Composite insulator product type

Composite Insulators for Line, Post, Suspension and Bushing Interfaces

Q: What data is needed for a composite insulator RFQ?

Send the selected insulator type, voltage class, creepage distance, mechanical load, fitting or flange interface, dimension requirement, quantity and destination standard.

Q: Where are composite insulators used in distribution systems?

They are used for line support, suspension strings, conductor pass-through points, transformer tank interfaces, wall bushings, silicone-rubber material needs and accessory hardware packages.

Q: How do engineers choose between pin, post, suspension and bushing interfaces?

Start from the installation interface and mechanical duty. Pin and post units support conductors or equipment, suspension units carry tensile string duty, and bushings pass a conductor through wall or tank insulation.

Q: When are composite insulator drawings needed?

Use drawings when mounting holes, wall openings, flange dimensions, end fittings, tank interface or fixed length must be confirmed before production.

Q: Can suspension SML ratings be used for post insulators?

No. Suspension SML data describes tensile string duty. Post insulator support needs cantilever, bending and flange data from the matching model row or project sheet.

Q: Do composite insulator fittings set the electrical rating?

No. Fittings confirm hardware fit and mechanical connection. Electrical class, creepage distance, current and insulation duty must come from the selected insulator or bushing data.

Compare composite crossarm, horizontal line, pin, post, suspension, transformer bushing, wall bushing, CT-integrated bushing, porcelain bushing, HTV silicone rubber compound and accessory interfaces by installation interface, rating boundary and dimension requirement.

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Products/Distribution Switching Equipment/Composite Insulators

Product types

Composite Insulator Types

Start with the installation interface, then compare the matching option by insulation duty, mechanical load, fitting interface and dimension requirement.

CI 01Crossarm

Composite Crossarm Insulator

Composite crossarm insulator interface for insulated overhead crossarms where the square core, silicone housing, end fittings and interface load must be confirmed together.

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CI 02Horizontal line

33kV Horizontal Line Composite Insulator

33 kV horizontal line composite insulator interface for line post or horizontal support duty on overhead feeder structures.

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CI 03Pin interface

Composite Pin Insulator

Composite pin insulator interface for 12-33 kV pin interface selection where spindle thread, shed profile and pollution duty decide the final model.

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CI 04Post interface

Composite Post Insulator

Composite post insulator interface for station post or equipment support duty where cantilever and bending duty are more important than suspension tensile rows.

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CI 05Suspension

Composite Suspension Insulator

Composite suspension insulator interface for overhead line tension and suspension strings where FXB and FXBW rows separate voltage, SML and creepage requirements.

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CI 06Transformer bushing

Dry Resin Impregnated Transformer Bushing

RIP transformer bushing interface for transformer tank interface duty where oil side, air side, conductor and flange data must be released as a matched set.

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CI 07Dry wall bushing

Dry Resin Impregnated Wall Bushing

FCRG wall bushing interface for indoor and outdoor wall interface selection with dry capacitive insulation and silicone-rubber outer sheds.

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CI 08Wall bushing with CT

Dry Composite Wall Bushing with Current Transformer

Dry composite wall bushing with current transformer interface where the conductor interface and CT secondary winding must be confirmed as separate electrical functions.

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CI 09Dry porcelain

Dry Porcelain Wall Bushing

Dry porcelain wall bushing interface for capacitive main insulation with porcelain coat where porcelain construction must not be mixed with silicone-rubber wall bushing rows.

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CI 10Porcelain wall

Porcelain Wall Bushing

CWW wall bushing interface for porcelain wall interface selection where project conditions decide whether pure porcelain or dry capacitive construction is required.

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Composite insulator fittings and end hardware on clean white background

CI 11Accessories

Composite Insulator Accessories

Composite insulator accessories interface for fittings and end hardware selection after the main insulator interface is already known.

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HTV silicone rubber compound rolls for composite insulator housing and shed material

CI 12HTV compound

HTV Silicone Rubber for Composite Insulators

HTV silicone rubber compound option for composite insulator sheds, housings, insulation sheath and spacer material where hydrophobicity, tracking resistance, dielectric data and molding process must be confirmed.

