DRIESCHER ECOS-C User manual

B
ECOS-C
User manual
DRIESCHER
Medium voltage-
Compact switchgear
ECOS-C
• Indoor
• SF6-free
• Rated voltage 24 kV
STROM • SICHER • SCHALTEN

MV - Compact switchgear ECOS-C
B ECOS-C
Contents
1 INTRO UCTION 5
1.1 Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Hazard signs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.3 Guarantee and indemnification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Basis of this user manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Associated documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.6 Quality Assurance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Type testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.8 Manufacturing standards – conformity . . . . . . . . . . . . . . . . . . . . . . . . 7
2 SAFETY 8
2.1 General Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1.1 Use for the intended purpose
2.2 Operational safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2.1 The 5 safety rules
2.2.2 uties of the operating company
2.2.3 Qualification and requirements of personnel
2.2.4 Fire prevention requirements
3 TECHNICAL ESCRIPTION 11
3.1 Technical data of the switchgear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Technical data of the circuit breaker . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Function and design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.3.1 Performance profile
3.3.2 esign features
3.3.3 Vacuum interrupter technology
3.3.4 esign of the switch unit
3.3.5 esign of the switch system
3.3.6 esign of the switchgear
3.3.7 Behaviour in the event of internal faults
3.3.8 Option - Motorised drive for the main spring
3.3.9 Option - igital protective relay
3.3.10 Option - Secondary cabinet
3.3.11 Option - Heating
3.3.12 Option - Measurement panel
3.3.13 Other options
3.4 imensions and Floor Recesses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.5 Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2 / 52

Contents
4 TRANSPORT AN STORAGE 30
4.1 Handling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.2 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
5 ERECTION AN INSTALLATION 33
5.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.2 Erection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.4 Installation and earthing the cable connections . . . . . . . . . . . . . . . . . . 34
6 COMMISSIONING AN OPERATION 36
6.1 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.3 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.4 Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.5 Changing over the pre-selector switch . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.6 Voltage display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.7 Earthing the input or output cables . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.8 Testing the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.9 Insulating fluid level sight glass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.10 Mechanical switching cycle counter . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7 REPAIR 41
7.1 Basis for repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.2 Concept . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.3 Visual check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.4 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.6 Corrective maintenance / Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7.7 End of working life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
MV - Compact switchgear ECOS-C
B ECOS-C
3 / 52

8 APPEN IX 46
8.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.2 Accessories and spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.2.1 Special tools
8.2.2 Cellplux Cellpack plug-in cable connectors (recommendation)
8.2.3 Accessories and spare parts list
8.3 Materials and consumables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8.4 Troubleshooting / fault rectification . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
General instruction
Read this user manual before installing and commissioning the equipment.
Keep this user manual available at the equipment.
The activities described in this user manual may be performed only by qualified electricians authorised
by the operating company.
Scope of this manual
This user manual forms the basis for operating and using the ECOS-C medium-voltage switchgear.
Translation of the original German User Manual
4 / 52
MV - Compact switchgear ECOS-C
B ECOS-C

MV - Compact switchgear ECOS-C Introduction
B ECOS-C
5 / 52
1 Introduction
1.1 Copyright
The copyright, and all other protective rights to the contents of this manual, remain in their entirety with
RIESCHER GmbH (Elektrotechnische Werke Fritz riescher & Söhne GmbH / riescher GmbH
Eisleben).
Printing and reproduction are permitted solely for personal use for your own information in performance
of the work.
1.2 Hazard signs
Instructions that are important for safety or other reasons are marked in this manual with the following
pictograms for “DANGER", “ATTENTION", “CAUTION", and “NOTICE". For hazards that arise from
high voltages, the special pictogram for hazardous voltages is also used.
DANGER: anger that can lead to personal injuries or death.
DANGER: High voltage, danger of death
Immediate danger of death or serious personal injury due to touching live
high-voltage parts.
ATTENTION: anger or unsafe procedure which may result in serious personal injuries
or major damage to property.
CAUTION: anger or unsafe procedure which may result in significant personal injuries
or damage to property.
NOTICE: Additional information to make the subject matter easier to understand, and
pointers to further sources of information or documentation.

