LW8-40.5 type outdoor high-pressure sulfur hexafluoride circuit breaker is three-pole ac 50 hz, outdoor high voltage switch equipment, applicable to 40.5 kV power transmission and distribution system control and protection, can also be used to contact circuit breaker and movable capacitor group. LW8-40.5 type circuit breaker with CT14 type spring operation mechanism.
Accord with national standard GB1984-89 AC high voltage circuit breaker, and the international electro-technical commission standard IEC56 publications of high voltage circuit breaker.
Structure: ELCB
Certification: ISO9001-2000, CCC
Operation: Energy-storage Type
Installation: Fixed
Arc-extinguishing Medium: SF6
Speed: Normal Type Circuit Breaker
HS Code: 85353000
Specification:
- Outdoor type,
- SF6 circuit breaker,
- Dirtness resistance,
- Spring mechanism.
Feature advantages
- open circuit performance is good, short arc time and current life is long, continuous open 31.5 kA short circuit current at rated voltage 21 times don't repair, do not replace the sulfur hexafluoride gas;
- insulation and reliable;
- high mechanical reliability, frequent operation;
- movable capacitor current is 400 a group without renewed;
- simple structure, small volume, no maintenance cycle is long.
LW8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universal range of applications for the three-phases electrical system with alternating current 50HZ and rated voltage 40.5kv. It is used for controlling and protecting the electrical system and measuring the current transformers.
|
Parameter |
unit |
data |
|
Rated voltage |
kV |
40.5 |
|
Lightning impulse withstand voltage |
kV |
185 / 215 |
|
Power frequency withstand voltage(1min) |
kV |
95 / 118 |
|
Rated current |
A |
2000 |
|
Mechanical life |
time |
3000 |
|
Sf6 gas rated pressure(20°C) |
MPa |
0.45 |
|
Closure pressure(20°C) |
MPa |
0.40 |
|
Rated short circuit breaking current |
kA |
31.5 |
|
Rated short circuit making current(peak) |
kA |
80 |
|
Rated short circuit withstand current |
kA |
31.5 |
|
Rated peak withstand current |
kA |
80 |
|
Rated out-of-phase breaking current |
kA |
7.9 |
|
Rated duration of short-circuit |
s |
4 |
|
Closing time |
ms |
≤100 |
|
Opening time |
ms |
≤60 |
|
Close-open time |
ms |
≥130 |
|
Rated operating sequence |
open-0.3s-close-open-180s-close-open |
|
|
The rated current opening and closing a single capacitor group |
A |
400 |
|
Accumulative breaking times of rated short circuit on power flow |
time |
21 |
|
yearly gas leakage rate |
% |
≤0.3 |
|
Sf6 gas water content(20°C) |
ppm(v/v) |
≤150 |
Working conditions:
- Sunlight: 1000W/m
- Relative humidity: Daily average value is 95%
- Monthly average value is 90%
- Seismic: Horizontal acceleration: 0.250g
- Vertical acceleration: 0.125g
- Pollution level: (25 mm/kV)
- Thickness of ice covering: 10 mm
- Protection degree: IP5XW
- Max wind velocity: 34m/s
- Note: Customized products are available.
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