Ormazabal cpg.0 ENA Series Instruction manual

LIB
cpg.0 ENA range
Medium voltage SF
6
gas-insulated
switchgears up to 36 kV
According to ENA Technical Specification
41-36 Issue 3 2017
General instructions
IG-273-EN, version 03, 05/08/2020

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. This 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 warranty.
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, Electricity at work regulations 1989, Local High Voltage safety rules.

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General instructions
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Ormazabal NoCC 1074 Switchgear types
Ormazabal NoCC 1074 Switchgear types
NoCC 1074 Designations
cpg.0-v cpg.0-l cpg.0-c cpg.0-pt cpg.0-rb obb.12
Circuit breaker (1) (7) (8) (9) Switch-disconnector
(2) (7) (8) (9)
Bus section circuit
breaker (3) (8) (9)
Busbar earthing switch
(4) (7) (8) (9) Busbar riser (5) (7) (8) Busbar bridge
1200 mm (6) (7)
1) Feeder/Incomer circuit breaker. Modular extensible single busbar SF6gas insulated xed pattern vacuum circuit breaker for indoor application with
manual or optional motorised 3 position disconnector.
2) Designation cpg.0-l Non-auto circuit breaker without CT’s and protection to perform the function of a switch-disconnector. Based on the cpg.0-v
circuit breaker.
3) Bus section circuit-breaker based on cpg.0-v connected via standard busbar system to a cpg.0-s bus riser disconnector.
4) cpg.0-pt utilises a circuit breaker unit with feeder shorting and earthing links to perform a busbar earthing function. Appropriate fascia, interlocking and
shielding provided.
5) cpg.0-rb Based on the circuit breaker gas tank the bus riser allows direct cable connection from feeder bushing to the busbars with no switching
function. Direct copper connections through the SF6compartment. This panel can also be used for metering purposes.
6) OBB 1200 mm Busbar bridge. Installation allows units to be withdrawn from a switchboard whilst maintaining busbar continuity. This equipment also
facilitates a 600 mm separation between panels in a switchboard. This enables a physical barrier to be installed between panels whilst maintaining
sucient room for operation, maintenance and cable access.
7) All panels may be installed in left-hand, right-hand or centre positions.
8) Plug in voltage transformers available for direct mounting onto busbar cross connectors. (Feeder voltage transformers are cable connected). Bar primary
current transformers may be mounted in the busbar compartment.
9) Disconnector motorisation is available as an option.
Table 0.1. NoCC 1074 designations

PROVISIONAL
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Contents General instructions
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Contents
Ormazabal NoCC 1074 Switchgear types.................3
1. General description ...................................................5
1.1. Models ......................................5
1.2. Standards applied............................5
1.3. Main components ...........................6
1.4. Voltage presence indicator . . . . . . . . . . . . . . . . . . .9
1.5. Name plate .................................10
2. Technical characteristics..........................................11
2.1. Electrical characteristics .....................11
2.2. Mechanical characteristics ..................12
2.2.1. Dimensions and weights ....................12
2.2.2. Protection grade ............................12
3. Service conditions....................................................13
4. Handling and transport...........................................14
4.1. Transport conditions ........................14
4.2. Lifting means ...............................14
5. Storage conditions...................................................16
6. Installation ...............................................................17
6.1. Unpacking the equipment ..................17
6.2. List of assembly materials supplied ..........18
6.3. Cable trench ................................20
6.4. Minimum installation distances..............21
6.4.1. Interlocks ...................................22
6.5. Fastening to the floor .......................23
6.6. Cubicle joints ...............................24
6.6.1. cpg.0-v/cpg.0-l/cpg.0-pt/cpg.0-rb...........25
6.6.2. cpg.0-c .....................................26
6.7. Equipment earthing ........................27
7. Operations sequence...............................................28
7.1. Feeder up to 1250 A ........................28
7.1.1. Circuit breaker and switch-disconnector
(cpg.0-v and cpg.0-l) ........................28
7.1.2. Bus section circuit breaker (cpg.0-c) .........37
7.1.3. Busbar earthing switch (cpg.0-pt) ...........43
7.1.4. Bus riser (cpg.0-rb) ..........................46
7.2. Feeder up to 2000/2500 A ...................47
7.2.1. Circuit breaker (cpg.0-v).....................47
7.2.2. Bus section circuit breaker (cpg.0-c) .........55
8. Safety elements........................................................61
8.1. Interlocks ...................................61
8.1.1. Padlocking facilities .........................61
9. Maintenance.............................................................64
10. Spares and accessories ............................................65
11. Environmental Information ....................................66
11.1. Sulphur Hexafluoride SF6....................66
11.2. Recyclability ................................66

