Ormazabal cgmcosmos-l Instruction manual

LIB
cgmcosmos system
Medium voltage switchgear and control
gear, fully insulated in SF
6
gas up to 24 kV
with external cable test device
Synergrid AA10
General instructions
IG-297-EN, version 01, 06/02/2020

In view of the constant evolution in standards and design, the characteristics of the elements contained in this manual are subject
to change without prior notice. These characteristics, as well as the availability of components, are subject to confirmation by
Ormazabal.
CAUTION!
When medium-voltage equipment is operating, certain components are live, other parts may be in movement and some may
reach high temperatures. Therefore, the use of this equipment poses electrical, mechanical and thermal risks.
In order to ensure an acceptable level of protection for people and property, and in compliance with applicable environmental
recommendations, Ormazabal designs and manufactures its products according to the principle of integrated safety, based on
the following criteria:
• Elimination of hazards wherever possible.
• Where elimination of hazards is neither technically nor economically feasible, appropriate protection functions are
incorporated in the equipment.
• Communication about remaining risks to facilitate the design of operating procedures which prevent such risks,
training for the personnel in charge of the equipment, and the use of suitable personal protective equipment.
• Use of recyclable materials and establishment of procedures for the disposal of equipment and components so
that once the end of their service lives is reached, they are duly processed in accordance, as far as possible, with the
environmental restrictions established by the competent authorities.
Consequently, the equipment to which the present manual refers complies with the requirements of section 11.2 of Standard
IEC 62271-1. It must therefore only be operated by appropriately qualified and supervised personnel, in accordance with the
requirements of standard EN 50110-1 on the safety of electrical installations and standard EN 50110-2 on activities in or near
electrical installations. Personnel must be fully familiar with the instructions and warnings contained in this manual and in other
recommendations of a more general nature which are applicable to the situation according to current legislation[1].
The above must be carefully observed, as the correct and safe operation of this equipment depends not only on its design but also
on general circumstances which are in general beyond the control and responsibility of the manufacturer. More specifically:
• The equipment must be handled and transported appropriately from the factory to the place of installation.
• All intermediate storage should occur in conditions which do not alter or damage the characteristics of the equipment
or its essential components.
• Service conditions must be compatible with the equipment rating.
• The equipment must be operated strictly in accordance with the instructions given in the manual, and the applicable
operating and safety principles must be clearly understood.
• Maintenance should be performed properly, taking into account the actual service and environmental conditions in
the place of installation.
The manufacturer declines all liability for any significant indirect damages resulting from violation of the guarantee, under any
jurisdiction, including loss of income, stoppages and costs resulting from repair or replacement of parts.
Warranty
The manufacturer guarantees this product against any defect in materials and operation during the contractual period. In the
event that defects are detected, the manufacturer may opt either to repair or replace the equipment. Improper handling of this
equipment and its repair by the user shall constitute a violation of the guarantee.
Registered Trademarks and Copyrights
All registered trademarks cited in this document are the property of their respective owners. The intellectual property of this manual
belongs to Ormazabal.
[1] For example, in Spain the “Regulation on technical conditions and guarantees for safety in high-voltage electrical installations” – Royal Decree
337/2014 is obligatory.