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Composite Crossarm Insulator selection rows

Parameter group	Listed value	Selection note
Selection option	Composite crossarm insulator	Insulated crossarm interface
Model row	34 x 54 mm square crossarm body appears in the technical PDF	Confirm final drawing before production
Mechanical row	SCL >=6.0 kN; STL >=10 kN; STM >=1.0 kN m	Use only for crossarm interface
Insulation row	dry arc distance >=390 mm; creepage distance >=510 mm	Confirm project voltage and pollution duty
Core rod material	water absorption <=0.05%; Barcol hardness 65-75 HBa; dye penetration >=15 min	Use for crossarm material check
Core rod strength	tensile strength >=1100 MPa; bending strength >=900 MPa; in-plane shear >=35 MPa	Do not transfer to fitting load
Core rod electrical	volume resistivity >=1.0e10 ohm m at 140 C; breakdown strength >=30 kV/cm	Confirm insulation level by project voltage
Housing material	elongation at break >=270%; tensile strength >=4.7 MPa; tear strength >=12 kN/m	Silicone rubber housing material
Housing surface	tracking and erosion resistance >=TMA4.5; flame class FV-0; minimum housing thickness >=5 mm	Use for outdoor pollution fit
Standards and fittings	JB/T8178, JB/T9677, GB/T1001.1, GB/T11352-2009 and GB/T2314-2008 are listed around fittings and tests	Confirm project standard before order
Drawing row	Request an outline drawing when fixed hole pattern or mounting dimensions matter	Request before fixed-dimension release

33kV Horizontal Line Composite Insulator selection rows

Selection field	Available rating data	Selection note
Selection option	33 kV horizontal line composite insulator	Horizontal line support interface
Application point	Line post or horizontal support	Confirm pole arm arrangement
Rating data	Project sheet required for exact creepage and cantilever value	Do not infer from image similarity
Drawing row	Request outline drawing when fixed dimensions matter	Request before fixed-dimension release

Composite Pin Insulator selection rows

Selection field	Available rating data	Selection note
Selection option	Composite pin insulator	Pin support interface
Application point	Pole-top or crossarm pin position	Confirm spindle interface
Rating data	Project sheet required for voltage and creepage	Do not reuse post rows
Drawing row	Request outline drawing when fixed dimensions matter	Request before fixed-dimension release

Composite Post Insulator selection rows

Selection field	Available rating data	Selection note
Selection option	Composite post insulator	Support interface
Application point	Station post or equipment support	Confirm structure position
Rating data	Project sheet required for cantilever and creepage value	Keep separate from suspension interface
Drawing row	Request outline drawing when fixed dimensions matter	Request before fixed-dimension release

