ABB SafeRing XT User manual

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MANUAL
SafeRing XT/SafePlus XT
Installation and operating instructions
• Compact and Smarter
• No live parts exposed
• High reliability and safety
• Safe and easy for operators in both
maintenance and operating conditions

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SafeRing XT/SafePlus XT is a ring
main unit for the secondary
distribution network.
SafeRing XT/SafePlus XT can be
supplied in a number of different
configurations suitable for most
switching applications in 12kV
distribution networks.
Digital solutions like smart
automation, control and
monitoring & diagnostics features
make it a reliable solution for
smart networks and substations.

3INSTALLATION AND OPERATING INSTRUCTIONS
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Table of contents
1. Safety 6-8
1.1 For your safety!
1.2 Skilled personnel
1.3 Crucial information
1.4 Seven Steps That Save Lives
1.5 Required Certifications
1.6 Disclaimer
2. General description 9-11
2.1 Outer assembly
2.2 Outer assembly Standard Metering Module
3. Transport and handling 12-13
3.1 Packing
3.1.2 Transport
3.1.3 By receiving inspection
3.2 Storage
3.2.1 Intent
3.2.2. Codes and standards
3.2.3. Storage condition
4. Technical data 14
4.1 Electrical data SafeRing XT/SafePlus XT
5. Installation 15-17
5.1 Standard 3-Way Ring Main Unit
5.2 3 way Ring Main Unit + 3 way Ring Main Unit Coupling
5.3 Standard 3-Way Ring Main Unit + Metering Module
6. Dimensions 18
6.1 Weight table
6.2 Dimension
7. Internal arc classification (IAC) 19-20
7.1 IAC AFLR
7.2 Non-arc proof version

4SAFERING XT/SAFEPLUS XT
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Table of contents
8. Cable compartment 21-28
8.1 Standard Arc proof cable compartment
8.1.1. To Remove cable cover
8.1.2. To Re-fix of cable cover
8.1.3. To Defeat Interlock after Opening Door:
8.2 Cable connection
8.3 Cable Clamping arrangements:
8.4 Cable Earthing arrangements:
8.5 Removal of Bottom cover
8.6 Earthing Of RMU
9. Extension of switchgear 29
9.1 External busbar
10. Current and voltage transformers 30-31
11. Motor operation 32
12. Protection 33
13. Pressure indicator 34-35
13.1 Gas pressure
13.2 Altitude
13.2.1 Adjustment of gas pressure in higher ltitudes
14. Operation of the switchgear 36-37
14.1 Operating conditions
14.2 General warnings and precautions
14.3 Putting into service
14.4 Start-up
15 Operation 38-41
15.1 Operation of C module Switch Disconnector
15.2 Operation of C module switch Disconnector
with push-buttons
15.3 Operation of vacuum circuit-breaker
15.4 Operation of the Disconnector in the V-module

5INSTALLATION AND OPERATING INSTRUCTIONS
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Table of contents
16. Metering module
16.1 To get access to metering module 42
17. Capacitive voltage indicators 43
17.1 Voltage indicators VPIS
18. Additional equipment 44
18.1 Low-voltage connections
18.2 Remote control and monitoring unit
19. Cable testing 45
19.1 Procedure for switchgear with test points
19.2 Procedure for testing directly on the cable
connector with the cable connected to the
switchgear
20. Service and maintenance 46-49
20.1 General warnings and cautions
20.2 Maintenance intervals
20.3 Inspection general aspects
20.4 Servicing instructions
20.5 Repairs
20.6 Tool list SafeRing XT/SafePlus XT
21. Environmental certification 50
21.1 Life expectancy of product
21.2 Recycling capability
21.3 End-of-life
ANNEX Sample work instruction 51-52

