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Product

IEC 62420 GZTACSR IEC 62420 /IEC 62004Up to 500 kV AC−40…+210 °C

GZTACSR Gap-Type Super-Thermal Overhead ConductorIEC 62420 /IEC 62004 · Up to 500 kV AC · -40 °C to +210 °C industrial GZTACSR construction

GZTACSR Gap-Type Super-Thermal-Resistant Aluminum Alloy Overhead Conductor (GZTACSR) engineered to IEC 62420 /IEC 62004 for Up to 500 kV AC service across -40 °C to +210 °C, featuring extra-high-strength galvanized steel core & gap and trapezoidal inner &

Approved

Outdoor & humid

Ozone, UV & moisture

Nominal area

Order designation: GZTACSR 240 mm²
Outer Ø ≈: 21.8 mm
Total weight ≈: 885 kg/km
Rated tensile ≈: 84.5 kN
Stranding: 26/3.44 + 7/2.68

All sizes (10)

Request a quote Datasheet WhatsApp info@tebaoflex.com

Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum

Rated voltage: Up to 500 kV AC
Operating temp.: −40…+210 °C
Min. bend radius: 20 × OD
Conductor: Extra-high-stren
Outer layer: Trapezoidal
Standard: IEC 62420

Typical values for this cable type, based on IEC 62420 /IEC 62004 — confirmed in the datasheet and quotation for your order.

Application fit

Is GZTACSR right for your machine?

Fixed installation

Suitable

Engineered and verified for fixed service in accordance with IEC 62420 /IEC 62004.

Switchgear & control cabinet wiring

Suitable

Suitable for switchgear, control panels and equipment terminations within 20 × OD bend radius.

TBM gantry & advancing tunnel reel

With conditions

Use mechanical conduit or armoured protection where exposed to rock fall or crushing loads.

Motorised monospiral reel

Not suitable

Not designed for high-speed monospiral crane reeling; select a dedicated reeling cable.

NSHTOU Reeling Cable

Typical machinesRenewable Energy & EV ChargingHigh-Voltage Grid & Substation InterconnectsWind, Solar & Hydro Power EvacuationUtility Overhead & Underground DistributionIndustrial Power InfrastructureMetallurgical, Glass & Ceramic Furnaces

Construction

Layer by layer

Shown: GZTACSR (IEC 62420 /IEC 62004) with extra-high-strength galvanized steel core & gap, trapezoidal inner & round outer ztal layers and trapezoidal inner & round outer ztal layers (2-layer construction).

Schematic, not to scale — generated from the layer data

#	Layer	Material & reference
1	Extra-high-strength galvanized steel core & gap	High-tensile galvanized steel core inside a heat-resistant grease-filled annular gapIEC 62420 /IEC 62004
2	Trapezoidal inner & round outer ZTAL layers	Super-thermal-resistant zirconium-aluminum alloy (ZTAL) layers (+210 °C continuous)IEC 62420 /IEC 62004

GZTACSR — Standard Execution

Built to IEC 62420 /IEC 62004 with extra-high-strength galvanized steel core & gap and trapezoidal inner &

GZTACSR — Custom Cross-Sections

Full range of metric mm² and AWG/kcmil conductor sizes per IEC 62420 /IEC 62004

GZTACSR — Export Drum Supply

Supplied with EN 10204 3.1 routine dielectric & conductor resistance test certificate

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on IEC 62420 /IEC 62004. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage / duty: Up to 500 kV AC (IEC 62420 /IEC 62004)
Conductor construction: Extra-high-strength galvanized steel core & gap — High-tensile galvanized steel core inside a heat-resistant grease-filled annular gap
Primary insulation / dielectric: Trapezoidal inner & round outer ZTAL layers — Super-thermal-resistant zirconium-aluminum alloy (ZTAL) layers (+210 °C continuous)

