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Product

RCC-E K1 / IEEE 1E nuclear LV cableRCC-E K1 & IEEE Class 1E0.6/1 kV · 60-Year Design LifeLOCA + 2,100 kGy Radiation

74C068 SH P K1 NA Nuclear K1 Class 1E LV Power Cable0.6/1 kV RCC-E K1 / Class 1E LOCA-qualified halogen-free nuclear containment power cable

Nuclear safety-related Class 1E / K1 low-voltage power cable (74C068 SH P K1 NA) qualified to RCC-E, EDF CST 74C068 and IEC 60780-323 for 60-year design life inside PWR/EPR reactor containment buildings under cumulative 2.1 MGy gamma irradiation and.

Flame-retardant
Water-resistant
Oil-resistant
Approved
Order designation
74C068 SH P K1 NA 3×50
Outer Ø ≈
28.6 mm
Copper weight
1,440 kg/km
Total weight ≈
1,890 kg/km
Ampacity (air)
177 A
All sizes (12)
Request a quoteDatasheetWhatsApp
Engineering reply in 2 business hoursCut-to-length export drumsEN 10204 3.1 certificate per drum
Qualification
RCC-E K1 / 1E
inside reactor containment
Rated voltage
0.6/1 kV
Umax = 1.2 kV AC / 1.5 kV DC
Design life
60 Years @ 90 °C
Arrhenius thermal aging verified
Radiation dose
≥ 2,100 kGy
2.1 MGy (210 Mrad) LOCA + life
LOCA steam
+175 °C / 5 bar
boric-acid & NaOH chemical spray
Fire class
NF C 32-070 C1
IEC 60332-3-22 Cat A · LSZH

Typical values for this cable type, based on EDF CST 74C068 / RCC-E K1 / IEC 60780-323 / IEEE 323 & 383 — confirmed in the datasheet and quotation for your order.

Application fit

Is 74C068 SH P K1 NA right for your machine?

Installed inside the primary containment building of pressurized water reactors (PWR, EPR, CPR1000, Hualong One) to power safety-injection pumps, containment isolation valves, hydrogen recombiners and emergency core cooling actuators before, during and after a Loss-of-Coolant Accident (LOCA).

Fixed installation

Suitable

Qualified for fixed ladder, tray and penetration routing inside K1/1E reactor containment and K2/K3 auxiliary buildings.

Offshore platform & shipboard deck trays

Suitable

Withstands +175 °C superheated steam, 500 kPa pressure transients and alkaline boric-acid/hydrazine containment spray.

TBM gantry & advancing tunnel reel

Suitable

Unarmoured ('NA') halogen-free cross-linked elastomer jacket resists abrasion through containment cable galleries.

Typical machinesPWR & EPR Nuclear Reactor Containment (K1)Emergency Core Cooling Systems (ECCS)Containment Isolation Valve ActuatorsNuclear Fuel Building & Radwaste Galleries

Construction

Layer by layer

Shown: 74C068 SH P K1 NA 3×50 mm² 0.6/1 kV with Class 2 annealed copper conductors, radiation-cross-linked EPDM/HEPR K1 primary insulation, halogen-free inner filling sheath and NF C 32-070 C1 cross-linked HFFR outer sheath.

1234
Schematic, not to scale — generated from the layer data
#LayerMaterial & reference
1Stranded annealed bare copper (Class 2)IEC 60228 / NF C 32-013 Class 2 stranded copper (1.5 to 300 mm²)Stable contact resistance over 60 years of thermal cycling
2Nuclear K1 radiation-resistant cross-linked EPR/EPDMHigh-modulus Ethylene-Propylene elastomer formulated with anti-rad aromatic stabilizersMaintains ≥ 50 % elongation-at-break and high insulation resistance after 2,100 kGy gamma dose + LOCA steam
3Halogen-free fire-barrier inner beddingExtruded non-hygroscopic LSZH elastomeric filler compoundPrevents steam/water longitudinal ingress during containment pressurisation
4Cross-linked Sans Halogène (SH) K1 outer sheathThermoset Halogen-Free Flame-Retardant (HFFR) elastomer (Black with K1 identificationPasses NF C 32-070 C1 fire-propagation test and resists boric-acid/soda chemical spray

