Power Grid UHV DC 550kN U550BP Stain-resistant Disc Suspension Electrical Glass Insulator
U550BP 550kN Fog Type Stain-Resistant Toughened Glass Suspension Insulator, IEC Standard Ultra High Strength Disc Insulator U550BP Stain Resistant Glass Insulator | 550kN Heavy Load Anti-Pollution Suspension Insulator 550kN U550BP Ultra Heavy-Duty Fog Type Toughened Glass Insulator, Long Creepage Pollution Resistant Insulator for 500kV &
- Type codeU550BP/240
- Mechanical failing load550 kN
- Routine test load275 kN
- Nominal diameter D380 mm
- Unit spacing H240 mm
- Creepage distance L650 mm
- Coupling size32 mm
- Net weight per unit20.50 kg
- Materialfiberglass
- Applicationhigh voltage
- Rated voltage33kV
- UsageTransmission lines
- CertificateISO9001
- StandardIEC60383
- ColorJade green
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
550kN stain-resistant disc suspension glass insulator U550BP
Glass Standard Profile Suspension Insulators LXP-550 / U550B
Coastal salt fog, cement dust and chemical fallout bridge a standard shed and cause flashover. A deeper fog profile buys creepage distance where washing is impractical.
What You Get With This Unit
Rated strength
Specified mechanical failing load of 550 kN, routine tested at 275 kN.
Creepage per unit
650 mm of leakage path in a single unit, so string creepage can be budgeted without guesswork.
Coupling
32 mm ball and socket coupling to match existing line hardware.
Shipping weight
20.50 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.
| IEC 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/146 | 260 | 146 | 400 | 16 | 70 | 35 | 80 | 45 | 110 | 130 | 5.00 |
| U70BLP/146 | 280 | 146 | 450 | 16 | 70 | 35 | 85 | 50 | 125 | 130 | 5.50 |
| U70BP/146 | 320 | 146 | 550 | 16 | 70 | 35 | 90 | 55 | 140 | 130 | 7.50 |
| U100BLP/146 | 260 | 146 | 400 | 16 | 100 | 50 | 80 | 45 | 110 | 130 | 5.00 |
| U100BLP/146 | 280 | 146 | 450 | 16 | 100 | 50 | 85 | 50 | 125 | 130 | 5.50 |
| U100BP/146 | 320 | 146 | 550 | 16 | 100 | 50 | 90 | 55 | 140 | 130 | 7.50 |
| U120BLP/146 | 260 | 146 | 400 | 16 | 120 | 60 | 80 | 45 | 110 | 130 | 5.00 |
| U120BP/146 | 280 | 146 | 450 | 16 | 120 | 60 | 85 | 50 | 125 | 130 | 5.50 |
| U120BP/146 | 320 | 146 | 550 | 16 | 120 | 60 | 90 | 55 | 140 | 130 | 7.50 |
| U160BSP/155 | 280 | 155 | 450 | 20 | 160 | 80 | 85 | 50 | 125 | 130 | 7.00 |
| U160BP/170 | 280 | 170 | 450 | 20 | 160 | 80 | 85 | 50 | 125 | 130 | 7.20 |
| U160BLP/170 | 320 | 170 | 550 | 20 | 160 | 80 | 90 | 55 | 140 | 130 | 9.20 |
| U160BP/155 | 320 | 155 | 550 | 20 | 160 | 80 | 90 | 55 | 140 | 130 | 9.00 |
| U160BSP/146 | 320 | 146 | 550 | 20 | 160 | 80 | 90 | 55 | 140 | 130 | 8.80 |
| U210BP/170 | 320 | 170 | 550 | 20 | 210 | 105 | 90 | 55 | 140 | 130 | 10.00 |
| U240BP/170 | 320 | 170 | 550 | 24 | 240 | 120 | 90 | 55 | 140 | 130 | 10.50 |
| U240BP/170 | 320 | 170 | 550 | 20 | 240 | 120 | 90 | 55 | 140 | 130 | 10.50 |
| U300BP/195 | 390 | 195 | 710 | 24 | 300 | 150 | 95 | 60 | 150 | 130 | 14.00 |
| U300BP/195 | 380 | 195 | 635 | 24 | 300 | 150 | 95 | 60 | 150 | 130 | 14.00 |
| U420BP/205 | 380 | 205 | 620 | 28 | 420 | 210 | 90 | 55 | 140 | 130 | 16.50 |
| U550BP/240 | 380 | 240 | 650 | 32 | 550 | 275 | 95 | 55 | 145 | 130 | 20.50 |
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
U550BP/240 Questions
Straight answers to the questions buyers ask before a first order.
What is the mechanical failing load of U550BP/240?
The specified mechanical failing load is 550 kN, and the routine test load is 275 kN.
How much creepage distance does this unit give me?
One unit gives 650 mm of creepage distance at 240 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 32 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
PSD70E 70kN EMS Anti Fog Type Corrosion Proof Disc Insulator Glass Type
View specifications →
PSV160A 160kN EMS Anti Fog Type Corrosion Proof Disc Insulator Glass Type
View specifications →
PSV120B 120kN EMS Anti Fog Type Corrosion Proof Disc Insulator Glass Type
View specifications →PSD70E 70kN EMS Anti Fog Type Corrosion Proof Disc Insulator Glass Type Type TYPE
View specifications →Quote U550BP/240
Send the quantity, the coupling size already specified and your destination port. We will come back with price, lead time and crate weights.