Place of Origin: | Ningbo,China |
Brand Name: | Suntech |
Certification: | ISO |
Model Number: | FZ(R)N21-40.5 |
Minimum Order Quantity: | 1 Set |
---|---|
Price: | Negotiation |
Packaging Details: | Exporting Cases |
Delivery Time: | 25-30 days after Payment |
Payment Terms: | L/C, T/T, Western Union, MoneyGram |
Supply Ability: | 6000pcs per month |
Name: | Alternating-Current Load Switch | Altitude: | Under 1000M |
---|---|---|---|
Ambient Temperature: | -40℃-+40℃ | Usage: | Electrical Site |
High Light: | Remote Control Vacuum Load Break Switch,40.5KV Vacuum Load Break Switch,40.5KV Indoor Load Break Switch |
40.5KV Remote Control High Voltage AC Indoor Vacuum Load Break Switch
FZ(R)N21-40.5D indoor high-voltage ac vacuum load switch-fuse combination ( "combination" for short) is used in power systems with an AC frequency of 50 Hz and a rated voltage of 40.5 kV to break load currents, overload currents and short-circuit currents. It particularly applies to the places needing control, protection for oilfree, maintenance-free, frequently-operated and ring network power supply units and terminal power supply transformers.
The combination is characterized by large breaking capacity, high safety and stability, long electrical life, support for frequent operation, less maintenance, etc. It has an apparent isolating gap, an earthing switch with making capability, an electric spring actuator and remote control capability.
1.1 Technical parameters
ltem | Unit | Reference value | |
Rated voltage | kV | 40.5 | |
Rated frequency | Hz | 50 | |
Rated maximum current of the fuse | A | 63 | |
Insulation level | 1min power-frequency withstand voltage | kV | Vacuum gap, interpole, pole-to-ground: 95; isolating gap: 110 |
Lightning impulse withstand voltage | kV | Vacuum gap, interpole, pole-to-ground: 185; isolating gap: 215 | |
Rated peak withstand current | kA | 50 | |
4s rated short-time withstand current | kA | 20 | |
Rated breaking current of the active load | A | 1250 | |
Rated closed-loop breaking current | A | 1250 | |
Rated breaking current of cable during charge | A | 21 | |
Rated short-circuit breaking current | kA | 31.5 | |
Rated transfer current | A | 1200 | |
Fuse model | XRNT3A-40.5/Δ-31.5 | ||
Output energy of the fuse striker | J | 2-5 | |
Rated short-circuit making current | kA | 80(expected peak value) | |
Rated peak withstand current of the earthing switch | kA | 50 | |
4s rated short-time withstand current of the earthing switch | kA | 20 | |
Rated voltage (DC or AC) of the auxiliary circuit | V | 220;110 | |
Mechanical life | Cycles | 10000 |
1.2 Technical parameters of the vacuum load switch
Item | Unit | Reference value |
Gap of contacts | mm | 17±1 |
Compression travel of the contact spring | mm | 4±1 |
Average making speed | m/s | 0.6±0.2 |
Average breaking speed(gap: 6mm) | m/s | 1.5±0.2 |
Breaking time | ms | ≤60 |
Non-synchronous making/breaking of contacts of the three phases | ms | ≤2 |
Bounce time in contact making | ms | ≤3 |
Distance between live parts and phase-to-ground distance | mm | ≥300 |
Circuit resistance between the upper and lower brackets | μΩ | ≤80 |
Product standards |
1. GB 16926- 1997 High-voltage alternatingcurrent load switch-fuse combinations 2. IEC 60420 High-voltage alteratingcurrent load switch-fuse combinations |
Ambient condition |
1. The altitude: under 1000M. 2. The ambient temperature: -40℃-+40℃. 3. The relative humidity of air: monthly≤90%, daily≤95%. |
Contact Person: Peter
Tel: 86-13958364836
Dia 660mm Conductor Stringing Blocks , Stringing Equipment For Overhead Power Lines
MC Nylon Cable Pulley Sheaves For Transmission Stringing Pulley Block
Factory Price MC Nylon Conductor Cable Stringing Pulley Block With Hook
High Wind Tolerance Lattice Q355 Q255 Angle Steel Tower
132kv Transmission Line Galvanized Steel Lattice Tower
Polygonal Conical 10kv To 750kv Transmission Line Angle Tower
89kN 33kV Max High Voltage Line Post Insulators
Anti Fouling 240kN Toughened Glass Electrical Insulators
70KN 33KV High Voltage Disc Type Porcelain Suspension Insulator
69KV 10KN Erode Proof High Voltage Polymer Line Post Insulators