74C068 SH P K1 NA (Unarmoured Power)

SH (Sans Halogène) · P (Puissance / Power) · K1 (In-Containment) · NA (Non-Armé / Unarmoured)

74C068 SH P K1 AR (Armoured Option)

Adds galvanized steel tape/braid armour for exposed floor trenches

Technical data

Ratings & operating limits

Typical values: Typical values for this cable type, based on EDF CST 74C068 / RCC-E K1 / IEC 60780-323 / IEEE 323 & 383. Values for your order are confirmed in the datasheet and quotation.

Electrical

Rated voltage (U₀/U)
0.6/1 kV AC (Umax = 1.2 kV AC / 1.5 kV DC)
Routine AC test voltage
3.5 kV AC rms for 5 minutes
Insulation resistance during LOCA peak
≥ 1.0 MΩ·km at +175 °C saturated steam under 1,000 V energisation

Thermal

Normal continuous conductor temp.
+90 °C (qualified for 60-year service life at +55 °C containment ambient)
LOCA / HELB accident peak temperature
+175 °C to +200 °C steam peak · +250 °C short-circuit (5 s)

Mechanical

Minimum bending radius
8 × OD (fixed unarmoured NA) · 12 × OD (during pulling)
Post-LOCA mandrel bend test
Withstands 2.5 kV AC in water after 40 × OD coiled LOCA exposure

Resistance

Cumulative gamma radiation qualification
≥ 2,100 kGy (850 kGy 60-yr aging + 1,250 kGy accident dose)
Fire & halogen-free performance
NF C 32-070 C1, IEC 60332-3-22 Cat A, IEC 60754-1/2 & IEC 61034-2

Reference standards

Nuclear qualification standards
EDF CST 74C068, AFCEN RCC-E (K1), IEC 60780-323, IEEE 323 & IEEE 383
Quality assurance programme
ISO 19443 / ASME NQA-1 / RCC-E nuclear safety QA traceability

Identification

Designation code breakdown
74C068 (EDF spec) + SH (LSZH) + P (Power) + K1 (Containment) + NA
Core identification
HD 308 S2 colour code or Black numbered 1, 2, 3… (+ G/Y on 'G' sizes)
Customs tariff (HS)
8544.49

Sizes

12 standard 74C068 SH P K1 NA nuclear Class 1E power cable sizes

Multi-core (2×2.5 to 3×95 mm²) and single-core (1×120 to 1×240 mm²) 0.6/1 kV K1 containment power cables.

Dimensions, weights & ampacity
Order designationConfigurationVoltageOuter Ø ≈
mm		Copper
kg/km		Weight ≈
kg/km		In air 30 °C
A		Min. bend R
mm		Enquiry
Multi-Core 0.6/1 kV K1 Containment Power Feeders (74C068 SH P K1 NA)
74C068 SH P K1 NA 2×2.52×2.5 mm²0.6/1 kV12.0482103296
74C068 SH P K1 NA 3G2.53G2.5 mm²0.6/1 kV12.67223828101
74C068 SH P K1 NA 3G43G4 mm²0.6/1 kV13.811530237110
74C068 SH P K1 NA 3G63G6 mm²0.6/1 kV15.117338548121
74C068 SH P K1 NA 3G103G10 mm²0.6/1 kV17.428854066139
74C068 SH P K1 NA 3G163G16 mm²0.6/1 kV19.846176088158
74C068 SH P K1 NA 3×253×25 mm²0.6/1 kV23.47201,120117187
74C068 SH P K1 NA 3×503×50 mm²0.6/1 kV28.61,4401,890177229
74C068 SH P K1 NA 3×953×95 mm²0.6/1 kV36.22,7363,280268290
Single-Core 0.6/1 kV K1 High-Current Motor & Bus Feeders
74C068 SH P K1 NA 1×1201×120 mm²0.6/1 kV21.81,1521,460345174
74C068 SH P K1 NA 1×1851×185 mm²0.6/1 kV25.61,7762,140450205
74C068 SH P K1 NA 1×2401×240 mm²0.6/1 kV28.82,3042,720535230
  • Typical values for this cable type; dimensions and weights for your order are confirmed in the quotation.
  • Screen-armoured (74C068 SH P K1 AR) and control/instrumentation (74C068 SH C / SH M K1) executions are also supplied.