6SAFERING XT/SAFEPLUS XT
1.1 For your safety!
• Strictly follow these Installation and operating
instructions.
• Install switchgear in according to IEC 62271-1 cl.4.1.
• Ensure that installation, operation and maintenance is
only carried out by professional personnel.
• Comply fully with the standards in force (IEC or local),
the connection conditions of the local power utility and
the applicable safety at work regulations.
• Observe the relevant information in the manual for all
actions involving the switchgear.
• Use PPE’s when installing or operating switchgear.
1.2 Skilled personnel
All the installations, putting into service, running and
maintenance operations must be carried out by skilled
personnel with in-depth knowledge of the apparatus.
When carrying out any maintenance work, the regulations in
the country of installations must be strictly obeyed.
Maintenance work must only be performed in a professional
way by trained personnel familiar with the characteristics of
the switchgear, in accordance with all the relevant IEC safety
regulations and those of other technical authorities, and
also respecting other overriding instructions. It is
recommended that ABB service personnel to be called to
perform the servicing and repair work.
WARNING!
Make sure that the specified electrical ratings are not
exceeded under switchgear operating conditions. Keep
the manuals accessible to all personnel involved in
installation, operation and maintenance. The user’s
personnel are responsible for all matters regarding
safety in the workplace and correct use of the switchgear
1.3 Crucial information
Pay special attention to the information shown in the
manual by the following attention symbol:
After this symbol there are four different explanations
indicating what types of injuries or damages can be caused,
should the recommended precautions not be followed:
DANGER!
Identifies the most serious and immediate hazards which can cause
serious personal injury or death
WARNING!
Identifies hazards or unsafe practices which can result in serious
personal injury or death
CAUTION!
Identifies hazards or unsafe practices which can result in minor
personal injury or product or property damage
NOTE: Identifies important procedures or requirements
that, if not followed, can result in product or property
damage
WARNING!
Always follow the instructions in the manual and respect
the rules of good engineering practice (GEP)! Hazardous
voltages can cause serious injury or death! Disconnect
the power and earth live parts before proceeding with
any work on the switchgear. Follow the safety regulations
in force in the place of installation.
1.4 Seven Steps That Save Lives
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1. Safety
Complete the permit to work
and “Walk the Permit”
7
5Carry out earthing and short
circuiting
1Prepare for the work.
Do an on-site risk assessment
or hazard analysis
Clearly identify the work
location and equipment
2
3Disconnect all sources and
secure against reconnection
4Verify the absence of operating
voltage. Always test before you
touch
6Protect against adjacent
live parts and take special
precautions when close
to bare conductors

7INSTALLATION AND OPERATING INSTRUCTIONS
STEP 1 - Prepare for the work
Do an on-site Risk Assessment or Safe Job Analysis (SJA):
• Be in possession of a clear work order to
execute the work.
• The access or work permit to be
obtained
by a person, authorized for the specific
electrical system, where required.
• Ensure the competence of workers.
• Check for proper tools for the Job.
• Determine and select the proper arc-
rated Personal Protective Equipment
(PPE) and associated equipment as
defined in the risk assessment.
• Engage the person responsible for
electrical equipment or system, review
single-line, schematics, switching plans.
• Decide on the appropriate work methods
and Initiate the Permit To Work (PTW)
process.
STEP 2 - Clearly identify the work location
and equipment
Use your senses to identify problem areas. Define the work
area via barriers and barricading and label equipment.
Avoid distractions such as talking or texting on phone.
STEP 3 - Disconnect all sources and Secure
against reconnection
Perform switching, when required and only while wearing
the proper PPE identified in step 1 or observe switching
from a safe distance and apply Lockout/Tagout.
STEP 4 - Verify the absence of operating
voltage
Utilize only properly rated and inspected detection devices,
wear proper PPE identified in step 1.
Test voltage detection device / Test for voltage /Test
voltage detection device.
STEP 5 - Carry out earthing and short
circuiting
Close and lock earthing switch or apply portable equipment
for earthing and short-circuiting.

