specimas - Компанія "Монада"

Slipring Columns

Manufactured by Specimas

2

Cavotec is the name of a group ofcompanies specialized in power supplytechnology for cranes and otherindustrial equipment. It is formed by6 manufacturing companies located inCanada, Germany, Italy, Sweden andUK, and by 18 Cavotec salescompanies which, together with anetwork of Distributors, serve morethan 30 countries in five continents.Each manufacturing company, nomatter where it is located, aims atbeing a market leader in its field byproviding innovative and reliableproducts to Group customers.Although they manufacture differentproducts in different countries, theyare globally supported andcoordinated by the Cavotec Group intheir product development andmarketing activities.Each sales company, and eachdistributor, has a policy aiming atbetter serving its local market withthe full support of the Cavotec Group.

Our aim isto be local everywhereGreat emphasis is put in providing thehighest quality not only in theselected products, but also in serviceand backing to their customers. Ourphilosophy in fact is to be localeverywhere.

The Cavotec Group Cavotec Sales CompaniesThe products manufactured bySpecimas described in the followingpages, as well as other quality productsin the field of crane and powertechnology, are distributed around theworld by the Cavotec sales companiesand by a network of selected Groupdistributors.

SpecimasSlipring Columns

Our fieldsof activity are

Robots,Automation

Offshore

Constructions

Mining,tunnelling

Steel Mills

Forestry

Ports,Terminals

This brochure gives examplesonly of standard solutions ofslipring columns. For moredetailed information contactyour nearest Cavotec salescompany or Specimas.

3

50°

100°

150°

200°

T(°C)

I(Amp)

100

200

300

400

Time(Hour)

0 1 2 3 4 5

90°

Specimas slipring columns are renownfor quality, innovative design andoutstanding reliability.Thousands of units have beeninstalled in the late 35 years in allparts of the world, in all types ofharsh industrial environments.

Field of applicationApplications include dockside cranes,ships, mobile cranes, pedestal cranes,access platforms, turntables and a widevariety of mechanical handlingequipment.

Main advantages:1. Reliability

The outstanding reliability ofSpecimas slipring columns is due tomany innovative technicalsolutions backed by years ofexperience in this specialised field.

2. Resistance to corrosionThe extensive use of stainless steelfor all mechanical parts, from theframe down to the fixings,guarantees an excellent mechanicalresistance even in particularyhostile climates and environments,without maintenance.

3. FlexibilityA unique characteristic of theslipring columns is the possibilityto meet almost any requirementsby using a wide range of componentsespecially developed andmanufactured by Specimas.

4. CompactnessThe special design of the Specimasrings enable the construction ofvery compact sections, stillensuring a high degree of electricalinsulation and a perfect contact.

5. Wiring facilitiesAll side panels on the Specimasslipring column can easily beremoved thus providing good accessfor wiring to rings and brushgear.The signal rings are, as standard,prewired to a numbered terminalblock.

KP BrushStand still slipring applications oftenrequire a high degree of derating of theamperage carrying capacity ofconventional carbon brushgear.Increasing the physical size of thebrushes is not always a solution, sincethe actual contact area does notincrease proportionally. Specimas hasovercome this(problem by developing amulticontact brushgear which has

Continuous current 300 Amp Temperature Conventional brush Temperature Kp-brush

The Slipring Columns

KP-brushConventionalcarbon brush

effectively doubled the capacity. Thisis achieved by dividing the brush intoindependent sections, thus ensuringan increased effective contact area.The diagram shows a comparisonbetween a conventional brushgear(BG) and a multi-contact brushgear(KP) of the same physical sizecarrying 300 Amp continuous.

A Specimas slipringdated 1965.

A Specimasslipringdated 1999.

4

KK 135max ring diameter 135mmmax current up to 400A

This type is normally used for craneswith a nominal current handlingcapacity of up to 400 Amp. All powerand signal rings with a diametr of 135mm are prewired to a commonterminal block. Nominal voltage forsignals 600 V and for power 1000 V.Ring formation is normally dividedinto 3 sections for power, auxiliaryand signals.

Slipring columns are available in openversion or closed with stainless steelside panels. (IP44 or on request IP55).The strong base bearing, with a 125 mmcentre passage, makes it also possibleto mount the column upside down.

