Ormazabal velatia cpg.0 Instruction manual

LIB
cpg.0 (2012)
GIS-type medium-voltage switchgear
with full insulation in gas, up to 38 kV, in
accordance with IEEE Standards
General instructions
IG-196-US, version 02, 19/02/2020

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-196-US version 02; 19/02/2020 3
General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Contents
Contents
1. General description ...................................................4
1.1. Models ......................................4
1.2. Standards applied............................4
1.3. Main components ...........................5
2. Technical characteristics............................................9
2.1. Electrical characteristics ......................9
2.1.1. Name plate .................................11
2.2. Mechanical characteristics ..................12
2.2.1. Dimensions.................................12
2.3. IP rating ....................................13
3. Normal service conditions.......................................14
4. Handling and transport...........................................15
4.1. Transport conditions ........................15
4.2. Lifting means ...............................15
5. Storage......................................................................17
6. Installation ...............................................................18
6.1. Unpacking the equipment ..................18
6.2. List of assembly material supplied ...........18
6.3. Minimum installation distances..............19
6.4. Cable trench ................................20
6.4.1. Recommended dimensions .................20
6.5. Fastening to the floor .......................21
6.6. Connecting cubicles ........................22
6.6.1. cpg.0-v 1200 A and 1600 A ..................23
6.6.2. cpg.0-v 2000 / 2250 A .......................23
6.6.3. cpg.0-c .....................................24
6.6.4. cpg.0-s .....................................24
6.6.5. cpg.0-f .....................................25
6.6.6. cpg.0-rb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
6.7. Equipment grounding ......................26
6.7.1. Top section .................................26
6.7.2. Bottom section .............................27
6.7.3. Side area ...................................27
7. Operation and commissioning sequence ..............28
7.1. Busbar disconnector function operating
sequence (cpg.0-s)..........................28
7.1.1. Up to 1200 A cpg.0-s ........................28
7.1.2. 1600 A / 2000 A / 2250 A cpg.0-s ............30
7.2. Circuit-breaker function operation
sequence (cpg.0-v)..........................33
7.2.1. Operating sequence for cable testing........36
7.3. Busbar coupling function operation
sequence (cpg.0-c)..........................38
7.3.1. Busbar coupling ............................39
7.3.2. Busbar grounding on the right ..............40
7.3.3. Busbar grounding on the left ................42
7.4. Busbar rise function operation sequence
(cpg.0-rb)...................................43
7.5. Fuse protection function operation
(cpg.0-f) ....................................44
7.5.1. Recommended fuses........................46
7.5.2. Transfer currents according
to IEC 62271-105............................46
7.5.3. Fuse replacement sequence ................47
8. Safety elements........................................................52
8.1. ekor.ivds voltage detectors .................52
8.2. Locking with a padlock......................52
8.2.1. Locking with a lock..........................52
8.3. Interlocks ...................................53
9. Maintenance.............................................................54
9.1. Voltage indicator test .......................54
9.2. Preventive maintenance circuit-breakers.....55
10. Spares and accessories ............................................56
11. Environmental information ....................................57
11.1. Sulphur hexafluoride SF6....................57
11.2. Recyclability ................................57

1. General description
The cpg.0 switchgear is made up of a series of GIS-type
cubicles, with complete insulation in gas, for primary
distribution in medium-voltage networks up to 38 kV.
1.1. Models
Model Function
cpg.0-s Busbar disconnector
cpg.0-v Circuit breaker
cpg.0-c Busbar coupling
cpg.0-f Fuse protection
cpg.0-rb Busbar rise
Table 1.1. cpg.0 switchgear models
1.2. Standards applied
Standard Description
CAN CSA C22.2 No. 31 Switchgear assemblies
IEEE C37.74 IEEE Standard Requirements for Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-
Interrupter Switchgear for Alternating Current Systems Up to 38 kV
IEEE C37.20.3 IEEE Standard for Metal-Enclosed Interrupter Switchgear
IEEE 1247 IEEE Standard for Interrupter Switches for Alternating Current, Rated Above 1000 Volts
IEEE C37.123 IEEE Guide to Specications for Gas-Insulated, Electric Power Substation Equipment
IEEE C37.20.4 IEEE Standard for Indoor AC Switches (1 kV-38 kV) for Use in Metal-Enclosed Switchgear
IEEE C37.04 IEEE Standard Rating Structure for AC High-Voltage Circuit Breakers
IEEE C37.06 AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis- Preferred Ratings and Related Required
Capabilities
IEEE C37.09 IEEE Standard Test Procedure for AC High-Voltage Circuit Breakers Rated on a Symmetrical Current Basis
IEEE C37.20.7 IEEE Guide for Testing Medium-Voltage Metal-Enclosed Switchgear for Internal Arcing Faults
IEC 60529 Degrees of protection provided by enclosures
IEC 61243-5 Voltage detecting systems (VDS)
Table 1.2. Standards applied
Unless otherwise specied, the most recent valid
version of each standard applies.
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General description General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

