NPS Outdoor Air Load Break Switch
- Material: Copper with Silver Glavizanition, Silicon or Porcelain Insulator
- Rated Voltage: 12kV, 15kV, 24kV, 27kV, 36kV
- Rated Current: 630A, 1250A
- Standards: IEC 62271-102
- Outdoor Pole Mounted
General
NPS series outdoor air break disconnector( air load break switch) is designed and tested for outdoor distribution and substation applications with voltage rating up to 36 KV and current rating up to 2000 Amps. The disconnector unit can be upgraded to include load break interrupters for general purpose switching performance. The NPS Series Switch/Disconnector can be operated either manually or remotely using a motorized unit.
Key Features
— Complies with AS60251-1 and IEC 60265-1
— Horizontal and Vertical break operation
— Rated voltage: 12, 24 and 36 kV
— Rated current: 800, 1200 and 2000 A
— Up to 225 kV BIL
— Porcelain, polymer or cycloaliphatic insulators
— Choice of operating mechanisms: Vertical handle, hook stick, motorized and auxiliary switch
— Flexible installation and mounting configurations (pole top, mid pole horizontal and mid pole vertical on single or H-POLE structure)
— Fully unitised and adjusted ready for installation or delivered in assembled phases for modular on-site assembly
— Designed and tested in accordance with IEC60265-1 Standard.
— Designed to be fitted with expulsion drop-out fuses or earthing switch
— Stainless steel and hot dip galvanized ferrous components resistant to corrosive environments
— Silver plated copper contacts
— Tin plated copper terminal palms
Technical Data
Technical specification Switch Disconnector Type FKW18 | ||||||||
Rated Voltage(Ur) | kV | 12/24 | 33/36 | |||||
Rated Current (Ir) | A | upto 2000 | ||||||
Power Frequency (Fr) | Hz | 50/60 | ||||||
Rated Power Freuqncy Withstand Voltage 1min. | ||||||||
    - across isolating distance | kV | 60 | 80 | 130 | ||||
    - to earth and between phases | kV | 50 | 70 | 115 | ||||
Rated Lightning Impulse (1.2/50μs impulse wave) | ||||||||
    - across isolating distance | kV | 170 | 195 | 200 | 230 | 260 | ||
    - to earth and between phases | kV | 150 | 170 | 200 | 225 | |||
Arcing Distance | mm | 225 | 380 | 380 | 437 | |||
Insulator Material | – | Porcelain | Polymer | Porcelain | Polymer | Porcelain | Cycloaliphatic | |
Creepage Distance | mm | 380 | 610 | 660 | 1055 | 1060 | 1370 | |
Cantilever Strength | kN | 7.5 | 9.5 | 5.5 | 7 | 5.5 | 5.5 | |
Minimum Distance Between Phases | mm | 350 | 380 | 450 | 500 | |||
Minimum Isolating Distance | mm | 220 | 320 | 380 | 380 | |||
Rated Short-time Current, 800A unit | ||||||||
    -1 second | kA | 25 | 31.5 | |||||
    -3 second | kA | 20 | 25 | |||||
Rated Peak Withstand Current | kAp | 62.5 | 78.75 | |||||
Mechanical Endurance | Ops | 1000 | ||||||
Ambient Temperature Range | ℃ | -40…+40 | ||||||
Load Break Interrupter | ||||||||
    - Rated Mainly Active Load Breaking Current (I1) | A | 630 | ||||||
    - Rated Closed Loop Breaking Current (I2a) | A | 630 | ||||||
    - Rated No Load Transformer Breaking Current(I3) | A | 10 | ||||||
    - Rated Cable Charging Breaking Current (I4a) | A | 18 | ||||||
    - Rated Line Charging Breaking Current(I4b) | A | 2 | ||||||
    - Mechanical Endurance | Ops | 1000 |
Drawing
Packing Details
Model | Description | Gross Weight/kgs | Net Weight/kgs | Volumn/m3 | Packing Size/m |
FKW18-12 | |||||
FKW18-24 | |||||
FKW18-33 | |||||
FKW18-36 |
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