MV - Compact switchgear ECOS-C Guarantee and indemnification
B ECOS-C
1.3 Guarantee and indemnification
Without approval by RIESCHER this document may not be changed during the warranty period. Any
liability of RIESCHER for damages, be they of a direct, immediate or remote nature, as direct or indi-
rect consequence of changes to this document after expiry of the warranty period and/or of unautho-
rised changes to this document during the warranty period, is expressly excluded.
1.4 Basis of the user manual
This user manual is based on the following standards:
- EN 62271-1:2017 [IEC 62271-1], chapter 11
- EN 62271-100:2017 [IEC 62271-100], chapter 10
- EN 62271-200:2012 [IEC 62271-200], chapter 10
1.5 Associated documents
The following documents are associated with this manual:
Job-specific electrical circuit diagram
Manuals for optional protective relays and other additional components
Factory instructions
National regulations such as:
- Accident prevention regulations, GUV V3 (Germany)
- 5 safety rules, and more ...
1.6 Quality Assurance
RIESCHER GmbH is certified according to ISO 9001:2015.
6 / 52
NOTICE:
uring all operations, please comply with the instructions regarding
• Tightening torques
• Erection of parts or assemblies
• Test and failure criteria

7 / 52
MV - Compact switchgear ECOS-C Type testing
B ECOS-C
1.7 Type testing
The ECOS-C medium-voltage switchgear unit has been type tested according to EN 62271-200 [IEC
62271-200]. The results of the tests are recorded in the test reports.
The type tests tested the operational capability and safety of the equipment in normal operation and
under fault conditions. The test reports are available on request.
1.8 Manufacturing standards – conformity
RIESCHER declares on its own responsibility that the ECOS-C product satisfies the specified stan-
dards and provisions. This declaration relates to all the product variants that are described in this
document, and to the design and manufacturing drawings and images that have been prepared.
• EN 50110 Operation of electrical equipment
Part 1:2013 General requirements
Part 2:2010 National appendices
• EN 50180:2017 ucts for voltages above 1 kV and up to 52 kV and currents from 250 A to 3.15
kA for liquid-cooled transformers
• EN 60529:2013 Types of protection through casings (IP code)
• EN 60721 Classification of environmental conditions part 3-3:1997 Classes of
environmental impacts and their limit values; fixed installation, weather-protected
• EN 61243-5:2001 Working on live equipment - voltage testers part 5: Voltage test systems
• EN 61869 Instrument transformers
Part 1:2016 General requirements
Part 2:2012 Additional requirements for current transformers
Part 3:2011 Additional requirements for inductive voltage transformers
• EN 61936-1:2014 Electrical power equipment with rated AC voltages above 1 kV
• EN 62271 High voltage switchgear and switching systems
Part 1:2011 Common provisions
Part 100:2017 High voltage AC circuit breakers
Part 200:2012 Metal-clad AC switchgear for rated voltages above
1 kV and up to and including 52 kV
• ISO 9001:2015 Quality management systems

8 / 52
MV - Compact switchgear ECOS-C Safety
B ECOS-C
2 Safety
HIGH VO TAGE, DANGER OF DEATH
The ECOS-C medium-voltage switchgear unit is designed for rated voltages up to 24 kV and is
subject to the applicable national and international regulations for high-voltage operations.
The switchgear can be operated only when it is in the enclosed condition. Safety devices may not be
switched off or disabled. If the regulations in respect of safe working practices are disregarded, mal-
functions and damage to the switchgear or parts thereof, together with injuries and impairment of
health of personnel, may occur. Comply with the statutory and operational provisions for safe working
practices!
2.1 General Safety Instructions
The ECOS-C medium-voltage switchgear unit is manufactured according to current technology and in
compliance with recognised safety standards. Nevertheless hazards and effects on users and third
parties may arise during operation.
DANGER
High voltage, danger of death
uring operation of the switchgear, parts of the equipment are live at high voltages.
• o not remove any guards.
• o not reach into any openings.
• Comply with the safety instructions listed in this manual, the applicable national and
international regulations for accident prevention and the internal working instructions,
operating instructions and safety instructions.
• Faults which may affect safety must be rectified immediately.
2.1.1 Use for the intended purpose
The ECOS-C medium-voltage switchgear unit is intended exclusively for the distribution and switching
of electrical energy. It may be operated only by competent persons authorised by the operating com-
pany, who are qualified in terms of the applicable statutory regulations and the applicable national and
international standards and guidelines. Usage for any other purpose is deemed to be improper use
and can give rise to risks to life and limb or personnel and risks of damage to property.
The ECOS-C medium-voltage switchgear unit may be used only when in a technically fault-free state.
The instructions listed in this manual must be complied with.
The operating company bears sole liability for all injuries and damages arising from improper use of
the equipment or parts thereof, or use of the equipment or parts thereof for purposes not approved by
the manufacturer.
Any modifications to the product require approval in advance by the manufacturer and must be docu-
mented accordingly.
The applicable laws and other statutory ordinances, standards and regulations must be complied with
in addition to the chapters of this manual.