IG-297-EN version 01; 06/02/2020 3
General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Contents
In view of the constant evolution in standards and design, the characteristics of the elements contained in this manual are subject
to change without prior notice. These characteristics, as well as the availability of components, are subject to confirmation by
Ormazabal.
CAUTION!
When medium-voltage equipment is operating, certain components are live, other parts may be in movement and some may
reach high temperatures. Therefore, the use of this equipment poses electrical, mechanical and thermal risks.
In order to ensure an acceptable level of protection for people and property, and in compliance with applicable environmental
recommendations, Ormazabal designs and manufactures its products according to the principle of integrated safety, based on
the following criteria:
• Elimination of hazards wherever possible.
• Where elimination of hazards is neither technically nor economically feasible, appropriate protection functions are
incorporated in the equipment.
• Communication about remaining risks to facilitate the design of operating procedures which prevent such risks,
training for the personnel in charge of the equipment, and the use of suitable personal protective equipment.
• Use of recyclable materials and establishment of procedures for the disposal of equipment and components so
that once the end of their service lives is reached, they are duly processed in accordance, as far as possible, with the
environmental restrictions established by the competent authorities.
Consequently, the equipment to which the present manual refers complies with the requirements of section 11.2 of Standard
IEC 62271-1. It must therefore only be operated by appropriately qualified and supervised personnel, in accordance with the
requirements of standard EN 50110-1 on the safety of electrical installations and standard EN 50110-2 on activities in or near
electrical installations. Personnel must be fully familiar with the instructions and warnings contained in this manual and in other
recommendations of a more general nature which are applicable to the situation according to current legislation[1].
The above must be carefully observed, as the correct and safe operation of this equipment depends not only on its design but also
on general circumstances which are in general beyond the control and responsibility of the manufacturer. More specifically:
• The equipment must be handled and transported appropriately from the factory to the place of installation.
• All intermediate storage should occur in conditions which do not alter or damage the characteristics of the equipment
or its essential components.
• Service conditions must be compatible with the equipment rating.
• The equipment must be operated strictly in accordance with the instructions given in the manual, and the applicable
operating and safety principles must be clearly understood.
• Maintenance should be performed properly, taking into account the actual service and environmental conditions in
the place of installation.
The manufacturer declines all liability for any significant indirect damages resulting from violation of the guarantee, under any
jurisdiction, including loss of income, stoppages and costs resulting from repair or replacement of parts.
Warranty
The manufacturer guarantees this product against any defect in materials and operation during the contractual period. In the
event that defects are detected, the manufacturer may opt either to repair or replace the equipment. Improper handling of this
equipment and its repair by the user shall constitute a violation of the guarantee.
Registered Trademarks and Copyrights
All registered trademarks cited in this document are the property of their respective owners. The intellectual property of this manual
belongs to Ormazabal.
[1] For example, in Spain the “Regulation on technical conditions and guarantees for safety in high-voltage electrical installations” – Royal Decree
337/2014 is obligatory.
Contents
1. General description ...................................................4
1.1. Models ......................................4
1.2. Applicable standards.........................4
1.3. Main components ...........................5
1.3.1. Gas tank .....................................6
1.3.2. Driving mechanism compartment ............6
1.3.3. Base .........................................7
1.3.4. Name plate ..................................8
1.4. Electrical specifications......................10
1.5. Dimensions and weights ....................11
1.6. Operating conditions .......................11
2. Handling and transport service..............................12
2.1. Lifting methods.............................12
3. Storage......................................................................14
4. Installation ...............................................................15
4.1. Unpacking the equipment ..................15
4.2. Location of accessories during transport .....15
4.3. Minimum installation distances..............16
4.4. Incoming cable pits recommended..........17
4.5. Fastening to the floor .......................19
4.5.1. Floor fastening on a profile ..................19
4.5.2. Anchoring to the floor ......................20
4.6. Connecting the cubicles.....................22
4.7. Earthing the switchgear and
control gear assembly.......................22
4.8. Cable connections ..........................22
4.8.1. Horizontal front connection .................25
5. Recommended sequence of operations.................27
5.1. Checking the gas pressure ..................27
5.2. Feeder function .............................28
5.2.1. Mimic diagram..............................28
5.2.2. Actuating levers ............................28
5.2.3. Isolating operation from the
earthing position ...........................29
5.2.4. Switch closing operation from
the open position ...........................30
5.2.5. Isolation operation from the
connected position .........................31
5.2.6. Earthing operation from the
isolating position ...........................32
5.2.7. Cable test...................................33
5.3. Fuse protection function with
AR driving mechanism ......................35
5.3.1. Mimic diagram..............................35
5.3.2. Actuating levers ............................36
5.3.3. Opening operation from earthing position...36
5.3.4. Connecting operation from
the isolating position........................37
5.3.5. Opening operation from closed position.....37
5.3.6. Earthing operation from isolating position ...38
5.4. Fuse replacement sequence .................39
5.4.1. Selecting recommended fuses ..............43
6. Safety elements........................................................44
6.1. Interlocks ...................................44
6.1.1. Locking with a padlock......................44
6.1.2. Locking with a lock..........................45
7. Maintenance.............................................................47
8. Spares and accessories ............................................48
9. Environmental Information ....................................49

