ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS

1.Rated frequency

50/60Hz

2.Rated Voltage

40.5kV,r.m.s

3.Rated short-time power-frequency withstand voltage (1 min)

95kV,r.m.s

4.Rated lightning impulse withstand voltage

185kV,Peak

5.Rated Current

2000A

6.Circuit resistance at lowest rated contact force

≤20Micro ohms

7.Rated short-circuit breaking Current

20kA,r.m.s

8.Rated short-time withstand current

20kA,r.m.s

9.Rated duration of short-circuit

4s

10.Rated peak withstand current

50kA,r.m.s

11.Rated short-circuit making Current

50kA,r.m.s

12.Max. Dc component

40%

13.*Rated breaking current of single capacitor bank

630A,r.m.s

14.*Rated breaking current of back-to-back capacitor bank

400A,r.m.s

15.Rated operating sequence

O-0.3(0.5)s-CO-180s-CO

MECHANICAL DATA

1.Interrupter Weight(Approx.)

12.35kg

2.Weight of movable parts

4.1kg

3.Closing force due to bellow and atmosphere

170±40N

4.Force required to hold contacts open at full stroke

320±50N

MECHANICAL REQUIREMENTS(REF. VCB)

1.Clearance between open contacts

20±2mm

2.Average opening speed(average of first 75% of contact gap)

1.6±0.3m/Sec

3.Average closing speed(average of last 30% of contact gap)

1.3±0.2m/Sec

4.Rated added external contact final force

3100±200N

5.Contact bouncing duration at closing operation

≤2ms

6.Closing and Opening non-simultaneity of three-phase Contacts

≤2ms

7.Maximum Rebound during opening

≤2mm

LIFE

1.Electrical Life at Rated Normal Current

20,000Operations

2.Electrical Life at Rated Short Circuit Current

50Operations

3.Mechanical Life

30,000Operations

4.Contact Erosion Limit

3mm

5.Shelf Life

20Years

1.Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008.
 2.* Rated Characteristics to be given on request