Thermal

Continuous operating temperature: −40…+210 °C per IEC 62420 /IEC 62004
Short-circuit / peak thermal limit: +160 °C to +250 °C (5 s adiabatic limit depending on dielectric class)
Minimum installation temperature: −5 °C (thermoplastic) / −25 °C (cross-linked or elastomer) / −40 °C (metallic)

Mechanical

Outer protection / covering: Trapezoidal inner & round outer ZTAL layers — Super-thermal-resistant zirconium-aluminum alloy (ZTAL) layers (+210 °C continuous)
Minimum bending radius: 20 × OD (installed / static routing)
Layer count & geometry: 2 concentric/structural layers verified by cross-section inspection

Resistance

Environmental & chemical durability: Engineered for industrial service in accordance with IEC 62420 /IEC 62004
RoHS & REACH compliance: RoHS 2 (2011/65/EU + 2015/863) & REACH SVHC compliant

Reference standards

Governing product standard: IEC 62420 /IEC 62004
Quality management & inspection: ISO 9001:2015 & EN 10204 3.1 factory routine inspection

Identification

Model designation: GZTACSR
Customs tariff (HS): 8544.49 / 8544.60 / 7614.10

Sizes

10 standard GZTACSR overhead conductor sizes

Manufactured to IEC 62420 /IEC 62004 in standard cross-sections from 50 mm² to 630 mm² (and North American AWG/kcmil code words).

Dimensions, stranding, breaking load & weights
Order designation	Nominal area	Stranding	Outer Ø ≈ mm	Weight ≈ kg/km	Rated tensile kN ≈	Min. sheave R mm
GZTACSR Standard Transmission & Distribution Schedule (−40…+210 °C)
GZTACSR 50 mm²	50 mm²	7/3.00 mm	9.0	138	14.5	180
GZTACSR 95 mm²	95 mm²	19/2.52 mm	12.6	262	28.2	252
GZTACSR 120 mm²	120 mm²	19/2.85 mm	14.3	334	36.4	286
GZTACSR 150 mm²	150 mm²	26/2.70 + 7/2.10	17.1	546	53.8	342
GZTACSR 185 mm²	185 mm²	26/3.00 + 7/2.33	19.0	674	65.2	380
GZTACSR 240 mm²	240 mm²	26/3.44 + 7/2.68	21.8	885	84.5	436
GZTACSR 300 mm²	300 mm²	26/3.86 + 7/3.00	24.5	1,110	104.2	490
GZTACSR 400 mm²	400 mm²	54/3.08 + 7/3.08	27.7	1,432	126.0	554
GZTACSR 500 mm²	500 mm²	54/3.44 + 7/3.44	31.0	1,790	156.5	620
GZTACSR 630 mm²	630 mm²	54/3.86 + 19/2.32	34.8	2,245	194.0	696

Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
Custom kcmil/code-word sizes, grease-filled corrosion protection and non-specular surface finishes available per IEC 62420 /IEC 62004.

DC resistance & continuous current ratings
Nominal area	Max. DC R₂₀ Ω/km	Continuous current A ≈	Operating temp.
50 mm²	0.578	210	−40…+210 °C
95 mm²	0.304	320	−40…+210 °C
150 mm²	0.192	435	−40…+210 °C
240 mm²	0.119	590	−40…+210 °C
400 mm²	0.072	820	−40…+210 °C
630 mm²	0.046	1,080	−40…+210 °C

Ampacity calculated per IEEE 738 (0.6 m/s wind, 40 °C ambient, 0.5 solar absorptivity / emissivity).

Quality & approvals

Testing & inspection

Routine tests on every production length, sample and type tests per batch — documented on an EN 10204 3.1 inspection certificate.

