Ormazabal velatia cgm.800 Instruction manual

LIB
cgm.800
Medium-voltage switchgear with
integrated insulation in SF
6
gas up to
36 kV in accordance with IEC Standard
with rated current up to 800 A
General Instructions
IG-284-EN, version 03, 06/05/2020

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-284-EN version 03; 06/05/2020 3
General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Contents
Contents
1. General description ...................................................4
1.1. Models ......................................4
1.2. Standards applied............................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. Characteristics table .........................9
1.5. Dimensions and weights ....................10
1.6. Operating conditions .......................11
2. Handling and transport...........................................12
2.1. Lifting means ...............................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. Recommended cable connection trenches...17
4.4.1. Cubicles with internal arc in tank up to
20 kA - 0.5 s .................................17
4.4.2. Cubicles with classification of internal arc
IAC up to 25 kA - 1 s .........................20
4.5. Fastening to the floor .......................24
4.5.1. Fastening to the floor on profile .............24
4.5.2. Fastening to the floor by anchoring..........25
4.6. Connecting the cubicles.....................28
4.7. Earthing the switchgear .....................28
4.8. Cable connections ..........................29
4.8.1. Horizontal front connection ................30
4.8.2. Cable connection in fuse protection
function 1400 mm high .....................32
5. Recommended sequence of operations.................34
5.1. Checking the gas pressure ..................34
5.2. Live voltage indicator .......................35
5.3. Phase concordance check ...................36
5.4. Feeder function .............................37
5.4.1. Mimic diagram..............................37
5.4.2. Actuating levers ............................37
5.4.3. Opening operation from earthing position...38
5.4.4. Switch closing operation from open
position ....................................39
5.4.5. Opening operation from closed position.....40
5.4.6. Earthing operation from the open position ..41
5.4.7. Cable test...................................42
5.5. Fuse protection function ....................43
5.5.1. Mimic diagram..............................43
5.5.2. Actuating lever .............................43
5.5.3. Opening operation from earthing position ..44
5.5.4. Spring charge operation and closing of the
switch-disconnector from isolating position .45
5.5.5. Opening operation from switch-disconnector
closed position .............................46
5.5.6. Earthing operation from open position ......47
5.6. Fuse replacement sequence .................48
5.6.1. Selection of recommended fuses ............52
5.7. Circuit-breaker function with AV/RAV
driving mechanism .........................53
5.7.1. Mimic diagram..............................53
5.7.2. Spring charge and actuating levers ..........54
5.7.3. Opening operation from earthing position...54
5.7.4. Closing operation from isolating position ...56
5.7.5. Opening operation from closed position.....58
5.7.6. Earthing operation from open position ......60
6. Safety elements........................................................62
6.1. Acoustic earthing prevention alarm .........62
6.2. Interlocks ...................................62
6.2.1. Locking with a padlock......................63
6.2.2. Locking with a lock..........................63
7. Maintenance.............................................................64
7.1. Live voltage indicator test ...................64
7.2. Acoustic earthing prevention alarm test .....65
7.3. Specific maintenance for the cgm.800-v
cubicle .....................................66
8. Spares and accessories ............................................67
9. Environmental information ....................................69

IG-284-EN version 03; 06/05/2020
4
General description General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
1. General description
[2] Further information at www.ormazabal.com.
Ormazabal's cgm.800 system, designed in accordance with
the requirements set out in standards of the International
Electrotechnical Committee (IEC), is formed by dierent
unifunctional switchgear models, with full insulation in SF6
gas, thus allowing dierent secondary electrical distribution
schematics to be congured in medium voltage up to
36 kV[2].
1.1. Models
Unifunctional switchgear Function
cgm.800-l Feeder
cgm.800-p Protection with fuses
cgm.800-v Vacuum circuit-breaker
cgm.800-rc Cable rise
cgm.800-ma Metering and auxiliary services
Table 1.1. cgm.800 system models
1.2. Standards applied
Standard Description
IEC 62271-1 Common specications for high voltage switchgear standards.
IEC 62271-100 High-voltage alternating current circuit-breakers.
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 62271-105 Alternating current fuse-switch combinations.
IEC 62271-200 Alternating current metal-enclosed switchgear for rated voltages above 1 kV and up to and including 52 kV.
IEC 62271-206/IEC 61243-5 Voltage presence indicating systems.
IEC60529 IP ratings for enclosures.
IEC 60282-1 Current-limiting fuses.
Table 1.2. Standards applied