IG-297-EN version 01; 06/02/2020
4
General description General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
1. General description
[2] More information in www.ormazabal.com
The Ormazabal cgmcosmos system with external test
cable device is designed according to the requirements
indicated by the regulations of the International
Electrotechnical Commission (IEC), it is composed of
various models of single and multi-functional switchgear,
fully insulated in SF6gas, to congure dierent diagrams
of secondary electrical distribution in medium voltage to
24 kV[2].
1.1. Models
Single-functional switchgear and control gear Function
cgmcosmos-l Feeder (K)
cgmcosmos-p Fuse protection (T)
Table 1.1. Single-functional switchgear and control gear
Multi-functional switchgear and control gear Functions
cgmcosmos-2lp Two feeder functions and one fuse protection function (KTK)
Table 1.2. Multi-functional switchgear and control gear
1.2. Applicable standards
Standard Description
IEC 62271-1 Common specications for high-voltage switchgear and controlgear standards
IEC 62271-102 Alternating current disconnectors and earthing switches
IEC 62271-103 High voltage switches for rated voltages above 1 kV up to and including 52 kV
IEC 62271-200 A.C. metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
IEC 61243-5/62271-206 Voltage presence indicating systems
IEC 60529 Degrees of protection provided by enclosures (IP Code)

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General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
General description
1.3. Main components
1Gas tank
1.1 Female bushings (spigots) for side connection
2Driving mechanism area
2.1 Name plate
2.2 Operating sequence plate
2.3 Actuation shafts (see mimic plan for each model).
2.4 LRM-VDS system according to NBN EN 61243-5
3Base
3.1 Cable compartment access cover
3.2 Cable test compartment access cover
3.3 Medium voltage cable xing support
3.4 Gas relief compartment
3.5 Earth collector
3.6 Front cable connection bushings
Figure 1.1. Main components of cgmcosmos cubicles

IG-297-EN version 01; 06/02/2020
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General description General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
1.3.1. Gas tank
Sealed compartment which houses the busbar and the
switching and breaking elements, where the insulating
medium is SF6.
Each gas tank has a pressure-releasing device to allow gases
to escape in the event of an internal arc.
Thanks to the hermetically-sealed nature of the gas
tank containing all the medium voltage elements, the
equipment is expected to have a minimum service life
of 30 years, without replenishing the gas according to
standard IEC 62272-1.
Figure 1.2. Tank of gas SF6for function “l”
1.3.2. Driving mechanism compartment
This is the compartment in which the switch-disconnector
or the circuit-breaker is actuated, depending on the type of
function.
The mimic diagram for the main medium voltage circuit
is displayed on the cover of this compartment. The mimic
diagram includes all the position indicators for the actuators.
The cgmcosmos system has, depending on the cubicle
model, the following types of driving mechanism:
BTilting l
BM Motorised tilting l
AR p, 2lp
ARM p, 2lp
Table 1.3. Types of driving mechanism
These elements are operated independently, i.e., their
actuation speed does not depend on the speed of the
manual operation.
Driving mechanisms B and BM can be replaced (due to
improved characteristics) in any of their three positions
(connected - disconnected - earthed). While the driving
mechanism is removed, these switch positions can be
blocked by a coupling device whether the function is in
service or not.

IG-297-EN version 01; 06/02/2020 7
General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
General description
1.3.3. Base
Made up of the cable test compartment, the cable
compartment and the gas relief compartment:
Cable test compartment
This is located in the top front section of the base and has
a cover interlocked with the earthing switch, thus allowing
front access to the three medium voltage cable test
connection pistons.
Figure 1.3. Cable test compartment
Cable compartment
This is located in the lower front section of the cubicle, thus
allowing front access to the medium voltage cables.
As standard, it is designed to contain up to:
• 2 shielded screw-in terminals (small version) per phase or
one terminal (small version) plus a surge arrester (small
version) with space for the corresponding incoming
power cables.
• Cable clamps for the medium-voltage cables.
• Earthing bars.
Figure 1.4. Cable compartment
Gas relief compartment
This is located in the lower rear section of the base. In
the event of an internal arc, the gases produced are sent
downwards and to the rear, in functions without IAC rating,
and in no way aecting any persons, cables, or the rest of
the installation switchgear.

