switch is in the open position.
The pictogram with a yellow background
on the front plate, is a reminder of the
operations.
Schneider Electric
07897302EN indice: C0 - 29
Operating Instructions
Plugging in VT fuses
Starting status
Assembled lower panel
Selector switch 6 to
Operation
Change the position of selector switch 6
to
, by pulling it and turning it
towards the right.
Insert the crank into operating axis 7, and
turn it clockwise until it is plugged in.
Plug-in is completed when resistance can be
felt (stop).
Change the position of selector switch 6
to
, by pulling it and turning it towards
the right.
The pictogram with a blue background
on the front plate, is a reminder of the
operations.
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Schneider Electric
Operating Instructions
Withdrawing VT fuses
Starting status
Assembled lower pane
Selector switch 6 to
Operation
Change the position of selector switch 6
to
, by pulling it and turning it
towards the left.
Insert the crank into operating axis 7, and
turn it anti-clockwise until drawout.
Change the position of selector switch 6
to
, by pulling it and turning it
towards the left (this authorises the removal
of the fuse access panel).
The pictogram on the front panel, is a
reminder of the operations.
Schneider Electric
07897302EN indice: C0 - 31
Operating Instructions
Padlocking and preventing
access using padlocks
Number of possible padlocks per
cubicle type
3 padlocks on the plug-in prevention selector
switch.
3 padlocks on the selector switch of plug-in
or drawout VT fuses.
Nota : used padlocks Ø 6 to 8 mm.
1 padlock on the protective flap of the
mechanical opening push-button of the
mobile part.
1 padlock on the operating mechanism of
each of the plug-in contact flaps
3 padlocks on the earthing selector switch in
the opened or closed position.
Preventing the plug-in
of a mobile part
Place 1 to 3 padlocks on the plug-in
prevention selector switch H.
Plug-in prevention in
Preventing the opening of
a compartment flap on the
withdrawable part (option)
Close with padlock
On the operating mechanism of the plug-in
contact flaps, when they are closed.
The flap operating mechanism is located
inside the cubicle, on the right side.
Press on the flap guide, and place the slides
(1 and 2, 1 or 2) then place the padlocks in
the holes.
40 kA/1s internal arc withstand:
to get to the shutters mechanism,
you must remove the metal sheet closing
(2 screws A).
The metal sheet must be installed before
to insert the circuit-breaker.
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Schneider Electric
Operating Instructions
Preventing the mechanical
opening order of a withdrawable
part in an operational position
Place 1 padlock on the mechanical opening
push-button protective flap 1.
Can also serve as an additional plug-in and
drawout lock out.
Padlocking the earthing switch
Open earthing switch:
place 1 to 3 padlocks on selector switch 4 to
prevent closure.
Closed earthing switch:
place 1 to 3 padlocks on selector switch 4 to
prevent opening.
This also prevents the plug-in of a mobile
part.
plugged-in fuses:place 1 to 3 padlocks on
selector switch 6 to prevent drawout.
This also prevents removalof the front panel.
Withdrawn fuses:place 1 to 3 padlocks on
selector switch 6 to prevent plug-in.
Padlocking the operation of VT
fuses
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07897302EN indice: C0 - 33
Operating Instructions
Locking using locks
(option)
Mobile part in a drawn out position:
1 lock on the cubicle (2 O) or (2 C) or (1
O and 1 C) or (1 O) or (1 C): on earthing
switch.
Disconnector carriage (withdrawable busbar
bridges):
1 lock in the plugged-in position (on the
disconnector).
Number of possible locks
Locking on a cubicle
The wrench is only released when plug-in
prevention is locked.
Locking the plug-in prevention of a mobile
part.
Locking the disconnector
carriage in the plug-in position
The wrench is only released when the
mobile part is in the plug-in and locked
position.
Closed disconnector
Plugged in disconnector carriage
Locking the earthing switchwith
a lock
1 lock in closed position
Locking the earthing switchwith
two locks
34 - 07897302EN indice: C0
1 lock in open position
(2 O) or (2 F) or (1 O et 1 F) or (1 O)
or (1 F).
Schneider Electric
Operating Instructions
Locking using an
electromagnet (option)
Locking the earthing switch
The electromagnet automatically locks
the earthing switch in the “open” and
“closed” position.
A push-button located on the low voltage
compartment authorises the operation
of selector switch 4, if switchboard
configuration is certain.
Locking on a cubicle
The electromagnet automatically locks
plug-in padlocking when it is activated.
Electromagnetic locking prevents the plug-in
of a mobile part.
A push-button located on the low voltage
compartment authorises unlocking,
if switchboard configuration is certain.
Schneider Electric
07897302EN indice: C0 - 35
Corrective maintenance
Forward
Corrective maintenance operations allow for
defective subassemblies to be replaced.
For any other intervention,call upon the
nearest Schneider group agents.
The operations mentioned in the summary
table here after can be carried out by the
customeror by Schneider Electric After Sales
agents.
After each operation, carry out electric
tests in compliance with the standards
in force.
Careful: during replacement, all the
following accessories must absolutely
be replaced by new equipment.
- Nylstop (self-locking nut)
- Contact washer
- Stop rings
- Mechanical pin.
Summary table
Description
Execution
Comments
Replacement on FU (cubicle AD or CL)
Busbar rating
Earthing switch clamps and capacitive isolators
For any intervention,
Plug-in pins
call the nearest
Upper and lower bushing
Schneider Electric
Increase in the number of cables
agents.