1

10

7

5

4

9

8

2

3

6

1 Pedestal base bearing2 Inside frame work3 Stainless steel panels4 Cover5 Doors6 Power ring pack (400A)7 Auxiliary power ring pack (240, 120A)8 Control ring pack (60, 30A)9 Options, see page 1310 Terminals

5

Technical characteristics of KK 135

Rated voltage: 1000 V AC/600 V AC (control rings)

Test voltage: 3000 V AC/2000 V AC

Brushgear: multi-contact copper/graphite brushes

Rings: brass rings with V-shaped grooves

Wiring: all rings pre-wired onto terminal block

Insulation matl: makrolon/glass-fibre

Cable glands: available on request for mounting on side panels/top cover

Construction: modular design with independent sections for power/control

Bearing: heavy duty base ball bearing with large cable passage

Housing: side panels and doors in stainless steel sheet as standard

Protection: IP44 type BC – IP55 type BD optional

Accessories: self-regulating heating element available on request

Nr. of Nominal Continuous Nr. & dia Max. cable Nr.& type Max. cablepoles 60% ED 100% ED of ring section of brushes section

(Amp) (Amp) (mm) (mm2) (mm2)Slipring rotating

30 S (silverplated) 12 1 x 130 (1) 1 x 2,5 1 x Kp2 1 x 2,530 12 1 x 130 1 x 2,5 1 x Kp2 1 x 2,560 25 1 x 130 1 x 10 1 x Kp3 1 x 10

120/240 60/120 1 x 130 1 x 25 1 x Kp4/Kp8 1 x 25400 200 1 x 135 1 x 70 1 x Kp12 1 x 70

Format Current rating Rings BrushgearSection Height (mm)

Pitch x Nr poles + K = Subtotal

B (2) 7.5 xB (2) 7.5 xB (3) 15 x + 80=B (3) 15 xA (4) 33 x

Housing

For eachsectionadd 80

Weight* kg Housing dimensions* (std) H1 H2 H3 H4

Bearing 14 Base mm 400x400 400x400 400x400Housing Height mm 830 1080 1330Sliprings Weight kg 32 40 48

TotalA + B + 380 =Housing top clearance (C) = 60Height calculated H =

Specimas slipring assembly type:SilverControlAux. powerPowerEarthVersion

KK 135

Notes:(1) silver plated with screened cable

(connection of screen to be specified)(2 max. 36 poles/section;(3) max. 12 poles/section;(4) max. 7 poles;Use additional sections if required* Subject to confirmation

H

rings Special

rings x 30A

rings x 60A

rings x 120A

rings x 240A

rings x 400A

52

ø250ø125

365

32 72

ø290

400

==

400 ==

285

75

==

ø30

465

6


The strong base bearing, with a 180mm centre passage, makes it alsopossible to mount the columns upsidedown.Cable entry to brushes can be fittedto side panels or top cover.

A series of larger slipring columns fordockside cranes with a maximumnominal amperage of 2400 Amp andvoltage up to 1000V. The power sectionconsists of 270 mm diameter ringswhich are wired directly on the ring.The 130 mm diameter signal andauxiliary rings are prewired to aseparate terminal block.Slipring columns are available in openversion or closed with stainless steelside panels. (IP44 or on request IP55).

4

1

3

5

2

10

9

7

11

6

8

1 Pedestal base bearing2 Inside frame work3 Stainless steel panels4 Cover5 Doors6 Power ring pack (600 to 2400A)7 Auxiliary power ring pack (400A)8 Auxiliary power ring pack (240, 120A)9 Control ring pack (60, 30A)10 Options, see page 1311 Terminals

7



Test voltage: 3000 V AC/2000 V AC



Wiring: control/aux. power rings pre-wired onto terminal block


Cable glands: available on request for mounting on side panels/top cover




Protection: IP44 type CC – IP55 type CD optional


Weight* kg Housing dimensions* (std) H1 H2 H3 H4

Bearing 25 Base mm 400x600 400x600 400x600Housing Height mm 1130 1380 1630Sliprings Weight kg 60 70 80

TotalA + B + C + 460 =Housing top clearance (C) = 60Height calculated H =


KK 270

Format Current rating Rings Brushgear Housing

+ 80 =

+ 80 =




120/240 60/120 1 x 130 1 x 25 1 x Kp4/Kp8 1 x 25400 200 1 x 135 1 x 70 1 x Kp12 1 x 70600 300 1 x 270 2 x 150 1 x Kp20 2 x 1501200 600 1 x 270 (5) 2 x 150 2 x Kp20 2 x 1502400 1200 2 x 270 (5) 4 x 150 4 x Kp20 4 x 150