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General instructions
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General description
PROVISIONAL
1. General description
The cpg.0 switchgear range is made up of a series of cubicles,
with complete insulation in SF6, for primary distribution in
medium-voltage networks up to 36 kV.
1.1. Models
Model Function
cpg.0-v Circuit breaker
cpg.0-l Switch-disconnector
cpg.0-c Bus section circuit breaker
cpg.0-pt Busbar earthing switch
cpg.0-rb Busbar riser
1.2. Standards applied
Standard Description
IEC 62271-1 Common specications for high-voltage switchgear standards
IEC 62271-200 Alternating current metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and
including 52 kV
IEC 62271-100 Alternating current circuit-breakers
IEC 62271-102 Alternating current disconnectors and earthing switches
Technical Specication
41-36 Issue 3 2017
Switchgear for service up to 36kV (cable and overhead conductor connected)

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General description General instructions
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1.3. Main components
1Busbar compartment
2Gas tank
3Gas pressure relief duct
4Cable compartment
5Low-voltage control compartment
6Driving mechanism compartment
Figure 1.1. Main elements of cpg.0 cubicles
Gas tank
This is a sealed compartment made of stainless steel and
sealed for life which houses the switching and breaking
devices, with SF6 gas as the insulating medium.
Figure 1.2. Bushing position in gas tank (1)
Depending on the function for which the cubicle was
designed, it may contain the following components:
• Disconnector.
• Earthing switch.
• Internal busbar and connections.
• Vacuum circuit-breaker.
It can be connected to the busbar and the medium-voltage
cables respectively by means of bushings at the top and
bottom.
The gas pressure is conrmed in each cubicle by means
of a pressure switch with a potential-free contact, allowing
it to be used as a remote alarm or blocking/trip for the
specic cubicle.
Busbar compartment
The busbar compartment, also designed to withstand an
internal arc, is located above the gas tank and separated
from the gas compartment. It is made from metal sheet,
oering the degree of protection necessary for the busbar
connection device.
It comprises a fully assembled, tested unit, with solid,
screened insulation.
Figure 1.3. Example of busbar compartment
Toroidal current transformers and/or plug-in voltage
transformers can also be installed in the busbar
compartment, thus avoiding the need for metering
cubicles.

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General description
Cable compartment
The cable connection compartment, located at the bottom
part of the cubicle, is interlocked such that front access to the
medium voltage cables is not allowed until the main circuit
is earthed. This compartment is prepared to withstand an
internal arc in terminals up to 5 kA - 1 s, meeting the criteria
of Annex A of Standard IEC 62271-200, class IAC: AF, AFL or
AFLR.
Both voltage and current transformers can be housed inside
the cable compartment.
Figure 1.4. Cable compartment detail
All the elements making up the enclosure are earthed
by means of a conductor consisting of a copper bar,
sized to withstand the rated short-time current. This is
located in the cable compartment, it does not need to
be dismantled in order to insert or remove a cable and
its corresponding termination.
[2] In accordance with model; see the unit's Name Plate.
Gas pressure exhaust duct
The cubicle is certied to withstand an internal arc in the
gas tank up to 25 kA - 1 s[2], meeting the criteria of Annex AA
of Standard IEC 62271-200, accessibility class IAC: AF, AFL
or AFLR
1Gas pressure exhaust diaphragm
2Gas vent from cable compartment
Figure 1.5. Pressure relief diaphragm and gas vent detail
A exhaust duct made of metal sheet, 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.
Figure 1.6. Gas pressure relief duct detail (1)

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General description General instructions
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Incoming cable connections (bushings)
The cpg.0 cubicles have bushings on the front for medium-
voltage cable connection. These are made of epoxy resin
and can, due to their conguration, incorporate the current
transformers. They are screened and designed in line with
Standard EN 50181, being of type “C2”.
They allow the connection of conductors of up to 800 mm2
through screw-on separable connectors. The cable
compartment of the 1250 A unit can be used to install up to
three cables per phase (four on request).
Figure 1.7. 1250 A cable compartment
The 2000/2500 A unit incorporates 2xC2 bushings per
phase and can accommodate 6 cables per phase.
Figure 1.8. 2000/2500 A cable compartment
Control compartment
Placed at the top of the cubicle and separate from the
medium-voltage area, this is ready for installation of the
metering equipment and protection relays. It contains
the terminal blocks with the control signals identied in
accordance with the wiring diagram provided with the
equipment. The use of multipole connectors makes the
assembly more exible, and allows the control box to be
assembled and connected on site in a straightforward,
direct way (current transformers and voltage transformers
connections are directly wired).
Figure 1.9. Control compartment detail
Driving mechanism
In addition to a mimic diagram customised for each type
of cubicle, this has the driving elements in its middle
section: disconnector/earthing switch and circuit-breaker
driving mechanisms, circuit-breaker opening/closing push-
buttons, status indicators, provision for access of the springs
charging lever, etc.

