Product manual
SafeRing / SafePlus 12-24kV
Installation and operating instructions
CONTENTS
1.
Safety
1.1 For your safety
1.2 Skilled personnel
1.3 Crucial information
4
4
4
4
2.
General description
2.1 Outer assembly
5
6
3.
Transport and handling
3.1 By receiving inspection
3.2 Storage
7
7
7
4.
5.
Technical data
4.1 Electrical data SafeRing
4.2 Electrical data SafePlus
8
8
8
Installation
5.1 Standard 3-way switchgear
5.2 3-way switchgear with base frame (AFL)
5.3 3-way switchgear with base frame (AFLR)
9
9
10
11
6.
Dimensions
13
7.
Internal arc classification (IAC)
14
8.
Cable compartment
8.1 Standard cable compartment
8.2 Arc proof cable compartment
8.3 Cable connection
17
17
17
18
9.
Extension of switchgear
9.1 External busbar
9.2 Side connection
19
19
19
Current and voltage transformers
19
Motor operation
20
Relay and current transformers
21
10.
11.
12.
13.
Pressure indicator
13.1 Gas pressure
13.2 Altitude
13.2.1 Adjustment of gas pressure
22
22
23
23
14.
Operation of the switchgear
14.1 Operating conditions
14.2 General warnings and precautions
14.3 Putting into service
14.3.1 Preparatory work
14.4 Start-up
24
24
25
25
25
25
2
15
Operation
15.1 Operation of cable switch
15.2 Operation of vacuum circuit-breaker
15.3 Operation of vacuum circuit-breaker 12kV/25kA, 24kV/20kA
15.4 Operation of fuse-switch disconnector
15.5 Installation and replacement of fuses
15.6 Fuse selection tables
15.6.1 Fuse selection table - CEF
15.6.2 Fuse selection table - CEF-S
16.
26
26
27
28
29
29
31
31
32
Metering module
33
17.
Capacitive voltage indicators
17.1 Voltage indicators VPIS
17.2 Voltage indicators VDS
17.3 Voltage indicators VDS-LRM
18.
Additional equipment 18.1 Low-voltage connections
18.2 Remote control and monitoring unit 34
34
35
35
19.
Cable testing 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
19.3 Procedure for testing directly on the cable
connector with the cable disconnected from
the switchgear
37
37
38
20.
21.
39
39
39
39
40
40
Service and maintenance
20.1 General warnings and cautions
20.2 Maintenance intervals
20.3 Inspection
20.4 Servicing
20.5 Repairs
36
36
36
38
Environmental certification 41
21.1 Life expectancy of product
41
21.2 Recycling capability
41
21.3 End-of-life41
3
1. SAFETY
1.1 For your safety!
–– Strictly follow these Installation and operating instructions.
–– Only install switchgear in indoor conditions according to IEC 62271-1 cl.2.1.
– – 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 gloves when installing or operating switchgear.
1.2 SKILLED PERSONNEL
All the installation, 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 installation 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 be called in to perform the servicing and repair work.
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 damage 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
4
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.
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.
CONTACT US
If you have any further questions about this manual, our field
service team will be pleased to help. See the back cover of
this manual for contact information.
2. GENERAL DESCRIPTION
SafeRing is a SF6-insulated ring main unit and SafePlus is a
SF 6-insulated compact switchgear for applications in medium
voltage distribution networks. SafeRing and SafePlus offer a
sealed stainless steel tank which contains all the live components and switching functions. The transformer is protected
either by a switch fuse combination or a vacuum circuitbreaker.
The units are delivered from the factory ready for installation.
SafeRing can be supplied as a 2, 3 or 4-way unit in standard
configurations with additional equipment according to customer specification.
Available configurations:
DeF, CCF, CCC, CCCF, CCFF, DeV, CCV, CCCC, CCCV,
CCVV.
SafePlus 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 SF 6-tank.
The units are delivered from the factory ready for installation.
SafeRing 3-way unit CCV
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
F - Switch fuse disconnector
D - Direct cable connection
De -Direct cable connection with earthing
V - Vacuum circuit-breaker
Sl - Busbar sectionalizer, load break switch
Busrise needed when SL on right side of SF6 tank
Sv -Busbar sectionalizer, vacuum circuit-breaker
Sv always together with busrise (total width=650 mm)
Be - Busbar earthing
M - Metering cubicle
V20, V25 - Vacuum circuit-breaker 20/25kA
Sv20, Sv25 - Busbar sectionalizer, vacuum circuit-breaker 20/25kA.
SafeRing / SafePlus with switch fuse combination in
compliance with IEC 62271-105.
With this unit the transformer will be protected by currentlimiting HV fuses in combination with a load break switch.
The load break switch is equipped with a stored spring energy
mechanism which can be tripped by the fuse striker pin.
SafeRing / SafePlus 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 and SafePlus, 1VDD006104 GB.
5
2.1 OUTER ASSEMBLY
5
17
6
7
8
9
1
� ��
SafePlus
2
3
4
18
10
11
12
13
15
14
16
6
Upper front cover
1. Manometer
2. Nameplate of module
3. Short circuit indicator
4. Capacitive voltage indication
5. Load break / earthing switch position indicator
6. Push buttons close/open operation
7. Charged spring indicator
8. Self-powered protection relay
9. Vacuum circuit-breaker position
Lower front cover
10. Nameplate of switchgear
11. Fuse blown indicator
12. Disconnector / earthing switch position indicator
13. Capacitive voltage indication
Cable compartment cover
14. Cable compartment cover standard
15. Cable compartment cover with inspection window
16. Support bar (removable)
Side cover
17. Lifting lug
18. Operating handle (suspended on the side wall, by
default on the right-hand side wall)
3. TRANSPORT AND HANDLING
The units are delivered from the factory ready for installation.
Weight table
Maximum weights for standard SafeRing
2-way DeV
300 kg
2-way DeF
300 kg
3-way CCV
450 kg
3-way CCF
450 kg
4-way CCCV
600 kg
4-way CCCF
600 kg
4-way CCVV
600 kg
4-way CCFF
600 kg
3-way CCC
450 kg
4-way CCCC
600 kg
SafePlus
Max angle 60o
Standard 1-way
150 kg
2-, 3- and 4-way
as for SafeRing
5-way
750 kg
M - metering module incl. trafo
250 kg
Mt - metering tariff module incl. trafo
350 kg
The weights are without additional equipment, except for
transformers for M- and Mt-modules
SafeRing / SafePlus is fitted with lifting lugs, but can also be
moved on a pallet with a forklift truck. Make sure to secure
the switchgear.
NOTE:
Use only approved slings when lifting.
Maximum angle on lifting lugs is set to 60o.
3.1 BY RECEIVING INSPECTION
Upon receiving the SafeRing / SafePlus please check that the
delivered equipment has not been damaged during transport.
If any such damage has occurred, a claim must be submitted
to the carrier immediately.
After unpacking, the following must be checked:
1. Operating handle – one piece should be included, normally
fixed on right-hand side.
2. Check that the pointer on the pressure indicator is in the
green area.
3. Carry out a function test on the mechanical parts.
4. Visual check of the switchgear. Any faults or omissions must be reported immediately to
the supplier.
3.2 STORAGE
SafeRing / SafePlus must be stored under cover in a dry and
well ventilated area until it is installed and put into operation.