MV - Compact switchgear ECOS-C Operational safety instructions
B ECOS-C
9 / 52
2.2 Operational safety instructions
2.2.1 The 5 Safety rules
The following 5 safety rules must be complied with whenever work is being performed on the
equipment:
1. Disconnect the equipment and isolate it in all respects
Before starting work, disconnect the electrical equipment by isolating the current-carrying parts at all
phases.
Example: Switch o the equipment and remove the uses.
2. Secure it against being switched on again
Prevent any possibility of accidentally switching on the equipment on which work is being done.
Example: Keep the uses in your personal possession, lock all switches, lock isolating switches and
hang a prohibition notice
3. Check that the equipment is free of voltage
The person in charge of the work must use appropriate tools to check that the equipment is voltage-
free. Prior to this the measurement tool must have been checked to demonstrate its working order.
Example: use suitable voltage testers to check all phases or phase-to-phase and phase-to earth volt-
ages.
4. Earthing and short circuiting
Earth all current-carrying parts with short circuit-proof earthing conductors and short-circuit devices.
Take care in cases where downstream energy feeds may be present (e.g. solar power systems, ring
mains and emergency back-up power systems).
5. Fit protection against touching adjacent live equipment
If live equipment adjacent to the hazard area cannot be switched off, these must be clearly indicated
in the form of barriers and warning notices or other instructions.
DANGER:
Functional testing of the voltage tester
Before testing to establish that the switchgear is voltage-free, using the Horstmann Orion Compare
voltage tester (see chapter 8.2.1 Special Tools) or using another type of voltage tester according to
EN 61243-5 [IEC 61243-5], a functional test of the voltage tester is to be performed.
ATTENTION:
Short circuit to earth
Earthing a live conductor creates a short circuit to earth, which will cause the protective devices to trip.
• Before connecting a conductor to earth, make sure it is voltage-free.

10 / 52
MV - Compact switchgear ECOS-C uties of the operating company
B ECOS-C
2.2.2 Duties of the operating company
DANGER:
High voltage, danger of death
efects or damage that affect the operational safety of the equipment must be reported to the
manufacturer immediately and rectified without delay.
Such equipment must not be operated.
Unauthorised modifications to the equipment cancel any liability of the manufacturer for direct and
consequential damage arising.
No modifications that may affect safety may be made to the equipment without the manufacturer’s aut-
horisation.
Optional components of the equipment, such as protective relays and motorised charging of the
spring drive, must satisfy the technical requirements specified by the manufacturer.
Only original spare parts from the manufacturer may be fitted.
The activities described in this user manual may be performed only by qualified electricians authorised
by the operating company, who hold the statutorily required authorisation certificate for switching acti-
vities.
2.2.3 Qualification and requirements of personnel
Qualified personnel in the sense of this manual are persons engaged in the transportation, erection,
commissioning and operation of the equipment, and who are appropriately qualified to perform such
work.
The operating personnel must be competent. Competent personnel have appropriate training and
experience, such that they are in the position to recognise and avoid hazards that can arise from elec-
trical voltages.
Such personnel must be authorised to perform switching, i.e. they must be qualified as required by
the national guidelines and the applicable statutory provisions.
The personnel must be instructed about all necessary accident prevention regulations and safety
regulations.
The personnel must be instructed in the use of the necessary and reasonably expect safety equip-
ment.
The personnel must be aware of the applicable national and factory regulations in respect of operation
of high-voltage equipment.
The personnel must have read this user manual.
The person responsible for the equipment must be informed before any work is commenced.
No work on the equipment may be performed without the agreement of the person responsible for the
equipment.
2.2.4 Fire prevention requirements
The relevant national and factory fire prevention regulations and guidelines must be complied with. In
other countries the relevant national regulations must be complied with.