description
FN18 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 upto 24kV. 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.
parameters
Technical Information
|
Technical Specification |
|
|
|
|
Rated voltage |
kV |
12 |
24 |
|
Rated current |
A |
630 |
630 |
|
Rated power frequency |
Hz |
50/60 |
50/60 |
|
Short circuit making capacity |
kA Peak. |
50 |
50 |
|
Peak withstand current |
kA Peak. |
50 |
50 |
|
Short time current |
kA eff. |
|
|
|
1Sec. |
|
31.5 |
25 |
|
2Sec. |
|
25 |
25 |
|
3Sec. |
|
20 |
16 |
|
Max. breaking capacity in co-operation with fuses IEC 62271-105 (IEC 420 1990-11) |
A |
1600 |
900 |
|
Max. fuse current(XRNT Fuse) |
A |
200 |
200 |
|
Power frequency withstand voltage 50Hz 1 min,: |
|
|
|
|
- To earth and between poles |
kV |
42 |
65 |
|
- Across isolating distance |
kV |
48 |
79 |
|
Impulse withstand voltage 1.2/50μ s: |
|
|
|
|
- To earth and between poles |
kV |
75 |
125 |
|
- Across isolating distance |
kV |
85 |
145 |
|
Mechanism Endurance |
cycles |
2000 |
2000 |
Zhejiang Xikai Electric Co., Ltd engineers and manufactures medium- high-voltage electric
equipment, components and systems that deliver reliable electric power to homes, industries,
businesses, and institutions worldwide. We are a leader in providing load break switch, vacuum
circuit breaker, isolating switch that enable customers to increase productivity, improve system
reliability and reduce costs.
Our products, services, and solutions are used worldwide for public, commercial, and industrial
power systems. Our products had passed the test at Ministry of Power Industry of PRC and
Electric Power Research Institute of PRC.
As a global manufacture, Zhejiang Xikai Electric Co., Ltd provides a wide range of
forward-looking solutions including Power Systems Protection, Distribution System Reliability
and Power Quality products and services. Through our commitment to research and development,
we continue to develop smart solutions for safe, reliable, environmentally friendly power
protection.
Our products include indoor high voltage load break switch, vacuum load break switch, circuit
breaker; outdoor high voltage load break switch, circuit breaker; high voltage earthing switch;
high voltage isolating switch and fuse.
We offer our customers integrated protective solutions using innovative products combined with
unrivalled service and reliability world wide