C (2) 7.5 xC (2) 7.5 xB (3) 15 xB (3) 15 xB (4) 33 xA 50 xA 50 xA 85 x

Section Height (mm)Pitch x Nr poles + K = Subtotal


(connection of screen to be specified)(2) max. 36 poles/section;(3) max. 12 poles/section;(4) max. 7 poles;(5) earth= one ring size smallerUse additional sections if required* Subject to confirmation** Optional location of driving arm

H

106

ø250ø176

560

83

rings x 2400A

rings x 1200A

rings x 600A

rings x 120A

rings x 60Arings x 30Arings Special

rings x 400Arings x 240A

ø290

129

455

400

==

==

330

20 ø35

95

390

600

**

**

8


Slipring KK450 is the largest sizeavailable in the KK series. Max.current rating is 4800 A. The largediameter of power rings and ballbearing base offer an ample passagefor power cables.The construction is similar to KK135and KK270 sliprings, that is withstainless steel removable side panlesand doors in IP44 version, or IP55 on

request, with a reinforced internalframe.Optional cable inlet box may beprovided fitted on side panel.Auxiliary and control rings areassembled as a modular assemblyand prewired to terminal blocks.

4

1

3

6

5

2

10

9

12

11

13

8

7

1 Pedestal base bearing2 Inside frame work3 Stainless steel panels4 Cover5 Doors6 Power ring pack (600 to 4800A)7 Auxiliary power ring pack (400A)8 Auxiliary power ring pack (240, 120A)9 Control ring pack (60, 30A)10 Options, see page 1311 Frame type cable entry12 Terminals13 Optional cable inlet box

9



Test voltage: 3000 V AC/ 2000 V AC



Wiring: control/aux. power rings pre-wired onto terminal block


Cable glands: available on request for mounting on side panels/cable inlet box




Protection: IP44 type CC – IP55 type CD optional



(connection of screen to be specified);(2) max. 36 poles/section;(3) max. 12 poles/section;(4) max. 7 poles;(5) earth= one ring size smaller* Subject to confirmation** Optional location of driving armUse additional sections if required

Weight* kg Housing dimensions* (std) HBearing 25 Base (To check dimension ask Specimas) mm 700 x 900Housing Height (To check dimension ask Specimas) mmSliprings Weight Kg

TotalA + B + C + 460 =Housing top clearance (C) = 60Height calculated H =


KK 450

Format Current rating Rings Brushgear Housing

+ 80 =

+ 80 =

C (2) 7.5 xC (2) 7.5 xB (3) 15 xB (3) 15 xB 33 xA 50 xA 50 xA 50 xA 50 xA 85 xA 85 x




120/240 60/120 1 x 130 1 x 25 1 x Kp4/Kp8 1 x 25400 200 1 x 135 1 x 70 1 x Kp12 1 x 70600 300 1 x 450 2 x 185 1 x Kp20/2 x BG450 2 x 150

1200 600 1 x 450 (5) 2 x 185 2 x Kp20/4 x BG450 2 x 1851800 900 1 x 450 (5) 3 x 185 3 x Kp20 3 x 1852400 1200 2 x 450 (5) 4 x 185 4 x Kp20 4 x 1853600 1800 2 x 450 (5) 6 x 185 6 x Kp20 6 x 1854800 2400 2 x 450 (5) 8 x 185 8 x Kp20 8 x 185

Section Height (mm)Pitch x Nr poles + K = Subtotal

H

rings x 60Arings x 30Arings Special

rings x 400Arings x 120Arings x 120A

rings x 600A

rings x 1200A

rings x 1800A

rings x 2400A

2 rings x 3600A

2 rings x 4800A

ø510ø480ø304

900

96128

95

20

35

745

380900

520

700

500

470

**

**

10

Dimensions of rings and brushes.