IG-284-EN version 03; 06/05/2020 5
General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
General description
1.3. Main components
1Gas tank
1.1 Side connection female bushings
2Driving mechanism area
2.1 Name plate
2.2 Operating sequence plate
2.3 Actuating shafts (see mimic diagram of each model)
2.4 ekor.vpis/ekor.ivds
live voltage detector*
2.5 ekor.sas acoustic earthing prevention alarm unit*
3Base
3.1 Cable compartment access cover
3.2 Medium-voltage cable xing bracket
3.3 Gas relief compartment
3.4 Earth collector
3.5 Front cable connection bushings
* Optional components.
Figure 1.1. Main elements of cgm.800 cubicles

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General description General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
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 relief device to facilitate gas
relief in the event of 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 62271-1.
Figure 1.2. Gas tank for cgm.800-l
1.3.2. Driving mechanism compartment
This is the compartment in which the switch-disconnector,
earthing switch or circuit-breaker is driven, 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 driving elements.
The cgm.800 system has, in line with the cubicle model, the
following types of driving mechanism:
BToggle l
BM Motorised tilting l, v
B2M Toggle with double motorisation l, v
BR-A Accumulation of energy with retention p
BR-AM Accumulation of energy with latch and motorisation l, p
BR-A2M Accumulation of energy with retention and double motorisation l, p
AV Circuit-breaker without reclosing v
AMV Motorised circuit-breaker without reclosing v
RAV Circuit-breaker with reclosing option v
RAMV Motorised circuit-breaker with reclosing option v
Table 1.3. Types of driving mechanisms
These elements are operated independently, i.e. their
actuation speed does not depend on the speed of the
manual operation.
B, BM, B2M, BR-A, BR-AM and BR-A2M driving mechanisms
can be replaced by upgrading in any of the three possible
positions (closed-opened-earthed). While the driving
mechanism is withdrawn, these positions of the switch can
be blocked using a coupling device, whether in service or
not.

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General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
General description
1.3.3. Base
Made up of the cable compartment and the gas relief
compartment:
Cable compartment
This is located in the bottom front section of the cubicle
and has a cover interlocked with the earthing switch, thus
allowing front access to the medium-voltage cables.
As standard, it is designed to contain up to:
• Two shielded screw-in terminals (reduced) per phase
or one terminal (reduced) plus surge arrester (reduced)
with space for the corresponding incoming power
cables.
• Cable ties for the power cables.
• Earthing bars.
As an option:
• Two symmetric terminals or symmetric terminal plus
symmetric surge arrester.
• Metallic voltage transformers.
Figure 1.3. Cable compartment
Gas relief compartment
Ormazabal's cgm.800 is designed and constructed to
withstand at least the thermal and dynamic eects of an arc
of 16 kA for 0.5 seconds should a defect result in an internal
arc in the gas compartment. The system conducts the gases
generated in a fully controlled manner to avoid any possible
injury to people in the equipment operation area.
Optionally, a chimney can be positioned in the rear
of the cubicle to redirect the gases to the top section.
Please check with Ormazabal.

IG-284-EN version 03; 06/05/2020
8
General description General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
1.3.4. Name plate
Every unit includes a name plate, with some of the following
data:
Figure 1.4. Example of name plate
Name plate
N° Cubicle serial number*
Type Ormazabal cubicles system.
Designation Cubicle model
Standard Standards applied to the equipment
Name Equipment name
UrEquipment rated voltage (kV)
UpLightning impulse withstand voltage (kV)
UdPower frequency withstand voltage (kV)
frEquipment rated frequency (Hz)
IrEquipment rated current (A)
Instructions Manual General Instructions Manual (IG) for the system
Class Driving mechanism class according to IEC 62271-103
NNumber of mainly active load breaking operations
Ik/IpShort-time withstand current/short-time withstand peak value
tkShort-time withstand current time
Pre Gas pressure inside the gas tank (MPa)
Pme Minimum operating gas pressure (MPa)
SF6Insulating uid mass (kg)
CO2eEquivalent CO2uid mass (t)
Year Year of manufacture
TC Minimum working temperature
IAC Internal arc classication
* In the event of incident, this number should be reported to Ormazabal.
Table 1.4. Name plate