7
4. TECHNICAL DATA
4.1 ELECTRICAL DATA SAFERING
C-module
SafeRing
Switch
disconnector
Rated voltage
kV
F-module
Switch-fuse
combination
Earthing switch
V-module
Vacuum
circuit-breaker
Earthing switch
Earthing switch
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
Power frequency withstand voltage kV
286)/38/50
286)/38/50
286)/38/50
286)/38/50
286)/38/50
286)/38/50
Impulse withstand voltage
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
kV
Rated current
A
630/630/630
active load
A
630/630/630
closed loop
A
670/670/670
off load cable charging
A
141/141/141
off load transformer
A
earth fault
A
205/160/160
earth fault cable charging
A
117/91/91
200/200/200
2001)
Breaking capacities:
short-circuit breaking current
Making capacity
1)
6)
kA
kA
Short time current 0,5 sec
4)
20/20/20
3)
52,5/40/40
52,5/40/40
see
2)
see
2)
16/16/16
12,5/12,5/12,5
kA
Short time current 1 sec
4)
kA
Short time current 3 sec
5)
kA
40/40/40
40/40/40
16/16/16
5/5/5
21/16/16
16/16/16
21/16/16
16/16/16
2)
Depending on the current rating of the fuse-link
Limited by high voltage fuse-links 3) Maximum rating for bushings Interface A (200 series plug-in)
Maximum rating for bushings Interface B (400 series plug-in) 5) Maximum rating for bushings Interface C (400 series bolted)
GOST version is available with 42kV power frequency withstand voltage
4.2 ELECTRICAL DATA SAFEPLUS
C-module
SafePlus
F-module
V-module
Switch
disconnector
Earthing
switch
Switch-fuse
combination
Earthing switch
Vacuum
circuitbreaker
Earthing
switch
V20/V25 module
Vacuum
circuitbreaker
Earthing
switch
Rated voltage
kV
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/17,5/24
12/24
12/24
Power frequency withstand voltage
kV
281)/38/50
281)/38/50
281)/38/50
281)/38/50
281)/38/50
281)/38/50
281)/50
281)/50
95/95/125
95/95/125
95/95/125
95/95/125
95/95/125
95/125
95/125
Impulse withstand voltage
kV
95/95/125
Rated current
A
630/630/630
closed loop
A
650/650/650
off load cable charging
A
140/140/140
off load transformer
A
earth fault
A
205/160/160
earth fault cable charging
A
117/91/91
short-circuit breaking current
kA
200
630/630/630
2)
630/630
Breaking capacities:
Making capacity
1)
4)
7)
8
kA
20/20/20
65/52,5 /52,5
4)
62,5/52,5 /50
4)
Short time current 0,5 sec 5)
kA
Short time current 1 sec
6)
kA
25/-/-
25/-/-
Short time current 3 sec
7)
kA
25/214)/21
25/214)/21
see
3)
see
3)
21/16/16
12,5/12,5/12,5
52,5/40/40
25/20
25/20
52,5/40/40
65/50
62,5/50
25/21
25/21
21/16/16
25/21
25/21
16/16/16
5/5/5
16/16/16
21/16/16
GOST version is available with 42kV power frequency withstand voltage 2) Depending on the current rating of the fuse-link 3) Limited by high voltage fuse-links
Tested at 15,2 kV 5) Max. rating for bushings Interface A (200 series plug-in) 6) Max. rating for bushings Interface B (400 series plug-in)
Max. rating for bushings Interface C (400 series bolted)
5. INSTALLATION
NOTE
The floor must be well leveled and the unit must be
fixed by means of anchor bolts in accordance with
the dimensional drawing for the number of modules
or units as appropriate.
NOTE
The tools required for installation and maintenance
of the switchgear are specified in the tool list in
chapter 20.6.
The tolerance of the evenness is maximum 1 mm per meter.
5.1 STANDARD 3-WAY SWITCHGEAR
Unit
1-way
A
B
298
C
337
371
2-way
623
662
696
3-way
948
987
1021
4-way
1273
1312
1346
5-way
1598
1637
1671
9
5.2 3-WAY SWITCHGEAR WITH BASE FRAME (AFL)
Unit
A
B
C
1-way
NA
NA
NA
2-way
623
662
696
3-way
948
987
1021
4-way
1272
1312
1346
5-way
1597
1637
1671
10
5.3 3-WAY SWITCHGEAR WITH BASE FRAME (AFLR)
indicates cable entry
Unit
A
B
C
1-way
NA
NA
NA
2-way
623
662
696
3-way
948
987
1021
4-way
1273
1312
1346
5-way
1598
1637
1671
81/87*
Distance between two units which are connected to each other by means of external busbars
*) Top extension: 8 mm / 81 mm
Side extension: 14 mm / 87 mm
8/14*
11
1626
1786
AFLR baseframe
* Dimensions for 290 mm baseframe
Standard switchgear installed on cable
trench
12
39
Base frame, height 450 mm
885
1045
38
38
39
Base frame, height 290 mm
Low version switchgear installed on cable
trench
6. DIMENSIONS
without low
voltage
compartment or
top entry box
with
top entry box
(124 mm)
with low voltage
compartment
(470 mm) *)
with low voltage
compartment
(700 mm) *)
450 mm base frame
Non IAC/IAC AFL with
290 mm base frame
Non IAC/IAC AFL with
without base frame
Non IAC/IAC AFL
450 mm base frame
IAC AFLR with
Lower version switchgear
290 mm base frame
IAC AFLR with
450 mm base frame
Non IAC/IAC AFL with
290 mm base frame
Non IAC/IAC AFL with
without base frame
Standard switchgear
Non IAC/IAC AFL
Height (mm)
Standard
1336
1626
1786
2002
2002
1100
1390
1550
Top connection without dead ends
1466
1756
1916
2002
2002
1230
1520
1680
Top connection with dead ends
1561
1851
2011
2002
2002
1325
1615
1775
External busbars
1591
1881
2041
2002
2041
1355
1645
1805
Busbar cover
1651
1941
2101
2002
2101
1415
1705
1865
Standard
1460
1750
1910
2002
2002
1224
1514
1674
Top connection without dead ends
1466
1756
1916
2002
2002
1230
1520
1680
Top connection with dead ends
1561
1851
2011
2002
2011
1325
1615
1775
External busbars
1591
1881
2041
2002
2041
1355
1645
1805
Busbar cover
1651
1941
2101
2002
2101
1415
1705
1865
Standard
1806
2096
2256
2096
2256
1570
1860
2020
Top connection without dead ends
1806
2096
2256
2096
2256
1570
1860
2020
Top connection with dead ends
1806
2096
2256
2096
2256
1570
1860
2020
External busbars
1806
2096
2256
2096
2256
1570
1860
2020
Busbar cover
1806
2096
2256
2096
2256
1570
1860
2020
Standard
2036
2326
2486
2326
2489
1800
2090
2250
Top connection without dead ends
2036
2326
2486
2326
2486
1800
2090
2250
Top connection with dead ends
2036
2326
2486
2326
2486
1800
2090
2250
External busbars
2036
2326
2486
2326
2486
1800
2090
2250
Busbar cover
2036
2326
2486
2326
2486
1800
2090
2250
*) For V-module 12kV/25kA and 24kV/20kA height of low voltage compartment is 570 / 800 mm, so 100 mm has to be added to the total switchgear heights in the table
13
7. INTERNAL ARC CLASSIFICATION (IAC)
During development of all ABB products, focus is put on
personnel safety. This is why the SafeRing/SafePlus portfolio
was designed and tested for a variety of internal arc scenarios
in order to withstand an internal arc of the same current level
as a maximum short circuit current. The tests show that the
metal enclosure of Safering/SafePlus switchgear is able to
protect personnel standing close to the switchgear during an
internal arc fault.
Causes and effects of IAC
An internal arc is a highly unlikely fault, although it can theoretically be caused by various factors, such as:
−− Insulation defects due to quality deterioration of the
components. The reasons can be adverse environmental
conditions and a highly polluted atmosphere.
− − Inadequate training of the personnel in charge of the installation, leading to incorrect installation of the cables.
− − Breakage or tampering of the safety interlocks.
−− Overheating of the contact area, e.g. when the connections
are not sufficiently tightened.
−− Short circuits caused by small animals that have entered
into the cable compartment (i.e. through cable entrance).
The energy produced by the internal arc causes the following
phenomena:
−− Increase of the internal pressure.
− − Increase of the temperature.
− − Visual and acoustic effects.
− − Mechanical stresses on the switchgear structure.
