Laying and handling guide

Medium voltage cables: laying and handling

Single and three core cables to HD 620, IEC 60502-2 and BS 6622.

Every line names every source that states it and how it was seen; where sources disagree, each value is shown with its source. IEC, EN and HD documents and makers come first, national rules after them with their country.

Laying temperature and pre-warming

  • The limit is the temperature of the cable itself, not of the air: a drum stored in the cold stays cold after the air warms.Sources: HD 620 Part 1 A.4.12; HD 603 3-G, 5-G, 3-I, 4-B; Nexans 2021 p. 11 (read in the standard text)
  • Colder than its minimum: warm the whole drum for 1 to 2 days (at least 24 hours in HD 620 10-B). A full drum near the limit can take 20 to 30 hours to warm through (10-F).Sources: HD 620 Part 1 A.4.12; 10-F-20; 10-B-36 (read in the standard text)
  • Nexans: Warm at +10 °C or more for at least 24 hours, then unreel within 2 hours at about 20 m/min; below -5 °C outside, postpone the pull or warm the drums first.Sources: Nexans 2021 p. 11 (maker's document)
  • A cable stored below its minimum laying temperature takes no shocks, impacts, bending or twisting.Sources: HD 620 Part 1 A.3.1; HD 603 3-I 3.3; Nexans Belgium 2022 (read in the standard text)
  • HD 603 3-G, 5-G · HD 620 10-A, 10-C, 10-F: Cable temperature while laying and fitting accessories: at least -5 °C with a PVC sheath, -20 °C with a PE sheath; warm the cable when it is colder.Sources: HD 603 3-G-15 item 2; 5-G-15 item 2; HD 620 10-A-25 item 14; 10-C-26 item 14; 10-F-21 (read in the standard text)
  • HD 620 10-G: At least 0 °C.Sources: HD 620 10-G-27 (read in the standard text)
  • HD 620 10-N, 11-N: At least -5 °C.Sources: HD 620 10-N-14 (read in the standard text)
  • HD 620 10-L: At least 5 °C.Sources: HD 620 10-L-25 (read in the standard text)
  • HD 620 10-P: -5 to +40 °C cable temperature while laying; -25 to +60 °C air after laying.Sources: HD 620 10-P-19 (read in the standard text)
  • HES Kablo: Lowest air temperature while laying: +3 °C for PVC cables, -5 °C for XLPE cables.Sources: HES Kablo p. 391 (maker's document)

National rules

  • France HD 620 10-B: At least 0 °C for "G" and PVC sheaths; HDPE sheath -15 °C without a metal foil, 0 °C with one.Sources: HD 620 10-B-36 (read in the standard text)
  • India IS 1255: Warm a cable colder than 3 °C, whatever its insulation, in a heated building or a hot-air tent for at least 24 hours to about 10 °C, and lay it swiftly.Sources: IS 1255 8.4, p. 26 (read in the standard text)
  • Italy HD 620 10-I1, 10-I2, 12-I: At least -25 °C, while laying or handling.Sources: HD 620 10-I1-15, 10-I2-17, 12-I-16 (read in the standard text)
  • Netherlands HD 620 10-J: At least -5 °C.Sources: HD 620 10-J-39 item 12 (read in the standard text)
  • Norway HD 620 10-K, 12-K: At least -20 °C.Sources: HD 620 10-K-19 item 4 (read in the standard text)
  • Poland HD 620 10-R: At least 0 °C; -5 °C (PVC sheath) or -20 °C (PE sheath) under the maker's special conditions.Sources: HD 620 10-R-21 item 14 (read in the standard text)
  • Spain HD 620 9-E, 10-E1, 10-E2: At least 0 °C.Sources: HD 620 9-E-15 (read in the standard text)
  • Sweden HD 620 10-M: HFFR sheath: at least 0 °C with normal care, -10 °C with special care; PE sheath -20 °C.Sources: HD 620 10-M-15 (read in the standard text)
  • United Kingdom BS 6622, BS 5467, BS 7846: Cable and air above 0 °C for the previous 24 hours, or special precautions that keep the cable above 0 °C.Sources: BS 6622 C.1; BS 5467 B.2; BS 7846 A.7.2; HD 620 10-O-23; Anixter Sec. 20 p. 20-43 (read in the standard text)

Laying in winter? Pro checks your town and month against this limit. See Pro

Bending radius

  • IEC 60502-2: Gives no installation bending radius; the values below come from HD 620.Sources: IEC 60502-2 18.2.4 (type test cylinder only) (read in the standard text)
  • D is the cable's outer diameter. One controlled bend: a single bend next to a joint or termination, made by skilled workers over a template, the cable at or warmed to 30 °C.Sources: HD 620 Part 1 A.4.6; HD 603 3-G-16 (read in the standard text)
  • HD 620 10-A, 10-C, 10-R: 15 D while laying; 7.5 D for one controlled bend.Sources: HD 620 10-A-24, 10-C-25, 10-R-20 (read in the standard text)
  • HD 620 10-F: While laying 15 D single core, 12 D multicore; for one controlled bend 10.5 D and 8.4 D.Sources: HD 620 10-F-20 (read in the standard text)
  • HD 620 10-G: 30 D single core, 20 D three core while laying.Sources: HD 620 10-G-27 (read in the standard text)