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General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
General description
1.4. Characteristics table
Rated voltage [kV] 24 36
Frequency [Hz] 50 60 50 60
Rated current [A]
Busbars and cubicle interconnection 800
Feeder 800
Transformer output 200
Rated short-time withstand current [kA]
With tk= 1 s 20*/25
With tk= 3 s 25
Peak value 40/50/62.5 41.6/52/65 40/50/62.5 41.6/52/65
Rated insulation level [kV]
Rated power frequency withstand voltage (1min) 50/60 70/80
Rated lightning impulse withstand voltage 125/145 170/195
Internal arc in tank
Front accessibility 20*/25 kA (0.5 s)
Front and side accessibility 20*/25 kA (1 s)
Front, side and rear accessibility** 20*/25 kA (1 s)
Internal arc classication according to IEC 62271-200
IAC AF/AFL 20*/25 kA (1 s)
IAC AFLR 20*/25 kA (1 s)
Degree of protection: Gas tank IP X8
Degree of protection: External enclosure IP 2XD
Standard unit colour [RAL] 7016/7001
Category of loss of service continuity [LSC] LSC2
Compartmenting class PM
* Tests conducted with current 21 kA/54.6 kA
** With upwards gas relief via the duct.
Table 1.5. Characteristics
The values set out in this table are general for the
cgm.800 system and are only valid when conrmed
by Ormazabal. Some cubicle models can withstand
partial values. For more detailed information, check
the table for each cubicle model in Ormazabal's
CA-126 catalogue.

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10
General description General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
1.5. Dimensions and weights
Figure 1.5. Dimensions cgm.800
Cubicle Width (a)
[mm]
Depth (f)
[mm]
Height (h)
[mm]
Bushings height (g)
[mm]
Cable fastening height (l)
[mm]
Weight
[kg]
-l 418 850[1] 1400[1] 697 234 147
1745 1042 580 162
-p 480 1010 1400[1]
180 - 128 215
1745 230
-v 600[2] 850 1400[1] 350 20 240
1745 695 282 255
-rci
-rcd 367 831 1745 1590 1087 42
-ma 595 1028 1800 - - 125
[1] Only available for cubicles with IAC rating up to 21 kA-1 s. For other options, check with Ormazabal.
[2] In the case of double symmetrical terminal, the switchgear is an extra 80 mm deep.
Table 1.6. Dimensions and weights

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General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
General description
1.6. Operating conditions
Installation Indoor
Maximum ambient temperature + 40 °C
Minimum ambient temperature - 5 °C/- 30 °C*
Maximum average ambient temperature, measured over a 24-hour period + 35ºC
Maximum mean relative humidity, measured over a 24-hour period < 95%
Maximum mean relative humidity, measured over a 1-month period < 90%
Maximum mean vapour pressure, measured over a 24-hour period 2.2 kPa
Maximum mean vapour pressure, measured over a 1-month period 1.8 kPa
Maximum height above sea level 2000 m
Solar radiation Negligible
Ambient air pollution (dust, smoke, corrosive and/or ammable gases, vapours or salt) Insignicant
Vibrations caused by causes external to the switchgear or by seismic movements Insignicant
* Storage: - 40 °C.
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".
For special service conditions: ambient temperature
above +40ºC, installation between 2000 and 4000 m
above sea level, signicant pollution level, or others
dierent to those described, check with Ormazabal.

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12
Handling and transport General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
2. Handling and transport
[3] Position the rear of the cubicle facing the driver, to avoid damaging the front.
Important: During transport, the switchgear must
be perfectly seated and xed so that it cannot move
about and possibly damage the equipment.
2.1. Lifting means
The switchgear 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 cgm.800 functional
units, one of the following methods must be used:
1. Using a forklift truck or hand-operated pallet
truck.[3]
Figure 2.1. Lifting a cgm.800 modular cubicle using a fork-lift truck.
2. Lifting using slings or chains xed to the lifting brackets
on the sides of the top of the cubicle. The angle of pull
should be as vertical as possible (with an angle greater
than 60º from the horizontal).
Figure 2.2. Lifting a cgm.800 modular cubicle with chains.