− − Melting, decomposing and evaporation of materials.
kA2 s
Melting of
Steel
Melting of
Copper
Melting of
Cables
0
100
200
500 ms
Arc duration and damage caused
Tested according to IEC standard 62271-200
The capability of SafeRing/SafePlus switchgear to withstand
an internal arc is proven by the type test according to Internal arc classification (IAC) as described in the standard IEC
62271-200 as follows:
Accessibility: A, B or C (switchgear)
A=Accessible to authorized personnel only
B=public access
C=not accessible due to installation
F-Front=Access from the front
L-Lateral=Access from sides
R-Rear=Access from the rear
R
L
All test specimens passed the following test criteria according
to the standards:
− − Correctly secured doors and covers do not open
− − No fragmentation of the enclosure occurs within the time
specified for the test. Projection of small parts, up to an
individual mass of 60 g are accepted
−− Arcing does not cause holes in the enclosure of the switchgear up to a height of 2 m
− − Indicators do not ignite due to the effect of hot gases
− − The enclosure remains connected to its earthing point
14
L
F
When installing Ring Main Unit or Compact Switchgear
with Internal Arc Classification AFL with ventilation behind the switchgear, the following must be considered:
− − Unit must be equipped with arc proof cable covers.
−− Distance from floor to roof must be minimum 2400 mm
− − Distance from back of unit to wall must be 100 mm
− − Arc shields with height 650 mm must be mounted
− − If unit is freestanding (i.e. distance from back of unit to wall
exceeds 100 mm), the area behind the unit must be restricted and not accessible.
*
WARNING
Distance from side wall: 20 mm. If installed more
than 20 mm from sidewall, an arc shield is required. For easier installation, it is recommended
that any switchgear requiring arc shields is installed minimum 300 mm from sidewall.
* Arc shield.
Height of arc shield for M-module is
1317 mm
20 - 300 mm
Marked area is restricted, but installation is allowed if mounting of arc shield is feasible.
For installation of switchgear with Internal Arc Classification AFL with ventilation down in cable trench, the
following must be considered:
− − Unit must be equipped with arc proof cable covers
− − Distance from floor to roof must be minimum 2000 mm
− − Distance from back of unit to wall must be 100 mm
− − Cable compartment back plate has to be mounted
− − Length of cable trench must be 2000 mm, with an opening
of minimum 0,5 m2
−− Minimum dimensions of cable trench are 230 x 355 mm
* 1100 mm version available as optional
solution
15
For installation of switchgear with Internal Arc Classification AFLR with ventilation upwards through exhaust
channel, the following must be considered:
− − Unit must be equipped with arc proof cable covers
− − Unit can be installed as free standing
− − Minimum height of ceiling: 2600 mm
− − Recommended distance from back wall is 100 mm
*) 290 mm base frame is available as
option
16
8. CABLE COMPARTMENT
CAUTION
In case of interlocked cable compartment, cover
can be opened / closed only when earthing switch
is in closed position.
NOTE
The tools required for installation and maintenance
of the switchgear are specified in the tool list in
chapter 20.6.
8.1 STANDARD CABLE COMPARTMENT
8.2 ARC PROOF CABLE COMPARTMENT
Removal of cable cover:
Removal of cable cover:
1. Loosen the screws on the cable cover, pull out and lift
cover off.
1. Lift handle to remove the cable cover, pull out and lift
cover up.
2. Removal of front section.
2. Removal of front section.
3. Front section removed.
A
3. Front section removed.
A
B
4. The mid-panel can be removed by unscrewing Ax2 and B.
B
4. The mid-panel can be removed by unscrewing Ax2 and B.
17
8.3 CABLE CONNECTION
SafeRing/SafePlus is equipped with external bushings which
comply with DIN47636T1 & T2/EDF HN 525-61 for termination of cables.
All bushings are situated in the same height from the floor and
are protected by the cable cover.
SafeRing / SafePlus can be supplied with the following bushings for the various type of cubicles:
Type of module
Bushings
C
F
V
D, De,
V20/25
Interface A
Interface C
X
X
X
X
X
X
Interface A with plug
200 series, In = 200A
Adjustable cable support bar (additional equipment).
Interface C with
M16 x 2 metric threads
400 series, In = 630A
Cable adapters
Adapters from following manufacturers are recommended:
ABB Kabeldon
Südkabel
Tyco Electronics Raychem
Power Systems
3M
Euromold
NKT cables
Please see supplier documentation for details.
DANGER
The manufacturer’s installation instructions must
be followed. Be sure to lubricate the bushings
thoroughly with the silicone supplied.
Use only isolated cable connections.
Where cables are not connected, the earthing
switch must be locked in closed position or the
bushings must be fitted with dead end receptacles
before the unit is put into operation.
18
Earthing bar
Cable clamp (additional equipment)
9. EXTENSION OF SWITCHGEAR
9.1 EXTERNAL BUSBAR
SafeRing and SafePlus can be equipped with an external
busbar. See separate instruction manual:
1VDD006006 GB.
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
� ��
SafePlus
9.2 SIDE EXTENSION
SafeRing and SafePlus can be equipped with a side extension. See separate instruction manual 1VDD006106GB.
10. CURRENT AND VOLTAGE TRANSFORMERS
SafeRing and SafePlus can be equipped with current and/or
voltage transformers.
Installation and maintenance manual: 1VLM000610
19
11. MOTOR OPERATION
Switches, vacuum circuit-breakers and earthing switches are
operated by mechanisms located behind the front panel. The
mechanisms for all the switches and breakers are operated
manually with the operating lever (standard), or are fitted with
motor operation (additional equipment).
Motor operation can be retrofitted. Use the manuals.
All units are delivered with drawings showing the electrical
circuits.
The earthing switch and the disconnectors can only be operated manually. The earthing switches have mechanisms to
achieve fault making capabilities.
Installation instructions cover the following modules:
3PKE mechanism for load break switch (C-module)
1VDD200001
3PKSE mechanism for load break switch (C-module)
1VDD200002
3PAE mechanism for fuse-switch (F-module) 1VDD200003
2PA mechanism for circuit-breaker (V-module) 1VDD200004
20
12. RELAY AND CURRENT TRANSFORMERS
A protection relay is installed in each vacuum circuit-breaker
module. The cables from the protection relay to the current
transformers are installed from the factory and are terminated
in the cable compartment ready for connection to the three
current transformers supplied.
75
CAUTION
Before installation:
Check that the three current transformers have
been delivered and that they are all of the same
type.
Check that the current transformers are of the correct type, with the correctly rated transformer ratio,
for the distribution transformer’s rated current and
for the adjustment range on the protection relay
(see protection relay manual).
60
107
107
Installation of current transformers
The cable shielding is led back through the center hole
and earthed, as shown in figure.
Each current transformer must be mounted onto its high
voltage cable before the cable termination is fitted.
WARNING
The earth shield on the cable must be led back
through the center hole in the current transformer
(see figure on left) and earthed on the earthing bar
in the cable compartment. A mounting plate for the
current transformers is fitted in the cable compartment.
After the current transformers have been installed in the unit,
the cables from the protection relay are connected. Consult
the manual supplied with the protection relay for a description
of the connections.
SafeRing / SafePlus with vacuum circuit-breakers are
delivered with self-powered OC / EF protection relay ABB type
REJ 603 V.1,5.
Relays with auxiliary voltage
SafePlus can be delivered with advanced protection relays:
− − REF615 (high LV-compartment with hinged door)
− − REF630 (high LV-compartment with hinged door)
− − REF611 (high LV-compartment with hinged door)
− − REF620 (high LV-compartment with hinged door)
Separate manuals with examples of settings
have been prepared for each of these protection relays.
21
13. PRESSURE INDICATOR
SafeRing / SafePlus is usually supplied with a pressure indicator in the form of a manometer. Additionally, it is possible
to fit a device for an electric signal if the pressure is low. This
requires auxiliary voltage supply.
13.1 GAS PRESSURE
SafeRing / SafePlus contain SF 6-gas with a nominal pressure
of 1,4 bar absolute at 20o C.
5. Remove the filling hose and connect the pressure device to
check the pressure inside the RMU/switchgear.
