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8/9/2019 Sarel Sysclad Primary Switchgears 12 175kv
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SYSclad switchboard
equipped with draw ‐out type
vacuum circuit
breaker
630÷3150A
SYSclad
12÷17,5kV
16÷31,5kA
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Generalities
SYSclad is a medium volta e switchboard metal clad t e, air insulated, e ui ed with vacuum circuit breaker
suitable for the primary distribution. The switchboard is modular and is made up by placing standardized units side
by side in a coordinated way.
The unit compartments are metallically segregated from each other and the live parts are air insulated.
The switchboard functional units are guaranteed to be arc‐proof in compliance with IEC 60298 Standards
The switchboard
is
fitted
with
all
the
interlocks
needed
to
prevent
incorrect
operations
which
might
jeopardize
the
safety of the personnel in charge of it.
Electrical characteristics of the switchgear
Rated voltage kV 12 17,5
Rated insulation voltage kV 12 17,5
Test voltage
at
power
frequency kV
1
min 28 38
Impulse withstand voltage kV 75 95
Rated frequency Hz 50‐60 50‐60
Rated short‐time withstand current kA 3s 31,5 31,5
Peak current kA 78,5 78,5
Internal arc withstand current kA 0,5s 25 25
Main
busbar rated
current A 3150 3150630 630
Rated current of the branch connections A 1600
2000
2500
3150
1600
2000
2500
3150
4
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Characteristics of the switchgear
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1
2
4 Each unit consists of the following compartments:1) Main busbar
2) Circuit breaker compartment
3) Auxiliary and instrument compartment
4) VT compartment
5) Feeder
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Characteristics of the switchgear
Com artments
Each unit consist of three power compartments:
busbar, feeder and circuit breaker and three auxiliary compartments: instrumnets, auxiliary circuit interconnection
wiring duct and voltage transformers.
The arc
proof
switchgear
is
also
fitted
with
a
duct
to
evacuate
the
gases
produced
by
a
possible
internal
arc.
All
the
compartments are metallically segregated from each other.
Main busbars
The busbar compartment houses the main busbar system, which is connected to the circuit breaker fixed isolating
contacts by means of branch connections.
The main busbars are made of electrolytic copper which can be covered with insulating material on request.
Branch connections
The feeder
compartment
houses
the
branch
connection
system
to
connect
the
power
cables
to
the
fixed
isolating
contacts of the circuit breaker.
The branch connections are made of electrolytic copper.
Earthing switch
.
also be used to earth the busbar system (measuring, bus tie and riser units). The earthing switch is fitted with short‐
circuit making capacity.
Rated voltage kV 17,5 (*)
Short‐time withstand current /kA
25 x 3s
Earthing busbar
Short‐time making capacity , x s
Peak current kA 63
79
(*) Values also valid for 15 kV
The earthing busbar is made of electrolytic copper. It runs longitudinally round the whole switchgear on the inside,
thereby guaranteeing
maximum
safey for
the
personnel
and
for
the
installation.
Monoblocs and shutters
The monoblocs consist of bushing insulators containing the top and bottom power connections of the circuit
breaker compartment, towards the feeder and busbar compartments respectively.
The shutters are of metallic type and are automatically operated when the circuit breaker moves from the isolated
position to the connected position and vice versa.
They can be fitted with a fail‐safe device (optional) to prevent their being manually opened with the circuit breaker
removed and the door open.
Each shutter can be locked using two independent padlocks (optional).
The switchgear is fitted with all the interlocks needed to prevent incorrect operations which might jeopardise
T he safety of the personnel in charge of it.4
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Characteristics of the switchgear
In articular, lockin devices are rovided to revent the followin o erations:
‐ circuit breaker closing in an intermediate position
‐ circuit breaker racking‐out in the closed position
‐ circuit breaker racking‐in in the closed position
‐ circuit breaker compartment door opening in the connected or intermediate position
‐ circuit
breaker
racking
‐in
with
the
compartment
door
open
And if the unit is fitted with an earthing switch with the following as well:
‐ earthing switch closing with the circuit breaker in the connected or intermediate position
‐ circuit breaker racking‐in with the earthing switch closed
Voltage transformers
The voltage transformer, Tesar manufacturing, are of the type insulated in resin and are used for power supply to
measuring instruments and protection. They are available either for fixed installation or mounted on withdrawable
truc s.