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General instructions
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General description
1.4. Voltage presence indicator
The voltage presence-absence indicator installed in the
cpg.0 cubicles is designed and built in accordance with the
recommendations set out in Standard IEC 61243-5, within
the integrated detectors without auxiliary power supply
category.
The unit has three light signals corresponding to phases
L1, L2 and L3. On the front of the indicator, a test point is
accessible for each of the phases and earth, which is used
to test the balance of all phases. We recommend use of any
universal phase comparator which complies with standard
IEC 61243-5. As an option, the detection unit has a free
auxiliary contact for remote indication of voltage presence/
absence.
The device indication complies with the requirements laid
down in standard IEC61243-5:
• ABSENCE OF VOLTAGE: U (*) < 10 % Ur**
• UNCERTAINTY: 10 % Ur< U < 45 % Ur
• VOLTAGE PRESENCE: U> 45 % Ur
(*) U = phase-to-earth voltage
** Ur= rated operating voltage
The presence of voltage is indicated by activation of the
LEDs for each of the phases. If the presence of voltage is not
detected, the LEDs for each of the phases remain unlit.

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General description General instructions
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1.5. Name plate
Every unit includes a data plate, with some of the following
data:
Figure 1.10. Name plate example, busbar and circuit breaker Ir= 1250 A
Figure 1.11. Name plate example, busbar Ir= 2000 A and circuit breaker
Ir= 1250 A
Figure 1.12. Name plate example, busbar and circuit breaker Ir= 2000 A
Name plate
Nº Cubicle serial number*
Type Ormazabal cubicle system
Designation Cubicle model
Standard Standards applied to the equipment
UrEquipment rated voltage (kV)
UpLightning impulse withstand voltage (kV)
UdIndustrial frequency withstand voltage (kV)
frEquipment rated frequency (Hz)
IrEquipment rated current (A)
Ik/ IpShort-time withstand current/Short-time
withstand peak value
tkShort-time withstand current time
Pre Gas pressure inside the tank (MPa)
Pme Minimum operating gas pressure (MPa)
SF6Weight of insulating uid (g)
Year Year of manufacture
TC Thermal class
IAC Internal arc classication
LSC Loss of service continuity category
* In the event of incident, this number should be reported to Ormazabal.
Table 1.1. Name plate

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Technical characteristics
2. Technical characteristics
2.1. Electrical characteristics
Functions
cpg.0-v
cpg.0-l
cpg.0-c
cpg.0-pt
cpg.0-rb
Rated voltage [Ur] kV 36
Industrial Frequency [Ud]
Between phases kV 70
Insulating distance kV 80
Lightning Impulse [Up]
Between phases kV 170
Insulating distance kV 195
Table 2.1. Rated voltage
Rated current [Ir]
cpg.0-v
cpg.0-l
cpg.0-c
cpg.0-pt
cpg.0-rb
General busbar A 1250/2000/2500
Feeder A 1250/2000*/2500*
Short-circuit [Ik] tk= 3 s kA 25
* Only available for cpg.0-v and cpg.0-c
Table 2.2. Rated current
cpg.0-v / cpg.0-pt /
cpg.0-l cpg.0-c cpg.0-s cpg.0-rb
Reclosing sequence O - 0.3 s - CO - 15 s - CO
CO - 15 s - CO N/A N/A
Circuit breaker motorized spring charging time s < 15 N/A
Rated short-circuit
breaking current
Time constant = 45 ms kArms 25
N/ATime constant = 120 ms kArms 20 (Ifeeder = 1250 A) / 25 (Ifeeder = 2000/2500 A)
Time constant = 135 ms kArms 20
Rated short-circuit making current kApeak 62.5 N/A
DC % < 38 N/A
Opening time ms < 120 N/A
Short-circuit break time ms < 50 N/A
Rated line-charging breaking current A 10 N/A
Rated cable-charging breaking current A 50 N/A
Rated single capacitor bank breaking current A 400 N/A
Internal arc fault Busbar and gas tank compartment kA 25
Cable compartment kA 5 (to ENA TS 41-36)
Rated internal arc fault time s 1
Electrical endurance E2 (circuit-breaker) / E0 (disconnector) N/A
Mechanical endurance
Ifeeder = 1250 A M2 (circuit breaker) / M0 (disconnector manual) or
M1 (disconnector motor) N/A
Ifeeder = 2000/2500 A M1 (circuit breaker) / M0 (disconnector manual) or
M1 (disconnector motor)
Table 2.3. Other characteristics