6. When the correct pressure of 1,4 bar absolute is obtained,
remove the adapter, check that the sealing between the
pressure indicator and the valve is smooth and clean, and
screw the pressure indicator to the RMU/ switchgear with
tightening torque max 45 Nm as shown below.
SafeRing / SafePlus are «sealed for life» and fitted with a
temperature-compensated pressure indicator.
Pointer in green area - unit has sufficient pressure.
Pointer in red area - pressure is too low.
WARNING
Operation when pressure is too low (pointer in
red area):
If pointer is in red area, the operation of the switchgear can not be done under live conditions (voltage
on). SF 6-gas needs to be topped up according to
instruction and the filling table on next page before
operation can be done under live conditions.
For more detailed description, see instruction manual 1VDD201603
WARNING
Replenishment of SF6-gas in SafeRing/SafePlus
Potential risk!
Operators must be trained and qualified for
SF 6-gas handling
The following equipment is needed: SF6-gas bottle with
manometer and reduction valve, bottle for recovery of
SF6/air mixture, adapter and pressure measuring device. It is
important that the pressure measuring device shows absolute
pressure. If you have a pressure measuring device showing
over-pressure, please contact ABB for instructions (NHP 408025).
1. Remove the front cover and if possible the top cover.
Unscrew the pressure indicator by unscrewing the hexagon
nut as shown on the figure at the right.
2. Screw the adapter to the valve. The tightening torque is
max 45 Nm.
3. Before connecting the hose from the gas bottle to the
adapter, the air in the hose must be removed by running
SF 6-gas through the hose. The SF6-gas must be recovered.
4. When gas is flowing into the RMU/switchgear, the manometer on the gas bottle has to be observed. When it shows
1,4 bar absolute at ambient temperature 20° Celsius, the
gas filling must be stopped. See table for filling pressure on
next page.
22
SF 6
Air
CAUTION
Spring-loaded
valve
Note! Screw/unscrew on this hexagonal
nut only. The pressure indicator can be
dismounted from the switchgear without SF6 leakage from the SF6 tank
1,45
1,4
30 oC
SF6-gas temp
Filing pressure Bar abs
1,35
20 oC
1,3
10 oC
1,25
1,2
Absolute filling
pressure
C
mbar
0
1305
5
1328
10
1352
15
1376
20
1400
25
1424
30
1448
35
1472
40
1496
o
1,15
1,1
2000
1500
500
0
1
1000
1,05
Altitude
13.2 ALTITUDE
Max height above sea level for installation without reducing
gas pressure is 1500 meters. In the interval from 1500 to
2500 meters, gas pressure has to be reduced according to
the above figure. For installation above 2500 meters, please
contact ABB for instructions.
Top screw for adjusting
pressure in higher altitudes
13.2.1
ADJUSTMENT OF GAS PRESSURE IN HIGHER ALTITUDES
Remove the front cover in order to get access to the top of
the manometer. On top of the manometer, a screw is situated. Open this screw carefully until the arrow starts moving.
When the movement stops, tighten the screw again. Now the
pressure is equalized and unless there is a leak (which is very
unlikely) the arrow will be positioned at the correct level.
23
14. OPERATION OF THE SWITCHGEAR
14.1 OPERATING CONDITIONS
Normal ambient conditions
SafeRing / SafePlus is generally equipped for operation/
service in normal indoor conditions in accordance with
IEC 62271-1.
The following limitations apply:
Ambient temperature
Max. temperature
Max. temperature (24-hour average)
Min. temperature
Humidity
Max. average relative humidity
measured over 24 hours
Max. average relative humidity
measured over 1 month
+40°C
+35°C
- 25°C
95%
90%
Special conditions
In accordance with IEC 62271-1, the manufacturer and enduser must agree about special operating conditions which
deviate from operation under normal conditions.
The manufacturer/supplier must be consulted in advance if
especially difficult operating conditions are involved. When
SafeRing/SafePlus is installed more than 1500 meters above
sea level, the atmospheric pressure will be lower and the
overpressure inside the tank will have to be reduced.
Airfreight
Units / modules transported by airfreight are delivered with
reduced overpressure. For topping up, please see procedure
for replenishment of SF6-gas.
24
Application of the X-ray regulations
One of the physical properties of vacuum insulation is the
possibility of X-ray emissions when the contact gap is open.
The specified test performed by the Physikalisch-Technische
Bundesanstalt (PTB) in Braunschweig demonstrates that the
local dosage output of 1 µSv/h at a distance of 10 cm from
the touchable surface is not exceeded when the rated voltage
is applied.
The results are as follows:
− − Testing of the switching device or the vacuum interrupter to
VDE 0671 part 100 or IEC 62271-100 at the relevant rated
power frequency withstand voltage may only be performed
by trained personnel observing the stipulations of the EU
basic standard (Stipulation 96/29/Euratom of the senate
from 13 May 1996 (ABI.L 159 from 29 June 1996)).
− − Application of the rated power frequency withstand voltage
specified for the switching device by VDE 0671 part 100 or
IEC 62271-100 is completely safe.
− − Higher voltages than the rated power frequency withstand
voltage or DC test voltage specified in VDE or IEC standards must not be applied!
− − The containment of the above mentioned local dosage
output with the vacuum interrupter in the open position
is dependent on maintenance of the specified distance
between the contacts (which is automatically ensured with
correct mechanism function and force transmission).
− − Safety clearances must be maintained.
WARNING
CONTROL AND MONITORING THE GAS
SafeRing / SafePlus is a pressure-sealed system
that normally does not require special inspections.
However, the gas pressure on the manometer
should always be checked prior to operation.
14.2 GENERAL WARNINGS AND PRECAUTIONS
DANGER
Do not walk on the top of switchgear units!
DANGER
Switchgear operations must be carried out with the
doors closed.
WARNING
Operations and any type of work must be carried
out by trained and specialized personnel who are
familiar with SafeRing/SafePlus and follow all the
safety regulations in accordance with the IEC Standards and other regulations in force, as well as any
local work regulations and instructions.
NOTE
The tools required for installation and maintenance
of the switchgear are specified in the tool list in
chapter 20.6.
14.3 PUTTING INTO SERVICE
14.3.1 PREPARATORY WORK
Before connection to the medium voltage network
The following work must be carried out in preparation for
putting into service:
− − Check the general condition of the switchgear for any
damage or defects.
− − Visually inspect the switching devices, cable bushings,
insulating parts, etc.
− − Check the paintwork for any damage and, where necessary, paint over scratches to avoid corrosion
− − Remove all residues of materials, foreign objects and tools
from the switchgear.
− − If necessary, clean the switchgear and remove any traces
of greasy or sticky dirt.
−− Correctly remount all covers etc. removed during assembly
and testing procedures.
− − Switch the auxiliary and control voltage on.
− − Carry out testing operations on switching devices either
manually or using electrical control, simultaneously observing the relative position indicators.
− − Check the mechanical and electrical interlocks for effectiveness, without using force.
− − Check the SF6 gas pressure of the tank. It needs to be at
green level before operating the switchgear.
−− Instruct local operators regarding the basic features for
correct use of the switchgear.
Other checkpoints
Depending on the allocation of responsibilities, it may also be
necessary to check the following equipment in the vicinity of
the switchgear:
− − Power cables
− − Auxiliary cables
− − Auxiliary power source
− − Remote control system
− − Complete earthing system
− − Switchgear installation room equipment
− − Switchgear installation room characteristics:
− − Pressure resistance in the case of an arc fault
− − Ventilation
− − Temperature
− − Humidity
14.4 START-UP
Instructions
− − Comply with all relevant safety regulations.
−− Ensure that the switch-disconnectors, circuit-breakers or
fuse-switches in the configuration are in the OPEN position.
−− Energize the power supply feeders.
−− Connect the switchgear step by step, observing the signals
and indicators.
−− Where necessary, check that the conductors are in phase
when there are several incoming feeder cables and switchgear sections.
−− Carry out all measurements and check that all functions
that depend on the medium voltage power supply are
connected.
−− Check there are no irregularities of any kind.
