MV indoor air insulated
wall mounted Load Break Switch
TSC
MV indoor air insulated wall
mounted Load Break Switch
The Medium Voltage air insulated load break switch is
designed to be used in concrete substations and allow to
estinguish the arc by means of a self-generated air blast
produced by an internal piston coaxial to the stand off
insulator. The switch types differ according to the
required use and installation (see table below).
Designed, manufactured and tested in accordance with
the following applicable standards:
Switchboard and apparatus: IEC 62271-200
And for 24 kV:
TA
TB
TAE
TBE
V
VE
VS
ENEL DY500 General specifications for Indoor
LBS
ENEL DY1050 for motorized commands
ENEL DY515 for motorized command
ENEL DY1000 for test
Only for load opening and closing operations and arranged with the upper earthing switch
(manual mode)
Only for load opening and closing operations and arranged with the lower earthing switch
(manual mode)
Only for load opening and closing operations and arranged with the upper earthing switch
(motorized mode 24 Vdc)
Only for load opening and closing operations and arranged with the lower earthing switch
(motorized mode 24Vdc)
Only for load opening and closing operations as well as for the protection against over
currents (manual mode)
Type V adding fuse-link supporting base, and can be fitted with upper and lower earthing
switches (manual mode)
Type V adding fuse-link supporting base, and can be fitted with lower earthing switches
(manual mode)
Elettropicena Sud s.r.l.
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 1/6
MV indoor air insulated wall
mounted Load Break Switch
TSC
Rated Voltage
12 kV
400 A
400 A
12.5 kA
16 kA
20 kA
31,5 kA
40 kA
50 kA
31,5 kA
40 kA
50 kA
Rated Current
Short time current withstand 1 second
Peak current withstand
Rated making capacity on short-circuit fault
Breaking capacity:
No Load cables
10,0 A
No Load Transformer
16,0 A
Motorization
Power frequency withstand voltage (50/60 Hz, 1min)
Towards the ground and between phases
28 kV
Across the isolating distance
Attraverso la distanza di isolamento
32 kV
Rated lighting impulse withstand voltage
Towards the ground and between phases
75 kV
Across the isolating distance
85 kV
Environment conditions
Indoor temperature operating conditions
Storage temperature conditions
Humidity
Max Altitude
Mechanical operations
Estimated weight (kg)
TA
63
TB
63
TAE
68
TBE
68
VS
83
VE
88
Elettropicena Sud s.r.l.
Technical data
17.5 kV
24 kV
400 A
400 A
400 A
400 A
12.5 kA
12.5 kA
16 kA
16 kA
20 kA
20 kA
31,5 kA
31,5 kA
40 kA
40 kA
50 kA
50 kA
31,5 kA
31,5 kA
40 kA
40 kA
50 kA
50 kA
10,0 A
16,0 A
24 Vdc
10,0 A
10,0 A
38 kV
50 kV
45 kV
60 kV
95 kV
125 kV
110 kV
145 kV
From -5°C to 45°C
From -15°C to 45°C
0% to 90%
0 to 1000 m
1000
75
75
80
80
96
100
75
75
80
80
96
100
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 2/6
MV indoor air insulated wall
mounted Load Break Switch
DIMENSIONS
TYPE VS 24 kV
TYPE VS 12 kV
Elettropicena Sud s.r.l.
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 3/6
MV indoor air insulated wall
mounted Load Break Switch
TYPE VE 12/24 kV
TYPE TBE 24 kV
Elettropicena Sud s.r.l.
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 4/6
MV indoor air insulated wall
mounted Load Break Switch
INSPECTION, HANDLING AND STORAGE, ACCEPTANCE INSPECTION
At the moment of the delivery of switch-disconnector, it is recommended to verify:
• The correspondence of delivery documents
• The integrity of packaging and of the switch-disconnector
In case of transport damages, contact us within 30 days.