Composite Suspension Insulator selection rows

Model	Rated voltage / SML	Length and creepage	Withstand voltage
FXB1-10/40	10 kV / 40 kN	H 291 mm; L 155 mm; creepage 340 mm	LIWV 135 kV; PF dry/wet 66/60 kV
FXB1-10/70	10 kV / 70 kN	H 325 mm; L 155 mm; creepage 340 mm	LIWV 135 kV; PF dry/wet 66/60 kV
FXB2-10/40	10 kV / 40 kN	H 301 mm; L 165 mm; creepage 440 mm	LIWV 141 kV; PF dry/wet 70/60 kV
FXB2-10/70	10 kV / 70 kN	H 346 mm; L 190 mm; creepage 535 mm	LIWV 147 kV; PF dry/wet 78/60 kV
FXB2-10/100	10 kV / 100 kN	H 346 mm; L 190 mm; creepage 535 mm	LIWV 147 kV; PF dry/wet 78/60 kV
FXBW1-10/40	10 kV / 40 kN	H 342 mm; L 196 mm; creepage 600 mm	LIWV 125 kV; PF dry/wet 100/60 kV
FXBW1-10/70	10 kV / 70 kN	H 370 mm; L 196 mm; creepage 600 mm	LIWV 125 kV; PF dry/wet 100/60 kV
FXBW1-10/100	10 kV / 100 kN	H 402 mm; L 196 mm; creepage 600 mm	LIWV 125 kV; PF dry/wet 100/60 kV
FXBW1-10/120	10 kV / 120 kN	H 412 mm; L 196 mm; creepage 600 mm	LIWV 125 kV; PF dry/wet 100/60 kV
FXBW1-20/70	20 kV / 70 kN	H 422 mm; L 300 mm; creepage 750 mm	LIWV 187 kV; PF dry/wet 121/108 kV
FXBW1-20/100	20 kV / 100 kN	H 442 mm; L 300 mm; creepage 750 mm	LIWV 187 kV; PF dry/wet 121/108 kV
FXBW1-22/120	20 kV / 120 kN	H 454 mm; L 300 mm; creepage 750 mm	LIWV 187 kV; PF dry/wet 98/70 kV
FXB1-24/70	24 kV / 70 kN	H 450 mm; L 292 mm; creepage 604 mm	LIWV 180 kV; PF dry/wet 120/96 kV
FXB2-24/70	24 kV / 70 kN	H 465 mm; L 292 mm; creepage 847 mm	LIWV 170 kV; PF dry/wet 120/90 kV
FXB2-24/100	24 kV / 100 kN	H 500 mm; L 292 mm; creepage 847 mm	LIWV 170 kV; PF dry/wet 120/90 kV
FXB1-33/70	33 kV / 70 kN	H 570 mm; L 416 mm; creepage 912 mm	LIWV 294 kV; PF dry/wet 99/76 kV
FXB1-33/100	33 kV / 70 kN	H 600 mm; L 416 mm; creepage 912 mm	LIWV 294 kV; PF dry/wet 99/76 kV
FXB2-33/70	33 kV / 70 kN	H 570 mm; L 434 mm; creepage 1154 mm	LIWV 200 kV; PF dry/wet 90/70 kV
FXB2-33/100	33 kV / 100 kN	H 600 mm; L 434 mm; creepage 1154 mm	LIWV 200 kV; PF dry/wet 90/70 kV
FXBW2-35/70	35 kV / 70 kN	H 620 mm; L 464 mm; creepage 1115 mm	LIWV 230 kV; PF dry/wet 150/130 kV
FXBW2-35/100	35 kV / 100 kN	H 660 mm; L 464 mm; creepage 1115 mm	LIWV 230 kV; PF dry/wet 150/130 kV
FXBW2-35/120	35 kV / 120 kN	H 680 mm; L 464 mm; creepage 1115 mm	LIWV 230 kV; PF dry/wet 150/130 kV
FXBW2-66/100	66 kV / 100 kN	H 880 mm; L 709 mm; creepage 1970 mm	LIWV 400 kV; PF dry/wet 240/140 kV
FXBW2-66/120	66 kV / 120 kN	H 990 mm; L 770 mm; creepage 1970 mm	LIWV 410 kV; PF dry/wet 210/185 kV
FXBW3-110/70	110 kV / 70 kN	H 1220 mm; L 1099 mm; creepage 3518 mm	LIWV 550 kV; PF dry/wet 290/230 kV
FXBW3-110/100	110 kV / 100 kN	H 1240 mm; L 1099 mm; creepage 3518 mm	LIWV 550 kV; PF dry/wet 290/230 kV
FXBW3-110/120	110 kV / 120 kN	H 1260 mm; L 1099 mm; creepage 3518 mm	LIWV 550 kV; PF dry/wet 290/230 kV
FXBW3-132/100	132 kV / 100 kN	H 1440 mm; L 1294 mm; creepage 4109 mm	LIWV 550 kV; PF dry/wet 320/290 kV
FXBW3-132/120	132 kV / 120 kN	H 1460 mm; L 1294 mm; creepage 4109 mm	LIWV 550 kV; PF dry/wet 320/290 kV
FXBW3-220/100	220 kV / 100 kN	H 2150 mm; L 2000 mm; creepage 6572 mm	LIWV 1000 kV; PF dry/wet 540/495 kV
FXBW3-220/120	220 kV / 120 kN	H 2170 mm; L 2000 mm; creepage 6572 mm	LIWV 1000 kV; PF dry/wet 540/495 kV