25
15. OPERATION
All switches can be operated with the included operating
handle. Internal mechanical interlocking between the switch disconnector/isolator and the associated earthing switches prevents incorrect operation. For detailed interlocking description, see dedicated overview for each module in catalogue
1VDD006104 GB.
15.1 OPERATION OF CABLE SWITCH
The operation of the switch disconnector/circuit-breaker and
earthing switches can be further interlocked by means of a
padlock.
The earthing switches are operated by a snap action
mechanism, which ensures fast closing. The earthing switch is
closed by turning the operating handle clockwise. Turning the
operating handle anti-clockwise opens the switch.
An anti-reflex system, standard on all operating handles,
prevents the immediate re-operation of switches.
Switch disconnector:
Close: Turn the operating handle clockwise.
Open: Turn the operating handle anti-clockwise.
Earthing switch:
Close: Turn the operating handle clockwise.
Open: Turn the operating handle anti-clockwise.
26
15.2 OPERATION OF VACUUM CIRCUIT-BREAKER
B
The isolator in the V-module can only be opened after the
circuit-breaker is opened. Then the circuit-breaker can be
closed for testing purposes.
A
C
D
Mechanical position indicators:
A: Green push-button closes the switch
B: Red push-button opens the switch
C: Mechanical position indication, circuit-breaker open
D: Mechanical position indication, earthing switch closed
Switch disconnector:
Close: Turn the operating handle clockwise.
Open: Turn the operating handle anti-clockwise.
Vacuum circuit-breaker:
Charging springs: Turn the operating handle clockwise
to charge the closing and the opening spring.
Close: Push the green button (A)
Open: Push the red button (B)
Earthing switch:
Close: Turn the operating handle clockwise.
Open: Turn the operating handle anti-clockwise.
27
15.3 OPERATION OF VACUUM CIRCUIT-BREAKER - 12kV/25kA, 24kV/20kA
Push button - vacuum circuit-breaker (OFF)
Push button - vacuum circuit-breaker (ON)
Indication spring charged / discharged
Vacuum circuit-breaker position indicator
Counter - closing and opening
operations
Spring-charging lever
Before operating of the vacuum circuit-breaker, check that
the spring is charged. If the spring is not charged, it can be
charged by means of the charging lever. The spring is fully
charged when the indicator turns to charged spring
(yellow symbol, about 10 operations needed to fully charge
the spring).
CAUTION
If the vacuum circuit-breaker is equipped with motor
operation (optional) it is not necessary to charge
the spring by hand. The motor starts charging the
spring automatically as soon as the auxiliary voltage is switched on.
Close: Push green (ON) button
Open: Push red (OFF) button
Note: the downstream disconnector is mechanically
interlocked with the vacuum circuit-breaker.
For operation of the downstream disconnector and earthing
switch, see previous page.
28
15.4 OPERATION OF FUSE-SWITCH DISCONNECTOR
WARNING
For correct function of F-module, it is required
to use fuses suitable for rating of protected
distribution transformer, see fuse selection
table on following pages. Use of improper
fuse can void the warranty.
B
15.5 INSTALLATION AND REPLACEMENT OF FUSE-LINKS
A red indicator below the fuse symbol on the lower front panel
indicates that at least one fuse-link has blown. Fuse links are
replaced as shown in the sequence of illustrations. Switchfuse configurations are supplied without fuse-links installed.
When installing fuse-links for the first time, follow the
sequence of illustrations 2-9.
A
1. Blown fuse indicator.
Switch-fuse disconnector:
Charging springs: Turn the operating handle clockwise to
charge the closing and the opening spring.
Close: Push the green button (A)
Open: Push the red button.(B)
The circuit-breaker can be tripped by the protection relay,
while in switch-fuse configurations the fuse switch disconnector can be triggered by the fuse striker pin if an over-current,
a short-circuit or an earth-fault occurs.
2. Close earthing switch by turning operating handle
clockwise.
29
3. Unscrew the fuse panel. 4. Tilt out the fuse panel to gain access to fuse canisters
- If safety wires are installed, make sure they are latched at
both ends before continuing to step 5.
7. Fix the fuses to the fuse cover using the contact screw.
This point is not applicable if fuse fastening is spring
based.
5. Applying the operating handle and turning anti-clockwise
opens the fuse canisters.
- After initial opening with safety wires, reattach the fuse panel for easy detachment of safety wires.
8.Turn the handle on the fuse cover clockwise to close and seal the fuse canister. Use the operating handle.
- The striker must point out from the fuse canister for the fuse to function properly.
9. Close the fuse panel.
The switches are ready for operation.
6. Pull out the fuse handle. The fuses are firmly fixed in the
fuse cover.
30
15.6 FUSE SELECTION TABLE
15.6.1 FUSE SELECTION TABLE - CEF
Fuse-link
100%
Transformer rating (kVA)
rated
voltage
Un (kV)
3
25
50
75
100
125
160
200
250
315
400
500
630
16
25
25
40
40
50
50
80
100
125
160
160
800
3,3
16
25
25
40
40
50
50
63
80
100
125
160
4,15
10
16
25
25
40
40
50
50
63
80
100
125
160
5
10
16
25
25
25
40
40
50
50
63
80
100
160
1000
1250
1600
7,2 kV
160
5,5
6
16
16
25
25
25
40
50
50
63
80
100
125
160
6
6
16
16
25
25
25
40
40
50
50
80
100
125
160
160
6,6
6
16
16
25
25
25
40
40
50
50
63
80
100
125
160
10
6
10
10
16
16
25
25
25
40
40
50
50
80
80
125
125
11
6
6
10
16
16
25
25
25
25
40
50
50
63
80
100
125
12
6
6
10
16
16
16
25
25
25
40
40
50
63
80
100
125
13,8
6
6
10
10
16
16
25
25
25
25
40
50
50
63
80
100
15
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
100
17,5
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
80
20
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
63
22
6
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
24
6
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
12 kV
17,5 kV
24 kV
- The table is based on using fuses type ABB CEF
- Normal operating conditions with no overload
- Ambient temperature -25oC - +40oC
Fuse-link
120%
Transformer rating (kVA)
rated
voltage
Un (kV)
25
50
75
100
125
160
200
250
315
400
500
630
3
16
25
25
40
40
50
63
80
100
125
160
3,3
16
25
25
40
40
50
63
80
80
100
125
4,15
10
16
25
25
40
40
50
63
80
80
100
125
5
10
16
25
25
25
40
40
50
63
80
80
125
800
1000
1250
1600
7,2 kV
160
5,5
6
16
16
25
25
25
40
50
50
80
80
100
125
160
6
6
16
16
25
25
25
40
40
50
63
80
100
125
160
125
6,6
6
16
16
25
25
25
40
40
50
63
80
80
100
10
6
10
10
16
16
25
25
25
40
40
50
63
80
80
125
11
6
6
10
16
16
25
25
25
25
40
50
50
80
80
100
125
12
6
6
10
16
16
16
25
25
25
40
40
50
63
80
100
125
13,8
6
6
10
10
16
16
25
25
25
25
40
50
50
80
80
100
15
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
100
17,5
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
80
20
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
80
22
6
6
6
6
10
10
16
16
16
25
25
25
40
50
50
63
24
6
6
6
6
10
10
16
16
16
25
25
25
40
40
50
63
12 kV
17,5 kV
24 kV
- The table is based on using fuses type ABB CEF
- Normal operating conditions with 20% overload
- Ambient temperature -25oC - +40oC
31
25
40
50
16
25
40
50
50
4.15
16
20
40
40
50
5
10
20
25
40
40
50
5.5
10
20
20
40
40
40
50
100
125
160
200
250
315
400
500
630
Fuse-link rating In (A)
6/12
„e“ (mm)
16
75
Fuse-link length
3
3.3
50
voltage (kV)
25
Fuse-link rated
Transformer rating (kVA)
voltage (kV)
Transformer rated
15.6.2 FUSE SELECTION TABLE - CEF-S
292
Catalogue No. CEF-S
Catalogue No.