8SAFERING XT/SAFEPLUS XT
STEP 6 - Protect against adjacent live
parts and take special precautions when
close to bare conductors
Determine minimum approach distances, apply screening,
and when applicable, padlock both cable and buss bar
shutters, utilize proper insulated gloves and tools for
inadvertent contact potential.
STEP 7 - Complete the permit to work and
“Walk the Permit”
• Check isolation points.
• Ensure all circuits are isolated and secured.
Ensure all parties are integrated with the
Lockout/Tagout.
• Check the earths are properly applied.
• Answer specific questions from the work group.
• Ensure work can proceed without danger.
• Sign the PTW.
1.5 Required Certifications
Training levels
For installations and repairs it is required that the person to
execute the work shall have attended the necessary
training level, see bullets below. Person(s) that have
attended and are certified, are registered in the PCS2
(People Certification System) tool.
Level 1 (L1)
• Basic (Site Operators) for external customers.
• Introductory training for equipment operators.
Level 2 (L2)
• Basic (Equipment Maintainers and Site Operators) for
external customers.
• Advanced training for equipment maintainers and site
operators.
Level 3 (L3)
• Expert for ABB ELDS technicians, engineers, and
approved channel partners
• Certification to perform installation and commissioning,
maintenance and repairs, extension, upgrade and
retrofit, end of life services and replacements at site.
1.6 Disclaimer
When carrying out the installation work, you and your
company agree(s) that the installation is performed solely
at your own risk and that ABB shall not be liable for any
damage or loss of any kind, arising by law or otherwise,
including but not limited to loss of production, business
interruption, loss of profit, loss of revenue, loss of
agreements, loss of goodwill, costs resulting from
non-operation, increased expense of operation or
maintenance, property damage, loss of lives, personal injury,
any and all direct or indirect loss, consequential loss
or damage, resulting from the installation work and/or the
guidance provided by the installation instruction.
Discretion must be exercised when using the installation
instructions.
You and your company agree(s) to indemnify and hold ABB
harmless from and against any and all liabilities,
damages, losses, claims and actions from third parties in
respect of damage to, loss or destruction of property or
to personal injury and death or other claims arising from or
relating to the installation and/or the guidance
provided by the installation instructions.
If any doubt of how to perform the installation, please
search for the relevant training course from ABB.

9INSTALLATION AND OPERATING INSTRUCTIONS
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2. General description
SafeRing XT/SafePlus XT is a SF6insulated Ring Main Unit
for applications in medium voltage distribution networks.
SafeRing XT/SafePlus XT offers a sealed stainless steel tank
which contains all the live components and switching
functions. The transformer is protected by a vacuum circuit-
breaker.
The units are delivered from the factory ready for
installation.
SafeRing XT/SafePlus XT can be supplied as a 1, 2, 3, 4 or
5 -way unit in standard configurations with additional
equipment according to customer specifications.
Available configurations: Ex- +CC+, +CCC, +CCV, CCCC,
CCCV, +CCVVV+.
SafeRing XT/SafePlus XT has a unique flexibility due to its
extendibility and the possible combination of fully modular
and semi-modular configurations, with a maximum of 5
modules in one SF6tank. The units are delivered from the
factory ready for installation. Routine tests are carried out
on all units/ modules before dispatch.
No special tools are required for installing the equipment.
Available modules are:
• C - Cable switch
• D - Direct cable connection
• V - Vacuum circuit-breaker
• M -Metering cubicle
SafeRing XT/SafePlus XT with vacuum circuit-breaker in
compliance with IEC62271-100
With this unit the transformer will be protected by a vacuum
circuit-breaker combined with relays and current
transformers. The standard relays are based on digital
technology and do not require an external power supply.
Further information can be found in the product catalogue
for SafeRing XT/SafePlus XT.
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Figure 2.1
SafeRing XT/SafePlus XT 3-way unit +CCV+

10 SAFERING XT/SAFEPLUS XT
2.1 Outer assembly
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Figure 2.2
Front door open condition
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Figure 2.3
Front door Closed condition
1. Lifting angle/Lugs
2. Low Voltage compartment
3. Feeder description plate
4. Side Extension covers
5. Manometer
6. On/Off push buttons for Switch Disconnector
7. Voltage presence indicator
8. Switch Disconnector On/Off/Earth Indication
9. Switch Disconnector Operation handle access
10. Switch Disconnector Operation selector knob
11. Fault passage indicator
12. VCB Push button Open/Close
13. Spring Charging Indicator
14. VCB Open/Close Indicator
15. Voltage presence indicator
16. Disconnector On/Off/Earth Indication
17. Disconnector operation handle access
18. Protection relay
19. Disconnector operation selector knob
20. VCB/V Module Mimic
21. Switch Disconnector/C Module mimic
22. Cable compartment door
23. Bottom cover
24. Foundation bracket
25. ABB LOGO
26. Product Designation
27. Main door
28. Main door handle with padlock