Gautam Elektrik Automation

Load Break Switch - PCESAIR


Construction

Load break switch The 11KV/22KV Load break switches are manufactured suitable for mounting on a panel. The panels are manufactured as per IS for Indoor or Outdoor application and as per customer requirements. The load break switches are manufactured in two types PCESAIR and PCESCOM. PCESAIR is snap action type and PCESCOM is compressed air quenching type. The PCESAIR type load break switch offers a simple and compact construction with epoxy insulators, double switch blades, forged contacts with arc quenching chamber, lagging pin and loop less current path. The Nylon/FRP insulation makes the switch light weight with greater electrical safety and mechanical strength.

The main frame is welded steel structure and the contacts are mounted on epoxy insulators. The upper fixed contact houses the arc quenching chamber and the connection terminal. The switch is also equipped with spring-assisted mechanism due to which constant speed is achieved during opening and closing operation. The switch is also provided with stored energy tripping device.

Special features


1.Compact and reliable design.
2.Rated SC making capacity upto 20KA (RMS) 50KA (PEAK) and make/break upto 630A.
3.Tripping initiation by means of fuses or relays.
4.The dry type arc quenching chambers join two switch principle for safe disconnections of heavy and small current.
5.Nylon/FRP insulation provides lighter weight, greater electrical safety and higher mechanical strength to the switch.
6.Mechanically interlocked earth switch.
7.Ring Main Unit configuration with incoming and outgoing as per requirements can also be provided.

Load break switch

Technical Data Standard Accessories Available Combinations
Parameter Description 11KV Description 22KV
Designation Indoor PCESAIR 126325 Indoor PCESAIR 246325 Auxiliary Switch
1NO + 1 NC
or
2NO + 2 NC
or
4 NO + 4 NC
Load Break Switch + Auxiliary Switch
Type of Break Air Break Air Break
Rated Voltage 12KV 24KV Load Break Switch + Auxiliary Switch + Earth Switch
Rated Insulation Voltage 28KV RMS / 75KV PEAK 50KV RMS / 125KV PEAK
Rated Current 630A 630A Load Break Switch + Auxiliary Switch + Fuse Trip Mech
Rated Frequency 50Hz 50Hz
No.of Phases 3 3 Load Break Switch + Auxiliary Switch + Fuse Trip Mech + Shunt Trip
No.of Breaks/Pole Single Single
Rated Short Circuit Withstand Current 25KA 25KA
Rated Short Circuit Peak Withstand Current 63KA 63KA
Rated Short Circuit Making Capacity 20KA RMS / 50KA PEAK 20KA RMS / 50KA PEAK Load Break Switch + Auxiliary Switch + Fuse Trip Mech + Shunt Trip + Earth Switch
Applicable Standard IS – 9920 IS – 9920