1.3. Main components
1Gas tank
2Busbar compartment
3Cable compartment
4Gas pressure relief chimney
5Control compartment
6Driving mechanism compartment
Figure 1.1. Main components of cubicles cpg.0
Gas tank
This is a sealed compartment, made of stainless steel and
sealed for life, which houses the switching and breaking
switchgear, with gas as insulating medium.
Depending on the function for which the cubicle was
designed, it may contain the following components:
• Busbar disconnector.
• Grounding disconnector.
• Internal busbar and connections.
• Vacuum circuit-breaker.
• Switch - disconnector.
• Fuse holders.
Connection to the busbar is possible via upper bushings.
Connection to the medium voltage cables is made with the
lower bushings.
The gas pressure is tested, in each cubicle visually by means
of a pressure switch with a volt-free contact, allowing it to
be used as a remote alarm or blocking/trip for the position.
Figure 1.2. Example of bushing position in gas tank (1)
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
General description

Busbar compartment
This is used for connecting cubicles. It has solid and shielded
insulation, grounded by means of the compartment’s
specic grounding bar.
As an option, the busbar forms a device with phases
segregated by means of a set of grounded metal plates
(metal-clad device).
Toroidal current transformers and/or plug-in voltage
transformers can be installed in this compartment, thus
avoiding the need for metering cubicles.
Figure 1.3. Phase segregation in the busbar (optional)
Cable compartment
Located in the lower part of the cubicle, this has a cover,
interlocked with the grounding circuit, which allows front
access to the medium voltage cables.
In the most complete case, the base can house the following
components:
• Phase segregation assembly (optional).
• Up to 4 reinforced shielded connection terminals
(screw-in) per phase.
• Clamp anges for the medium voltage cables.
• Grounding bars.
• Toroidal current transformers.
• Plug-in voltage transformers.
All the elements making up the enclosure are
grounded by means of a conductor consisting of a
copper bar, sized to withstand the rated short-time
current. This bar is located in the base in a way that it
does not need to be dismantled in order to insert or
remove a cable and its corresponding termination.
Figure 1.4. Detail of the main box and the segregating cover
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General description General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

Fuse compartment
The fuse protection cubicle cpg.0-f, has separate fuse
holders to house medium voltage limiter fuses.
The compartments are pipe-shaped and are fully enclosed
in the gas tank, making them unaected by pollution. To
remove and insert the fuses in the fuse holder, a carriage
is used to simplify the operation and ensure correct fuse
placement.
The pipe seal consists of an elastic membrane with the
following functions:
• To ensure the water-tightness of the fuse holder
against ooding and thus avoid interior pollution and
degradation.
• Additional insulation to that provided by the fuse holder
carriage insulator.
• To transmit the movement of the fuse striker to the
tripping mechanism, while maintaining the water
tightness of the fuse holder tube.
By the very nature of its construction, this sealed solution
is subject to the internal overpressure caused by abnormal
overheating of the internal air. In this case, the trip device
can act as protection against overheating, thus preventing
damage to both the fuse and the fuse holder.
Figure 1.5. Fuses compartment detail
Exterior cable connections (bushing)
The cpg.0 cubicles have bushings on the front for medium
voltage cable connection. These are made of epoxy resin
and can, thanks to their conguration, withstand the
current transformers. They are duly screened and designed
in line with Standard EN 50181, being of type “C”.
They allow the connection of conductors of up to 800 mm2
via screw-in T-type connectors of any manufacturer. The
cable compartment allows the installation of up to three
cables [3] per phase, with a symmetrical terminal, or up to
four cables per phase, with an asymmetric terminal.
Figure 1.6. Cable compartment
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
General description

