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LW8A-40.5 SF6-afbryder
  • LW8A-40.5 SF6-afbryderLW8A-40.5 SF6-afbryder
  • LW8A-40.5 SF6-afbryderLW8A-40.5 SF6-afbryder
  • LW8A-40.5 SF6-afbryderLW8A-40.5 SF6-afbryder
  • LW8A-40.5 SF6-afbryderLW8A-40.5 SF6-afbryder
  • LW8A-40.5 SF6-afbryderLW8A-40.5 SF6-afbryder

LW8A-40.5 SF6-afbryder

Vare: LW8A-40.5 SF6-afbryder
God bue -slukningsydelse: sikrer pålidelig afbrydelse af elektriske strømme.
Enkel struktur og kompakt størrelse: letter let installation og effektiv brug af plads.
God åbningspræstation, afbalanceret drift: Forbedrer operationel pålidelighed og sikkerhed.
Forseglet afbryder med lille driftsstøj: giver stille drift og forhindrer ekstern forurening
. Arbejdsbyrde for lav inspektion og vedligeholdelse: Reducerer driftsomkostninger og forbedrer effektiviteten.

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Produkt beskrivelse

Item:LW8A-40.5 SF6 Circuit Breaker

·  Insulation and Arc Extinguishing Medium: Utilizes sulfur hexafluoride (SF6) gas for excellent insulation and arc extinguishing performance.

·  Structure: Features a single-column, single-fracture design for each pole, ensuring compact and efficient operation.

·  Arc Extinguishing Principle: Operates on the self-energy arc extinguishing principle for reliable performance.

·  Actuator: Equipped with a CT14 spring actuator structure enabling three-phase mechanical linkage for synchronized operation.

·  Compliance: MeetsGB1984 andIEC62271-100 international standards, ensuring safety and reliability.

Model Description

Main Technical Parameters

No. ltem Unit Data
1 Rated vllage kv 40.5
Rated insulation
level
Lightning impact withstand voltage (full crest value) kv 185
Power frequency withstand voltage (Imin) kV 95
2 Rated current A 1600 2000
3 Mechanical life fime 3000
4 Rated pressure of sulphur hexafluoride gas lgauge pressure at 20℃) MPA 0.50
5 Alarm pressure/minimum functional pressure (gauge pressure at 20℃) MPA 0.47/0.45
6
7
Rated short circuit switching current kA 25
63
31.5
Rated short-circuit closing current(peak) KA 80
8 Rated Short-Time withstand current(thermal stable current) kA 25 31.5
9 Rated Short-Time withstand current (thermal stabl current) kA 60 80
10 Rated short circuit swilching current kA 63 8
11 The cumulative number of switching times under rated short-circuil switching 次Times 15 10
12 Rated short circuit duration S 4
13 Closing time lat rated operating voltagel ≤0.1
14 Switching time (at rated operating voltage) S ≤0.06
15 Rated orer of operation C-0.3s-CO-180s-CO
16 Rated opening and closing monomial capacitor bank current A 400
17 In leakage % years ≤1
18 Water content of sulfur hexafluoride gos(V/V) ≤150x10-9
19 CT14 spring operating mechanism with rated operating voltage
Closing coil,opening coil voltage V IACI:220 380 IDC):48 110 220
Energy storage motor voltage V IAC):220 380 (DC):110 220
20 Sulfur hexafluoride gas weight KG 8
21 Weight of circuil breaker [induding operating mechanisml KG 1400

Structure And Mounting Dimensions

Working Environment:

Item:LW8A-40.5 SF6 Circuit Breaker

·  Ambient Temperature:

·  Maximum: +40°C

· Minimum: -30°C

·  Altitude:

·  ≤2000m (For installations above this altitude, insulation level adjustments are required).

·  Wind Pressure:

·  Not exceeding 700Pa (equivalent to wind speeds of approximately 34m/s).

·  Seismic Resistance:

·  Withstands earthquake intensity up to 8 degrees.

·  Pollution Level:

·  Suitable for Class I contamination levels.

·  Maximum Daily Temperature Difference:

·  Should not exceed 25°C.

·  Installation:

·  Suitable for bothside-mounted andmiddle-mounted configurations.

Possible causes of electrical circuit failure

Item:LW8A-40.5 SF6 Circuit Breaker

·  Efficient Arc Extinguishing:

·  Utilizes SF6 gas for superior arc suppression and insulation.

·  Single-Pole Structure:

·  Features a single-column, single-fracture design for each pole.

·  Self-Energy Principle:

·  Operates based on the self-energy arc extinguishing mechanism, ensuring reliable operation under high fault conditions.

·  Spring Operating Mechanism:

·  Equipped with a CT14 spring actuator for robust and precise mechanical linkage across three phases.

·  Compliance:

·  Conforms to international standardsGB1984 andIEC62271-100, ensuring quality and safety.

Product Real Shot

FAQ

Item:LW8A-40.5 SF6 Circuit Breaker

Q1: What is the rated voltage of the LW8A-40.5 SF6 Circuit Breaker?
A1: The rated voltage is 40.5 kV.


Q2: What is the interrupting medium used in this circuit breaker?
A2: It uses sulfur hexafluoride (SF6) gas as both the insulation and arc extinguishing medium.


Q3: How is the circuit breaker operated?
A3: The circuit breaker is equipped with a CT14 spring actuator, enabling mechanical linkage of three phases for synchronous operation.


Q4: Is the LW8A-40.5 compliant with international standards?
A4: Yes, it complies with GB1984 and IEC 62271-100 standards.

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