IG-297-EN version 01; 06/02/2020
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General description General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
1.3.4. Name plate
Figure 1.5. Example of name plate
No. Cubicle serial number*
Type Ormazabal cubicle system.
Designation Cubicle model
Standard Regulations applied to the equipment
Name Equipment name
Ur Equipment rated voltage (kV)
Up Lightning impulse withstand voltage (kV)
Unit Power frequency withstand voltage (kV)
fr Equipment rated frequency (Hz)
Ir Equipment rated current (A)
Manual of instructions Manual of General Instructions (IG) corresponding to the system
Class Driving mechanism class according to IEC 62271-103
nNumber of mainly active load breaking operations
Ik / Ip Short-time withstand current/Short-time withstand peak value
tk Short-time withstand current time
Pre Gas pressure inside the gas tank (MPa)
Pme Minimum operating gas pressure (MPa)
SF6 Weight of insulating uid (g)
Year Year of manufacture
TC Minimum service temperature
IAC Internal Arc Classication
* In the event of incident, the serial number should be quoted to Ormazabal
Table 1.4. Name plate

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General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
General description
In addition, another plate into the operation area of each
mechanism is also included with some of the following
data:
Figure 1.6. Mimic diagram plate

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General description General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
1.4. Electrical specifications
Rated voltage [kV] 12 24
Frequency [Hz] 50 60 50 60
Rated current [A]
Busbars and cubicle interconnection 400/630
Feeder 400/630
Rated short-time withstand current [kA]
Con tk= (x) s 20** (1/3 s)
Peak value 52**
Rated insulation level [kV]
Power frequency rated withstand voltage (1 min) 28/32 50/60
Lightning impulse rated withstand voltage 75/85 125/145
Internal arc classication in accordance with IEC 62271-200
IAC AF/AFL 20** kA (1 s)
IP rating: gas tank IP X8 IP X8
IP rating: external enclosure IP 2XD IP 2XD
Standard unit colour (RAL) grey 7035 / blue 5005 grey 7035 / blue 5005
Category of loss of service continuity [LSC] LSC2 LSC2
Compartmentalisation class PM PM
** Tests conducted at current 21 kA/52.5 kA (50 Hz) – 54.6 kA (60 Hz).
Table 1.5. Electrical specications
The values set out in this table are general for the
cgmcosmos system and are only valid when conrmed
by Ormazabal. Some cubicle models can withstand
partial values. For more detailed information, please,
check with Ormazabal.

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General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
General description
1.5. Dimensions and weights
Figure 1.7. cgmcosmos dimensions
Module
Height
(h)
[mm]
Width
(a)
[mm]
Depth
(f)
[mm]
Bushings
height
(g)
[mm]
Weight
[kg]
l1450 333 845 600 110
p1450 470 735 560 150
2lp 1450 1136 845 560 390
Table 1.6. Dimensions and weights
1.6. Operating conditions
Installation Indoor
Maximum ambient temperature + 40 °C(a)
Minimum ambient temperature - 5 / - 30 °C(b)
Maximum average ambient temperature, measured over a 24-hour period + 35 °C
Maximum average relative humidity, measured over a 24-hour period < 95%
Maximum average vapour pressure, measured over a 24-hour period 22 mbar
Maximum average vapour pressure, measured over a 1-month period 18 mbar
Maximum height above sea level 2000 m(c)
Solar radiation Negligible
Contamination from corrosive and/or inammable gases Insignicant
Vibrations caused by external factors to the switchgear and control gear Negligible
For special operating conditions (maximum ambient temperature greater than - 40 °C), please ask Ormazabal.
Storage - 40 °C.
For higher altitudes ask Ormazabal.
Table 1.7. Operating conditions
The specications refer to the section ‘Normal service
conditions for indoor cubicles’ in the IEC 62271-1
standard ‘Common specications for high-voltage
cubicles’.

