u Overview
• BR10-PMS/SPS series padmount load break switches are installed on MV underground distribution lines and are used to branch or sectionalize lines.
• The motorized load break switch has built-in voltage and current sensors as standard to monitor the status of distribution lines and detect line faults.
• They guarantee constant operating speed and stable opening and closing operations regardless of the operator or method of operation by adopting the spring toggle mechanism.
• BR10-PMS series switches consist of 4 or 3 three-phase load break switches with three-phase gang operated three-position rotary puffer switches including earthing position in the same tank.
u Ratings
|
Ratings |
BR10-PMS-25 |
|
Applied standard |
IEC62271-103 |
|
Rated voltage(kV) |
25.8 |
|
Rated current(A) |
600 |
|
Rated frequency(Hz) |
60 |
|
Rated short-time withstand current(kA) |
12.5, 1sec |
|
Rated making current(kAp)) |
32.5 |
|
Rated power-frequencywithstand voltage(kV) |
60 |
|
Impulse withstand voltage(kV) |
125 |
|
Operating mechanism |
Manually operated and/or motorized |
|
Construction |
3 or 4 switched ways |
|
Electrical/mechanical endurance |
E3 and M2 class |
|
Endurance of earthing contact |
1,000 operations and 2 full making operations |
|
Insulation medium |
SF6 gas |
|
Interrupting medium |
SF6 gas |
u Key Features
• The main contactcan be opened or closed electrically or manually through the spring toggle mechanism, and the circuit connected to each way can be manually earthed only when the main contact is open.
• Intuitive mimic diagram to indicate the position of the earthing contact and main contact in each way.
• They are operated in the order of closed-open-earth, and are manually operated through single handling hole to provide perfect interlocking.
• Live line indicator to indicate the energized state of each way
• Deadbreak connection and dead front design
• Enclosure for outdoor installation with access from three directions
• Adoption of 3 position rotary puffer switch to ensure fast arc extinguishing and high operating efficiency during useful life
• Blade-shaped contacts with excellent electrical properties to ensure stable opening and closing operations
• Pressure relief device to release overpressure generated inside the tank
• Motorized padmount switches
ü Space for installation of control panel, RTU, and modem is provided in the enclosure
ü Dry type PT for AC auxiliarysupply
u Applications
• Used as a padmount load break switch for line fault detection and remote operation in combinationwith the control with communication functions so that it can be integrated into distribution automation system
• Used as a padmount load break switch for backfeeding on underground open loopor radial distribution networks with multiple normally open points
• Used as apadmount load break switch to branch and sectionalize MV underground distribution lines