Dry Resin Impregnated Transformer Bushing selection rows

Selection field	Available rating data	Selection note
Selection option	Dry resin impregnated transformer bushing	Transformer interface
Application point	Transformer tank interface	Confirm tank and terminal data
Standard row	IEC 60137; GB/T 4109	Confirm destination standard
Environmental temperature	-40 C to +55 C	Transformer bushing interface
Rated voltage	12-363 kV	Confirm model and BIL before order
Rated current	10-31500 A	Nameplate and order sheet must match
Structure row	air side, oil side, flange, conductor rod, silicone sheds or porcelain coat, test terminal and winding tube	Use only for transformer bushing interface
Drawing row	Request outline drawing when fixed tank interface dimensions matter	Request before fixed-dimension release

Dry Resin Impregnated Wall Bushing selection rows

Selection field	Available rating data	Selection note
Selection option	Dry resin impregnated wall bushing	Dry wall interface
Application point	Indoor and outdoor wall interface	Confirm wall opening
Standard row	IEC 60137; GB/T 4109	Confirm project standard
Environmental temperature	-40 C to +55 C	Dry composite wall bushing interface
Rated voltage	12-363 kV	Confirm model before order
Rated current	10-8000 A	Confirm conductor and terminal interface
Structure row	capacitive main insulation, conductor, flange, end screen tap, terminal blocks and silicone-rubber sheds	Use for wall interface selection
Wall-bushing reference examples	FCRG 40.5 kV, 72.5 kV, 126 kV, 145 kV and 252 kV examples are shown with 100A to 5000A case labels	Use only as reference examples before model confirmation
Drawing row	Request outline drawing when fixed wall opening or flange dimensions matter	Request before fixed-dimension release

Dry Composite Wall Bushing with Current Transformer selection rows

Selection field	Available rating data	Selection note
Selection option	Dry composite wall bushing with current transformer	CT-integrated bushing interface
Application point	Through-wall conductor plus CT function	Confirm protection or metering need
Environmental temperature	-50 C to +55 C	CT-integrated interface
Rated voltage	12-40.5 kV listed for the CT wall-bushing introduction	Confirm if higher-voltage model labels are requested
Rated current	10-8000 A	Confirm conductor and CT package
Wall-bushing reference examples	FCRG-L 12 kV 6000A, 40.5 kV 1600A, 126 kV 2000A and LRB 110 kV split current transformer examples	Confirm CT ratio, class and burden separately
Structure row	terminal block, gusset plate, equalizing ball, silicone-rubber sheds, conductor, capacitive main insulation, shell, secondary winding and secondary terminal	Keep CT data separate
Drawing row	Request outline drawing when fixed CT cabinet or wall dimensions matter	Request before fixed-dimension release

Dry Porcelain Wall Bushing selection rows

Selection field	Available rating data	Selection note
Selection option	Dry porcelain wall bushing	Dry porcelain interface
Application point	Wall bushing with porcelain coat	Confirm indoor and outdoor side
Standard row	IEC 60137; GB/T 4109	Confirm project standard
Environmental temperature	-40 C to +55 C	Dry porcelain interface
Rated voltage	12-363 kV type range	Confirm model before order
Rated current	10-8000 A type range	Confirm conductor interface
Structure row	capacitive main insulation, conductor, flange, porcelain coat and terminal blocks	Do not mix with silicone-rubber wall interface
Drawing row	Request outline drawing when fixed wall opening or flange dimensions matter	Request before fixed-dimension release

Porcelain Wall Bushing selection rows

Selection field	Available rating data	Selection note
Selection option	Porcelain wall bushing	Pure porcelain interface
Application point	Wall bushing interface	Confirm construction type
Standard row	IEC 60137; GB/T 4109	Confirm destination standard
Environmental temperature	-50 C to +55 C	Porcelain wall interface
Rated voltage	12-40.5 kV	Confirm exact CWW model
Rated current	10-8000 A	Confirm conductor and terminal interface
Structure row	porcelain sleeve, conductor, intermediate flange, end cover and terminal block	Keep separate from dry capacitive interfaces
Drawing row	Request outline drawing when fixed wall opening or flange dimensions matter	Request before fixed-dimension release