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General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Handling and transport
3. If it is not possible to use the aforementioned methods,
rollers may be used underneath the switchgear. Another
option is to slide the cubicles over rods (these same
rods can be used to help get over the cable trench).
4. To handle the series of ve functional cgm.800 units
(coupled modules), use lifting systems (slings, lifting
beam, etc.) with a pull angle greater than 65º and less
than 115º, in order to prevent possible damage to the
cubicles during hoisting.
The use of lifting beams is required for cubicle
assemblies with control boxes As the sole exception,
slings may be used if the cubicles of the assembly have
control boxes of identical height installed.
Figure 2.3. Lifting a cgm.800 assembly with ve functional units
Figure 2.4. Lifting a set of cgm.800 functional units with a forklift truck.

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14
Storage General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
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 3.1. Storage
Storage must always be INDOORS, with the following
conditions recommended:
1. Ambient air temperature should not exceed 40 ºC
and its mean value, measured in a period of 24 hours,
must not exceed 35 ºC.
2. The ambient air temperature should not drop below
- 5 °C. There are also cubicles with storage temperature
up to - 40 °C.
3. The switchgear must be protected from direct solar
radiation.
4. Altitude, both in transport and in storage, must not
exceed 2000 m.
5. The environmental air must not have any signicant
contamination from dust, smoke, corrosive and/or
inammable gases, vapours or salt.
6. The switchgear must be protected from the rain, and
the humidity conditions should be as follows:
a. The mean relative humidity value, measured over a
period of 24 hours, must not exceed 95%.
b. The mean water steam pressure value, measured in
a period of 24 hours, must not exceed 2.2 kPa.
c. The mean relative humidity value, measured over a
period of one month, must not exceed 90%.
d. The mean water steam pressure value, measured
over a period of one month, must not exceed
1.8 kPa.
7. During transport, vibrations caused by external factors
or seismic movements must be insignicant.
Any other conditions must be notied beforehand,
since the equipment must be factory-adjusted to the
atmospheric pressure. Otherwise, the needle may
indicate an incorrect value (red scale), even though
the value of the equipment internal pressure is correct.
Otherwise, the manometer needle may indicate
an incorrect value, even if the equipment's internal
pressure is correct.

IG-284-EN version 03; 06/05/2020 15
General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
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 cgm.800 system switchgear is supplied as standard
protected by plastic packaging.
On receiving the equipment, check that the goods supplied
correspond to the order and associated documentation. If
this is not the case, contact Ormazabal immediately.
The disassembly process for the equipment is as follows:
1. Using a blade, cutter or similar tool, cut the cellophane
the cubicle is wrapped in.[4]
2. Completely remove 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 rear or on top
of the cubicle.
7. Remove the self-adhesive protective plastic from the
cable compartment cover.
The self-adhesive plastic must be removed from the
cable compartment cover so that the equipment
enclosure's earth connection may have the proper
electrical continuity.
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
damaged, contact Ormazabal immediately.
4.2. Location of accessories during transport
A number of accessories are supplied with the cubicles,
located as indicated in the gures below:
Figure 4.1. Location of accessories in cgm.800-p cubicles Figure 4.2. Location of accessories in cgm.800-l and cgm.800-vcubicles

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Installation General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Depending on the cubicle model, the accessory box
contains some of the following items:
• Ormazabal's IG-284 General Instructions document
• Actuating lever
• Spring charge lever
• Cubicle connecting kit:
-ormalink
- Springs
- Syntheso grease
- Earthing bar
[5] For any questions, please ask Ormazabal.
• 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 roof which must
be maintained in the facility are as follows:
Figure 4.3. Minimum installation distances
Minimum distances [mm]
Side wall (a) 100
Ceiling (b) Height 1400 mm 600
Height 1745 mm 550
Front clearance (c) 500*
Function Rear wall (d)**
cgm.800-l/-v/-rc 100/160***
cgm.800-p/-ma**** 0
* An operating clearance of 1000 mm is recommended.
(**) Cubicles with classication IAC AFLR: d = 800 mm.
*** Combined schematics with cubicles p.
**** -ma cubicles with classication IAC 21 kA 1 s; d = 150
Table 4.1. Minimum distances
The measurements indicated in the table have been
obtained in accordance with the dimensions of the
test room for the gas insulated modules, in accordance
with Annex AA of Standard IEC 62271-200.
The space required to extend the assembly with an
additional cubicle is 250 mm plus the width of the new
cubicle.[5]

