On Load Isolator with Fuse Combinations

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Product Description

Product Description

On Load Isolator with Fuse Combinations

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 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 fuses with tripping arrangement & with making capacity

5. In connection with 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.

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.

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.

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	OT12/400	400	1250	35	400	25	63	75/85
24	400	OT 24/400	400	1250	20	400	16	40	125/145
36	400	OT 36/400	400	1250	16	400	16	40	170/195
12	400	OT112/400	400	1250	35	400	25	63	75/85
24	400	OT124/400	400	1250	20	400	16	40	125/145

OT (for vertical installation) with Earth Switch

Rated voltage kV	Rated current A	Type	Weight kg	Dimension (mm)
Rated voltage kV	Rated current A	Type	Weight kg	b	b1	b2	d	h	h1	k1	l	p	x	y	z
12	400	OT 12/400	115	1000	130	270	1050	310	290	560	710	400	100	100	20
24	400	OT 24/400	140	1250	165	335	1300	440	440	700	840	500	100	100	60

OT1 (for vertical installation)

Rated voltage

Rated current

Type

Weight

Dimension (mm)

400

OT1 36/400

225

2150

205

695

2200

460

720

860

900

100

OT (for horizontal installation) with Earth Switch

Rated voltage kV	Rated current A	Type	Weight kg	Dimension (mm)
Rated voltage kV	Rated current A	Type	Weight kg	b	d	h	h1	k1	l	p	x	y	z	z1
12	400	OT 12/400	115	1000	1050	310	290	560	710	400	100	100	20	180
24	400	OT 24/400	140	1250	1250	355	338	610	775	500	100	100	20	180
36	400	OT 36/400	225	2150	2200	460	460	720	860	900	100	100	20	180

OT WITH QUICK ACTING MECHANISM

Rated voltage kV	Rated current A	Type	Weight kg	Dimension (mm)
Rated voltage kV	Rated current A	Type	Weight kg	a	b	c	d	e	h	h1	k1	l	p	x	y	z
12	400	OT1 12/400	170	1000	1000	1110	1050	1110	290	290	560	710	400	40	255	20
24	400	OT1 24/400	200	1110	1250	1210	1300	1260	440	440	700	840	500	40	255	20