LLS® Load and Line Switcher Family

Switch with confidence under all system conditions

The Southern States innovative LLS® Load & Line Switcher switch attachments add reliable and cost effective load breaking, loop splitting, and line dropping capability to vertical break group operated disconnect switches. In addition to working with the Southern States family of vertical break switches, the LLS® adapts to most other manufacturer's disconnect switches and can be purchased directly from the switch manufacturer or as a kit from Southern States for field retrofit. The LLS® is also well suited for use in transformer magnetizing current interrupting, cable switching, and reactor switching applications.

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3-phase LLS-I on EV-2 Switch

  • 3-phase_lls-i_on_ev-2_switch
  • Lls-i_on_ev_switch
  • 3-phase_lls-i_on_ev_switch
  • Lls-i_on_ev-2_jaw
  • Lls-i_on_ev-2
  • Lls-i_side_profile
  • Angled_profile_view_of_115_kv_lls-ii-2000
  • Angled_profile_view_of_ev-2_115_kv_2000_a_with_lls-ii-2000_b
  • Close_up_profile_view_of_230_kv_lls-ii-2000_equipped_ev-2_switches_
  • Ev_69-1200_with_lls-ii
  • Ev-2_138-2000_with_lls-ii-2000_interrupters
  • Side_mount_phase_over_phase_lls-ii-2000_161_kv

Switch Interrupter Selection Guide

 Product

Load Breaking

Loop SplittingLine/Cable Dropping Transformer Magnetizing
Standard Arcing Horn

X X
Quick Break Whip

X X
High Speed Whip-HSW

X X
Load and Line Switchers ( LLS® ) X X X X

 

  • Single gap SF6 puffer interrupters insure disturbance free switching of loads, lines, power transformers, cables, buses, and reactors
  • 2000 full load operations with no maintenance
  • Shipped fully pressurized and ready for installation
  • Factory high potential testing eliminates need for field test
  • Visual dielectric indication via a color coded, temperature compensated gauge provides confident switching and enhanced personnel safety
  • Full rated device elinates concern over switching sequence errors
  • Can be mounted on horizontal upright, vertical mount, and phase-over-phase side mounted vertical break disconnects
Maximum Voltage Rating 38 kV-72.5 kV
Load Breaking Capability 2000 A
Line Dropping Capability 300 A
Loop Splitting Capability 2000 A
Full Load Operations 2000
Ambient Temperature Range -40.0 C to 50.0 C standard
Consult factory for -50.0 C rating
LLS-II-2000 Ratings
Maximum Voltage Rating 72.5 kV - 170 kV 245 kV
Load Breaking Capability 2000 A 2000 A
Line Dropping Capability 300 A 200 A
Loop Splitting Capability 2000 A 2000 A
Full Load Operations 2000
Ambient Temperature Range -40.0 C to + 50.0 C standard
-50.0 C to +50.0 C Optional (Consult factory for ratings)

 

LLS-II-3000 Ratings
Maximum Voltage Rating 72.5 kV - 170 kV 245 kV
Load Breaking Capability 3000 A 2000 A
Line Dropping Capability 300 A 200 A
Loop Splitting Capability 3000 A 3000 A
Full Load Operations 2000
Ambient Temperature Range -40.0 C to + 50.0 C standard
-50.0 C to +50.0 C Optional (Consult factory for Ratings)
Maximum Voltage Rating 123 kV-245 kV
Load Breaking Capability N/A
Line Dropping Capability NA
Loop Splitting Capability 2000 A (*)
Full Load Operations N/A

 

(*) For loop splitting applications above 72.5kV, the transient recovery voltage must not exceed 30kV.

Load Breaking

Transformer Magnetizing Current Interrupting

Reactor Switching

Load Breaking

Transformer Magnetizing Current Interrupting

Reactor Switching

Switch Interrupter Attachments