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2.2. Mechanical characteristics
2.2.1. Dimensions and weights
Figure 2.1. cpg.0 dimensions
Model Feeder Ir
[A]
a
[mm]
h
[mm]
f
[mm]
Weight
[kg]
cpg.0-v 1250 600
2425
(2225 and 2625
on request)
1365
(1377 for
IAC AFL(R) class)
850
2000/2500 1000 1100/1200
cpg.0-l
cpg.0-pt 1250 600 850
cpg.0-c 1250 1200 1300
2000/2500 2000 2300/2500
cpg.0-rb 1250 600 500
Table 2.4. Dimensions of cpg.0 cubicles
2.2.2. Protection grade
All power circuit elements are installed inside a stainless
steel cubicle, providing IP65 degree of protection. The
maximum degree of protection for the cubicle assembly, in
all designations, is IP3X.

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Service conditions
3. Service conditions
Installation Indoor
Maximum ambient temperature + 40 °C(a)
Minimum ambient temperature - 5 °C (b)
Maximum mean ambient temperature, measured
over a 24-hour period
+ 35 °C
Maximum mean 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 1000 m(c)
Solar radiation Negligible
Environmental air pollution (dust, salinity, etc.) Insignicant
Vibrations (seismicity) Negligible
(a) For special operating conditions (maximum ambient
temperature greater than + 40 °C), please ask Ormazabal.
(b) - 25 °C on request.
(c) For higher altitudes for transport, storage and/or installation,
please check with Ormazabal.
Table 3.1. Switchgear service 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'.

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Handling and transport General instructions
cpg.0 ENA range
4. Handling and transport
4.1. Transport conditions
During transport, the switchgear must be correctly 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 pallet, depending on the type of handling
involved. Check that the cubicle is perfectly balanced at all
times.
The units are top heavy and due care must be taken
when handling.
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
Figure 4.3. Lifting a cpg.0 cubicle using forklift truck

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Handling and transport
During installation, Ormazabal could provide a specic
tool for handling the cpg.0 coupling cubicle when lifting:
Figure 4.4. Lifting a cpg.0-c cubicle using chains and tool
Figure 4.5. Lifting a cpg.0-c cubicle using a forklift truck and tool
Elevating caster wheels can be used to put the cubicles in
their nal position.
Optional supply. Please check with Ormazabal.
Figure 4.6. Wheel xings in the cubicle
Do not move the units with the cable compartment
threshold section or voltage transformer rear access
cover removed.
Do not use pry bars under the threshold piece as this
may cause damage to the unit.
Figure 4.7. Detail of the positioned wheel

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Storage conditions General instructions
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5. Storage conditions
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 5.1. Storage conditions detail
Storage must always be INDOORS, with the following
conditions recommended:
1. Ambient air temperature should not exceed
40 °C and its mean value, measured in a period of
24 hours, should not exceed 35 °C.
2. The ambient air temperature should not drop below
-5 °C. Also -25 °C air temperature is avaiable for -25 °C
cubicles class to service conditions chapter.
3. The switchgear must be protected from direct solar
radiation.
4. Maximum altitude is 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:
g. The mean relative humidity value, measured over a
period of 24 hours, must not exceed 95 %.
h. The mean water steam pressure value, measured in
a period of 24 hours, must not exceed 2.2 kPa.
i. The mean relative humidity value, measured over a
period of one month, must not exceed 90 %.
j. The mean water steam pressure value, measured in
a period of 1.8 hours, 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 at the nal destination or in transport. Otherwise,
the manometer needle may indicate an incorrect value,
even if the equipment's internal pressure is correct.

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General instructions
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Installation
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 lm
packaging the cubicle is wrapped in.
2. Remove the lm wrapping.
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.

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Installation General instructions
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6.2. List of assembly materials supplied
Along with the switchgear cpg.0 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:
Ensure the box contains the elements indicated in the
materials list provided with the supply. If it does not,
contact Ormazabal.
Description Image
Feeder disconnector lever
Earthing switch lever
Continues on the next page

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Installation
Continuation
Description Image
Spring charge lever for 1250 A
Spring charge lever for 2000/2500 A
Earthing bar for cubicle connection
Table 6.1. Materials supplied

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6.3. Cable trench
The surface where the cubicles will be installed must be level
with a tolerance of ± 1 millimetre 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.
See recommended dimensions in section 6.4. For
dimensional details of the unit and installation see the
unit specic drawings supplied with the equipment.
Figure 6.1. Cable trench with tracks detail
Figure 6.2. Cable trench detail