Unitas anularis metallica solidis insulis inclusa 12/24kV

C

Unitas disjungendi oneris cum casu unico standard

F

Combinatio disjungentis oneris et fusibilis

V

Unitas apparatorum

D

Unitas cabalis (sine commutatore)

+

Casus lateralis busbar

-

Casus superior busbar

SL

Unitas copulans busbar

M

Unitas mensurandi

PT

Unitas PT

1K2(4)

Unitas disjungendi oneris bimanualis

Rated voltage

kV

12/24

12/24

12/24

Rated frequency

Hz

50

50

50

Rated current

A

630

Depend on rated current of fuse

630

P.F.withstand voltage (phase to phase.phase to earth)

kV

42/65

42/65

42/65

Ated insulation levels

P.F.withstand voltage(Across open contacts)

48/79

48/79

48/79

P.F.withstand voltage (Control and auxiliary circuit)

2/2

2/2

2/2

Lightning impulse withstand voltage (phase to phase, phase to earth)

75/125

75/125

75/125

Across open contacts

85/145

85/145

85/145

Ogauge pressure test

—

Pass

Pass

Pass

Rated short time withstand current

kA

20/4s/20/3s

—

20/4s/20/4s

Rated peak withstand current

kA

63

——

63

Rated short circuit making current

kA

50 or 63

Subject to high-voltage fuse

50

Rated short circuit breaking current

kA

—

Subject to high-voltage fuse

20/20

Rated transform current

A

—

1750/1400

—

Rated active load breaking current

A

630

—

—

Rated Closed loop breaking current

A

630

—

630

Mechanical life

Load break switch/breaker

Time

5000

5000

10000

Isolating switch/earthing switch

5000

5000

5000

Loop resistance

μΩ

≤120

—

≤120

Inflation pressure

Rated inflation pressure(absolute pressure)

bar

1.3

1.3

1.3

Minimum inflation pressure(absolute pressure)

1.2

1.2

1.2

Relative rate leakage of gas

%

≤0.02

≤0.02

≤0.02