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.

  1. ConductorClass 5 stranding
  2. Spark test100 % in-line
  3. Lay-upCores, earth, fillers
  4. SheathingInner, braid / screen, outer
  5. Electrical testsAC voltage, resistance
  6. DimensionsOD, wall thickness
  7. Inspection documents & dispatchDrum & dispatch
Testing & inspectionTest value / referenceFrequency
Routine tests
3.5 kV AC 5-min dielectric & NF C 32-070 C1 flame testZero breakdown; char propagation within C1 / Cat A limitsEvery batch
Sample tests
Sequential 60-yr thermal aging + 2,100 kGy gamma + LOCA steam/spray testMaintains rated voltage & IR ≥ 1 MΩ·km throughout 15-day LOCA profileQualification type test

Inspection certificate

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

Product approvals

AFCEN RCC-E Category K1 & EDF CST 74C068 QualifiedIEC 60780-323 & IEEE 323 / IEEE 383 Class 1ENF C 32-070 C1 & IEC 60332-3-22 Cat A

Company certificates

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

Marking & supply

Ordering & delivery

Sheath marking

TEBAOFLEX 74C068 SH P K1 NA 0.6/1kV <size> RCC-E K1 LOT#
Delivery form
Non-returnable fumigated wooden or steel drums
Standard lengths
250 m · 500 m · 1000 m standard drums
MOQ
250 m (stock sizes) · 500 m (custom)
Lead time
3–5 weeks ex-works
Incoterms
EXW, FCA, FOB, CIF, DAP

Technical documents

Downloads

PDF74C068 SH P K1 NA Nuclear K1 Class 1E LV Power Cable – technical datasheet12 sizes · construction, technical data, approvalsXLSX74C068 SH P K1 NA spec data (Excel)All 12 sizes with dimensions and data, for your BOM or quotation
Revision
2026-10-20
Updated
2026-10-20

FAQ

Questions engineers ask first

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

What do the codes K1, K2 and K3 mean in French RCC-E nuclear cable qualification?
Under AFCEN RCC-E, Category K3 covers safety-related cables outside the reactor containment subjected only to normal ambient aging and seismic events. Category K2 covers cables inside containment that are not required to operate during a LOCA. Category K1 (such as 74C068 SH P K1 NA) is the highest tier: cables installed inside the reactor containment building that must remain fully functional before, during and after a Design-Basis Accident (LOCA / HELB) plus 60 years of thermal and radiation aging.
What does '74C068 SH P K1 NA' stand for?
'74C068' is the EDF/Framatome technical specification number for nuclear low-voltage cables; 'SH' stands for Sans Halogène (halogen-free LSZH); 'P' stands for Puissance (power cable, as opposed to 'C' for control or 'M' for measurement); 'K1' denotes in-containment LOCA qualification; and 'NA' stands for Non-Armé (unarmoured).
How is the 60-year service life simulated prior to the LOCA steam test?
In accordance with IEC 60780-323 and RCC-E, cable specimens first undergo accelerated Arrhenius thermal aging (e.g. +135 °C for 10–15 days, equivalent to 60 years at +55…+70 °C) followed by sequential Cobalt-60 gamma irradiation (850 kGy aging dose + 1,250 kGy accident dose = 2,100 kGy total) before being placed inside the pressurised LOCA autoclave.
What factory routine tests and certificates are supplied with 74C068 SH P K1 NA?
Every production drum of 74C068 SH P K1 NA undergoes 100 % conductor DC resistance measurement at 20 °C, high-voltage AC/DC dielectric withstand testing, and dimensional verification per EDF CST 74C068 / RCC-E K1 / IEC 60780-323 / IEEE 323 & 383, supplied with an EN 10204 3.1 inspection certificate.

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74C068 SH P K1 NA Nuclear K1 Class 1E LV Power Cable

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