1. SHS2 Gas insulated switch–disconnector / isolator
SHS2 Presentation, Dalmine – Italy - August, 2010
SHS2 Gas insulated switch–disconnector / isolator
1VCP – Rev. B, en – Presentation –
© ABB Group
April 14, 2017 | Slide 1

2. 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

3. 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 , IEC 60129

4. 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 2 4 3 1

5. SHS2 Three positions Open Line Earth 2 1 3 4 Caption Switching shaft
Fixed contact
Moving contact
Earthing contact
Open
Line 1 2 3
Earth 4

6. 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

7. SHS2 Operative mechanical version
T1 - T1M
T2-T2M
T3-V1 T4
On exceeding dead centre x --
Stored energy
Independent operation (from operator)
Dependent operation (from operator)
Switch disconnector + Earthing switch
Isolator + Earthing switch
Spaced earthing switch only
Motorized operative mechanism
Opening coil

8. SHS2 Front plate 4 1 3 5 6 2 Caption: Switch disconnector slot
Earthing switch slot
Interlock lever
Mechanical position indicator
Voltage indicator
Key-locks 2 6 3 1 4 5

9. SHS2 Available key-locks

10. SHS2 Accessories Line and Earth key locks
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 Vdc/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)

11. SHS2 Accessories Caption: Line key locks Earth key locks5 3
Caption:
Line key locks
Earth key locks
Auxiliary contacts
Opening coil
Voltage indicators 4 1 2 1 2 3

12. SHS2 For circuit-breaker unit completion
HD4/R: Circuit breaker gas insulated;
VD4/R: Circuit breaker vacuum insulated
Lateral operation mechanism
230 mm pole distance
Protection relay on board:
PR 521 Self-supplied ( N)
REF 601 ( N-51N) 1 2

13. SH2/T2/N SHS2/T1M SHS2/T1M/N
SHS2 For panel solutions equivalent to UniMix type
SHS2/T1 SHS2/T1/N SHS2/T2
SH2/T2/N SHS2/T1M SHS2/T1M/N
SHS2/T2M SHS2/T2M/N
SHS2/T2F SHS2/T2F/N
SHS2/T2MF SHS2/T2MF/N
SHS2/I SHS2/I/N
SHS2/IF
SHS2/IB
SHS2/ES
UNIMIX P3
Width 500 and 375 mm
UNIMIX P2
Width 500 and 375 mm
UNIMIX ASR
Width 500 and 375 mm
UNIMIX M
Width 500 mm
UNIMIX P1F
Width 750 mm
UNIMIX A
Width 500 mm

14. © ABB Group
April 14, 2017 | Slide 14 14