IG-297-EN version 01; 06/02/2020
12
Handling and transport service General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
2. Handling and transport service
[3] Position the rear of the cubicle facing the driver, to avoid damaging the front.
During transport, the switchgear and control gear
must be perfectly seated and xed so that it cannot
move about and possibly damage the equipment.
2.1. Lifting methods
The switchgear and control gear must always be kept
upright, directly on the ground or on a pallet depending on
the type of handling involved.
To handle assemblies of up to four cgmcosmos functional
units, one of the following methods must be used:
1. Using forklift truck or pallet truck[3]:
Figure 2.1. Lifting a cgmcosmos cubicle using a fork-lift truck Figure 2.2. Lifting a three functional unit assembly cgmcosmos using a
forklift truck

IG-297-EN version 01; 06/02/2020 13
General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Handling and transport service
2. Raising it using slings or chains xed to the lifting
supports on the sides of the top of the cubicle. The
angle of pull should be as vertical as possible (with an
angle greater than 60° from the horizontal).
Figure 2.3. Lifting cgmcosmos cubicles with chains Figure 2.4. Lifting cgmcosmos cubicles with chains
3. If it is not possible to use the aforementioned methods,
rollers may be used underneath the switchgear and
control gear. Another option is to slide it over rods
(these same rods can be used to help get over the
trench).

IG-297-EN version 01; 06/02/2020
14
Storage General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
3. Storage
If it needs to be stored, the equipment must be placed on
dry ground or on top of damp-proof insulating material, still
in its original packaging.
After prolonged storage, clean all the insulating parts
carefully before commissioning the equipment. The
enclosure should be cleaned with a clean dry lint-free cloth.
Figure 3.5. Detail of storage conditions
Storage should always be INDOORS, with the following
recommended conditions:
1. Ambient air temperature must not exceed 40 °C and its
average value measured over a 24 h period must not
exceed 35 °C.
2. Ambient air temperature must not drop below - 5 °C.
Cubicles with storage temperature up to - 40 °C are also
available.
3. The switchgear must be protected from direct sunlight.
4. The altitude will be no higher than 1000 m.
5. The ambient air must not be signicantly polluted by
dust, smoke, corrosive and/or ammable gases vapours
or salt.
6. The switchgear must be protected from rain and the
humidity conditions are as follows:
- Average relative humidity value, measured in a 24 hour
period, must not exceed 95%.
- Average steam pressure value, measured in a 24 hour
period, must not exceed 2.2 kPa.
- Average relative humidity value, measured in a
1-month period, must not exceed 90 %.
- Average steam pressure value, measured in a
1-month period, must not exceed 1.8 kPa.
7. During transport, vibrations due to external causes or
seismic movements will be insignicant.
Any other conditions must be notied beforehand,
since the equipment must be factory-adjusted to the
atmospheric pressure at the destination or during
transport. Otherwise, the manometer needle may
indicate an incorrect value, even if the equipment’s
internal gas pressure is correct.

IG-297-EN version 01; 06/02/2020 15
General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Installation
4. Installation
4.1. Unpacking the equipment
[4] It is advisable to cut the cellophane at the rear of the cubicle or at the corner to avoid scratching the surface.
The cgmcosmos system switchgear and control gear comes
wrapped in protective plastic.
On receiving the equipment, check that the goods supplied
correspond to the order and associated documentation. If
this is not the case please contact Ormazabal immediately.
The procedure for unpacking the equipment is as follows:
1. Using a blade, cutter or similar tool, cut the cellophane
wrapped around the cubicle[4].
2. Remove all the cellophane.
3. Detach the white polystyrene corner pieces.
4. Unscrew the xings between the base and the pallet.
5. Remove the pallet, handling the cubicle as indicated in
section 2.1.
6. Unpack the accessory box located at the front or on top
of the cubicle.
7. Remove all the self-adhesive protective plastic from the
cable compartment cover.
8. Dispose of any waste in an environmentally-friendly
manner.
It is advisable to make a visual inspection of the equipment
to check whether it has suered any damage in transit. If so,
contact Ormazabal immediately.
The self-adhesive plastic must be removed from the
cable compartment covers so that the equipment
enclosure’s earth connection may have the proper
electrical continuity.
4.2. Location of accessories during transport
A number of accessories are supplied with the cubicles,
located as indicated:
Figure 4.1. Location of accessories in cgmcosmos compact cubicles in
transport
Figure 4.2. Location of accessories in cgmcosmos modular cubicles in
transport

