A wind turbine cable cleat specification should do more than name a clamp type. It must connect the cable schedule, short-circuit duty, support spacing, mounting detail and environment so the supplier can quote a cleat that fits the route and the project approval process.
Wind-energy clamp hub → Matched product page → Related procurement guide: SS316 Trefoil Cable Cleat for Offshore Wind Projects / Related procurement guide: SS316 vs Aluminum Trefoil Cable Cleats: Which One to Specify? / Related procurement guide: How to Specify Trefoil Cable Cleats for Wind Turbine Towers / Related procurement guide: Wind Turbine Cable Cleat RFQ Template: What Buyers Should Include / Related procurement guide: Cable Cleat Spacing in Wind Turbine Towers: Practical Design Notes / Related procurement guide: Wind Turbine Cable Cleat Inspection Checklist: What to Check During Maintenance / Related procurement guide: How to Read an IEC 61914 Cable Cleat Test Report for Wind Projects / Related procurement guide: Cable OD and Bundle Size: What Buyers Must Send for Trefoil Cleats
Specify wind turbine cable cleats by cable OD, trefoil or single-core layout, IEC 61914 short-circuit duty, support spacing, tower or offshore zone, mounting interface, material, liner, fastener grade and required project documents.
- Best for
- Procurement, electrical and project teams preparing cable-cleat specifications for tower, nacelle, transition-piece or offshore wind cable routes.
- Not suitable for
- Buying a generic cleat by catalogue appearance without fault-current, spacing and mounting data.
- Selection steps
- 1 — Cable schedule -> 2 — electrical duty -> 3 — support spacing -> 4 — mounting detail -> 5 — material and documents
- RFQ information
- Cable OD, layout, kA peak/RMS, spacing, zone, mounting rail or plate, material, liner, fasteners, quantity, certificates
§ 01 Start from the cable schedule
The cable schedule should provide outside diameter, cable type, voltage level, route and quantity. For single-core power cables, state whether the route uses trefoil formation, flat formation or a mixed layout. This is the starting point before choosing SS316, aluminum or another cleat body.
§ 02 Define the IEC 61914 duty
Cable cleats restrain short-circuit forces, so IEC 61914 duty should be stated before price comparison. Give peak current, RMS current, duration and the assumed spacing. If the values are preliminary, mark them as design assumptions and ask the supplier to confirm the effect on cleat selection.
§ 03 Connect spacing with the route
Spacing is not only a catalogue value. Vertical tower runs, nacelle exits, transition-piece routes and J-tube areas see different loads and maintenance access. Use the tower cable cleat spacing guide to turn the route into a practical support plan before release.
§ 04 Specify the mounting interface
A correctly sized cleat can still be wrong if the rail, plate, bracket or hole pattern is missing. Include rail width, plate thickness, bolt size, hole pitch, access direction and whether the fasteners must be A4 stainless or isolated from dissimilar metals.
§ 05 Choose material by environment
SS316 or 316L is usually specified for offshore towers, transition pieces and chloride-exposed routes. Aluminum trefoil cleats can be a lighter option for tower-internal or onshore routes when corrosion exposure is moderate and galvanic isolation is controlled.
§ 06 Ask for approval documents early
The specification should ask for drawings, material statements, fastener grade, liner material, inspection reports and any IEC 61914 test or design basis. This prevents the common problem where a low-price quote cannot pass incoming inspection or project documentation review.
| RFQ field | Why it matters |
|---|---|
| Cable OD / bundle size | Controls the cleat body size and liner fit. |
| Short-circuit current | Defines IEC 61914 restraint duty. |
| Support spacing | Changes force per cleat and installation quantity. |
| Environment | Drives SS316, aluminum, fastener and liner choices. |
| Documents | Prevents rework during project approval and incoming inspection. |
Evidence and decision boundary
- Direct evidence
- IEC 61914 defines cable-cleat requirements and tests. ISO 3506-1, ISO 9227 and ISO 12944-9 have narrower material, test or coating scopes and do not replace a cleat test report.
- Engineering inference
- A specification should connect cable geometry and fault duty to cleat spacing, mounting, environment, materials, documents, change control and acceptance criteria. Each requirement needs an identified evidence type.
- Typical or indicative value
- Example clauses and values are drafting aids, not mandatory IEC values or confirmed Weique ratings.
Primary sources checked
- IEC 61914:2021 - cable-cleat requirements and tests
- ISO 3506-1:2020 - stainless fastener grades and property classes
- ISO 9227:2022 - salt-spray test methods and limits
- ISO 12944-9:2018 - offshore protective paint systems for carbon-steel structures
Related commercial route: Compare wind-turbine clamp systems and RFQ inputs.