SF6 Gas
Load Break Switch

Rated voltage (kV) 24 / 36
Model/Type ORAP21-396-20MT
Switching operation class E 3
Mechanical endurance class M 2

Insulation Lightning impulse withstand voltage

– To earth and between phase (kVpeak)

– Across the isolating distance (kVpeak)

Power frequency withstand voltage

– To earth and between phase (kV)

– Across the isolating distance (kV)

125 / 170

145 / 195

50 / 70

60 / 80
Rated frequency (Hz) 50
Rated normal current (A) 630 / 630
Rated systematical interrupting current (A) 630
Rated short-time withstand current (kArms) 12.5, 16* / 12.5, 16*
Rated short-circuit making current (kApeak) 31.5, 40* / 31.5, 40 *
Rated short-circuit duration (second) 1
Rated mainly active load breaking capacity (A) 630
Number of operations at rate normal current interruption (cycle) 400
Mechanical endurance, in number of operation (cycle) 10,000
Rate filling pressure (kgf/cm2) 1.2
Pressure of SF6 when locking device operate (kgf/cm2) 0.8
IP class IP67
Cable spacing (C), (mm.) 250
Cable spacing (C), (mm.) 2.5
Weight (kg.) Min. 150 / Min. 235
Dimension (W x L x H) (mm.) 1,060 x 1,063 x 555 / 1,155 x 1,063 x 555
Standard IEC60265-1, IEC60694

Control Box for SF6
Load Break Switch

Rated supply voltage (VAC) 110, 230
Rated frequency (Hz) 50
Ambient temperature (ºC) Up to 45
Humidity (%) Up to 94
Battery capacity (Ah) 17
IP class IP 54
Weight (kg) Min. 80 Max. 106
 Dimension (H x W x D), mm 880H x 565W x 360D 1080H x 702W x 350D
Free space in box (H x W x D), mm 145H x 420W x 200D 430H x 600W x 150D

Solid Dielectric
Load Break Switch

Normal System Voltage (kV) 25.8 36
Rated Current (A) 630 630
Nominal Frequency (Hz) 50 50
Impulse Withstand Voltage (kV) 125 170
Power Frequency Withstand 50 50
Symmetrical Interrupting Current –Isc (A RMS) 630 630
Short Time Withstand Current (kA RMS) 12.5 , 16 12.5 , 16
Making Current (kA Asymmetrical Peak) 31.5 , 40 31.5 , 40
Applied Standard IEC 62271-103
Creepage Distances (Line to Ground) 860 mm
Centerline Spacing Between Phases 310 mm
Arc-Extinction Medium Vacuum interrupter
Insulation Material Hydrophobic Cycloaliphatic Epoxy Resin
Mechanism Duty Operations 10,000 cycle
Mechanical Operations Manual / Electrica
Current Transformer 600:1 A, Class 10P20
Operating Temperatures -40 °C to 55 °C
Weight (kg) 110

Automatic Circuit Recloser

 Nominal system voltage (kV)  27 38
 Rated current (A) 630 800
 Rated frequency (Hz) 50 50
 Impulse withstand voltage (kV) 125 170
 Power frequency withstand –Dry (kV) 60 70
 Power frequency withstand –Wet (kV)
 50 60
 Symmetrical interrupting current –Isc (kArms)  12.5/16 16
 Short time withstand current (kArms)  12.5/16 16
 Making current (kA asymmetrical peak)  31/40 40
 Creepage distances (line to ground) (mm.) 840
 Centerline spacing between phases (mm.) 310
 Arc-Extinction medium Vacuum interrupter
 Insulation Material Hydrophobic Cycloaliphatic Epoxy Resin
 Mechanical operations (cycle) 10,000
 Voltage sensor accuracy (%)  1% or 3%
 Current transformer accuracy class 1000:1A, Class 3
Operating Temperatures -40 °C to 65 °C
Weight (kg) 140

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