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Installation General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Depending on the cubicle model, the accessory box
contains some of the following items:
• Ormazabal’s IG-297 general instructions document
• Actuating lever
• Spring-charging lever
• Cubicle connecting kit: ormalink
- Springs
- Syntheso grease
[5] If in doubt, please consult Ormazabal.
- Earthing bar
- End plug kit
- Cubicle end assembly
- Nylon thread
- Plastic plugs
• Side cover
• Floor fastening assembly
4.3. Minimum installation distances
The minimum distances to the walls and ceiling to be
maintained in the installation are as follows:
aSide wall 100
bCeiling 560
cFront clearance 500*
dRear wall 100
* A minimum operation clearance of 1000 mm is recommended.
Figure 4.3. Installation distances [mm]
The above-mentioned measurements have been
obtained in accordance with the dimensions of the test
compartment for gas- insulated modules, according to
annex AA of standard IEC 62271-200.
The space required to extend the assembly with an
additional cubicle is 150 mm plus the width of the new
cubicle[5].

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General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Installation
4.4. Incoming cable pits recommended
[6] For other types of cable sections, please contact Ormazabal.
Recommended minimum dimensions based on the
dimensions of the trench used in the tests according
tostandard IEC 62271-200. Depending on the curvature
radius of the cables these dimensions may vary.
Feeder function
Figure 4.4. Dimensions [mm] of cable trench for cgmcosmos-l
Trench needed for the feeder function [“L” or “T” terminal 400/630 A]
Cable data Guiding
radius of
curvature*
[mm]
Minimum depth
Cable
insulation
Cable
type
Cable
cross-section
[mm2]
Cable
diameter
[mm2]
D2 D4
Dry insulation
Single phase
150 38 500 370 550
185 42 600 400 650
240 42 600 400 650
300 48 750 550 800
400 48 750 550 800
Three phase[6] 150 85 750 600 600
185 85 750 600 600
D2 for front (F) or rear (R) input.
D4 for side input.
* Each cable should be checked against the manufacturer’s data.
Table 4.8. Trench needed for the feeder function
Dimensions in mm.

IG-297-EN version 01; 06/02/2020
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Installation General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Fuse Protection Function
[7] For other types of cable sections, please contact Ormazabal.
Dimensions in mm.
Front and rear cable input or output with straight terminal (D1/D2).
Side cable input or output with straight terminal (D3/D4).
Figure 4.5. Dimensions of cable trench for cgmcosmos-v
Trench necessary for the fuse protection function
Cable data Approximate
radius of
curvature*
[mm]
Minimum depth
Terminals
Cable insulation Cable type
Cable
section
[mm2]
Cable
diameter
[mm2]
Straight
250 A D1
Straight
630 A D3
D1 D3
Height Dry insulation
Single-core
≤ 50 38
500 550
c.
70 38
95 38
150 38
≤ 95 38
c.
Three-core 150 85 750
185 85
* Check against the data of the manufacturer of the cable used.
(c.) Please check with Ormazabal.

IG-297-EN version 01; 06/02/2020 19
General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
Installation
4.5. Fastening to the floor
Before assembling the cubicles, the oor must be carefully
levelled to prevent any deformation which may make
it dicult to connect it to the rest of the cubicles in the
assembly.
The cubicles can be fastened to the oor in two ways:
4.5.1. Floor fastening on a profile
If the oor of the installation is not suciently even, it is
advisable to install the medium voltage cubicle assembly on
an auxiliary prole, to make it easier to connect them. This
prole, which can be supplied to order, must be anchored
to the oor using expansion screws.
aM10 x 25 bolt
b66 x 65 x 4 mm prole
cAnchoring support
Figure 4.6. Location of cubicles on prole

IG-297-EN version 01; 06/02/2020
20
Installation General instructions
cgmcosmos system: Medium voltage switchgear
and control gear, fully insulated in SF6gas up
to 24 kV with external cable test device
4.5.2. Anchoring to the floor
[8] See section “5. Recommended sequence of operations”.
If the oor of the installation is even enough, it is advisable
to install the medium voltage cubicle assembly directly
anchored to the oor.
The sequence for anchoring the cubicles to the oor is as
follows:
1. All the cubicle’s functions must be in the earthing
position[8].
2. In the feeder functions:
a. Remove the cable test compartment cover, using
the central handle on the cover to pull it up and
forward:
Figure 4.7. Removing the cable test compartment access cover
b. Remove the cable compartment cover, using the
central handle on the cover to pull it up and forward:
Figure 4.8. Removing the cable compartment cover