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LW8A-40.5 SF6 Circuit Breaker

Basic Information
Place of Origin: XIAN,CHINA
Brand Name: XG
Certification: ISO,CCC
Model Number: LW8A
Minimum Order Quantity: 1 SET
Packaging Details: WOODEN CASE
Delivery Time: 7-15 DAYS
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000 SET
Detail Information
Rated Voltage: 40.5kv System Current: 400A-3150a
Function: Control And Protection Installation Location: Power Plant
Warranty: 12 Months OEM: Yes
Rated Current: 400A-3150A Operation Type: Electric Or Manual
Life Span: 15 YEARS
High Light:

LW8A-40.5 SF6 Circuit Breaker


3150A SF6 Circuit Breaker


40.5kv SF6 Circuit Breaker

Product Description

1. LW8A-40.5 Type 3 Phase 33kv 36kv 10.5kv SF6 Circuit Breaker


LW 8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universal range of application for the three-phases electrical system with alternating current 50HZ and the rated voltage 40.5kV.It is used for contolling and protecting the electrical system and measuring the current transformers.


Rated voltage:40.5kV


2. Applicable place: 


1.Power grid equipment.

2.Industrial and mining enterprise equipment.

Including current transformer for measurement and protection.It can directly replace SW2-35 oil less circuit breaker and various oil circuit breakers with transition bracket, and can also be used as contact circuit breaker and switch capacitor bank of CT14 spring mechanism.


3. Advantages


1.It conforms to GB1984 standard,GB/T28001-2011 idt OHSAS18001:2007,GB/T 24001-2004 idt ISO14001:200;

2.Excellent fracture performance, short arcing time and long service life;

3.The mechanical life is more than 3000 times;

4.Frequent operation, each set can be installed with 12 current transformers;

5.The new sf6mkz pointer type densitometer, the pressure gauge reading is not affected by the temperature change.


4.  Environmental Conditions


Ambient temperature: -30°C~+40°C
Relative humidity: ≤95%or≤90%

The daily average saturated vapor pressure: ≤2.2KPa;

The monthly average value: ≤1.8KPa.

Altitude: ≤3000m

Seismic intensity: ≤8

Air pollution level: Level Ⅲ

Wind pressure: ≤700pa

The installation shall be free from fire, explosion, severe vibration, chemical corrosion and serious pollution.


5. Technical Parameter


Name Data
Rated voltage 40.5
Rated current(A) 1600/2000
Rated Insulate level Power frequency withstand voltage(kV)1min 95
Thunder impulse withstand vltage (kV) 185
Rated short-circuit breaking current(kA) 25/31.5
Rated outof-phase breaking current (kA) 7.9/10
breaking current of earth fault in different phase(kA) 27.4/34.8
Rated breaking current of single capacitor bank(A) 400
Rated Operating sequence O-0.3S-CO-180S-CO
Rated SF6 gas pressure(Mpa) 0.5
Switch-off time(on rated voltage)(ms) 30≤t≤40
Switch-on time(on rated voltage)(ms) 60≤t≤80
Rated short-circuit making current(peak) (kA) 63/80
Rated short-circuit duration (s) 4
Rated short-circuit with stand current (kA) 25/31.5
Rated peak value withstand current(kA) 63/80
Mechanical life (time) 10000

Cumulative breaking times of rated short-circuit

breaking current 31.5 kA/40kA(time)

Cumulative breaking times of rated current(time) 2000
Annual leakAge rate of SF6(%) ≤0.5
Water content of SF6(VV)(PPm) ≤150
Outer insulating leakAge ratio distance(mm/kV) ≥25,≥31
Weight of the circuit breaker(KG) 1000


6. Photo


LW8A-40.5 SF6 Circuit Breaker 0

7. Factory


LW8A-40.5 SF6 Circuit Breaker 1

8. Delivery


LW8A-40.5 SF6 Circuit Breaker 2


9. FAQ


1. Send the technical data, better for all useful information; we will make a good recommendation.

If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.

2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.

3. Usually shipped by sea, small order or urgent order we can send you by air.

4. All our activities are accredited to ISO 14001:2015 and IEC standard.

5. Technology ensure the quality satisfy international request.

Contact Details

Phone Number : +8613319220197

WhatsApp : +8613319220197