Composite Insulator Accessories selection rows

Selection field	Available rating data	Selection note
Selection option	Composite insulator accessories	Accessory interface only
Application point	End hardware and fittings	Use after main interface is selected
Rating data	Mechanical and interface data required from project sheet	No electrical rating inheritance
Drawing row	Request outline drawing when fixed hardware dimensions matter	Request before fixed-dimension release

HTV Silicone Rubber for Composite Insulators selection rows

Selection field	Available rating data	Selection note
Selection option	HTV silicone rubber for composite insulators	Material interface for composite insulation parts
TDS grade codes	NK-2101, NK2102 and NK2105	Select one grade before production or purchase
Application point	Composite insulators, composite surge arresters, insulation sheath and insulation spacers	Confirm molding process and final component use
Compound and process	methyl vinyl mixed silicone rubber; 160-170 C for 10 minutes in XIYA order condition; clamping or injection molding in TDS	Confirm molding interface and cure condition
Density	NK-2101: 1.50 +/-0.03 g/cm3; NK2102: 1.50 +/-0.03 g/cm3; NK2105: 1.45 +/-0.03 g/cm3; XIYA order condition <=1.6 g/cm3	Confirm requested grade before production
Hardness	NK-2101: Shore A 60 +/-3; NK2102: Shore A 60 +/-3; NK2105: Shore A 65 +/-3; XIYA order condition Shore A 60	Confirm hardness with color and form
Mechanical properties	tensile strength >=4.0/4.5/4.5 MPa; elongation >=250/300/350%; tear strength >=12/13/14 kN/m; permanent deformation <=2.0%	Use the requested grade row
Volume resistivity	>=1 x 10^15 / >=3 x 10^15 / >=5.0 x 10^15 ohm.cm by TDS grade; XIYA order condition lists 10^11	Confirm certificate basis and unit before release
Dielectric constant and loss	dielectric constant 3-4; dielectric loss factor <=0.03 / <=0.002 / <=0.002	Use with dielectric strength row
Dielectric strength	TDS >=18/21/23 kV/mm; XIYA order condition AC 20 kV/mm and DC 30 kV/mm	Confirm AC/DC test basis with order sheet
Surface and safety	TMA4.5 tracking and erosion resistance with depth of erosion <=2.5 mm; AC/A 4.5; HC1 hydrophobicity; UL94 V-0 or FV-0 flame class	Use for outdoor insulation material review
Molding and bonding behavior	good flow ability, mold release, short curing time, easy molding and firm bonding with core rod and metal fittings	Confirm with production process
Packaging and storage	20 kg carton; cool dry storage below 25 C; six-month validity listed in TDS	Confirm shipment quantity and shelf-life need

Application fit

Composite Insulator Applications

The first question is not model number. It is where the insulator sits: overhead line support, suspension string, wall pass-through, transformer tank interface, silicone-rubber material use or hardware package.

System position

The installation interface decides which insulator type can be selected.

Separate conductor support, tensile string duty, conductor pass-through and hardware fit before comparing model rows.

Engineering topology image showing composite insulators on pole line substation wall bushing and transformer routes

Line support

Crossarm, horizontal line, pin and post positions

Use these interfaces when the conductor support interface and mechanical load decide the interface.

Suspension string

FXB and FXBW tensile interface

Use this interface when SML, end fitting and string duty define the order boundary.

Bushing interface

Transformer, dry wall, porcelain and CT-integrated interfaces

Start from the bushing interface: FCRG dry composite wall, CCRG ceramic wall, FCRG-L CT wall and RIF transformer bushing interfaces need separate wall, tank, flange and conductor checks.

Accessory package

End hardware after selection option selection

Use accessories only after the main insulator type and interface load are known.

Material grade

HTV silicone rubber compound before molding or purchase

Use the silicone rubber compound interface when grade code, color, hardness, tensile strength, hydrophobicity, tracking class and packaging need to be confirmed as material data.

Selection matrix

Composite Insulator Selection Matrix

Choose the product option by interface duty first, then keep each rating row inside the matching option.