ø130

260

R50

R38

R100

255

ø130

260

R50

R38

R100

255

ø130

260

R50

R38

R100

125

ø130

260

R50

R38

R100

125

ø137

,5

260

R50

R33

155

30A, max 600V – Ø 130mmBrush KP2 (also silver plated)p= 7,5mms= 3mm

60A, max 600V – Ø 130mmBrush KP3p= 15mms= 10mm



400A, max 1000V – Ø 137,5mmBrush KP12p=35mms= 5mmh= 20mm

The following drawings show theavailable ring kits from nominalamperage rating of 30A to 4800A.Control rings (30A) plus auxiliarypower rings up to 400A, are built inmodular assemblies by means of 3 insu-lated studs. The single kit consists ofone ring with an insulator spacer andone brush with its insulator. The brushesare fixed to two insulated tie-rods. Thecomplete package is guided by means ofspecial ball bearings which support thepackage and guide the rotating assembly.The special ball bearing can also besupplied with push on terminals for thesignal rings.Power rings may be provided with morethan one brush connected together withcopper busbars, in order to increase theallowable amperage rating. Main dimen-sions are given in the drawings. Ring kitsfrom 30A up to 400A can be used in allslipring box sizes. Power rings d= 270mmfrom 600A up to 2400 A are used in slipringsize KK270. Power rings d= 450mm from600A up to 4800A can be fit only insidethe slipring size KK450.

11

R 308

ø 45

0

ø 360

R 2

00

324

R 308ø

450

ø 360

R 2

00

600

300327

R 308ø

450

ø 360

R 2

00

600

300327

600A, max 1000V – Ø 450mmBrush KP20p=50mms= 5mmh= 30mm


4800A, max 1000V – Ø 450mmN° 2 rings of 2400ABrush 4 x KP20 each ringp=85mms= 5mmh= 30mm

ø270

R110R90

380

425

2400A, max 1000V – Ø 270mmN° 2 rings of 1200ABrush 2 x KP20 each ringp=85mms= 5mmh= 30mm

ø270

R110R90

380

425

1200A, max 1000V – Ø 270mmBrush 2 x KP20p=50mms= 5mmh= 30mm

ø270

R110R90

380

210


Note: p= ring pitch • s= fixing lug thichness • h= ring total heightp

h

s

12

Notes to brush/ring data:(1) If sliprings operate in standstill for long periods: refer to Specimas.

(2) Brushes are always mounted on 2 studs at 120° angle, ring pitch= 7.5 mm, brush pitch= 15 mm

(3) Normally mounted quantity ( )= option for special applications

(4) Silver plated ring with copper graphite or silver–graphite brush

(5) Resistence from cable entry to cable exit

(6) Pressure of each brush arm

(7) Ring material is brass

(8) Brush arm is phosphor bronze

(9) Also available 2400 A: two rings in parallel

(10) Also available 3600 A and 4800 A: two rings in parallel 1800 A and two rings in parallel 2400 A

Rings and brushes data

Ring type Ø 130/30 130/30s 160/30 270/30 130/60 130/120 130/240 135/400 270/600 270/1200 450/600 450/1200 450/1800 450/2400

Nominal Amp. A 30 30 30 30 60 120 240 400 600 1200 600 1200 1800 2400

Amp. 100% ED A 12 12 12 12 25 60 120 200 300 600 300 600 900 1200

Kp2 Kp2 Kp2/160 Kp2/270 Kp3 Kp4 Kp8 Kp12 Kp20/270 2 x Kp20 Kp20/450 2 x Kp20 3 x Kp20 4 x Kp20

Kp2/silver

1(2) 1 1(2) 1(3) 1 1 1 1 1 2 1 2 3 4

Cable size mm2 2,5 2,5 2,5 6 10 25 35 70 2x150 2x150 2x150 2x185 3x185 4x185

Resistance (5) mOhm <40±10 <5±0,5 <40±10 <40±10 <10±2 <1,5±1 <1,5±1 <1,5±1 <1±1 <1±1

Mech. life revs. >50E6 >25E6 >40E6 >20E6 >2E6 >2E6 >2E6 >2E6 >2E6 >2E6

Brush press. (6) N 3 3 3 3 3 8 8 9,5-7 10-6 10-6

Torque Ncm 20 20 20 20 40 150 175 200 750 1500 1250 2500 3750 5000

Ring section (7) mm2 13,7 13,9 12,2 108 49,2 48 48 130 262 312

Brush arm section (8) mm2 6,28 6,28 6,28 6,28 18,84 28,2 56,4 84,8 140 140

Brush carbon size 16x12x2 16x12x2 16x12x2 16x12x2 16x12x2 25x15x3 25x15x3 25x15x3 25x15x3 25x15x3

12x10x2

No. of carbons 2 2 2 2 6 4 8 12 20 20

(9) (10)(4)(2) (2) (2)

(1)

Brush holderassembly type

No. of brushholder ass’y (3)

13

Optional equipment for type KK135, KK 270, KK450

The modular design of slipring makesit suitable to combine with optionaldevices as specified by the client.

