SZ-FLN48-12D SF6 load switch

1.Economical and practical 2.Simple construction and easy operation 3.Reliable interlock 4.Easy installation

Normal use setting:

a) Environmental  temperature

Tmax : +40 centigrade   Tmin: -40 centigrade

Ambient humidity: Daily average relative humidity: ≤ 95%   Monthly average relative humidity: ≤ 90% 

Daily average vapor pressure: ≤ 2.2 × 10-3Mpa   Monthly average vapor pressure: ≤ 1.8 × 10-3Mpa  

Leakage rate per year: ≤  0.05%

b) altitude: ≤  2000m

c) Earthquake intensity:≤ 8 degree

d) The use place should be without drip , dewing ,inflammable and explosive danger,chemical corrosive gases and violent vibration.

Product standards:

GB3804-2004,GB3906-2006,GB16926-2009,GB/T11022-2011

Designation

Unit

FLN48-12D/T630-20 Load Switch

Rated voltage

KV

12

Rated frequency

Hz

50

Rated current

A

630

1 min power frequency withstand voltage,relative,interphase/fracture

KV

42/48

Lightning impulse withstand voltage (peak)relatively,interphase/fracture

KV

75/85

Rated power frequency withstand voltage under 5min zero gauge pressure

KV

24

Rated short-time withstand current for 3 seconds/2 seconds load switch/earthing switch

KA

20/20

Rated dynamic current(peak) load switch/earthing switch

KA

50/50

Rated short-circuit making current   load switch/earthing switch

KA

50/50

Rated closed-loop dropout current

A

630

Rated active load dropout current

A

630

Rated cable-charging dropout current

A

10

Rated short-circuit dropout current

KA

Rated transfer current

A

Fuse type

Fuse impact energy output

J

Mechanical life load switch/earthing switch

times

5000/2000

Charged body and ground air insulating distance

mm

≥125

SF6 gas pressure(relative pressure at 20 centigrade)

bar

0.4

Switching synchronization status

ms

≤2

Main circuit resistance

µΩ

≤65