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Line Fittings | CGU Reinforced (Heavy-duty) Suspension Clamp for Large-section Conductors

Line Fittings | CGU Reinforced Suspension Clamp is an overhead line fitting used to support bare conductors at the suspension towers and poles of power distribution and transmission lines. It is a reinforced suspension clamp with a longer and deeper trough, thick side ribs, three or more U-bolts and a strengthened twin-strap hanger, designed for large-section conductors, long spans and heavy mechanical loads. The CGU series is the heavy-duty version of the XGU clamp. The longer trough reduces the bearing pressure on the conductor and the extra U-bolts increase the slip load, so the clamp can hold large ACSR conductors, long crossing spans and lines in heavy ice or strong wind areas without conductor damage. The body and keeper are hot-dip galvanized cast steel with reinforcing ribs; the hanger uses twin straps and a thick pivot pin and connects to the insulator string through ball-eye, socket-clevis or U-clevis fittings. YAOGU supplies it together with cable clamps, cable lugs, terminal blocks and the complete range of high and low voltage switchgear as a one-stop power equipment solution.

Industry Approvals：
GB/T 2314
IEC 61284


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Model:
CGU

Parameter	Line Fittings
Common Models	CGU
Construction	Hot-dip galvanized cast steel clamp body with long deep trough, thick reinforcing side ribs and flared bell-mouth ends; long heavy keeper plate held by three or more U-bolts with hex nuts, flat washers and lock washers. Strengthened twin hanger straps with thick pivot pin and cotter pin; hanger connects to the insulator string through ball-eye, socket-clevis or U-clevis fittings sized for the increased load.
Core Function & Performance	Supports large-section or heavily loaded conductors at the suspension tower and transfers their vertical, transverse and unbalanced longitudinal loads to the insulator string; the long trough and additional U-bolts give a higher slip load and lower bearing pressure so that the conductor is held securely under heavy ice, wind and long-span conditions.
Technical Specs & Ratings	• Applicable line voltage: 10 kV to 500 kV overhead lines (by clamp type) • Standards: GB/T 2314, IEC 61284 • Main components: Reinforced clamp body (trough), heavy keeper plate, three or more U-bolts, hex nuts, washers, twin hanger straps, pivot pin, cotter pin • Applicable conductor diameter range, rated failure load, slip load and dimensions: configured according to the conductor specification and span loads, please contact us.
Typical Application Scenarios	Suspension points of 110 kV to 500 kV transmission lines with large-section ACSR conductors, long river and valley crossing spans, heavy icing and strong wind regions, mountainous lines with large elevation differences.

*Data provided on this page is subject to change based on different manufacturers' variances.

Customization Service

We provide flexible customization services, including conductor diameter range and rated load, number of U-bolts, with or without armour rods, hanger type, galvanizing thickness, packaging. Custom marking options include nameplates, logos and project-specific identification to meet traceability and branding requirements.

Q	What is the CGU suspension clamp?
A	CGU Reinforced Suspension Clamp is an overhead line fitting that supports bare conductors at suspension towers and poles. It is a reinforced suspension clamp with a longer and deeper trough, thick side ribs, three or more U-bolts and a strengthened twin-strap hanger, designed for large-section conductors, long spans and heavy mechanical loads. The CGU series is the heavy-duty version of the XGU clamp. The longer trough reduces the bearing pressure on the conductor and the extra U-bolts increase the slip load, so the clamp can hold large ACSR conductors, long crossing spans and lines in heavy ice or strong wind areas without conductor damage. The body and keeper are hot-dip galvanized cast steel with reinforcing ribs; the hanger uses twin straps and a thick pivot pin and connects to the insulator string through ball-eye, socket-clevis or U-clevis fittings.
Q	Which standards does this suspension clamp comply with?
A	The clamp is designed and tested to GB/T 2314 (general technical specifications for electric power fittings) and IEC 61284 (overhead lines - requirements and tests for fittings), including mechanical failure load, slip load and hot-dip galvanizing requirements. Type test reports can be provided on request.
Q	What is the difference between XGU, XGF and CGU suspension clamps?
A	XGU is the standard fixed type suspension clamp for distribution and transmission lines. XGF is the corona-proof type with a smooth, fully rounded aluminium alloy body and shielded hardware for high voltage lines where corona discharge and radio interference must be limited. CGU is the reinforced type with a longer, deeper trough, additional U-bolts and a stronger hanger for large-section or heavy conductors, long spans and heavy ice or wind loads.
Q	When should a CGU reinforced clamp be selected instead of a standard XGU clamp?
A	Select the CGU clamp when the conductor section is large, the span is long (for example river or valley crossings), the design ice thickness or wind pressure is high, or the line runs through mountainous terrain with large elevation differences. In these cases the standard clamp slip load or bearing pressure may be exceeded; the longer trough and additional U-bolts of the CGU clamp provide the required margin.
Q	How do I select the correct clamp size?
A	The clamp is selected by the conductor type and outer diameter (for example ACSR 240/30), the required rated failure load and whether armour rods are used. Please send the conductor specification and line voltage; we will recommend the matching clamp grade and hanger fittings.
Q	Where is this suspension clamp typically used?
A	Suspension points of 110 kV to 500 kV transmission lines with large-section ACSR conductors, long river and valley crossing spans, heavy icing and strong wind regions, mountainous lines with large elevation differences.
Q	What information do you need for a quotation?
A	Please provide the conductor type and diameter, line voltage, required rated load, hanger connection type (ball-eye, socket-clevis or U-clevis), quantity and delivery destination. We will confirm the clamp grade and quote accordingly.
Q	Do you supply complementary products?
A	Yes. In addition to high and low voltage switchgear, we supply power cables, cable accessories, electric power fittings and transformers for complete project packages.

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Line Fittings | CGU Reinforced (Heavy-duty) Suspension Clamp for Large-section Conductors

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