ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS

1.Rated frequency

50/60Hz

2.Rated Voltage

12kV,r.m.s

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

42kV,r.m.s

4.Rated lightning impulse withstand voltage

95kV,Peak

5.Rated Current

630A

6.Maximum Contact Resistance at Minimum Closing Force

≤35Micro ohms

7.Rated short-time withstand current

20kA,r.m.s

8.Rated duration of short-circuit

4s

9.Rated peak withstand current

50kA,r.m.s

10.Rated short-circuit making Current

50kA,r.m.s

11.Rated active load breaking current

630A

12.Rated closed-loop breaking current

630A

13.Rated capacity of no-load transformer

1250kVA

14.Rated cable-charging breaking current

10A

15.*Rated breaking current of single capacitor bank

400A

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

400A

MECHANICAL DATA

1.Interrupter Weight(Approx.)

1.81kg

2.Weight of movable parts

0.54kg

3.Closing force due to bellow and atmosphere

70±30N

4.Force required to hold contacts open at full stroke

130±50N

MECHANICAL REQUIREMENTS(REF. LBS)

1.Clearance between open contacts

9±1mm

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

1.2±0.2m/s

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

0.6±0.2m/s

4.Rated added external contact final force

1000±100N

5.Added external contact force at contact touch point

750±80N

6.Contact bouncing duration at closing operation

≤2ms

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

≤2ms

8.Maximum Rebound during opening

≤2ms

LIFE

1.Storage life

20years

2.Mechanical endurance

10000Operations

3.Contacts limit erosion

3mm

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