CEF-S-TCU
10A:1YMB531011M0001
10A:1YMB531861M0001
16A:1YMB531011M0002
16A:1YMB531861M0002
20A:1YMB531011M0003
20A:1YMB531861M0003
25A:1YMB531011M0004
25A:1YMB531861M0004
40A:1YMB531011M0005
40A:1YMB531861M0005
50A:1YMB531011M0006
50A:1YMB531861M0006
10A:1YMB531012M0001
10A:1YMB531862M0001
16A:1YMB531012M0002
16A:1YMB531862M0002
16
20
25
40
40
50
16
20
25
40
40
50
50
10
10*
10
16
20
20
25
40
40
50
11
10*
10
16
20
20
25
40
40
40
50
12
10*
10
16
16
20
20
25
40
40
50
13.8
10*
10*
16
16
16
20
20
40
40
40
15
10*
10*
10
16
16
20
20
25
40
40
17.5
10*
10*
10
16
16
20
20
20
40
40
40
20
10*
10*
10*
10
16
16
20
20
25
40
40
20A:1YMB531012M0003
20A:1YMB531862M0003
22
10*
10*
10*
10
16
16
20
20
20
40
40
40
25A:1YMB531012M0004
25A:1YMB531862M0004
24
10*
10*
10*
10
16
16
16
20
20
25
40
40
40A:1YMB531012M0005
40A:1YMB531862M0005
40
80
125
160
160
200
250
250
300
400
400
800
at LV side (A)
10
10*
Max.gG fuse-link
6
6.6
10/24
442
The table was calculated according to standards IEC 60787
For ratings marked with “*” transformer maximum short-circuit
and IEC 62271-105. The following transformer and switchcurrent at LV side, transferred to HV side, is below fuse-link
gear work conditions were assumed:
minimum breaking current I3.
– – Maximum long-lasting transformer overload - 120%
The table above details the rated current of a particular fuse–– Magnetizing inrush current for transformers up to and link for a given line voltage and transformer rating. For differincluding 630kVA - 12 x In during 100ms
ent criteria, the fuse selection must be recalculated.
–– Magnetizing inrush current for transformers above 630kVA - 10 x In during 100ms
–– Standard ambient working conditions for SafeRing / SafePlus switchgear (most important: ambient temperature -25 ºC to +40 ºC),
32
16. METERING MODULE
DANGER!
Make sure there is no voltage in the busbars and
cable terminals and that the risk of reconnection
is eliminated in all units. Any remote control must
also be prevented.
Turn 90o to open
2. Use handles to lift door first up (vertical), then pull the door
out (horizontal).
Front door locked:
1.1 With padlock: Remove padlock, then turn blocking plates
90°.
1.2 With key lock: Unlock door by using the key for the panel
door.
3. Remove plastic cover which is placed behind front door.
4. Pay attention to label placed inside every metering module
DANGER
Always check voltage presence before start of any
work inside M-module
12kV with HV fuse
NOTE
Ensure that HV fuse / dummy
fuse is inserted properly into
both upper and lower fuse holder
24kV with HV fuse,
12 and 24kV with
dummy fuse
Max. tightening torque: 20 Nm
33
17. CAPACITIVE VOLTAGE INDICATORS
Each module of switchgears is equipped with a capacitive
voltage indicator in accordance with either IEC 61958 (VPIS)
or IEC 61243-5 (VDS).
17.1 VOLTAGE INDICATORS VPIS
VPIS indicators are used to indicate the presence of service
medium voltage.
WARNING
The indication of VPIS alone is not sufficient to prove that the system is dead: if operating procedures
make it mandatory, relevant voltage detectors
according to IEC 61243-1, IEC 61243-2 and IEC
61243-5 shall be used.
The energized state of the unit is indicated by a flashing light
with frequency of repetition of at least 1 Hz.
NOTE
Under very bright lighting it may be necessary to
improve visibility by additional means.
OPERATING TEMPERATURE
The VPIS will operate reliably over a temperature range of
–25° to +50°C.
PHASE COMPARISON AND TESTING OF VPIS
Each phase of the integrated voltage presence indicating
system has a connection point on the front panel, which can
be used to perform phase comparison and to test the voltage
presence indicator.
THRESHOLD VALUES FOR VOLTAGE PRESENCE
INDICATION
The indication corresponding to “voltage present” appears
when the actual line-to-earth voltage is between 45% of the
nominal voltage and the rated voltage. The indication corresponding to “voltage present” does not appear when the actual
line-to-earth voltage is less than 10% of the nominal voltage.
34
Capacitive voltage
indicator type HR
17.2 VOLTAGE INDICATORS VDS
VDS is used to detect the presence or absence of medium
voltage according to IEC 61243-5.
The VDS are based on the HR system. The system consists
of a fixed device, installed in the switchgear, coupled with a
mobile device to visually detect the presence or absence of
service voltage and phase balance and on which the indicator
lights are installed.
The state of voltage present is visually indicated with at least
1Hz repetition frequency.
The „voltage indicators“ which are recommended are the
VIM1 type used as a mobile device and VIM3 type used as a
fixed and mobile device. Both are made by Maxeta.
The „voltage indicators“ have a maximum operating voltage
threshold of 90 V and a maximum current threshold of 2.5 uA
at 50Hz.
OPERATING TEMPERATURE
The VDS works reliably with a temperature range from –25°C
to +50°C.
PHASE COMPARATOR
The phase comparator detects the balance or unbalance of
the phases between the interface and/or the test points. Detection is by means of a luminous indicator.
The recommended phase comparator of the VDS is the PCMHR type, made by Maxeta. It consists of a 1.4 m long test
cable.
Phase sequence test
THRESHOLD VALUES FOR VOLTAGE INDICATION
When the line-earth voltage is between 45% and 120% of
rated voltage, indication of „voltage present“ must appear.
The „voltage present“ indication must not appear when the
line-earth voltage is less than 10% of the rated voltage.
17.3 VOLTAGE INDICATORS VDS LRM
With VDS LRM system, the following can be indicated:
-Overvoltage
-Nominal voltage presence
-Isolation problems
-No voltage
-Broken lead indication (Optional feature)
Indication is done visually on the display.
Contact the product manufacturer for detailed descriptions
and manuals.
35
18. ADDITIONAL EQUIPMENT
18.1 LOW-VOLTAGE CONNECTIONS
Auxiliary contacts (2NO+2NC) can be supplied to indicate
switch positions on all switches/breakers. Access to the
low-voltage connections is obtained by removing the top
front panel. A shunt trip coil (AC or DC) can be fitted on the
transformer switch/breaker.
18.2 REMOTE CONTROL AND MONITORING UNIT
SafeRing can be equipped with an integrated remote control
and monitoring unit (see picture left).
This unit is pre-engineered and can be delivered and installed
as a retrofit solution or complete from factory.
SafePlus can have the same equipment but needs an additional low voltage compartment on top of the switchgear.
36
19. CABLE TESTING
Cable testing and locating cable faults are preformed in
three ways:
1. Directly on the testing points if they are fitted on the unit.
2.1 Directly on the cable connectors with the cable connected
to the switchgear.
2.2 Cable connector dismounted from the switchgear.
CAUTION
Cable testing must be carried out in accordance
with the cable manufacturer’s recommended
practice.
19.1 PROCEDURE FOR SWITCHGEAR WITH TEST
POINTS
1. Open switch disconnector.
2. Check voltage status.
3. If voltage is not present, close the earthing switch.
4.Connect the testing equipment on top of the testing points
which hold the earth bar (B).
5. Remove the earth triangle and perform the test. Respect
maximum test voltage levels as detailed in table below.
6. Refit the earth triangle. Tightening torque: 25 Nm.
7. Disconnect test equipment.
DANGER
Remember that the cable has two ends. Both ends
of the cable need to be isolated. This is typically
done by opening the disconnectors of SafeRing
SafePlus switchgears connected to the cable. The
free end of the tested cable needs to be secured
against accidental access.
