Aerodynamic Suspension Disc Insulator

The Aerodynamic Suspension Disc Insulator from Weixiao is a high-performance glass insulator engineered for modern power transmission networks. Designed with aerodynamic principles, this insulator reduces wind-induced vibration and minimizes mechanical stress on transmission lines, ensuring reliability and longevity. As a trusted aerodynamic suspension disc insulatorsupplier, Weixiao combines advanced material technology with precision manufacturing to deliver products that meet the stringent demands of high-voltage power systems.

Aerodynamic Suspension Disc Insulator Specification

The specifications of toughened glass suspension insulator of Open Air Profile
Model No	Mechanical Failing load ≥	Nominal Spacing Height	Nominal Diameter	Min Nominal Creepage distance	Connection type	Individual Tensile Load test	Dry lightning impulse withstand voltage	Impulse Puncture Withsta nd voltage	Power Frequency Voltage ≥			Radio interference voltage	Corona extinction voltage pin/cap	Power frequency orc test	Net weight Per unit
Model No	Mechanical Failing load ≥	mm			Connection type	Individual Tensile Load test	Dry lightning impulse withstand voltage	Impulse Puncture Withsta nd voltage	Power frequency dry withstand voltage	with- stand voltage (1min)	puncture	Radio interference voltage	Corona extinction voltage pin/cap	Power frequency orc test	Net weight Per unit
U70BP/146M	70	146	380	365	16	35	90	2.8	55	50	130	≤50	18/22	0.12s/20kA	5.3
U100BP/146M	100	146	380	365	16	50	90	2.8	55	50	130	≤50	18/22	0.12s/20kA	5.3
U120BP/146M	120	146	380	365	16	60	90	2.8	55	50	130	≤50	18/22	0.12s/20kA	5.3
U160BP/155M	160	155	420	380	20	80	95	2.8	60	55	130	≤50	18/22	0.12s/20kA	7.9
U160BP/170M	160	170	420	380	20	80	95	2.8	60	55	130	≤50	18/22	0.12s/20kA	8.1
U210BP/170M	210	170	420	380	20	105	95	2.8	60	55	130	≤50	18/22	0.12s/20kA	8.1
U240BP/170M	240	170	420	380	24	120	95	2.8	60	55	130	≤50	18/22	0.12s/20kA	8.3
U300BP/195M	300	195	450	450	24	150	95	2.8	60	55	130	≤50	18/22	0.12s/20kA	10.5

Aerodynamic Suspension Disc Insulator Core Structural Features

Tempered glass disc — Large-diameter umbrella (380mm for 146M/155M series, 420–450mm for higher-load models) with a curved, edgeless lower profile. No sharp ribs or grooves that could trap sand or droppings.
Steel cap — Hot-dip galvanized for corrosion resistance; ball-socket connection type (M pattern) for compatibility with standard hardware fittings.
Steel foot (pin) — Matched to the cap socket; provides the mechanical load transfer path within the string.
Cement bonding layer — Locks the glass disc to the cap and foot assembly; retains the glass's thermal stress pre-load which enables the self-breaking detection mechanism.

Aerodynamic Suspension Disc Insulator Advantages

Reduced wind resistance — The aerodynamic profile lowers the drag coefficient compared to standard open-type discs, directly reducing the mechanical load transferred to tower structures in high-wind events.
Passive self-cleaning — The smooth, edgeless underside allows rain and wind to flush contaminants from the disc surface without manual intervention, preserving leakage path integrity between maintenance cycles.
Bird dropping protection — The wide umbrella acts as a physical shield; a single unit placed at the top of a string provides coverage for the units below.
Ground-detectable degradation — Thermally pre-stressed glass shatters visibly when a unit loses electrical integrity — maintenance crews can identify failed units from the ground, eliminating routine pole-climbing insulation tests.
Ice bridging resistance — The smooth curved profile and absence of horizontal ribs reduce the likelihood of ice forming continuous bridges between discs.

