SF6 LW36-40.5 Outdoor Vacuum Circuit Breaker | High Voltage Protection

Feature

Self-Energizing Arc Extinguishing Principle: Low operating power.

Arc Extinguishing Chamber Valve - Made from a new high-temperature-resistant, lightweight special alloy, providing more stable and reliable airflow characteristics and breaking performance compared to traditional materials.

Nozzle - Constructed from PTFE (polytetrafluoroethylene) with additional trace components, ensuring stable breaking performance and strong resistance to arcing.

Porcelain Insulator - Excellent bending strength with strict production processes and quality control, ensuring safe operation of the circuit breaker.

Insulation Rod - Features unique anti-loosening measures for enhanced operational reliability.

Spring Operating Mechanism - Low operating power, lightweight, low noise, no leakage, and high reliability.

Key Components - Made from alloy steel, ensuring high strength, wear resistance, and low failure rates during frequent operations.

Electrical Components - Secondary circuit electrical components and SF6 density controllers are of high quality.

Craftsmanship and Materials - The installation base is made from thick steel plates, with hot-dip galvanization for surface treatment. Exposed fasteners are high-strength hot-dip galvanized bolts, while transmission rods use high-strength aluminum or stainless steel profiles. The mechanism housing is made from stainless steel with excellent corrosion resistance.

Parameter

1. Breaking Performance - Utilizes self-energizing arc-extinguishing technology, capable of continuously breaking a short-circuit current of 40.5 kA for 22 times without maintenance.
2. Mechanical Operation Performance - Continuous mechanical operation life reaches 6000 times, and with simple adjustments, it can exceed 10000 times, ensuring high operational reliability.
3. Insulation Capability - External insulation creepage distance >31mm, strong resistance to pollution, suitable for safe operation in harsh environments up to 3000m altitude. The insulation rod can withstand 250 kV/5min in air.
4. Sealing Performance - Ensures the annual leakage rate of SF6 gas is far less than 0.5%.
5. Strict Dehumidification Process -The moisture content in SF6 is far below that of comparable products.

Tech. parameters		Parameter value
Rated voltage		40.5
Rated frequency		18415
Rated current		1000/1250/1600/2000/2500/3150/4000
Rated short circuit breaking current		25	31.5	40
Rated short-circuit switching current (peak value)		60	80	0
Rated short circuit withstand current (Thermal current)		25	31.5	40
Rated peak withstand current (Thermal current)		63	80	100
Rated out-of-phase breaking current		6.3	8	10
Cumulative breaking times under rated short-circuit breaking current		30
Rated short circuit duration		4
Rated lightning impulse withstand voltage	phase-ground, interphase	185
	between fractures	215
Rated 1min power frequency withstand voltage	phase-ground, interphase	95
	between fractures	118
Rated operating sequence		O-0.3s-CO-180-CO
Closing time		≤100
Opening time		≤50
Breaking time		≤50
Close-open time		≤60
Closing synchronicity		≤3
Opening synchronicity		≤2
Closing coil, opening coil voltage		DC:220/110
Energy storage motor voltage		AC:220/110 DC:220/110
Single loop resistance		≤70
Rated SF6 other pressures		0.45
Annual gas leakage of SF6 gas		≤5%
SF6 gas moisture content		≤150
Radio interference level		≤2500
Mechanical life		10000