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Circuit-breaker panel of bus sectionalizer LS (LK), single busbar

The circuit-breaker panels of the bus sectionalizers must be designed as follows:

In panel-type construction, equipped with:

1 set of busbars, insulated, Cu

Rated continuous current of the bus sectionalizer:

O 1200 A (only ANSI)

X 1250 A

O 2000 A

O 2500 A

O 3150 A

Voltage transformers at the busbar:

X without voltage transformers

O with voltage transformers, 3 x single-pole

O with voltage transformers, 3 x single-pole, with earth-fault winding and damping resistor

Rating / Class:

IEC, GB, GOST

O 10 VA / 0.5

O 10 VA / 1

O 20 VA / 0.5

O 20 VA / 1

O 50 VA / 1

ANSI

O WXY / 0.3

HV HRC fuse for voltage transformer:

X without (only IEC, GOST, GB)

O with (only ANSI)

O Three-position disconnector at the voltage transformer
Rated continuous current and rated short-time withstand current according to the general technical specifications,
with the switch positions CLOSED-OPEN-EARTHED,
installed in the gas-filled switchgear housing,
operation through slow motion mechanism, equipped with
X manual operating mechanism for DISCONNECTING function and EARTHING function
O motor operating mechanism for DISCONNECTING function and EARTHING function
with mechanical position indicator,
with auxiliary switch
DISCONNECTING function: 2NO+2NC
READY-TO-EARTH function: 2NO+2NC
with mechanical position indicator,
with locking device,
with operating mechanism designed for separate operating levers (acc. to FNN recommendation)

Current transformers at the busbar:

X without current transformers at the busbar

O with current transformers at the busbar, 3 current transformers with 1 core

O with current transformers at the busbar, 3 current transformers with 2 cores

Current transformer values, core 1:

IEC, GB, GOST

O 600A-1200A/1A; 15VA / Cl. 10P20

O 1250A-2500A/1A; 15VA / Cl. 10P20

O 2750A-3150A/1A; 15VA / Cl. 10P20

O 600A-1200A/1A; 10VA / Cl. 0.5 / FS10

O 600A-1200A/1A; 10VA / Cl. 1 / FS10

O 1250A-2500A/1A; 10VA / Cl. 0.5 / FS10

O 1250A-2500A/1A; 10VA / Cl. 1 / FS10

O 2750A-3150A/1A; 10VA / Cl. 0.5 / FS10

O 2750A-3150A/1A; 10VA / Cl. 1 / FS10

ANSI

O 600A-1200A MR/5A; Cl. C200

O 1300A-2000A MR/5A; Cl. C200

O 2100A-2500A MR/5A; Cl. C200

O 2750A-3150A MR/5A; Cl. C200

O 600A-1200A MR/5A; Cl. 0.3B0.9

O 1300A-2000A MR/5A; Cl. 0.3B0.9

O 2100A-2500A MR/5A; Cl. 0.3B0.9

O 2750A-3150A MR/5A; Cl. 0.3B0.9

Current transformer values, core 2:

IEC, GB, GOST

O 600A-1200A/1A; 15VA / Cl. 10P20

O 1250A-2500A/1A; 15VA / Cl. 10P20

O 2750A-3150A/1A; 15VA / Cl. 10P20

O 600A-1200A/1A; 10VA / Cl. 0.5 / FS10

O 600A-1200A/1A; 10VA / Cl. 1 / FS10

O 1250A-2500A/1A; 10VA / Cl. 0.5 / FS10

O 1250A-2500A/1A; 10VA / Cl. 1 / FS10

O 2750A-3150A/1A; 10VA / Cl. 0.5 / FS10

O 2750A-3150A/1A; 10VA / Cl. 1 / FS10

ANSI

O 600A-1200A MR/5A; Cl. C200

O 1300A-2000A MR/5A; Cl. C200

O 2100A-2500A MR/5A; Cl. C200

O 2750A-3150A MR/5A; Cl. C200

O 600A-1200A MR/5A; Cl. 0.3B0.9

O 1300A-2000A MR/5A; Cl. 0.3B0.9

O 2100A-2500A MR/5A; Cl. 0.3B0.9

O 2750A-3150A MR/5A; Cl. 0.3B0.9

Earthing switch in busbar compartment:

X without earthing switch

O with earthing switch, with manual operating mechanism

O with earthing switch, with motor operating mechanism

O with make-proof earthing switch, with manual operating mechanism

Capacitive voltage detecting system at the busbar (tapping through capacitive layers in the busbar bushings):

X without

O ________ acc. to description

1 vacuum circuit-breaker
Rated continuous current and rated short-time withstand current according to the general technical specifications,
with maintenance-free operating mechanism as stored-energy spring mechanism,
with motor operating mechanism, with AR capability acc. to VDE / IEC (=O-t-CO-t'-CO),
with mechanical pushbuttons for CLOSING and OPENING,
OPENING operation lockable,
with auxiliary switch, free contacts: 4NO+4NC,
with mechanical indication and signaling for "closing spring charged" and "circuit-breaker trip",
with counter for operating cycles,
with shunt release
Number of operating cycles:
X 10000
O 30000
Capacitor bank circuit:
X single
O parallel
O filter circuit

1 three-position disconnector
Rated continuous current and rated short-time withstand current according to the general technical specifications,
with the switch positions CLOSED-OPEN-EARTHED or READY-TO-EARTH,
installed in the gas-filled switchgear housing for earthing the cable feeder (via circuit-breaker),
operation through slow motion mechanism, equipped with
X manual operating mechanism for DISCONNECTING function and EARTHING function
O motor operating mechanism for DISCONNECTING function and EARTHING function
with mechanical position indicator,
with auxiliary switch
DISCONNECTING function: 2NO+2NC
READY-TO-EARTH function: 2NO+2NC
with mechanical position indicator,
electromechanical interlock:
X without
O at the disconnector (-Y1)
O at the earthing switch (-Y5)
O at the disconnector and earthing switch
with locking device,
with operating mechanism designed for separate operating levers (acc. to FNN recommendation)

With capacitive voltage detecting system ________ at the feeder acc. to description.

1 mimic diagram (preferably printed)

1 low-voltage compartment

for accommodation of secondary devices, with terminal strips, completely wired, with feeder designation label

Height:

X 850 mm

O 1200 mm

including the necessary secondary devices for control, protection and monitoring.

Protection device according to preliminary description:
O Universal protection device 7SX82
O Universal protection device 7SX85
O Universal protection device Compact 7X800
O Feeder and overcurrent protection 7SJ82
O Feeder and overcurrent protection 7SJ85
O Motor protection 7SK82
O Motor protection 7SK85
O Generator protection 7UM85
O Differential protection for
  two-winding transformers 7UT82
O Transformer differential protection 7UT8
O Line differential protection 7SD82
O Distance protection 7SA82
O Voltage and frequency protection 7RW80
O Line differential protection 7SD80
X Time-overcurrent protection 7SJ80
O Motor protection 7SK80
O Time-overcurrent protection 7SR11
O Time-overcurrent protection 7SR12
O Time-overcurrent and earth-fault protection 7SR100
O Motor and generator protection 7SR105
O Current-transformer operated time-overcurrent protection 7SR45

Siemens
LS (LK) SBB

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