They comply
with
IEC
60044
‐2
Standards.
The
dimensions
of
the
version
used
for
fixed
assembly
comply
with
DIN
42600 Narrow type Standards. On the other hand, the ones installed on a withdrawable truck are the dedicated
type. These transformers can have one or two poles, with performances and classes of precision suited to the
functional requirements of the instrument connected to them.
When they are installed on withdrawable trucks, they are fitted with medium voltage protection fuses.
The current transformers, Tesar manufacturing, are of the type insulated in resin and are used for power supply to
measuring instruments and protections. These transformers can either have a wound core or through bar with one
or more cores, with performance and precision classes suited to the installation requirements.
They comply with IEC 60044‐1 Standards.
Their dimensions are usually according to the DIN 42600 Narrow Type Standard, in the Medium and Long Size versions. The switch ear unit can be e ui ed with one or two sets of three transformers.
TESAR instrument transformers
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Protection a ainst internal arcs
Characteristics of the switchgear
Internal fault test – CESI Laboratories
IEC 62271‐200
Loss of
service
continuity
categoty (LSC) LSC2B
Internal fault: short‐circuit current 25kA
Internal fault: short‐circuit duration 0,5s
Internal fault: classification IAC
(initials for Internal Arc Classified) AFL
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Characteristics of the switchgear
De rees of rotection
The degrees of protection of the switchboard comply with IEC 60529 / CEI EN 60529 Standards.
SYSclad switchboard are normally supplied with the following standard degrees of protection:
• external housing IP4X
• inside the
units IP2X
Environmental conditions
The switchgear ratings are guaranteed under the following environmental conditions:
Minimum ambient temperature ‐ 5 °C
Maximum ambient temperature + 40 °C
Maximum relative humidity 95%
Standards
The SYSclad and the main equipment it contains comply with the following Standards:
Maximum
altitude 1000
m
s.l.m.
In presence of unpolluted and non‐corrosive atmosphere
• IEC 62271‐1 for the general application
• IEC 62271‐200 for the switchboard
• IEC 62271‐102 for the earthing switch
• IEC 60071‐2 for coordination of the insulation
• IEC 62271‐100 for the circuit breaker
• IEC
60470
for
the
contactor
• IEC 60265‐1 for the switch‐disconnector.
T e IEC 62271‐200 Stan ar as intro uce new criteria regar ing t e e initions an c assi ication o MV
switchgear. One of the main changes introduced by this Standards is elimination of the classification of switchgear
in metal‐clad, divided into compartments and in units. The classification of switchgear has been reviewed taking
into account the viewpoint of the user, particularly regarding some aspects such as operability and maintenance of
the switchgear, according to the requirements and expectations of good management of substations, from
installation to dismantling. In this context, the “loss of service continuity” has been chosen as the fundamental
criterion for the user.
,
1. Compartment with access controlled by an interlock
Compartment containing high voltage parts, designed to be open for normal service and/or normal
maintenance, where
access
is
controlled
by
the
overall
configuration
of
the
switchgear
and
by
the
control
apparatus.
2. Compartment with access based on a procedure
Compartment containing high voltage parts, designed to be open for normal service and/or normal
maintenance where access is controlled b an ade uate rocedure associated with a locked status.
3. LSC2B
Busbar, feeder and apparatus compartments physically and electrically segregated.
This category defines the possibility of opening one of the main circuit compartments keeping the other
compartments and/or function units energised.
4. Partition class
Metal‐clad switchgear and control apparatus which offer continuous metallic segregation and/or shutters (if
applicable), destined
to
be
earthed,
among
the
freely
accessed
compartments
and
the
live
parts
of
the
main
circuit.
The metallic segregations and shutters or the metallic parts of these, must be connected to the earthing point
of the functional unit.7
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Characteristics of the VCB
Generalities
SYSclad units is equipped with withdrawable WL/r vacuum circuit breaker.
The circuit breaker is fitted with a truck for racking in and out of the switchgear with the door closed.
The light and compact structure guarantees great sturdiness and excellent mechanical reliability.