CAUTION
Sometimes cable testing through the busbar of the
switchgear is preferred. This way several sections
of cable can be tested at the same time. This is
feasable, but remember the following limitations:
−− DC and VLF voltages must not be applied to
voltage transformers and surge arresters.
Maximum cable test voltages when testing cables using the cable test points of the switchgear
Rated voltage of the switchgear
Ur (kV rms)
12kV
17,5kV
24kV
Time
Power frequency cable test voltage
Uct(ac) (kV rms)
12kV
17,5kV
24kV
15 min.
DC cable test voltage
Uct(dc) (kV peak)
24kV
34,8kV
40kV
15 min.
VLF cable test voltage (Sine-wave, 0,1Hz)
Uct(VLF) (kV rms)
18kV
26,1kV
28kV
15 min.
VLF cable test voltage (Cosine-rectangular, 0,1Hz
Uct(VLF) (kV peak)
25,5kV
36,9kV
40kV
15 min.
37
19.2 PROCEDURE FOR TESTING DIRECTLY ON THE
CABLE CONNECTOR WITH THE CABLE CONNECTED TO
THE SWITCHGEAR
1. Open switch disconnector.
2. Check voltage status.
3. If voltage is not present, close the earthing switch.
4. Open cable compartment cover.
5. Connect test rod or test lead to cable connector, keeping the cable connected to the switchgear.
6. Open earthing switch and perform the test. Respect maximum test voltage levels as detailed in table
below.
7. Close the earthing switch.
8. Disconnect the test equipment.
9. Complete the cable connector with insulating plugs.
10. Refit cable compartment cover.
19.3 PROCEDURE FOR TESTING DIRECTLY ON THE
CABLE CONNECTOR WITH THE CABLE DISCONNECTED
FROM THE SWITCHGEAR
1. Open switch disconnector.
2. Check voltage status.
3. If voltage is not present, close the earthing switch.
4. Open cable compartment cover.
5. Remove cable connector from the switchgear.
6. Connect test rod or test lead to cable connector.
7. Perform the test respecting maximum test voltage levels as
detailed in instructions from cable supplier and cable connector supplier.
When the cables are disconnected at both ends, the cable
testing is independent from the switchgear. Procedures and
test values are determined by the cable, cable terminations
and test equipment. Test procedure and methods must
follow recommendations and limitations related to the
cable, cable terminations and test equipment.
8. Disconnect test equipment.
9. Refit cable connector to switchgear.
10. Refit cable compartment cover.
Maximum cable test voltages when testing directly on the cable connector with the cable connected to the switchgear
Rated voltage of the switchgear
Ur (kV rms)
12kV
17,5kV
24kV
Time
Power frequency cable test voltage
Uct(ac) (kV rms)
12kV
17,5kV
24kV
15 min.
DC cable test voltage
Uct(dc) (kV peak)
24kV
34,8kV
48kV
15 min.
VLF cable test voltage (Sine-wave, 0,1Hz)
Uct(VLF) (kV rms)
18kV
26,1kV
36kV
15 min.
VLF cable test voltage (Cosine-rectangular, 0,1Hz
Uct(VLF) (kV peak)
25,5kV
36,9kV
51kV
15 min.
38
20 SERVICE AND MAINTENANCE
20.1 GENERAL WARNINGS AND CAUTIONS
WARNING
Pay attention to the following safety warnings:
Preparing the switchgear for safe assembly
1. For each case, set safe working conditions with
the utility safety officer.
2. Make sure that national safety regulations are
followed.
3. Make sure there is no voltage in the busbars
and cable terminals and that the risk of reconnection is eliminated in all units. Any remote control
must also be prevented.
4. Make sure that auxiliary circuits are also disconnected from all possible power supply sources
(including instrument transformers)
TOOLS REQUIRED
− − Tool list as specified under chapter 20.6
− − Vacuum cleaner
− − Cleaning cloths
− − Mild alkaline cleaning agent
- Do not use trichloroethane, carbon carbotetrachloride or
any kind of alcohol, etc. for cleaning
− − Clean water
−− Silicone liquid
- In special cases, insulating surfaces can be covered with
a thin layer of silicone liquid such as DC200/100CS or
similar
− − Instruction manuals
− − Test equipment
MAINTENANCE INSTRUCTIONS
Maintenance serves for preserving trouble-free operation and
achieving the longest possible working life of the switchgear.
It comprises the following closely related activities:
− − Inspection: Determination of the actual conditions
− − Servicing: Measures to preserve the specified conditions
− − Repairs: Measures to restore the specified conditions
The time intervals for maintenance work to be carried out
always depend on the operating conditions of the switchgear
and, above all on the mode of operation, the number of rated
and short-circuit current switching operations, ambient temperature, pollution, etc.
The maintenance intervals and measures to be taken that are
given in table below are recommended for SafeRing/SafePlus
under normal service conditions. Three year intervals are recommended for all maintenance measures in more demanding
conditions (such as areas with high pollution levels).
OTHER IMPORTANT INSTRUCTION MANUALS
The operation of all protection relays should be checked in
accordance with the manufacturer’s instructions.
All components in the SF6 tank are maintenance-free for the
declared life expectancy of the product. The tank is made of
stainless steel.
20.2 MAINTENANCE INTERVALS
We recommend carrying out the maintenance work at the
following intervals:
2)
Activity performed
According to section
Time interval in years
Inspection
19.3
5
Service
19.4
As required
Repairs
19.5
As required
2)
3)
Under more demanding service conditions, we recommend shortening
this interval appropriately.
3)
According to the results of the inspection.
Other services may be required, as when max number of operations is reached, please contact ABB to order inspection.
NOTE
Under abnormal operating conditions (including
adverse climatic conditions) and/or particular
environmental conditions (among which, heavy
pollution and aggressive atmosphere), inspection
at shorter intervals may be necessary.
20.3 INSPECTION
GENERAL ASPECTS
Where necessary, the working area must be isolated and
secured against accidental re-connection before inspection,
in accordance with the “Safety Regulations” specified by IEC
standards and corresponding national standards. The switchgear condition must be monitored by regular inspections.
Under normal operating conditions, inspections should be
carried out once every fifth year by suitably trained personnel.
INSTRUCTIONS
Carry out the following inspections:
− − Visually check for dirt, corrosion and moisture.
− − Check for traces of discharges on insulating material parts.
− − If there are test points:
− − Visually check the contact points and surrounding
earthed surfaces.
− − If there are signs of pollution or dust, please clean the
area.
− − Check the operating pressure of the gas-insulated
switching devices where possible. Follow gas-chapter for
further instructions.
− − Check condition and life time of installed accessories and
auxilliary devices; change if necessary according to component data sheet.
− − If corrosion is observed on mechanisms, motors or other
accessories please contact ABB to evaluate if anything
needs to be replaced.
− − Check that there are no visible signs of, or damage from,
partial discharges.
−− There should not be any visible signs of overheated
connections.
−− All components should perform perfectly and any faulty
components must be replaced.
39
No discharge should occur on the surfaces of equipment at
the operating voltage. This can, for example, be detected by
characteristic noises, a clearly perceptible smell of ozone, or
visible glowing in the dark.
NOTE
Should partial discharges occur as a result of
condensation, application of a thin silicone film
over the surface concerned is often effective as a
temporary remedy. It is advisable to ask the ABB
after-sales service department for advice regarding
permanent solutions to this uncommon type of
problem.
20.6 TOOL LIST SAFERING/SAFEPLUS
NOTE
The following list of tools does NOT cover
tools needed for HV or LV cable work/handling
or testing.
The tools marked with an “X“ in the column
“Required“ are needed for installation and regular
maintenance work as described in chapter 20.
Tools
Required
Drill tools
REPAIR MEASURES
If any irregular conditions are detected, appropriate servicing
or repair measures must be taken.
14,4 Volt Drill with battery
LSV 034
Extra 14,4V battery
Charger - DC18RA
Drill heads Ø 1 -13 mm
20.4 SERVICING
INSTRUCTIONS
If the need for servicing measures is established during the
course of an inspection, proceed as follows:
1. Clean all parts (e.g motors and mechanisms) with a
vacuum cleaner and visually inspect them. Clean the
surfaces in general:
− − Lightly settled dry dust deposits: clean with a soft dry
cloth.