Extra devices are generally mercurywetted signal sliprings such asMercotac or gold plated signal slipringcapsules such as Aurotac (refer to thespecific catalogues) or swivels for air,water and oil.

In some cases it is possible to combineslipring columns with fiber opticrotary joints.

An encoder is mounted on the ring assemblytop and driven by means of an elastic joint.

A pneumatic swivel – the tube is insertedinside the ring assembly.

A signal slipring capsule Mercotac or Aurotacis arranged on top of the ring assembly.

An ex-proof slipring is fit on the slipringhousing cover and driven by a stainless steeltube which is also the ex-proof collector cableconduit. Designed for easy maintenance.

Oil, swivel (designed by Specimas according toclient specifications) is fitted below theslipring and becomes also base bearing.

Encoder Pneumatic swivel

Mercotac/Aurotac Ex-proof slipring

Hydraulic swivel

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Medium voltage Slipring

Medium voltage slipring are alsoavailable (3kV up to 10kV).Medium voltage section is segregatedfrom the control section which is arrangedon the top inside a separated enclosure.A stainless steel tube through the me-dium voltage section, safeguards thecontrol cables.Rings and brushes are the same compo-nents as used in the low voltagesliprings, but the pitch is suitable forthe operating voltage: resin cast mediumvoltage insulators are used in the as-sembly.

A medium voltage slipring with three phase ringsplus earth, assembled by means of insulators suitablefor 6 kV operating voltage.

ø250ø290600

13812

H

15

Slipring Columns with central hollow passage

The lower part of the picture shows the power ringswith copper bars which connect the brushes. In theupper section 28 control ring are arranged. Both ringsand brushes may be prewired to junction boxes ( seeabove illustration). A slewing ring allows an accurateand silent movement. Central passage diameter,enclosure height and other main dimensions may bedesigned on request to meet customer requirements.

DescriptionThe slipring column is a single assem-bly built on a robust base-bearing. Thering column is connected to the innerring of this base-bearing whilst thebrushgear assembly is mounted on a in-ternal structure bolted to a base platefixed onto the outer ring of the base-bearing. The housing is built with acentral hollow passage as required byclient. A lateral door is supplied for ac-cess to rings and brushes. Cabling ismade on both sides indesignated terminal boxes. Optionalclient specified components can bemounted in the connection boxes if spaceis available.

InstallationThe slipring assembly is designed to beinstalled in a vertical position.The housing, supporting the brushgearassembly, is provided with a driving-forkwhich drives the rotating part of theslipring through a non-rigid system, inorder to compensate for possible mount-ing misalignments between slipringand containing structure. It is impor-tant therefore to maintain this flexibil-ity also in case a different driving sys-tem is adopted.

H2:

770

/920

H1:

100

0/12

00/1

350

øD1: 750

øD2: 1160

ø720 n°16 M12

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High power Slipring Columns and special applications

Specimas special sliprings for highpower applications are at work insevere environmental conditions allover the world: in nuclear plants, steelplants and offshore applications.The design is customized according tothe extreme performances requiredsuch as resistance to high vibrations,high temperature, corrosiveatmosphere, etc.Ring diameters over 2000 mm withhigh amperages and incorporatedswivels for air, water or oil.Also auxiliary power sliprings, signalsliprings with silver or gold platingand fibre optic transmission are someof the high technology features thatcan be combined with these highpower slipring units.Approval tests have been carried outby several certification companies suchas DNV, Bureau Veritas, GermanischeLloyd.

Specimas custom-built slipring column for phasecurrents over 3000 Amps.

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The range of sliprings distribuited bythe Cavotec sales companies includesnot only the sliprings columnsmanufactured by Specimas andillustrated in this catalogues, but alsothe Alfo sliprings with a range up to150A, the Mercotac and the Aurotacconnectors.

Alfo GSK-unitsCompact modular design and 2 mainranges up to 150 A. High-strengthIP65 GRP boxes. Multi-layer silver-rhodium rings/brushes transfer deli-cate mA control signals reliably, withhigh sensitivity and low noise level.Max voltage 690V. These strong andreliable units are used in numerousdifferent automation applications,waste-water processing units, lifts etc.

Other Cavotec Sliprings

Aurotac connectorsMain features are: goldplated contactsurfaces, small size and strong construc-tion that stands up to a demandingenvironment. The reliable contactscan transfer extremely sensitivedigital and analog signals as well asRS/RF connections and up to 25 Ampspower. As well as being excellent forapplications where there is no roomfor larger units, they can also be mountedas an extension on Specimas and Alfosliprings to handle the most demand-ing signals.