Decision interface

Interface duty

Selection boundary

Crossarm interfaceInsulated crossarm support on overhead pole

Core section, end fitting and attached equipment

Confirm bending load, hole pattern and creepage distance

Line-support interface33 kV horizontal, pin or post insulator

Conductor support, bracket interface or station support

Confirm voltage, creepage and mechanical support duty

Suspension interfaceFXB and FXBW suspension insulator type

Tension or suspension string on overhead line

Confirm SML, end fitting, voltage and dimension requirement

Bushing interfaceTransformer, dry composite wall, porcelain wall or CT-integrated bushing

Conductor interface through wall, tank or equipment interface

Confirm IEC 60137 or GB/T 4109 basis, voltage, current, flange, wall thickness and CT data if used

Accessory interfaceFittings and end hardware

Hardware selected after main insulator interface

Confirm load, hole size, finish and matched insulator type

Material interfaceHTV silicone rubber for composite-insulator sheds, housings and insulation parts

Material grade selected before molding or purchase

Confirm grade code, color, hardness, tensile and tear target, volume resistivity, dielectric strength, hydrophobicity, tracking class and packaging

Working principle

Composite Insulator Construction

Composite insulator selection depends on load duty and insulation duty: fiberglass core or capacitive insulation, silicone housing or porcelain coat, metal fitting or flange, and the conductor or support interface.

Engineering structure image showing core rod silicone sheds end fittings conductor path and bushing interface

Structure checks before release

Confirm which part of the assembly carries load and which part defines insulation duty.

Core or capacitive insulationLine insulators use a rod/core interface; bushings use a conductor-through-insulation interface.

Housing and shedsSilicone rubber, porcelain coat and shed profile determine creepage and environmental fit.

End fitting or flangeHardware must match tensile, cantilever, wall, tank or conductor interface duty.

Electrical boundaryVoltage, current, BIL, creepage and CT data stay with the matching selection option.

Rating boundary

Composite Insulator Ratings

Do not reuse one product type’s values for another option. Each product option separates listed values from order-sheet checks.

Line support

Crossarm, pin, post and horizontal line rows stay separate.

Support load, bracket interface and creepage data decide which line-support row applies.

Bushing interface

Transformer, wall and CT-integrated bushing values cannot be merged.

FCRG, CCRG, FCRG-L and RIF interfaces need separate voltage, current, flange, wall or tank interface and conductor data.

Crossarm and line supportMechanical support first

Crossarm, pin, post and horizontal line interfaces depend on load, bracket and creepage rows.

Suspension interfaceSML and end fitting first

FXB and FXBW rows apply to tensile string duty and include the available Drawing view.

Bushing interfaceVoltage, current and flange first

Dry composite wall, ceramic wall, CT-integrated wall and RIF transformer bushings require their own conductor, flange, wall/tank and insulation data.

Accessory and material interfaceNo electrical rating inheritance

Fittings follow the selected insulator type; HTV silicone rubber compound confirms material properties and does not set system voltage class.

Drawing and data

Composite Insulator Drawings

Use rating tables for listed values, product images for type identity, and drawing views only where dimensions support mounting, wall opening, flange or fitting checks.

Wall bushing insulator product group on clean white background — Wall bushing reference rows support bushing-interface checks

Interface images

Identify the product type

Product images help distinguish crossarm, line support, suspension, bushing, silicone rubber compound and accessory interfaces.

Dimension use

Use drawings for dimensions, not rating transfer

CI-05 includes FXB and FXBW outline views; download composite insulator catalog PDFs before confirming dimensions for other interfaces.

Rating tables

Use listed values by interface

Crossarm, suspension and bushing values stay inside the selection option where they were listed.

Bushing data

Keep wall bushing reference rows with bushing interfaces

Use FCRG, FCRG-L, CCRG, RIF and porcelain wall rows only with their matching wall, tank, flange, conductor or CT interface.

Engineering selection

Composite Insulator RFQ Data

Confirm type, duty, interface and dimension evidence in that order so quotation data stays tied to the selected product option.

01 / InterfaceSelect selection option

Crossarm, horizontal line, pin, post, suspension, bushing, silicone rubber compound or accessory interface.

