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FLN36-12/24/33 Indoor AC High Voltage SF6 Load Break Switch

FLN36-12/24/33 Indoor AC High Voltage SF6 Load Break Switch
FLN36-12/24/33 Indoor AC High Voltage SF6 Load Break Switch FLN36-12/24/33 Indoor AC High Voltage SF6 Load Break Switch

PRODUCT DESCRIPTION

FLN9-12(24)D and FLRN36-12(24)D indoor AC high-voltage sulfur hexafluoride load break switch, load break switch-fuse combination unit and cable head installable load break switch are developed with our own design, based on our digestion and absorption of foreign advanced technology, combined with China's operational requirements. The product passes full type tests, and its performance is in line with GB3804"3-63Kv AC high-voltage load break switch", GB16926 "high-voltage load break switch-fuse combination unit", IEC60265 and IEC60420 standard requirements.

The product has "joint-division-ground" three-position arc chamber, with reliable interlocking, high dielectric strength of fracture, design of large creepage path, and its leading-out terminal is protected by a voltage-sharing protection cover. For the cable head installable load break switch, its outgoing end is equipped with touch-type cable connector, the outgoing line is installed with high-voltage cable, equipped in cable branch (distribution) box. The switch has special dynamic seal and fixed seal design, which is reliable, and it is equipped with a voltmeter in a clear position for monitoring in operation to ensure safe operation, which is a new generation of high voltage switchgear for urban power grid.

This product is suitable for three-phase AC 10KV,20KV,50Hz power system, for cut-off, turning off load current, fault current, control, protective circuit and distribution transformer in industrial and mining enterprises, high-rise buildings, residential quarters and prefabricated substation.

MODEL AND MEANING

TECHNICAL SPECIFICATION

No.

Item

Unit

Data

FLN36-12D(24D)

FLRN36-12D(24D)

1

Rated voltage

kV

12(24)

12(24)

2

Rated frequency

Hz

50(50)

50(50)

3

Rated current

A

630(630)

125(125)

4

Rated short time withstand current of load break

switch/rated duration of short-circuit

kA/s

20/3(20/3)

-

 

Rated short time withstand current of earthing switch/ rated duration of short-circuit

kA/s

20/2(20/2)

-

5

Rated peak withstand current and Rated Short circuit Making Current

kA

50(50)

125(Expected)(125)

6

Rated breaking current

Active load breaking current

A

630(630)

-

 

Closed loop breaking current

A

630(630)

-

 

5% rated active load breaking current

A

31.5(31.5)

-

 

Breaking cable charging current

A

10(10)

-

 

Breaking non-load transformer capacity

kVA

1250(2000)

1250(2000)

 

Breaking transfer current

A

-

1700(1700)

 

Expected short circuit breaking current

kA

-

20(50)

7

Rated insulation levels

1 min P.F. withstand voltage,phase to phase,earth/across open contacts

kV

42/48(65/79)

42/48(65/79)

 

Lightning impulse withstand voltage,phase to phase, earth/across open contacts

kV

75/85(125/145)

75/85(125/145)

8

Mechanical life

 

5000(5000)

5000(5000)

9

Rated pressure of SF6(20℃,gauge pressure)

MPa

0.04~0.05(0.04~0.05)

0.04~0.05(0.04~0.05)


OUTLINE AND INSTALLATION DIMENSION

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