Load Break Switches

Features:

  • Self developed air blast arc quenching technology.
  • Viewing window to analyze contact position.
  • Tripping arrangements : Remote trip, Manual, Shunt coil & Fuse trip arrangement.
  • Space heater with thermostat.
  • Indicating Lamps & illumination Lamp.
  • Available in both Indoor and Outdoor version.

Interlocks:

  • Access to the HT HRC Fuse chamber is possible only after switching OFF the main switch.
  • The inner door will not be able to open when Main switch is in ON condition.
  • The main switch and the earth switch are mechanically interlocked such that the earth
  • Switch can be switched ON only after main switch has been switched OFF & vice versa.

Design Specifications:

DESCRIPTION PARAMETERS
Panel Type Designation SLSA 12 SLCM 12
Type of Operating Mechanism Sprign Assisted VCB Mechanism
Operating Method Manual Manual / Motor
Charging Motor Rating ---- 22OVAC/DC, 80W
Closing Coil Rating ---- 11OVDC/22OVAC,200W
Weight 32OKg 340Kg
Fuse Detail Transformer / Capacitor protection
Fuse Rating 40 - 200 A
Auxiliary Contact 3N0 + 3NC
Phase - Phase Distance 165mm (Insulated)
Panel height 1820mm
Panel Depth 1460mm
Panel Width 700 mm
Structure 2mm sheet with Powder painting RAL:7032
Installation Indoor & Outdoor
Cable termination IN & OUT Bottom cable entry

Technical Specifications:

DESCRIPTION PARAMETERS
Type of break Air
Rated Voltage 12 KV
Nominal System voltage 11 KV
Rated Current 630/800 A
Power Freq. withstand Voltage 28 KV rms
Impulse Withstand Voltage 340Kg
Rated Frequency 50/60 Hz
Number of Phases 3
Rated Short time withstand Current 25KA/1 Sec
Rated making Capacity 63 KA
Panel height 1820mm
Panel Depth 1460mm
Panel Width 700 mm
Structure 2mm sheet with Powder painting RAL:7032
Installation Indoor & Outdoor
Cable termination IN & OUT Boftom cable entry

Available Combinations:

DESCRIPTION TYPE DESIGNATION CONFIGURATION
Ring Feeder or Incomer Indoor/Outdoor Load Break Switch + Earth Switch (LBS+ES)
Ring Feeder or Incomer with Earth Leakage Relay Load Break Switch + Earth Switch with CBCT & Earth Leakage Relay (LBS+ES+ELR)
Tee-Off Feeder or Outgoing Load Break Switch + HT HRC Fuse + Earth Switch (LBS+FT+ES
Tee-Off Feeder or Outgoing Load Break Switch + HT HRC Fuse + Earth Switch with CBCT & Earth Leakage Relay (LBS+FT+ES+ELR)

ADVANTAGES :

  • Safe due to direct access to live parts is not possible.
  • Used in RMU with Multi panel configuration.
  • Main switch & Earth switch are mechanically interlocked.
  • Easy to access the Fuse in HT Fuse Chamber.
  • Easily repairable on site.
  • Completely door closed operation for operator safety.
  • Reliable & Robust Mechanism.

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