SHS2 Presentation, Dalmine – Italy - August, 2010
SHS2
Gas insulated switch–disconnector /
isolator
1VCP000048 – Rev. B, en – Presentation – 2010.09
© ABB Group
April 13, 2015 | Slide 1
SHS2
Main features

SF6-insulated Switch Disconnector - Isolator

Suitable for metal-enclosed secondary distribution
switchgear

Stainless steel enclosure

3 positions: LINE - OPEN - EARTH

Earthing switch with making capacity

Separate operation slots for Switch-disconnector
and Earthing Switch
Characteristics
Main Data
Rated voltage
kV
24
Power frequency withstand voltage (50-60 Hz/1 min) (*)
kV
50 (60)
Impulse withstand voltage (*)
kVp
125 (145)
Rated frequency
Hz
50/60
Rated Normal current (t.a. 40°C)
A
400/630
Short-time current - 1s
kA
12.5/16/20/25
Making capacity
kA
31.5/40/50/62.5
Gas absolute pressure (20 °C)
kPa
125
Distance between phases
mm
230
Electrical life (**)
Class E3
(line)
Class E1
(earth)
Mechanical endurance
Class M1 (**)
(*) withstand voltage between phase and earth and between phases (withstand voltage
between open contacts)
(**) According to IEC 60265-1, IEC 60129
SHS2
Basic dimensions (to fit 500mm/375mm width panels)
Caption:

Insolators;

Enclosure

Operating
mechanism

Rupture disk
495 (panels width 500)
371,5 (panels width 375)
1
1
4
2
3
1
SHS2
Three positions
Caption
Open
Line
1.Switching shaft
2
2.Fixed contact
3.Moving contact
4.Earthing
contact
3
Earth
4
1
SHS2
Stainless steel enclosure
EARTHED metallic segregation
between busbar and feeder
compartments

Maximum safety during maintenance
and operations in the cable or fuse
compartment even with busbars
energized

Reduced risk of short circuit between
phases or between the two insulators of
the same phase
SHS2
Operative mechanical version
T1 - T1M
T2-T2M
T3-V1
T4
On exceeding dead centre
x
--
--
x
Stored energy
--
x
--
--
Independent operation
(from operator)
x
x
--
x
Dependent operation
(from operator)
--
--
x
--
Switch disconnector +
Earthing switch
x
x
--
--
Isolator + Earthing switch
--
--
x
--
Spaced earthing switch only
--
--
--
x
Motorized operative mechanism
x
--
--
--
Opening coil
--
x
--
--
SHS2
Front plate
Caption:
5
1. Switch disconnector slot
2. Earthing switch slot
3. Interlock lever
4. Mechanical position
indicator
1
6
4
3
5. Voltage indicator
6. Key-locks
5
6
2
SHS2
Available key-locks
SHS2 equipped with T1 e T2 operative mechanism
SHS2/T1 - SHS2/T1/N - SHS2/T1M - SHS2/T1M/N - SHS2/T2 - SHS2/T2/N - SHS2/T2F - SHS2/T2F/N
Line operation
1 Free-key for Switch disconnector in open position
1 Free-key for Switch disconnector in close position
1 Free-key for Switch disconnector in close position
1 Free-key for Switch disconnector in open position
2 Free-keys for Switch disconnector in open position
2 Free-keys for Switch disconnector in close position
Earth Operation
1 Free-key for Earthing switch in open position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in open position
2 Free-keys for Earthing switch in open position
2 Free-keys for Earthing switch in close position
SHS2 equipped with T3 operative mechanism
SHS2/I - SHS2/I/N - SHS2/IF
SHS2/IB
1 Free-key for Isolator in close position
1 Free-key for Isolator in open position
1 Free-key for Isolator in open position
1 Free-key for Isolator in open position
1 Free-key for Isolator in open position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in close position
2 Free-keys for Earthing switch in close position
2 Free-keys for Earthing switch in close position
1 Free-key for Isolator in close position
1 Free-key for Isolator in open position
1 Free-key for Isolator in close position
SHS2 equipped with T4 operative mechanism
1 Free-key for Isolator in open position
SHS2/ES
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in open position
1 Free-key for Isolator in close position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in close position
1 Free-key for Earthing switch in open position
1 Free-key for Isolator in close position
1 Free-key for Earthing switch in close position
2 Free-keys for Earthing switch in close position
2 Free-keys for Earthing switch in close position
SHS2
Accessories
Fuse Holder





Spaced Earthing Switch




Line and Earth key locks
Auxiliary contacts (2NA+2NC for each position) (1)
Voltage indicators (3)
Frame with isolators or isolators with capacitive dividers (4)
Opening coil (24 – 48 – 110 – 220 Vdc/ac) (2)
Door lock
Motor operation (24 Vcc 48-110-220Vdc/Vac) for spring
operating mechanism)
Fuse adaptors (for fuse length e=192 mm and e=292mm)
Spaced earthing switch (making capacity 2,5kA)
(1) On T2 (stored energy) operative mechanism when the opening coil is required for switch
disconnector in closed position a maximum of 1NO+1NC auxiliary contacts are available
(2) Available only on T2 operative mechanism
(3) Require accessory (4)
SHS2
Accessories
Caption:
1. Line key locks
2. Earth key locks
5
3. Auxiliary
contacts
3
4. Opening coil
5. Voltage
indicators
4
1
5
2
1
2
3
SHS2
For circuit-breaker unit completion
1.
HD4/R:
Circuit
breaker
gas
insulated;
1
2.
VD4/R:
Circuit
breaker
vacuum
insulated
2

Lateral operation mechanism

230 mm pole distance

Protection relay on board:
•
PR 521 Self-supplied (50-51-51N)
•
REF 601 (50-51-50N-51N)
UNIMIX P3
Width 500 and 375 mm
UNIMIX P2
Width 500 and 375 mm
UNIMIX ASR
Width 500 and 375 mm
SHS2/ES
SHS2/IB
SHS2/IF
SHS2/I SHS2/I/N
SHS2/T2MF SHS2/T2MF/N
SHS2/T2F SHS2/T2F/N
SHS2/T2M SHS2/T2M/N
SHS2/T1 SHS2/T1/N SHS2/T2
SH2/T2/N SHS2/T1M SHS2/T1M/N
SHS2
For panel solutions equivalent to UniMix type
UNIMIX M
Width 500 mm
UNIMIX P1F
Width 750 mm
UNIMIX A
Width 500 mm
© ABB Group
April 13, 2015 | Slide 14