40.5kv AC Sf6 Circuit Breaker Model Lw8a

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: Lw8a-40.5KV Voltage AC Sf6 Circuit Breaker
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: SF6
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
• Certification: ISO9001-2000
• Transport Package: Wooden Case
• Specification: Rated Voltage: 40.5KV
• Trademark: Jecsany
• Origin: Ningbo
• HS Code: 8504220000
• Production Capacity: 5000

Product Description

Product Description

1. The LW8-40.5 breaker has the struclure which is outdoor porcelain post type. l can be matched with CT35 spring mechanism and has T sha.pe .The circuit breaker is small and ight and has good qualties with low operation power, lower noise, high relabiity, simple structure. it is alsoconvenient for the operalor to insta and debug the breaker. The mechanical ile is not less than 10000times and the breaker can be operatedfrequently.

2. The breaker uses pneumatic arc.extinguishing chamber, so the breaking performance is excellent and the electrical life can reach up to 20times, The sealabilty is relable. Static seal uses 0 shape grommet structure, while dynamic seal uses structure of V shape grommet with springpressure. The secondary terminal block is produced by impored mould according to he pressure inieclion technologies, So it has high peror.mance of ageing resistance and makes sure that the annual leakAge rate of SF6 < 0.5%.

3, The metal frame and the support of the circuit breaker are bended with a whole deep steel plate. t used high strength standard accessoriesand the mechanism is reliable.

4. The measure iron cove of the inner or outer curent transformer is made of materials with the performance of crystalite (ally) high conductionMagnelic, So the accuracy class can reach up to 0.2 or 0.2S, Every phase of the product can match with 2-4 pieces of current transformers
 

Product Parameter (Specification)

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)		20
Cumulative breaking times of rated current(time)		2000
Annual leakAge rate of SF6(%)		≤0.5
Water content of SF6(V\V)(PPm)		≤150
Outer insulating leakAge ratio distance(mm/kV)		≥25,≥31
Weight of the circuit breaker(KG)		1000

Detailed Images