02 / DutyMatch mechanical and insulation duty

Use tensile, cantilever, voltage, current or flange duty as appropriate.

03 / InterfaceConfirm fittings and wall/tank data

End fittings, bracket, flange, conductor and wall opening decide the final package.

04 / DocumentsRequest dimension evidence

Use the suspension drawing view where it applies; request outlines for other interfaces if fixed dimensions matter.

Selection optionExact interface and model type such as FXB, FXBW, FCRG, CWW, HTV silicone rubber compound or accessory package.

Electrical dutySystem voltage, BIL, rated current, creepage distance and pollution grade.

Mechanical dutySML, cantilever load, bending load, fitting load or hardware load as applicable.

Interface detailEnd fitting, bracket, spindle, flange, wall opening, transformer tank or conductor terminal.

CT dataFor CT-integrated wall bushing, send ratio, accuracy class, burden and secondary terminal requirement.

Dimension requirementUse the suspension outline view or request an outline for the selected interface.

Material gradeFor HTV silicone rubber compound, send grade code, color, hardness, tensile and tear target, dielectric target, tracking class, package and quantity.

Site conditionAltitude, outdoor exposure, pollution level and destination standard; check certificates, test reports and RFQ forms when procurement needs supporting evidence.

QuantityQuantity by selection option, phase count and spare requirement.

FAQ

Composite Insulator FAQ

What data is needed for a composite insulator RFQ?

Send the selected insulator type, voltage class, creepage distance, mechanical load, fitting or flange interface, dimension requirement, quantity and destination standard.

Where are composite insulators used in distribution systems?

They are used for line support, suspension strings, conductor pass-through points, transformer tank interfaces, wall bushings, silicone-rubber material needs and accessory hardware packages.

How do engineers choose between pin, post, suspension and bushing interfaces?

Start from the installation interface and mechanical duty. Pin and post units support conductors or equipment, suspension units carry tensile string duty, and bushings pass a conductor through wall or tank insulation.

When are composite insulator drawings needed?

Use drawings when mounting holes, wall openings, flange dimensions, end fittings, tank interface or fixed length must be confirmed before production.

Can suspension SML ratings be used for post insulators?

No. Suspension SML data describes tensile string duty. Post insulator support needs cantilever, bending and flange data from the matching model row or project sheet.

Do composite insulator fittings set the electrical rating?

No. Fittings confirm hardware fit and mechanical connection. Electrical class, creepage distance, current and insulation duty must come from the selected insulator or bushing data.

Request Composite Insulator Quote

Send the selected option, voltage or current row, mechanical duty, fitting or flange interface, fixed dimension requirement and quantity. XIYA will confirm the matching product option, rating boundary and document list.

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Composite Insulators for Line, Post, Suspension and Bushing Interfaces

Composite Insulator Types

Composite Crossarm Insulator

33kV Horizontal Line Composite Insulator

Composite Pin Insulator

Composite Post Insulator

Composite Suspension Insulator

Dry Resin Impregnated Transformer Bushing

Dry Resin Impregnated Wall Bushing

Dry Composite Wall Bushing with Current Transformer

Dry Porcelain Wall Bushing

Porcelain Wall Bushing

Composite Insulator Accessories

HTV Silicone Rubber for Composite Insulators

Composite Insulator Applications

The installation interface decides which insulator type can be selected.

Crossarm, horizontal line, pin and post positions

FXB and FXBW tensile interface

Transformer, dry wall, porcelain and CT-integrated interfaces

End hardware after selection option selection

HTV silicone rubber compound before molding or purchase

Composite Insulator Selection Matrix

Composite Insulator Construction

Structure checks before release

Composite Insulator Ratings

Crossarm, pin, post and horizontal line rows stay separate.

Transformer, wall and CT-integrated bushing values cannot be merged.

Composite Insulator Drawings

Identify the product type

Use drawings for dimensions, not rating transfer

Use listed values by interface

Keep wall bushing reference rows with bushing interfaces

Composite Insulator RFQ Data

Composite Insulator FAQ

Request Composite Insulator Quote