On Load Isolator

Outdoor Load Break Switches

Outdoor Load Break Switches-Fuse Combination

 

Three poles and Single pole

Rated Voltage 12kV, 24kV and 36kV

Rated Current 400A/630A


Load Break Switch with Fuse Combination


The outdoor On Load Isolator or Load Break Switches contained in the list are meant for the switching of feeder lines and ring mains or transformer feeders (in connection with MAX Fuses with tripping arrangement or with indication) for short circuit protection for switching under offload conditions.

 

They are produced in 6 modules:

1. For Vertical installation

2. For Horizontal installation on lattice towers, concrete or on wooden towers

3. Without fuses

4. In connection with MAX fuses with tripping arrangement & with making capacity

5. In connection with MAX fuses with tripping indication only

6. In connection with Drop Out fuses

 

The Load Break Switch complies with latest IEC 60265, VDE 0670 part 3.

The fuses comply with IEC 60282 and ANSI specification.


Technical Data

Rated Voltage

kV

Rated Current

A

Type

Rated Mainly active load breaking current A

Rated transformer off-load breaking capacity

kVA

Rated cable charging and line breaking current

A

Rated closed loop breaking current

A

Rated short time current kA/1 sec

Rated peak current

kA

Rated lighting impulse withstand voltage

kV

12

400

MAXOT12/400

400

1250

35

400

25

63

75/85

24

400

MAXOT 24/400

400

1250

20

400

16

40

125/145

36

400

MAXOT 36/400

400

1250

16

400

16

40

170/195

12

400

MAXOT112/400

400

1250

35

400

25

63

75/85

24

400

MAXOT124/400

400

1250

20

400

16

40

125/145

 

Features:

  • Hot dip galvanized switch shafts and base frames made of profiled steel.
  • Arrangement of the switch shafts in maintenance free bearings.
  • Hard porcelain/polycrete insulators are used.
  • Nickel plated electrolytic copper current paths.
  • Arc quenching medium of very low weight synthetic material, quenching by evaporation according to the hard gas principle.
  • MAX fuses rating upto 36kV, Breaking capacity 63kA, Elimination of gun powder and fire hazards by using mechanically operated striker pin in fuse.
  • Tripping force is 120kN
  • Drop out fuses can be supplied instead of MAX fuses.

 

36kV Outdoor Isolator
  •  Modified pole distances (dimension p) and extended shift (dimension x & y) are available at additional prices on request.
  • Sliver plated current paths will be provided on request.
  • Single pole outdoor On Load Isolator, On Load Isolator with earthing switch available on request.
  • If center attachment is desired, the dimensions b1 & b2 must be given when ordering.

 

MAXOT (for vertical installation) with Earth Switch

3 Pole Onload Isolator with Earth Switch

Rated voltage

kV

Rated current

A

Type

Weight

kg

Dimension (mm)

b

b1

b2

d

h

h1

k1

l

p

x

y

z

12

400

MAXOT 12/400

115

1000

130

270

1050

310

290

560

710

400

100

100

20

24

400

MAXOT 24/400

140

1250

165

335

1300

440

440

700

840

500

100

100

60

 

MAXOT1 (for vertical installation)

Onload Isolator for Vertical Installation

 

Rated voltage

kV

Rated current

A

Type

Weight

kg

Dimension (mm)

b

b1

b2

d

h

h1

k1

l

p

x

y

z

36

400

MAXOT1 36/400

225

2150

205

695

2200

460

460

720

860

900

100

100

85

 

MAXOT (for horizontal installation) with Earth Switch

Pole type Onload Isolator Horizontal Installation


Rated voltage

kV

Rated current

A

Type

Weight

kg

Dimension (mm)

b

d

h

h1

k1

l

p

x

y

z

z1

12

400

MAXOT 12/400

115

1000

1050

310

290

560

710

400

100

100

20

180

24

400

MAXOT 24/400

140

1250

1250

355

338

610

775

500

100

100

20

180

36

400

MAXOT 36/400

225

2150

2200

460

460

720

860

900

100

100

20

180

 

 

 

MAXOT WITH QUICK ACTING MECHANISM

Isolator with Quick Acting Mechanism


Rated voltage

kV

Rated current

A

Type

Weight

kg

Dimension (mm)

a

b

c

d

e

h

h1

k1

l

p

x

y

z

12

400

MAXOT1 12/400

170

1000

1000

1110

1050

1110

290

290

560

710

400

40

255

20

24

400

MAXOT1 24/400

200

1110

1250

1210

1300

1260

440

440

700

840

500

40

255

20

 

NOTE:

1. Current rating can be increased to 630A if desired.

2. As continuous developments are made to all MAX products, equipment supplied may differ in detail from that described above.

 

 


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