

U120BP/127M UHV AC 120kN Aerodynamic Toughened Glass Insulators
Supply of aerodynamic type toughened glass insulators for 220 kV and 60kV lines, Standard 16 A FOURNITURE DE ISOLATEURS EN VERRE TREMPE TYPE AERODYNAMIQUE POUR LIGNES 220 KV ET 60 KV NORME 16A high voltage suspension 120 kN open air profile type toughened glass insulator U120BP/127M glass insulators 120kN Aerodynamic Glass Insulator U120B
- Type codeU120BP/1 27 M
- Mechanical failing load120 kN
- Routine test load60 kN
- Nominal diameter D380 mm
- Unit spacing H127 mm
- Creepage distance L350 mm
- Coupling size16 mm
- Net weight per unit5.6 kg
Made by Jiangxi Huayao Electric Co., Ltd. in Luxi County, Jiangxi, China. Third-party inspection by Intertek, BV or SGS welcome.
What This Type Is For
120kN open air profile disc suspension glass insulator U120BP/127M
On desert and high wind routes, deposits sit in a deep shed and never wash off. An open profile lets the wind do the cleaning and sheds ice more readily.
What You Get With This Unit
Rated strength
Specified mechanical failing load of 120 kN, routine tested at 60 kN.
Creepage per unit
350 mm of leakage path in a single unit, so string creepage can be budgeted without guesswork.
Coupling
16 mm ball and socket coupling to match existing line hardware.
Shipping weight
5.6 kg net per unit, which sets crate weight and freight cost for the string.
Material
Toughened glass shell with hot-dip galvanised cap and pin, cemented and cured.
Traceability
Routine tensile load test on every piece, with the process record kept against the production batch.
Main Technical Parameters
The full parameter table this type belongs to, copied from our factory data. The highlighted row is this item.
| Type | Diameter D (mm) | spacing H (mm) | creepage distance L(mm) | size of coupling (mm) | Mechnical failing load (kN) | Mechnical routine test (kN) | Power frequency withstand voltage DRY (kV) | Power frequency withstand voltage WET (kV) | lighting impulse withstand voltage (kV) | Min power frequency puncture voltage (kV) | Net weight per unit (kg) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| U70BP/146M | 380 | 146 | 365 | 16 | 70 | 35 | 55 | 45 | 90 | 130 | 5.3 |
| U100BP/146M | 380 | 146 | 365 | 16 | 100 | 50 | 55 | 45 | 90 | 130 | 5.3 |
| U120BP/146 M | 380 | 146 | 365 | 16 | 120 | 60 | 55 | 45 | 90 | 130 | 5.4 |
| U120BP/1 27 M | 380 | 127 | 350 | 16 | 120 | 60 | 60 | 50 | 90 | 130 | 5.6 |
| U160BP/146M-1 | 380 | 146 | 350 | 20 | 160 | 80 | 60 | 50 | 95 | 130 | 7.0 |
| U160BP/146M-2 | 420 | 146 | 380 | 20 | 160 | 80 | 60 | 50 | 95 | 130 | 7.2 |
| U160BP/155M | 420 | 155 | 380 | 20 | 160 | 80 | 60 | 50 | 95 | 130 | 7.8 |
| U210BP/170M | 420 | 170 | 380 | 20 | 210 | 105 | 60 | 50 | 95 | 130 | 7.3 |
| U240BP/170M | 420 | 170 | 380 | 24 | 240 | 120 | 60 | 50 | 95 | 130 | 7.5 |

Dimensions On One Sheet
The factory dimensional drawing shows shed profile, unit spacing, creepage path and the coupling detail. PDF drawings for the common types are on the downloads page, and a drawing for this type can be issued before you place an order.
Export Projects On Record
U120BP/127M Questions
Straight answers to the questions buyers ask before a first order.
What is the mechanical failing load of U120BP/127M?
The specified mechanical failing load is 120 kN, and the routine test load is 60 kN.
How much creepage distance does this unit give me?
One unit gives 350 mm of creepage distance at 127 mm unit spacing. Multiply by the number of units in the string and compare the total against the mm per kV your pollution class requires.
Which coupling size does it use?
The ball and socket coupling is 16 mm. Confirm this against the fittings already specified for the project so the string assembles without adapters.
Which standards does this toughened glass insulator follow?
Designs follow GB, ANSI, BS, DIN, AS and IEC dimensions. Type test reports are available from Xi'an High Voltage Apparatus Research Institute Co., Ltd. and the National Ceramic Product Quality Inspection and Testing Center.
Can I have the goods inspected before shipment?
Yes. Buyers are welcome to inspect in person, and Huayao accepts third-party pre-shipment inspection appointed by the buyer, including Intertek, BV and SGS.
What is the production capacity behind this item?
The plant runs one natural-gas electric melting kiln with a melting area of about 50 m² and two production lines, with an annual capacity of six million pieces of AC and DC glass insulators. Stock is held on common types.
Other Types In This Family

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U160BP/146M 400kV AC 160kN Air-dynamic Disc Suspension Glass Insulator
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U160BP/155M 160kN Aerodynamic Toughened Glass Insulator
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U70BP/146M 70kN Aerodynamic Toughened Glass Suspension Insulator
View specifications →Quote U120BP/127M
Send the quantity, the coupling size already specified and your destination port. We will come back with price, lead time and crate weights.