Flaps and flap operating mechanisms
Extraction of a cubicle
VT fuse
Customer/
See the following page
VPIS voltage indicator box
Customer/
See the following page
CT
Customer/
See Kit no. 07897207 instructions
Anti-condensation resistor
Customer/
Consult us
Earthing switch position auxiliary contact block
Customer/
See Kit no. 07897324 instructions
Surge arrester
Customer/
Consult us
Locking using plug-in padlocking lock(s)
Customer/
See Kit no. 07897330 instructions
Plug-in padlocking electromagnetic locking
Customer/
See Kit no. 07897326 instructions
Locking using earthing switch lock(1)
Customer/
See Kit no. 07897328 instructions
Locking using earthing switch locks(2)
Customer/
See Kit no. 07897329 instructions
Earthing switch electromagnetic lockin
Customer/
See Kit no. 07897325 instructions
Locking using lock(s) for prevention of withdrawal
Customer/
Consult us
Zero frequence toroid
Customer/
See Kit no. 07897216 instructions
VT and VT compartment
Customer/
See Kit no. 07897218 instructions
High voltage contacts on VT fuses
Customer/
See Kit no. 07897219 instructions
MV handles
Customer/
See Kit no. 07897220 instructions
Cable connection bar support isolators
Customer/
Consult us
Circuit-breaker carriage position auxiliary contacts
Customer/
See Kit no. 07897222 instructions
Withdrawable VT auxiliary contacts
Customer/
Consult us
Withdrawable VT fuse blowing auxiliary contacts
Customer/
See Kit no. 07897223 instructions
Printed circuit and relay support (STPI)
Replacing the fans on 3600 A / 4000 A cubicles
Cleaning ventilation grids on 3600 A / 4000 A cubicles
Customer/
Customer/
Customer/
Consult us
See page 41
See page 17
36 - 07897302EN indice: C0
Schneider Electric
Corrective maintenance
Replacement of VT
compartment fuses
Starting position
Withdrawn fuses and disconnected VT low
voltage connector (see chapter “Operating
instructions”).
Remove the protective panel (see chapter
“Instructions for access to the inside of a
cubicle”).
Removing
1: raise vane A
2: disconnect the small vertical rod B
3: pivot the striker pads C into a horizontal
position
4: carefully remove the pin from the striker
pads D.
Schneider Electric
07897302EN indice: C0 - 37
Corrective maintenance
5: push wrench E and turn towards the left
and let go. The fuse is unlocked.
6: Remove the wrench and the fuse.
Placing
Place the spring on the wrench and check
that it is butted against the bottom of the
wrench and positioned between the two clips
indicated by the arrows.
Place the fuses, with the strikers on the
outside.
Fit the wrenches on the fuses (spring
towards the bottom).
1: push wrench E
2: turn it towards the right and let go.
The fuse is locked, check the wrench
latching mechanism.
38 - 07897302EN indice: C0
Schneider Electric
Corrective maintenance
3: carefully insert the pin on the striker pads D.
4: raise vane A to place the striker pads C
in a vertical position.
5: connect the small vertical rod B to ensure free operation of the small rod.
Operation
Schneider Electric
Connect the VT low voltage connector (see
chapter “Operating instructions”).
Place protective panel (see chapter
“Instructions for access to the inside of a
cubicle”).
07897302EN indice: C0 - 39
Corrective maintenance
Replacing of a voltage
indicator box
Removing
This operation can be carried out while
the equipment is energised.
Placing
Remove the 2 fastening screws (A) from the
voltage indicator box.
Remove the voltage indicator box (B) and
disconnect the connector.
Check on the characteristics label (B)
that the new box corresponds to the rated
voltage of your network.
Place the new voltage indicator box in the
reverse order of removal.
- 1.7 kV to 3 kV
- 3 kV to 7.2 kV
- 10 kV to 24 kV.
40 - 07897302EN indice: C0
Tightening torque: 0.1 mdaN.
Schneider Electric
Corrective maintenance
Replacing the fans on
3600 A / 4000 A cubicles
With or without capacitor
Removing withpower off.
1: disassemble the 10 screws (A) take off
the cover.
3: disassemble the 8 screws (C) securing
the fan to the cover of compartment (A).
2: disconnect the wires (D) mark the wires
when disassembling.
Replacing the capacitor
With power off.
Remove the roof plate on each cubicle
(6 screws).
Schneider Electric
To acc the capacitor.
07897302EN indice: C0 - 41
Corrective maintenance
Mark the wiring and disconnect (A).
Putting back the new
capacitor
Disassemble the nut and washer (B).
Fit the fan and the capacitor (if necessary) in the opposite order to disassembly.
Check on the characteristics label that
the new fan and capacitor match the
rated voltage indicated.
- 5 1237 333FA 220 Vac
- 5 1237 333FB 110 Vac
- 5 1237 333FC 48 VD.
42 - 07897302EN indice: C0
Schneider Electric
Schneider Electric
07897302EN indice: C0 - 43
44 - 07897302EN indice: C0
Schneider Electric
Schneider Electric group service centers are there to provide:
- engineering and technical assistance,
- commissioning,
- training,
- preventive and corrective maintenance,
- adaptation work,
- spare parts.
07897302EN - REV. C0 a Schneider Electric Industries SAS – All rights reserved.
Call your sales representative who will put you in touch with your nearest
Schneider Electric group service center or directly call the following telephone
number: +33 (0)4 76 57 60 60 Grenoble France.
Schneider Electric Industries SAS
89, boulevard Franklin Roosevelt
F-92506 Rueil-Malmaison Cedex
Tel: +33 (0)1 41 29 85 00
www.schneider-electric.com
As standards, specifications and designs change from time to time, please ask for confirmation
of the information given in this publication.
This document has been printed
on ecological paper.
Publishing: Schneider Electric Industries SAS.
Design: Profil.
Printing:
07897302EN - REV. C0
10/2005