Gas pressure relief duct (optional)
A duct made of metal sheet, which conducts the gases
produced by an internal arc towards the top of the cubicle,
from any of the three compartments: gas tank, cable
compartment and busbar compartment.
1Gas pressure relief diaphragm
2Gas vent from cable compartment
Figure 1.7. Pressure relief diaphragm and gas vent detail
Figure 1.8. Gas pressure relief duct detail (1)
Control compartment
Placed at the top of the cubicle and separate from the
medium-voltage area, this is ready for installation of the
measuring equipment and protection relays. It contains
the terminal block with the control signals duly identied
in accordance with the wiring diagram provided with
the equipment. All the connections between the driving
mechanisms compartment and the control box are made
via connectors, which makes the assembly more exible,
and allows the control box to be assembled and connected
on site in a straightforward, direct way.
Figure 1.9. Control compartment detail
Driving mechanism
In addition to a mimic diagram customised for each type of
function, this has the driving elements in its middle section:
busbar disconnector/grounding disconnector and circuit
breaker driving mechanisms, circuit breaker opening/
closing pushbuttons, status indicators, groove for access of
the spring loading lever, etc.
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General description General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

2. Technical characteristics
2.1. Electrical characteristics
Functions
cpg.0-v
cpg.0-c
cpg.0-s
cpg.0-f
cpg.0-rb
Rated voltage [Ur]kV 15 27 38
Power frequency [Ud] (*)
Between phases kV 35 60 70
Isolating distance kV 38.5 66 77
Lightning impulse [Up] (*)
Between phases kV 95 125 150
Isolating distance kV 104.5 137.5 165
(*) Ratings can be increased for 15, 27 and 38 kV by customer request. Check with Ormazabal.
Table 2.1. Table of common electrical characteristics to the cpg.0 family
For rated voltage of 15 kV cpg.0-v cpg.0-c cpg.0-s cpg.0-f cpg.0-rb
Rated current [Ir]
General busbar A
1200
1600
2000
2250
1200
1600
2000
2250 (*)
1200
1600
2000
2250
1200
1600
2000
2250
1200
Branch A
1200
1600
2000
2250 (*)
NA
1200
1600
2000
2250 (*)
200 1200
Short-circuit [Ik]
tk= 1 or 3 s kA 25 25 25 25 25
(*) with forced ventilation
Table 2.2. Specic electrical characteristics for 15 kV series
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Technical characteristics

For rated voltage of 27 kV cpg.0-v cpg.0-c cpg.0-s cpg.0-f cpg.0-rb
Rated current [Ir]
General busbar A
1200
1600
2000
2250
1200
1600
2000
2250 (*)
1200
1600
2000
2250
1200
1600
2000
2250
1200
Branch A
1200
1600
2000
2250 (*)
NA
1200
1600
2000
2250 (*)
200 1200
Short-circuit [Ik]
tk= 1 or 3 s kA 25 25 25 25 25
(*) with forced ventilation.
Table 2.3. Specic electrical characteristics for 27 kV series
For rated voltage of 38 kV cpg.0-v cpg.0-c cpg.0-s cpg.0-f cpg.0-rb
Rated current [Ir]
General busbar A 1200 1200 1200 1200 1200
Branch A 1200 1200 1200 200 1200
Short-circuit [Ik]
tk= 1 or 3 s kA 25 25 25 25 25
Table 2.4. Specic electrical characteristics for 38 kV series
Other characteristics cpg.0-v cpg.0-c cpg.0-s / cpg.0-rb cpg.0-f
Automatic reclosing sequence O – 0.3 s – CO – 15 s - CO NA
Motorised spring loading time s < 15 NA
Short-circuit breaking rated
current kArms 25 NA With fuse: 25
Short-circuit closing rated
current kApeak 65 NA With fuse: 63
Opening time ms < 45 NA With fuse: < 72
Short-circuit break-time ms < 50 NA
Vacuum line rated current A 10 NA
Vacuum cable rated current A 31.5 50 31.5 50 NA 50
Transfer rated current A NA NA NA 820
Capacitor bank rated current A 400 NA
Internal fault rated current kA 65 peak – 25 rms
Internal fault rated time s 1
Electrical endurance
Circuit breaker: E2
Busbar disconnector: E0
Grounding disconnector: E2
Busbar disconnector: E0
Grounding disconnector: E2
(cpg.0-rb NA)
Switch: E3
Grounding switch: E2
Mechanical endurance
class
(no. of
operations)
no load:
Circuit breaker: M2 (10 000)
Busbar disconnector: M1 (2000)
Grounding Disconnector: M1 (2000)
no load:
Disconnector: M1 (2000)
(cpg.0-rb NA)
no load:
Switch: M1 (2000)
Grounding switch: M0 (1000)
in load:
Circuit breaker: M2 (10 000)
Busbar disconnector: M1 (2000)
Grounding Disconnector: M1 (2000)
in load:
Disconnector: -
(cpg.0-rb NA)
in load:
Switch: (100)
Grounding switch: -
Internal arc classication in
accordance with IEC 62271-202 AFL[R] 25 kA 1 s
NA: Not applicable.
Table 2.5. Additional electrical characteristics
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Technical characteristics General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