Mercotac connectorsMercotac combines mercury with com-patible metals to form highly reliablerotating electrical connections for up to8 channels with low resistence and ca-pacitance. They are ideal for transmit-ting signal and control circuits, in ap-plications where high revolutions perminute, low (electrical) noise, and lowresistance prohibit the use of conventionalsliprings. Durable, compact, mainte-nance free ball bearing construction.

Fiber optic rotary accumulators(GFO)Specimas has developed a fibre opticrotary accumulator of heavy-dutydesign for rugged environment. Thesystem can also be used as a stand–alone rotary accumulator. The signaltransmission is uninterrupted: the onlylosses are due to the fibres andconnectors themselves. This unit issupplied with a limited number ofrevolutions (40 or 80).

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Standard K-type Sliprings

Specimas standard K-range slipringswhich as standard are used on allSpecimas cable reels, can frequentlyalso be used, with a support bearing orhydraulic swivel, as a stand–alonevertical slipring assembly.

(1) These collectors are also available with a 5th. power ring: K512 - K524 - K540 - K560(2) These collectors can be supplied with a pilot ring 30Amp. - /1

A

CB

Standard K-type sliprings LOW VOLTAGESlipring Nominal Continuous Nominal Max cable Ring Type of n° of Weight Housing

type rating rating Tension section dia brushgear brushgear dimensionA A V mm2 mm Kg A x B x C

K12 30 12 600 1 x 2,5 130 Kp2 1 9 242 x 370 x 242K24 30 12 600 1 x 2,5 130 Kp2 1 14 271 x 456 x 359K37 30 12 600 1 x 2,5 130 Kp2 1 16 275 x 456 x 461K48 30 12 600 1 x 2,5 130 Kp2 1 22 275 x 456 x 625K406 60 25 600 1 x 10 130 Kp3 1 8 242 x 370 x 242K412 (1) (2) 120 60 600 1 x 25 130 Kp4 1 8 242 x 370 x 242K412/4 120/30 60/12 600 1 x 25/1 x 2,5 130/130 Kp4/Kp2 1 9 242 x 370 x 242K424 (1) (2) 240 120 600 1 x2,5 130 Kp8 1 9 242 x 370 x 242K440 (1) (2) 400 200 1000 1 x 70 135 Kp12 1 12 272 x 456 x 272K440/4 400/30 200/12 1000 1 x 70/1 x 2,5 135/130 Kp12/Kp2 1 14 271 x 456 x 359K450 (1) (2) 500 250 1000 1 x 120 170 Kp20 1 15 289 x 538 x 499K460 (1) (2) 600 300 1000 1 x 150 270 Kp20 1 35 382 x 642 x 377K4120 (2) 1200 600 1000 2 x 150 270 Kp20 2 40 382 x 642 x 377K4121 (2) 1200 600 1000 2 x 150 270 Kp20 2 45 487 x 788 x 480K4240 (2) 2400 1200 1000 4 x 185 270 Kp20 4 70 500 x 788 x 776

836

270

ø35

620

65 20

108

382

185

70

9244

8

125ø 250 N + 3 holes ø 24

ø 290

322

370

ø270

ø240

35

242

242

14,5

285

27,5

541,

5

2015

ø13

ø13

ø30ø160ø190

Slipring KS 460 Slipring K12/B3 x 1”

Examples:

19

Applications

Slipring unitsfor marine applicationsTwo heave compensated cranes aremounted on the deck of this StenaSeawell multipurpose vesseldesigned for a variety of subseaoperations.With a total power of 2240 HPensuring a lifting capacity of 150tons, they can operate eitherindependentely, or in a twin modeautomatically syncronized.Mounted inside the revolving towerthere is a set of 3 Specimas slipringunits. The one at the base suppliesthe electrical power and controls,the other two, one for each crane,provide both electrical andhydraulic connections. Reliabilityis vital in this slipring application.

Slipring unitsfor applications requiringcustomized designA Specimas custom-built slipringcolumn – phase current over 3000Amps – is at work on a floating grabcrane. The crane unloads coal at theFrans Swartouw terminal, Port ofRotterdam. On top of the power ringsthere are more than 80 silver coatedcontrol rings used for the transfer ofsignals monitoring the ballast of thefloating crane.

specimas - Компанія "Монада"

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