CRADLE
There are three basic cradle solutions to meet a variety of insulator maintenance and replacement requirements.
All are built with RITZGLAS® tubes for work on 110 to 800 kV anchor or suspension strings.
- Single Insulator Cradles
It is generally used in 110 to 230 kV strings, supported by a pair of wire tongs or strain link stick.
- Cradle with fittings
It is used in 345 to 500 kV strings and in combination with cradle supports to allow insulators movement.
- Cradle with bracket (side opening) for extra high voltage
It is used in anchor strings up to 800 kV to allow single or multiple string removal.
Single Insulator Cradles
Constructed with Ø 38 mm RITZGLAS® tubes, this series of single cradles has two steel pins at their front, which are used to support the insulator string with a pair of wire tongs or strain link stick. At the rear of the crib there are large eyes and ropes for coupling to the structure as an anchor point. In this way, the insulators can be raised or lowered to a more suitable position for replacement. When lowering the insulator string is not necessary, the cradles are mounted to the eyes located on the yokes coupled to the strain poles. |
Catalog Reference | Maximum Capacity | Insulating Length (m) | Approx. Weight | |
kg | kg | |||
RH1840-4 | 6 insulators up to Ø 254 mm | 1,22 | 5,80 | 12,79 |
RH1840-6 | 10 insulators up to Ø 254 mm | 1,83 | 7,00 | 15,43 |
RH1840-8 | 14 insulators up to Ø 254 mm | 2,44 | 8,30 | 18,30 |
RH1840-10 | 18 insulators up to Ø 254 mm | 3,05 | 12,20 | 26,90 |
RH1840-12 | 22 insulators up to Ø 254 mm | 3,66 | 14,70 | 32,41 |
Catalog Reference | Description | Approx. Weight | |
kg | kg | ||
FLV19067-1 | Cradle center spacer | 0,80 | 1,76 |
FLV17458-1 | Metal spacer with side cradle holders | 1,00 | 2,20 |
FLV17445-1 | Metal spacer with side eyes and 2.50 m insulating rope at its cradle ends | 1,60 | 3,53 |
RH4540 | RITZGLAS® tube, Ø 38 mm x 1.22 m, with plastic end fitting | 0,90 | 1,98 |
RH4540-1 | RITZGLAS® tube, Ø 38 mm x 1.83 m, with plastic end fitting | 1,30 | 2,87 |
RH4540-2 | RITZGLAS® tube, Ø 38 mm x 2.44 m, with plastic end fitting | 1,70 | 3,75 |
RH4540-3 | RITZGLAS® tube, Ø 38 mm x 3.05 m, with plastic end fitting | 2,10 | 4,63 |
RH4540-4 | RITZGLAS® tube, Ø 38 mm x 3.65 m, with plastic end fitting | 2,50 | 5,51 |
Cradle with fittings
The deep design of the cradle is a safe way to prevent accidental fall of the insulator string. In addition, it is reinforced by the upper insulator retaining plate, which securely holds it during transport. The insulator plate has dual use: on one side fits insulators up to Ø 273 mm; and, on the opposite side, it adapts to insulators up to Ø 286 mm. The cradle can be easily lowered or lifted for insulator change through the forged steel swivel eyes at one end and the other with the aid of the steel handle (R070184) attached to a strain link stick, and it also has an auxiliary hook (R068922). The steel strap and hook are supplied with the cradle. |
Catalog Reference | Maximum Capacity | Insulating Length (m) | Approx. Weight | |
kg | lb | |||
RC401-0015 | 25 insulators up to Ø 286 mm | 3,40 | 16,40 | 36,16 |
RH1950-9 | 19 insulators up to Ø 286 mm | 2,69 | 14,90 | 32,85 |
Catalog Reference | Description | Approx. Weight | |
kg | kg | ||
FLV17453-1 | Cradle center metal spacer | 1,60 | 3,53 |
FLV17446-1 | Aluminum cradle plate | 2,60 | 5,73 |
FLV17447-1 | Metal spacer with side cradle holders | 1,60 | 3,53 |
R068922 | Plastic coated steel hook | 0,55 | 1,21 |
R070184 | Galvanized steel handle | 1,10 | 2,43 |
FLV18594-4 | Ø 38mm RITZGLAS® tube for RC401-0015, with plastic terminal and metal head | 3,23 | 7,12 |
FLV18593-4 | Ø 38mm RITZGLAS® tube for RC401-0015, with plastic terminals | 2,60 | 5,73 |
FLV18594-3 | Ø 38mm RITZGLAS® tube for RH1950-9, with plastic terminal and metal head | 2.70 | 5.95 |
FLV18593-3 | Ø 38mm RITZGLAS® tube for RH1950-9, with plastic terminals | 2.07 | 4.56 |
Cradle Support
It is made with Ø 64 mm RITZGLAS® tube and its main structure has a heat-treated aluminum head with forged steel swivel eye and three pairs of hooks, which are coupled to a spiral link pole and act as a support.
