en English

FN18-12 FN18-24 Indoor High Voltage Load Break Switch and Fuse Combination

Product Details:

FN18 12kV 17.5kV 24kV Indoor LBS

 

General Introduction

FN18-D is a general purpose, three-pole, load break switch that offers switchgear owners and assemblers the advantages of an advanced interrupting technology and proven, dependable performance in a compact design. The switch is available to switchgear assemblers as a building block for metal-enclosed and pad-mounted switchgear applications in ratings from 12-40.5 kV. The standard FN18 switch includes a heavy-duty steel frame with stand-off insulators, a unique puffer-type arc extinguishing system, an operating mechanism and current-carrying components, including blade-type interrupters with cast hinges and jaw connectors. Optional accessories and features include a variety of operating handles, a motor operator, auxiliary switches, a shunt trip device, fuse bases, mechanical fuse tripping, grounding switches, mechanical door interlocking and key interlocking.
fn18 load break switch

Technical Specification

FN18 12kV 17.5kV and 24kV load break switch

fn18 12 12kv 24kv load break switch

FN18 Series Indoor H.V. Load Break Switch And Fuse Combination
FN18 Series Indoor H.V. Load Break Switch And Fuse Combination
Technical specification

Switch load break switch FN18

Rated voltage Un kV 12kV 24kV
Rated current In A 400 630 1250 400 630 1250
Max.rated rated current I A 400 630 1250 400 630 1150
Short circuit making capacity Ima kA

peak

67 67 67 50 50 50
Peak withstand current Idyn kA

peak

82 82 82 82 82 82
Short time current      1sec.                                  2sec.

3sec.

Ith“

kA eff“

31.525

20

31.525

20

31.525

20

2525

16

2525

16

31.525

16

Mainly active load breaking capacity(test duty 4, IEC 60265-1 (IEC265)) I A 400 630 1250 400 630 1250
Mainly capacitive breaking capacity(test duty 4, IEC60265-1 (IEC 265)) I A 150 150 150 80 80 80
Mainly inductive breaking capacity cosφ=0.15 A 16 16 16 16 16 16
Rated earth fault breaking capacity,IEC 60265-1 (IEC 265)

Earth fault breaking capacity

Capacitive breaking capacity

 

I

I

 

A

A

 

150

90

 

150

90

 

150

90

 

75

31.5

 

75

31.5

 

75

31.5

Max. Breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11) A 1600 1600 900 900
Max. Fuse size In A 125 125 80 80
Power frequency withstand voltage 50Hz1 min.-to earth and between poles-across

isolating distance

kV

kV

42

45

55

70

Impulse withstand voltage 1.2/50μs-to earth and between poles

-across isolating distance

kV

kV

75

85

125

145

Pole distance P mm 150 and 170 235, 250 and 275
Max.operating torque at:-closing K/A mech.

-opening K/A mech.

Nm

Nm

115-120 Nm

K-mech. 120 Nm/A-mech. 3Nm

Operating angle on the shaft degree 130
Opening time ms 40-60

 

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “@wolunele.com”