Substation Vacuum Circuit Breaker, Dog-house

Medium-voltage distribution circuit breaker

Type OVCB series vacuum circuit breakers
-Rated working voltage: 12 kV, 15 kV, 17.5 kV, and 36 kV, up to 40.5kV
-Lightning impulse level (BIL): 75 kV, 125 kV up to 185 kV
-Rated continuous current: 630 A up to 3,150 A
-Rated short-time withstand current: 20 kA, 25 kA and 31.5 kA up to 40 kA

Advanced Technology for Improved Reliability
By combining the latest developments in circuit breaker technology with world-renowned quality,Type OVCB Vacuum Substation Circuit Breakers are the advanced medium-voltage circuit breakers available.
• Compliance to IEC/IEEE/ANSI standards
Designed and tested to comply with IEC/IEEE/ANSI standards.
• ISO 9001 certification
Designed and manufactured in a facility certified by ISO 9001.
• High seismic construction
High seismic construction according to ETGI-1.020/IEEE-693.

Benefits
• High-speed operation - Interrupting time of three cycles or less.
• Long life - Embedded pole interrupter protect contacts from corroding elements and contamination.
• Ease of maintenance - Interrupter assemblies and contact wear indicators accessible via a bolted panel.
• Reliability - A minimum of moving parts on the proven motor-driven, spring-charged modular operating mechanism.
• Durability - vacuum circuit breakers adopt special convection ventilation technology, with ultra-low resistance vacuum interrupter, greatly reducing temperature rise caused by long-term operation of vacuum circuit breaker and reducing power loss.

Standard Features
• Porcelain dry-type bushings with extended creepage.
• Multi-ratio bushing-type CTs for measurement & protection.
• Window for viewing status indicators and operation counter.
• Standard configuration for 1-closing coil and 2-opening coils.
• 12-pole auxiliary switch (6 'a' & 6 'b' contacts), latch check switch.
• Modular operating mechanism with integral manual charging handle.
• Available for extended CT, PT, Meter, Relay mounting in IP55 metal enclosure.