2.1.1. Name plate
Each unit includes a name plate, with some of the
following data, reecting each cubicle’s individual electrical
characteristics:
Figure 2.1. Example of name plate
Nameplate
Type Cubicle range designation
S/N Cubicle serial number (*)
PO# Purchase Order number
Specication Customer specication
Designation Cubicle model
-Continuous duty / Indoor General purpose
kVmax Equipment rated voltage (kV)
UpLightning impulse withstand voltage (kV)
UdPower frequency withstand voltage (kV)
Ir/ Iload Equipment rated continuous current and load switching current (A)
Ik/ IpShort-time withstand current/ Short-time withstand peak value - Fault making current (kA)
tkShort-time withstand current time (s)
SF6Weight of insulating uid (lb)
Weight Weight of the cubicle (lb)
TcThermal class (°F)
frEquipment rated frequency (Hz)
-Rated lling pressure for insulation / Rated lling pressure for operation (psi)
Address Factory address
(*) In the event of incident, this number should be reported to Ormazabal.
Table 2.6. List of information contained on the name plate
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Technical characteristics

2.2. Mechanical characteristics
2.2.1. Dimensions
Figure 2.2. cpg.0 dimensions
Model Branch
[A]
a
(ft in)
[mm]
h
(ft in)
[mm] hp
(ft in)
[mm]
f
(ft in)
[mm]
Weight
(lb)
[kg]
Low
control
box
Standard
control
box
High
control
box
v
1200 (1’ 11 5/8”)
[600]
(7’ 3 19/32”)
[2225]
(7’ 11 15/32”)
[2425]
(8’ 7 11/32”)
[2625]
(2’ 2 3/16”)
[665]
(4’ 5 3/4”)
[1365]
< (1764)
[800]
1600 < (1984)
[900]
2000 (2’ 7 1/2”)
[800] (4’ 11 13/16”)
[1519]
< (2425)
[1100]
2250 < (2645)
[1200]
f 200 (1’ 11 5/8”)
[600]
(4’ 7 3/16”)
[1402]
< (1543)
[700]
s
1200 (1’ 11 5/8”)
[600]
(4’ 5 3/4”)
[1365]
< (1543)
[700]
1600 < (1764)
[800]
2000 (2’ 7 1/2”)
[800]
(4’ 11 13/16”)
[1519]
< (2205)
[1000]
2250 < (2425)
[1100]
Continued on next page
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Technical characteristics General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

Continuation
Model Branch
[A]
a
(ft in)
[mm]
h
(ft in)
[mm] hp
(ft in)
[mm]
f
(ft in)
[mm]
Weight
(lb)
[kg]
Low
control
box
Standard
control
box
High
control
box
c
1200 (3’ 11 1/4”)
[1200]
(7’ 3 19/32”)
[2225]
(7’ 11 15/32”)
[2425]
(8’ 7 11/32”)
[2625]
(2’ 2 3/16”)
[665]
(4’ 5 3/4”)
[1365]
< (4409)
[2000]
1600 < 4630
[2100]
2000 (5’ 3”)
[1600]
(4’ 11 13/16”)
[1519]
< 4850
[2200]
2250 < 5070
[2300]
rb 1200 (1’ 11 5/8”)
[600]
(4’ 5 3/4”)
[1365]
< 1764
[800]
Table 2.7. Dimensions and weights cpg.0
2.3. IP rating
All power circuit elements are installed inside a stainless
steel gas tank, providing IP65 degree of protection. The
standard degree of protection for the cubicle assembly, in
all designations, is IP3X.
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Technical characteristics

3. Normal service conditions
Installation Indoor
Maximum ambient temperature 104 °F (+40°C)
Minimum ambient temperature -13 °F (-25 °C)
Maximum average ambient temperature, measured over a 24-hour period 95 °F (+35°C)
Maximum average relative humidity, measured over a 24-hour period < 95 %
Maximum average relative humidity, measured over a 1-month period < 90 %
Maximum height above sea level 3,250 feet
(1,000 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
Table 3.1. Normal service conditions
The specications refer to section “Normal service
conditions for indoor cubicles” in the IEC 62271-1
standard “Common specications for high-voltage
cubicles”.
For special service conditions (maximum ambient
temperature above 104 °F (+ 40 °C), transport height,
storage or installation over 3,250 ft (1000 m) above sea
level, signicant pollution level, or others dierent to
those described) check with Ormazabal.
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Normal service conditions General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