The operating
mechanism
and
the
poles
are
fixed
to
the
metallic
structure
which
also
acts
as
the
support
for
the
moving contact actuation kinetics.
The WL/r circuit breaker use vacuum as the interruption and insulating medium.
Thanks to the advance techniques used for their construction, the WL/r circuit breaker ensure high performances
under all service conditions.
The vacuum interrupter are embedded in the poles made of epoxy resin. This construction means the interrupter
are unaffected by shocks, humidity and environmental pollution.
The circuit breaker poles, making up the interruption part, are sealed for life pressure systems (IEC 62271‐100 and
CEI 17.1 Standards) and are maintenance‐free.
e r c rcu t rea er are prov e w t mec an ca store energy operat ng mec an sms w t ree tr p an
allow opening
and
closing
operations
independent
of
the
operator’s
actions.
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Characteristics of the VCB
VCB type WL/r-C 12kV-17,5kV “CASSETTE” – Moving part
Predisposed for mounting inside to enclosures
Tested and constructed in accordance whith IEC Standards
Compact dimensions
Long electrical and mechanical life
Resin poles with embedded interrupters
Sealed‐for‐life and maiontenance‐free poles
Vacuum Circuit Breaker WL/r‐C 12 WL/r‐C 17
Rated voltage and isolation kV 12 17,5
Withstand voltage ( 1 min ) kV (50 Hz) 28 (42) 38 (42)
Lighting impulse withstand voltage kV 75 95
Rated frequency Hz 50
‐60 50
‐60
Use SYSclad‐C SYSclad‐C
Electrical characteristics
Rated current A (40°) 630 1250 1600 2000 2500 3150 630 1250 1600 2000 2500 3150
Short‐time withstand current (3 s) kA
16 ‐ ‐ 16 ‐ ‐
20 20 20 20 20 20
25 25 25 25 25 25
31,5 31,5 31,5 31,5 31,5 31,5
Making capacity kA
40 40 40 40 40 40
53 53 53 53 53 53
63 63 63 63 63 63
Operation sequence 0‐0,3‐CO‐3s‐CO 0‐0,3‐CO‐3s‐CO
Opening time ms 40 … 60 40 … 60
Breaking internal
arc
time ms 10
…
15 10
…
15
Total breaking time ms 50 … 75 50 … 75
Closing time ms 60 … 80 60 … 80
Overall dimension
Height mm 645 712 737 645 712 737
Width mm 502 652 852 502 652 852
Depth mm 679 658 663 679 658 663
… … … … … …
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Dimensions of the VCB
VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part
630A‐1250A
1600A‐2000A
VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part
2500A‐3150A
VCB type WL/r 12kV-17,5kV “CASSETTE” – Moving part
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Characteristics of the VCB compartment
VCB type WL/r-C 12kV-17,5kV “CASSETTE” – Cradle
Predisposed for mounting inside to enclosures
Tested and constructed in accordance whith IEC Standards
Compact dimensions
Long electrical and mechanical life
Bushing made in cast resin
Can be equipped whit earthing switch
Module C1–63‐12 C1–16‐20 C1–25‐31 C2–63‐12 C2–16‐20 C2–25‐31
Width of module mm 600 800 1000 600 800 1000
Rated voltage and isolation kV 12 17,5
Withstand voltage ( 1 min ) kV (50 Hz) 28 (42) 38 (42)
Lighting impulse
withstand
voltage kV 75 95
Rated current A (40°) 630 1250 1600 2000 2500 3150 630 1250 1600 2000 2500 3150
Short‐time withstand current (3 s) kA
16 ‐ ‐ 16 ‐ ‐
20 20 20 20 20 20
25 25 25 25 25 25
31,5 31,5 31,5 31,5 31,5 31,5
Making capacity kA
40 40 40 40 40 40
53 53 53 53 53 53
63 63 63 63 63 63
Weight Kg 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150 100 … 150
Use SYSclad‐C SYSclad‐C
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Electric circuit diagrams
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Note
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Due to continuous development in material
,
are not binding and subject to our revision.
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S c l a d 0 0 2 - 0 2 1 1
S_
S
Via del Commercio 12/14 - 26900 Lodi – Italy – www.sarel.it
Tel 0039 0371- 4906.1 Fax 0039 0371- 411.422 E-mail info@sarel.it