Storage
If not immediately used, store the switch-disconnectors in a well protected, dry and ventilated place, positioning them
according to the instructions on packaging. Do not absolutely lift the load break switch through insulators.
Handling
Be careful when handling switch-disconnectors, avoiding bumps and accidental solicitations and, in the case of use of
fork lift, put it on the forks according to the right position as shown on packaging. Do not absolutely lift the load
break switch through insulators.
Installation and use
• Before installing, verify the integrity of the switch-disconnector.
• Re-connect levers for the switch-disconnector operating (rif 1)
• Re-connect lock rod of upper earthing switch (only type VE) (rif. 2)
• Fix with hinge the levers for insulated rod operation on switch-disconnector and earthing switch operating
shafts (switch-disconnector rod l=400 mm, earthing switch rod l=200 mm); the switch is pre-fitted for setting
up the levers for insulated rod operation on both the sides (rif.3)
• Connect line-earth interlock as follows:
Open earth switch, insert interlock tubular on frame hole, with the button hole turned to the earth
shaft fix tubular to crank with hinge and security ring (rif.4)
Fix the upper and lower extraction mechanism on each fuse-link, to permit fuse’s change using
insulated rod (rif. 5)
TYPE VS 12/24 kV
Fitting up the switch disconnector
Fit up the switch-disconnector directly on the wall or to a sheet-steel, verify that the surface is perfectly plain to avoid
mechanical stress and torsions when screwing bolts in fixing holes.
Electric connections
To put on correctly main electric connections:
Elettropicena Sud s.r.l.
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 5/6
MV indoor air insulated wall
mounted Load Break Switch
Choose bars according to rated normal current, maximum short-circuit current and terminals type.
Bars connection must have smooth and uniform surface, good appearance and excellent adhesion. Before connecting,
clean accurately using a clean cloth soaked with trielina, removing every trace of grease or dust.
When screwing connecting bolts, use contemporarily two spanners, to avoid to stress the insulating parts
Earthing connections
Using frame holes, connect earth busbars to a conductor more than 50 sq mm.
The connection must have the least resistance, and connections surfaces must be clean and degreased.
After connecting bolts, spread on a spinning veil of pure Vaseline.
Operating procedure closing switch disconnector
• Set the lever for insulated rod operation on switch-disconnector right side.
• Rotate counterclockwise operating shaft, to charge closing spring.
• Turn back clockwise operating shaft until the initial position.
• Switch-disconnector closes.
Opening switch disconnector
• Set the lever for insulated rod operation on switch-disconnector right side.
• Rotate counterclockwise operating shaft.
• Open Switch-disconnector.
Closing earth switch disconnectors
Keep on rotating until the stop position, to permit earthing switch closure
Maintenance
According to CEI 17-21 operating conditions, contacts must be lubricated every 36 months, as here described:
• Clean insulators using a clean and dry cloth;
• Clean accurately and spread a spinning veil of pure vaseline on arcs mobile contact and fixed and mobile main
contacts.
Part numbering information
Part number (p/n)
Product class : "M"
Subclass:
PA
Primary air insulated
SA
Secondary air insulated
PG
Primary gas insulated
SG
Secondary gas insulated
PM Primary gas/air insulated
SM
Secondary gas/air insulated
Product Type: TSC
Product Subtype: TA, TB, TAE, TBE, V, VE, VS
Rated voltage in kV
Rated current in A
Withstand current (1 sec) in kA
Accessories : motorization mode, fuses, earth switch in the lower side with
anticlockwise closure
Ex. M-SA-TSC-TAE-24kV-400A-20kA
Elettropicena Sud s.r.l.
Delta Systems s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net
Page 6/6
Elettropicena Sud s.r.l.
Ancarano (TE), Italy
Tel.: +390861870172, Fax: +390861870901
www.elettropicenasud.it
Delta Systems s.r.l.
Bergamo, Italy
Tel.: +390350296740, Fax: +390355095732
www.delta-systems.net