4. Handling and transport
4.1. Transport conditions
During transport, the switchgear must be perfectly seated
and xed so that it cannot move about and possibly damage
the equipment. Always in upright position, directly on the
ground or on a wooden pallet, depending on the type
of handling involved. Check that the cubicle is perfectly
balanced at all times.
4.2. Lifting means
The cpg.0 cubicles can be handled by lifting (with slings) or
with a forklift truck (with a pallet):
Figure 4.1. Lifting a cpg.0 cubicle using chains Figure 4.2. Lifting a cpg.0-c cubicle with a forklift truck
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General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Handling and transport

During the installation period, Ormazabal provides a
specic tool for lifting the cpg.0-c coupling cubicle:
Figure 4.3. Lifting of a cpg.0 cubicle with a specic tool
Figure 4.4. Lifting a cpg.0-c cubicle using a forklift truck and specic tool
Figure 4.5. Wheel anchors in the cubicle
Figure 4.6. Detail of the positioned wheel
Elevating caster wheels can be used to put the cubicles in
their nal position.
Optional supply. Please check with Ormazabal.
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Handling and transport General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

5. 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, ensuring it is not damaged during
the storage period.
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 5.7. Storage conditions detail
Storage must always be INDOORS, with the following
conditions recommended:
1. Ambient air temperature should not exceed 104 °F
(40 °C) and its mean value, measured in a period of
24 hours, should not exceed 95 °F (35 °C).
2. The ambient air temperature should not drop below
- 13 °F (- 25 °C).
3. The switchgear must be protected from direct solar
radiation.
4. Maximum altitude is 3250 ft / 1000 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 in
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-196-US version 02; 19/02/2020 17
General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Storage

6. Installation
6.1. Unpacking the equipment
The cpg.0 switchgear is supplied protected with a plastic
cover.
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.
2. Remove the cellophane.
3. Detach the white polystyrene corner pieces.
4. Unscrew the xings between the base and the pallet.
5. 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.
6.2. List of assembly material supplied
Along with the cpg.0 switchgear a box is supplied with all
the material necessary for installation and correct operation.
Depending on the cubicles which form part of the supply,
the assembly materials delivered will be some of the
following:
1. Spring charging and actuating levers.
2. Interconnection busbars and busbar compartment
enclosure elements.
3. Grounding bars.
4. Decorative sides.
5. Medium voltage fuses (where applicable).
6. Necessary nuts and bolts.
7. Alcohol and paper roll.
Ensure the box contains the elements indicated in the
materials list provided with the supply. If it does not,
contact Ormazabal.
IG-196-US version 02; 19/02/2020
18
Installation General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards

6.3. Minimum installation distances
The minimum distances to the walls and ceiling, in
accordance with Standard IEC 62271-200 Annex AA, are as
follows:
Figure 6.1. Minimum installation distances detail
Minimum distances (ft inch) [mm]
Cubicle
Side wall (a) > (3 15/16”) [100]
Roof (b) > (1’ 11 5/8”) [600]
Front clearance (c) Operation:
> (3’ 3 3/8”) [1000]
Cubicle removal:
> (4’ 11 1/16”) [1500]
Table 6.1. Minimum installation distances
For other types of building work, please check with
Ormazabal.
IG-196-US version 02; 19/02/2020 19
General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards
Installation

6.4. Cable trench
The surface where the cubicles will be installed must be
level with a tolerance of ± 1/100 inch per foot (1 millimeter
per metre). The general layout of the cubicles will be
checked in order to verify the suitability of the medium and
low-voltage cable area.
Figure 6.2. Cable trench with tracks detail
Figure 6.3. Cable trench detail
See recommended dimensions in section 6.4.1.
6.4.1. Recommended dimensions
Minimum recommended dimensions based on the
trench dimensions used in the tests in accordance with
IEC 62271-200. The dimensions of the trench may vary in
accordance with the minimum radius of curvature of the
cables used.
Figure 6.4. Trench dimensions
Minimum distances [mm]
Trench
Depth (e) > (1’ 7 11/16”) * [500]
Depth (f) (2’ 5 17/32”) * [750]
(*) The dimensions of the trench depend on the characteristics of the
cables used.
Table 6.2. Minimum recommended dimensions for the cable trench
IG-196-US version 02; 19/02/2020
20
Installation General instructions
cpg.0 (2012): GIS-type medium-voltage
switchgear with full insulation in gas,
up to 38 kV in accordance with IEEE Standards