Aerodynamic Suspension Disc Insulator Application Scenarios

Application Scenario	Why This Type Is Used
Typhoon and strong wind zones	Streamlined disc reduces wind pressure load and line vibration fatigue
Desert and Gobi areas	Smooth underside resists sand and dust accumulation; rain and wind self-clean effectively
High bird activity corridors	Large umbrella diameter shields string from droppings; typically deployed at string top
Large-span river or valley crossings	Lower aerodynamic drag reduces oscillation sensitivity in long spans
High-altitude UV-exposed routes	Tempered glass construction resists UV degradation without aging loss

Selection and Operation and Maintenance Points of Aerodynamic Suspension Disc Insulator

1) Selection Principles

Select the rated breaking load based on the mechanical load of the line (e.g., 70/100/120/160kN).
Prioritize light to moderate pollution areas; in heavily polluted areas, it is recommended to use in combination with pollution-resistant types or select composite umbrella types.
In strong wind areas, prioritize models with a suitable structural height and lower wind resistance coefficient (e.g., 127mm structural height).

2) Operation and Maintenance Suggestions

Inspection Cycle: Every 6-12 months in plains and rural areas, and every 3-6 months in strong wind and sandstorm areas.
Key Inspection Points: Umbrella disk cracks, rust on steel caps and feet, and self-breaking pieces, and replace them in a timely manner.
Auxiliary Protection: In areas with high bird activity, add one piece of this type of insulator at the top of the string and install bird spikes.

Aerodynamic Suspension Disc Insulator Working Principle

1. Streamlined aerodynamic profile
The large-diameter umbrella disc features a curved, edgeless lower surface that allows air to flow smoothly around the insulator rather than creating turbulent resistance. This reduces wind pressure and minimizes the transmission of wind-induced vibration to the conductor and tower.

2. Extended leakage path with optimized geometry
While maintaining a lower creepage distance compared to anti-pollution types, the disc shape ensures that contaminants do not accumulate on critical surfaces. Wind and rain effectively clear the smooth underside, preserving insulation integrity.

3. Zero-value self-breakage detection
The tempered glass component is manufactured under controlled thermal stress. If a unit becomes electrically degraded, internal stress causes it to shatter visibly—a feature that enables maintenance crews to identify faulty units from the ground without specialized testing equipment.

Quality Control

Stage	Measure
Incoming material	Glass components, steel caps, and pins inspected against certified specifications before production entry
In-process control	Real-time monitoring of glass batching, tempering temperature curves, and cement curing
Batch testing	Each production batch undergoes mechanical load testing, electrical withstand testing, and thermal shock verification
Certification compliance	ISO 9001:2015, ISO 14001:2015, ISO 45001:2018; full compliance with IEC standards and China 3C certification
Traceability	Complete batch traceability from raw material receipt through to final shipment documentation

Aerodynamic Suspension Disc Insulator Supplier Advantages | Weixiao

Production capacity — Monthly output reaches 2,100 tons, equivalent to approximately 400,000 tempered glass insulator units per month, supporting large EPC project timelines without supply interruption.
Customization — Model dimensions, mechanical ratings, connection type, and surface markings can be adapted to project-specific requirements; customer logo incorporation available.
Complete string solutions — Supply covers insulators and matching hardware, allowing buyers to source full string assemblies from a single vendor rather than coordinating across multiple suppliers.
Certifications on file — ISO quality, environmental, and occupational safety certifications plus Green Certification covering supply chain and manufacturing practices — documentation readily available for project qualification.
Technical support — Selection guidance available for matching model choice to line mechanical load, pollution level, and regional wind conditions; inquiry response through direct contact channels.

FAQ

What makes the aerodynamic insulator different from standard types?
Its streamlined, large-diameter umbrella disc reduces wind resistance and vibration, while the smooth lower surface improves self-cleaning—ideal for strong wind, sandstorm, and high bird activity areas.

What mechanical strength options are available?
Models range from 70kN to 300kN failing load, covering most transmission line requirements.

How often should these insulators be inspected?
Every 6–12 months in normal areas; every 3–6 months in strong wind or sandstorm regions.

Can they be used in heavily polluted environments?
They perform best in light to moderate pollution. For heavy industrial or coastal salt spray areas, combine with anti-pollution types in the same string.

How are they packaged for shipment?
Wooden crates with bamboo mat separators to prevent damage during transit. Custom packaging available upon request.