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General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Installation
4.4. Recommended cable connection trenches
[6] In each case, bear in mind which cable is to be used in the particular installation.
[7] Tests carried out with a test current of 21 kA.
Minimum recommended dimensions based on the trench
dimensions used in the tests in accordance with Standard
IEC 62271-200. These dimensions may vary in accordance
with the radius of curvature of the cables used.[6]
4.4.1. Cubicles with internal arc in tank up to 20 kA[7] - 0.5 s
Feeder and cable rise function
The dimensions of the trench depend on the minimum
radius of curvature of the cables used.
Front and rear cable input or output (D1)
Side cable input or output (D2)
Figure 4.4. Dimensions [mm] of the cable trench for cgm.800-l and
cgm.800-rc
Trench necessary for the feeder and cable rise function
Cable data Approximate
radius of
curvature*
[mm]
Minimum depth
Cable insulation Cable type Cable section
[mm2]
Cable diameter
[mm]
D1
[mm]
D2
[mm]
Dry insulation Single-phase
< 150 41 555 200 500
185 43 590 200 550
240 45.2 640
300 47.5 685 300 660
400 48 745
500 54.5 820 350 750
Three-phase < 150 92.7 805 650 650
* Check against the data of the manufacturer of the cable used.
Table 4.2. Trench necessary for the feeder and cable rise function

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Installation General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Fuse protection function
Front and rear cable input or output (D1)
Side cable input or output (D2)
Figure 4.5. Dimensions [mm] of the cable trench for cgm.800-p
Trench necessary for the fuse protection function
Cable data Approximate
radius of
curvature*
[mm]
Minimum depth
Cable insulation Cable type Cable section
[mm2]
Cable diameter
[mm]
D1
[mm]
D2
[mm]
Dry insulation Single-phase
< 50 35 430 500 500
70 36.5 460 550 550
95 38 500
150 41 555 600 600
Three-phase < 95 86 735 1050 1050
* Check against the data of the manufacturer of the cable used.
Table 4.3. Trench necessary for the fuse protection function

IG-284-EN version 03; 06/05/2020 19
General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
Installation
Circuit-breaker function with AV/RAV driving mechanism
Front and rear cable input or output (D1)
Side cable input or output (D2)
Figure 4.6. Dimensions [mm] of the cable trench for cgm.800-v with AV/
RAV driving mechanism.
Trench necessary for the circuit-breaker with AV/RAV driving mechanism function
Cable data Approximate
radius of
curvature*
[mm]
Minimum depth
Cable insulation Cable type Cable section
[mm2]
Cable diameter
[mm]
D1
[mm]
D2
[mm]
Dry insulation Single-phase
< 150** 41 555 400 400
185 43 590 400 500
240 45.2 640
300 47.5 685 500 600
400 48 745
500 54.5 820 600 650
Three-phase < 150 92.7 805 850 850
* Check against the data of the manufacturer of the cable used.
** 150 mm2cable valid up to 21 kA.
Table 4.4. Trench necessary for the circuit-breaker with AV/RAV driving mechanism function

IG-284-EN version 03; 06/05/2020
20
Installation General Instructions
cgm.800: Medium-voltage switchgear with integrated insulation in SF6gas
up to 36 kV in accordance with IEC Standard with rated current up to 800 A
4.4.2. Cubicles with classification of internal arc IAC up to 25 kA - 1 s
[8] In each case, bear in mind which cable is to be used in the installation.
Feeder and cable rise function
Front and rear cable input or output (D1)
Side cable input or output (D2)
Figure 4.7. Dimensions [mm] of the cable trench for cgm.800-l and
cgm.800-rc
Trench necessary for the feeder and cable rise function
Cable data Approximate
radius of
curvature*
[mm]
Minimum depth
Cable insulation Cable type
Cable
section
[mm2]
Cable
diameter
[mm]
D1
[mm]
D2
[mm]
Height
1400 mm*** Dry insulation Single Core
< 150** 41 555 500 800
185 43 590 550 900
240 45.2 640
300 47.5 685 650 1000
400 48 745
500 54.5 820 700 1100
Three-core < 150 92.7 805 950 950
Height
1745mm Dry insulation Single Core
< 150** 41 555 370 500
185 43 590 370 550
240 45.2 640
300 47.5 685 370 660
400 48 745
500 54.5 820 370 750
Three-core < 150 92.7 805 650 650
* Check against the data of the manufacturer of the cable used.
** 150 mm2cable valid up to 21 kA.
*** Exclusively for cgm.800-l 21 kA-1 s cubicles.
Table 4.5. Trench necessary for the feeder, busbar rise and cable rise function