ConductorClass 5 stranding
Spark test100 % in-line
Lay-upCores, earth, fillers
SheathingInner, braid / screen, outer
Electrical testsAC voltage, resistance
DimensionsOD, wall thickness
Inspection documents & dispatchDrum & dispatch

Testing & inspection	Test value / reference	Frequency
Routine tests
Conductor DC resistance & dimensional verification (IEC 62420 /IEC 62004)	DC resistance at 20 °C and geometry within IEC 62420 /IEC 62004 class limits	Every manufactured drum / spool
Routine dielectric / spark / structural integrity test (IEC 62420 /IEC 62004)	Zero breakdown or structural defect over full production length	Every manufactured drum / spool
Sample tests
Thermal aging, mechanical & material qualification (IEC 62420 /IEC 62004)	Full compliance with IEC 62420 /IEC 62004 across −40…+210 °C	Type qualification & periodic sample audit

Inspection certificate

Issued with every drum, listing the routine test results for that length.

Product approvals

IEC 62420 CompliantEN 10204 3.1 Routine Test CertificateCE, RoHS 2 (2011/65/EU) & REACH

Company certificates

ISO 9001ISO 14001ISO 45001VDE marks approvalUL / cULCE · LVD / EMC

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX GZTACSR <size> IEC 62420 Up to 500 kV AC CE

Delivery form: Non-returnable fumigated wooden drums or precision DIN spools
Standard lengths: 500 m · 1000 m · 2000 m drums (custom cut lengths on request)
MOQ: 500 m (stock sizes) · 1000 m (custom production)
Lead time: 2–4 weeks ex-works
Incoterms: EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDFGZTACSR Gap-Type Super-Thermal-Resistant Aluminum Alloy Overhead – technical datasheet10 sizes · construction, technical data, approvals XLSXGZTACSR spec data (Excel)All 10 sizes with dimensions and data, for your BOM or quotation

Revision: 2026-10-21
Updated: 2026-10-21

FAQ

Questions engineers ask first

Not covered here? Send your drawing — an engineer replies within 2 business hours.

What governing standard and construction define GZTACSR (GZTACSR Gap-Type Super-Thermal-Resistant Aluminum Alloy Overhead Conductor)?

GZTACSR (GZTACSR Gap-Type Super-Thermal-Resistant Aluminum Alloy Overhead Conductor) is manufactured in accordance with IEC 62420 /IEC 62004 for Up to 500 kV AC service over -40 °C to +210 °C. Its 2-layer construction comprises extra-high-strength galvanized steel core & gap, trapezoidal inner & round outer ztal layers.

What is the minimum bending radius and installation temperature for GZTACSR?

The minimum installed bending radius for GZTACSR is 20 × OD across its continuous operating temperature range of -40 °C to +210 °C, ensuring mechanical and dielectric stability without conductor or insulation strain.

How are the concentric layers of GZTACSR arranged from inside to outside?

From inside to outside, the construction sequence is: (01) Extra-high-strength galvanized steel core & gap (High-tensile galvanized steel core inside a heat-resistant grease-filled annular gap); (02) Trapezoidal inner & round outer ZTAL layers (Super-thermal-resistant zirconium-aluminum alloy (ZTAL) layers (+210 °C continuous)).

What factory test certificates are supplied with GZTACSR?

Every production drum or spool of GZTACSR undergoes routine conductor DC resistance, dimensional and dielectric/integrity testing per IEC 62420 /IEC 62004, and is delivered with an EN 10204 3.1 factory test certificate.

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01Selected sizes

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02Reel & motion

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Reel typeDrum core diameter (mm)Cable length on drum (m)Travel speed (m/min)Max. accelerationCycles per hourLength and quantityAmbient temperatureExposure (outdoor, water, oil, abrasion)Destination countryEquipment and operating conditions

03Message for our engineers

GZTACSR Gap-Type Super-Thermal Overhead Conductor

Selected sizes:


Reel & motion:
- Reel type: 
- Drum core diameter (mm): 
- Cable length on drum (m): 
- Travel speed (m/min): 
- Max. acceleration: 
- Cycles per hour: 
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- Ambient temperature: 
- Exposure (outdoor, water, oil, abrasion): 
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