B-2 recloser/regulator bypass medium-voltage disconnect switches and assemblies

15-38 kV

Rated continuous current up to 900 A
Lightning impulse (BIL) up to 200 kV

Outdoor systems for a more resilient grid

Power distribution grids are becoming more and more complex. To facilitate a reliable power supply, increased resilience is needed. Therefore, we focus on helping customers to improve the reliability and efficiency of their distribution grids. From the substation to the end users, we offer a complete portfolio for energy distribution over the entire supply chain: from planning through design and manufacturing up to installation, operation and service. By keeping them a step ahead of their challenges from end to end, utilities are enabled to optimize less developed network environments towards a future-oriented smarter grid.

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B-2 medium-voltage recloser/regulator bypass disconnect switches

A versatile bypass solution, the type B-2 bypass switch is purposely designed as a recloser bypass and can also be used as a regulator bypass. Underhung and angled pole-mounting brackets contribute to ease of installation.

Watch the video below to learn more about Siemens medium-voltage air-break disconnect switches.

Medium-voltage air-break disconnect switches overview video

Application:

Recloser or regulator bypassing to reduce the impact of equipment maintenance on network reliability.

Features include:

Robust square-tubular copper blades.

Options:

Porcelain or polymer insulators
Stop-position angle
Left- or right-hand bypass operation
Custom terminal arrangements
Loadbreak hooks.

Pend Oreille Public Utility District installation of B-2 recloser/regulator bypass and CMR compact modular recloser on crossarm

CMR is configurable as single- or three-phase recloser

Easy visible indication with B-2 disconnect switch

Ratings:

Voltage ratings of 15, 27, and 38 kV
Rated continuous currents of 600 and 900 A
Lightning impulses (BIL) of 110, 150, and 200 kV.

Bypass recloser assembly type B-2

Siemens type B-2 bypass assembly offers quick and simple installation. Originating from the reliable B-2 single-phase switch, all three-phase units ship preassembled on the crossarm for easy installation at the site, which reduces time and overall installation costs. A B-2 bypass assembly is customizable with porcelain or polymer insulators and galavanized or fiberglass bases. The assembly provides a means for bypassing and disconnecting pole-mounted reclosers. Proper sequence operation allows the recloser to be bypassed and isolated from the system.

B-2 switch- single-phase, three pull bypass

Goals:

Reduce downtime when maintenance is required
Minimize installation time through pre-assembly.

Features and benefits:

15.0 kV, 25.0 kV and 38.0 kV voltage ratings
Factory installed on galvanized or fiberglass arm
Adjustable pole gain provides angling option per field conditions
Single- or double-point lift bracket
Arm length 8’ (2.4 m), 10’ (3.0 m), or 12’ (3.7 m) (custom phase-spacing available)
Customer terminal pad options to simplify terminal connections
Easy identification of bypass blades in open or closed position
Three-pull design
Square copper-tube blades
High-pressure coin silver contacts
Load-break hooks available
Left- or right-hand bypass blade
Custom configurations available
Coastal environment options
Quick installation
Factory adjusted.

Series	Maximum nominal voltage kV	Basic insulation level kV	Continuous current
2913	15	110	600/900
2913	25	150	600/900
2913	38	200	600/900

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