Catalog Reference | Maximum Capacity | Insulating Length (m) | Rated Work Capacity | Approx. Weight | ||
daN | lb | kg | lb | |||
RH1950-90 | Cradle support with 3 pairs of hooks | 2,97 | 227 | 500 | 13,40 | 29,54 |
Support Cradle
It has been developed for the selective removal of a single insulator string, particularly, in double, triple, or quadruple anchor strings. Using this cradle, it is not necessary to remove the upper strings to extract the lower strings.
Constructed with Ø 64 mm RITZGLAS® tube as its main element, it has three Ø 38 mm pipes.
The tubes has swiveling eyes at its ends.
0.38 m hooks are used in mountings with single or double anchor strings, while with the 0.79 m hook is used to remove quadruple lower anchor strings.
The insulator plate has dual use: on one side fits insulators up to Ø 279 mm; and, on the opposite side, it adapts to insulators up to Ø 324 mm.
In conjunction with the cradle, tie rods are provided for coupling to the boom pole, a plate for retaining the upper insulator, hook arrangements, and metal spacers.
Catalog Reference | Description | Rated Work Capacity | Approx. Weight. | ||
daN | lb | kg | lb | ||
RC401-0354 | Long insulating cradle of 4.83 m , 4 long support hooks of 0.38 m, 2 metal spacers and 1 plate | 454 | 1000 | 66,00 | 136,69 |
RC401-0355 | Long insulating cradle of 4.83 m , 4 long support hooks of 0.79 m, 2 metal spacers and 1 plate | 64,00 | 141,10 | ||
RC401-0356 | Long insulating cradle of 3.91 m , 4 long support hooks of 0.38 m, 2 metal spacers and 1 plate | 58,50 | 128,97 | ||
RC401-0357 | Long insulating cradle of 3.91 m , 4 long support hooks of 0.79 m, 2 metal spacers and 1 plate | 60,50 | 133,38 | ||
RC401-0358 | Long insulating cradle of 2.69 m , 3 long hooks of 0.38 m and 1 plate | 227 | 500 | 42,60 | 93,92 |
RC401-0359 | Long insulating cradle of 2.69 m , 3 long hooks of 0.79 m and 1 plate | 44,00 | 97,00 |
Item | Catalog Reference | Description | Approx. Weight | |
kg | lb | |||
1 | FLV01852-1 | Cradle tie rod support | 11,15 | 2,54 |
2 | RC401-0361 | Cradle support hook with ® Ø 51 x 390 mm RITZGLAS® | 4,50 | 9,92 |
RC401-0362 | Cradle support hook with ® Ø 51 x 810 mm RITZGLAS® | 5,70 | 12,55 | |
3 | FLV03460-1 | Cradle metal spacer | 2,60 | 5,73 |
4 | RC401-0455 | Insulator plate | 3,15 | 6,95 |
5 | RE402-0138 | Ø 64 mm clamp for rod | 0,80 | 1,75 |
6 | FLV18595-1 | Ø 64 X 4830 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 8,80 | 19,40 |
FLV18595-2 | Ø 64 X 3890 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 7,45 | 16,42 | |
FLV18595-3 | Ø 64 X 2675 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 5,40 | 11,90 | |
7 | FLV18594-1 | Ø 38 X 4835 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 4,50 | 9,92 |
FLV18594-2 | Ø 38 X 3920 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 3,60 | 7,94 | |
FLV18594-3 | Ø 38 X 2705 mm (insulated) RITZGLAS® tube with plastic terminal and eye head | 2,60 | 5,75 | |
8 | FLV18593-1 | Ø 38 X 4874 mm RITZGLAS® tube with plastic terminal | 3,90 | 8,60 |
FLV18593-2 | Ø 38 X 3954 mm RITZGLAS® tube with plastic terminal | 2,95 | 6,50 | |
FLV18593-3 | Ø 38 X 2734 mm RITZGLAS® tube with plastic terminal | 2,20 | 4,85 | |
9 | FLV03457-2 | Ø 38 x 349 mm (insulated length) RITZGLAS® pole with tie-down head (clevis type) and eye head | 2,15 | 4,74 |
FLV03457-3 | Ø 38 x 806 mm (insulated length) RITZGLAS® pole with tie-down head (clevis type) and eye head | 2,50 | 5,52 | |
FLV03457-5 | Ø 38 x 1263 mm (insulated length) RITZGLAS® pole with tie-down head (clevis type) and eye head | 2,85 | 6,28 | |
FLV03457-6 | Ø 38 x 1416 mm (insulated length) RITZGLAS® pole with tie-down head (clevis type) and eye head | 3,00 | 6,61 |