2. Perform a closing/opening operation on all disconnectors
and circuit-breakers, fuse switches, and earthing switches.
3. Connect the auxiliary control voltage, but ensure that no
remote signals can activate the components. Perform one
electrical operation sequence on all motor-operated devices and tripping mechanisms.
4. For maintenance of gas-pressure, follow gas-chapter for
further instructions.
5. Completely remove all rust from damaged paint work areas
on steel sheet and other steel parts by mechanical means,
e.g. with a wire brush, and apply appropriate anti-corrosion
treatment.
20.5 REPAIRS
NOTE
If the switchgear is damaged, contact ABB to evaluate necessary repairs. Some advanced repairs/
operations should be carried out only by ABB
service personnel.
Bits-set 59/S31
First Aid minikit
M4 tap
M5 tap
M6 tap
M16 tap
Adapter piece 7mm hex to 1/4“
Adapter piece 7mm hex to 3/8“
Adapter piece 7mm hex to 1/2“
1/2“ Extender, L = 10“ ( 25 cm )
1/2“ Long pipe - 17 mm
1/2“ Long pipe - 19 mm
1/2“ Long pipe - 22 mm
Hand tools
1/2“ Long ratchet L = 42 cm
X
1/2“ Pipe set - Content:
1/2“ ratchet L = 24 cm
1/2“ extender, L = 1 3/4“ ( 4,5 cm )
1/2“ extender, L = 2 1/2“ ( 6 cm )
1/2“ extender, L = 6“ ( 15 cm )
X
1/2“ universal joint L = 7 cm
10 mm 1/2“ pipe
X
11 mm 1/2“ pipe
12 mm 1/2“ pipe
13 mm 1/2“ pipe
X
14 mm 1/2“ pipe
X
15 mm 1/2“ pipe
16 mm 1/2“ pipe
Carry out repair work immediately after a defect has been
discovered.
CAUTION
Follow the maintenance instructions in the manuals
for the relative components.
17 mm 1/2“ pipe
19 mm 1/2“ pipe
X
21 mm 1/2“ pipe
X
22 mm 1/2“ pipe
X
24 mm 1/2“ pipe
X
27 mm 1/2“ pipe
30 mm 1/2“ pipe
32 mm 1/2“ pipe
40
X
18 mm 1/2“ pipe
Tools
Required
Adjustable wrench 10“
Extra tools
Head lamp - LED
Side cutting plier - ergo
X
Flashlight LED
Strippling plier
X
Multi-purpose service spray 5-56
Universal plier
Permanent Marker
Bits set with screwdriver handle
X
Small cable ties
3/8“ Long ratchet L = 50 cm
X
Large cable ties
L=203 x 2,5mm
L=375 x 7,6mm
3/8“ Pipe set - Content:
Multimeter - UT58B
3/8“ ratchet L = 24 cm
Insulation tape - Tesaflex 53948
3/8“ extender, L = 3“ ( 7,5 cm )
Working Gloves
3/8“ Bits holder
Specialist Cloth
8 mm 3/8“ pipe
Scotch-Brite
10 mm 3/8“ pipe
Silicon handling glove - Nitrile powder free
11 mm 3/8“ pipe
Hammer 12 oz
12 mm 3/8“ pipe
Clamp 300 x 100 mm
13 mm 3/8“ pipe
Bow saw nr. 10
14 mm 3/8“ pipe
Extra bow saw blades bi-metal 24T
15 mm 3/8“ pipe
Flat file
17 mm 3/8“ pipe
Round file
19 mm 3/8“ pipe
Knife
Bits PH 1
X
Bits PH 2
X
12““
300 mm
Bits FT 4
Bits FT 5,5
Bits PZ 1
Bits PZ 2
X
Bits HEX 5
X
Bits HEX 6
Bits TX 10
Bits TX 15
Bits TX 20
X
Bits TX 25
X
Bits TX 30
X
7 mm combination wrench
X
8 mm combination wrench
10 mm combination wrench
X
11 mm combination wrench
12 mm combination wrench
13 mm combination wrench
X
14 mm combination wrench
X
15 mm combination wrench
16 mm combination wrench
17 mm combination wrench
18 mm combination wrench
19 mm combination wrench
Screwdriver - Flat 1,2 x 8 x150
Screwdriver - Flat 1,2 x 6,5 x100
Screwdriver - Flat 0,5 x 3 x75
X
Screwdriver - Flat 1,2 x 5,5 x38
Screwdriver - Star PZ 2 - 38
Screwdriver - Star PZ 2 - 75
Hex key set
1,5 - 10 mm
41
21. ENVIRONMENTAL CERTIFICATION
21.1 LIFE EXPECTANCY OF PRODUCT
The product is developed in compliance with the requirements
denoted by IEC 62271-200. The design incorporates a life
span under indoor service conditions exceeding 30 years (IEC
62271-200 annex GG).
The switchgear is gas-tight with an expected diffusion rate of
less than 0.1 % per annum. Referring to the reference-pressure of 1.4 bar, the switchgear will maintain gas-tightness and a
gas-pressure better than 1.3 bar* throughout its designed life
span.
*) at 20oC.
21.2 RECYCLING CAPABILITY
Raw Material
Weight (kg)
% of total
weight
Recycle
Environmental effects & recycle/reuse processes
Iron
132,80
42,53
Yes
Separate, utilise in favour of new source (ore)
Stainless steel
83,20
24,93
Yes
Separate, utilise in favour of new source (ore)
Copper
43,98
14,09
Yes
Separate, utilise in favour of new source (ore)
Brass
2,30
0,74
Yes
Separate, utilise in favour of new source (ore)
Aluminium
8,55
2,74
Yes
Separate, utilise in favour of new source (ore)
Zinc
3,90
1,25
Yes
Separate, utilise in favour of new source (ore)
Silver
0,075
0,024
Yes
Electrolysis, utilise in favour of new source
Thermoplastic
5,07
1,63
Yes
Make granulate, re-use or apply as energy superior
additive in refuse incineration
Epoxy incl. 60% quartz
26,75
8,35
Yes
Grind to powder and use as high-grade energy additive in cement mill
Rubber
1,35
0,42
Yes
High-grade energy additive in refuse incineration
Dielectric oil
0,21
0,066
Yes
Reclaim or use as high-grade energy additive in refuse incineration
SF6 gas
3,24
1,04
Yes
ABB AS in Skien reclaims used SF6 gas
311,42
97,81
No
*Stickers, film foils, powder coating, screws, nuts, grease....
Total recyclables
Unspecified*
9,00
Total weight **
320
Packing foil
0,20
Yes
High-grade energy additive in refuse incineration
21,50
Yes
Re-use or use as energy additive in refuse incineration
Wooden pallet
100
**) All figures are collected from CCF 3-way unit with fuse canisters
21.3 END-OF-LIFE
ABB AS, Electrification Products division, is committed to
the protection of the environment and adhere to ISO 14001
standards. It is our obligation to facilitate end-of-life recycling
for our products.
There exist no explicit requirements for how to handle discarded switchgears at end-of-life. ABB’s recycling service is
according to IEC 1634 edition 1995 section 6: «End of life of
SF6 filled equipment» and in particular 6.5.2.a: «Low decomposition»: «No special action is required; non-recoverable
parts can be disposed of normally according to local regulations.»
42
We also recommend ABB’s website : http://www.abb.com/sf6
ABB AS, Electrification Products division in Skien is equipped
to reclaim SF6 gas from discarded switchgears.
43
For more information please contact:
ABB AS
Electrification Products division
P.O. Box 108, Sentrum
N-3701 Skien, Norway
Phone: +47 35 58 20 00
www.abb.com
Text and illustrations are not
binding. The right to make alterations
is reserved
©Copyright 2016 ABB
All rights reserved
1VDD005976 GB February 2016
Contact us