National rules

  • France HD 620 10-B: 15 D while laying; 7.5 D for one controlled bend.Sources: HD 620 10-B-35 (read in the standard text)
  • India IS 1255: PVC and XLPE: single core 15 D up to 11 kV, 20 D above; multicore 12 D up to 1.1 kV, 15 D above. Cores at joints and terminations: more than 12 times the diameter over the insulation.Sources: IS 1255 5.3, Table 5, p. 14; 5.3.2 (read in the standard text)
  • Italy HD 620 10-I1, 10-I3, 12-I: 14 D while laying; 7 D for one controlled bend. D here is the core diameter.Sources: HD 620 10-I1-16, 10-I3-16, 12-I-17 (read in the standard text)
  • Netherlands HD 620 10-J, 12-J: 12 (D + d) single core, 10 (D + d) three core, d the conductor diameter; up to 20 % less allowed.Sources: HD 620 10-J-39, 12-J-39 (read in the standard text)
  • Norway HD 620 10-K, 12-K: 30 D while laying; 15 D for one controlled bend.Sources: HD 620 10-K-19, 12-K-19 (read in the standard text)
  • Spain HD 620 9-E, 10-E1, 10-E2: 20 D while laying; 15 D for one controlled bend.Sources: HD 620 9-E-15, 10-E1-19, 10-E2-16 (read in the standard text)
  • Sweden HD 620 10-M: While laying 15 D single core, 12 D three core; for one controlled bend 10 D and 8 D.Sources: HD 620 10-M-15 (read in the standard text)
  • Türkiye EKAT Çizelge-20: Three-core LV (XLPE or PVC) 12 D; three-core MV 15 D; armoured 15 D; single core 15 D.Sources: EKAT Madde 58 b) 9 (read in the standard text)
  • Türkiye TEDAŞ: As printed by HES Kablo: unarmoured LV 12 D single core, 10 D multicore; unarmoured MV 14 D and 12 D; armoured 15 D and 12 D. It differs from EKAT Çizelge-20.Sources: HES Kablo p. 388 (maker's document)
  • United Kingdom BS 6622: While laying 15 D single core, 12 D three core; for one controlled bend 12 D and 10 D.Sources: BS 6622 Tables C.1, C.2 (read in the standard text)

Pulling force and method

  • On the conductors, with a pulling eye or head: at most 50 N/mm² for copper and 30 N/mm² for aluminium, over the main conductors' total section.Sources: HD 603 3-G-16 and the other guides to use; HD 620 Part 1 A.4.13 a; 10-C-26; IS 1255 5.4.2, p. 15; EKAT Madde 58 b) 10; Nexans 2021 p. 13; HES Kablo p. 391 (read in the standard text)
  • Gather all conductors in the pulling head and clamp them together, so the force spreads evenly.Sources: HD 603 3-I; EKAT Madde 58 b) 10 (read in the standard text)
  • A swivel between the cable grip and the pulling rope.Sources: HD 620 10-R item 15; Draka p. 6 (read in the standard text)
  • Watch the tension all through a machine pull and keep the record with the as-laid documents. Prysmian: a winch with a dynamometer, a preset maximum and automatic stop; Draka: without a tension record the maker may refuse a claim.Sources: HD 620 Part 1 A.4.4; HD 603 3-G 3.3; IS 1255 10.3.5; Prysmian 2024 p. 10; Nexans 2021 p. 16; Draka p. 8 (read in the standard text)
  • Rollers on straight runs every 2 to 4 m (Prysmian) or 3 to 4 m (Nexans for direct burial, IS 1255); at bends several rollers forming a radius larger than the minimum bending radius (IS 1255: corner rollers and at least three solid plates).Sources: HD 620 Part 1 A.4.4; HD 603 3-G 3.3; IS 1255 10.2.2, p. 30; Prysmian 2024 p. 10; Nexans 2021 p. 16, 17 (read in the standard text)
  • Sidewall pressure: the maker's limit, checked before the pull at every bend, roller and deflection point; too much tears the sheath.Sources: BS 7846 A.7.4 d); Nexans 2021 p. 17; Anixter Sec. 20 p. 20-44 (read in the standard text)
  • Guide the cable into a duct along its axis, with a bell mouth at the duct end, in one continuous arc without a reverse bend.Sources: BS 7846 A.7.4 f); IS 1255 6.3.4.4, 6.4.1; Nexans 2021 p. 17; Southwire 2005 p. 3 (read in the standard text)
  • Cable laid out on the ground goes down in a figure of eight, never in rings: rings twist it.Sources: IS 1255 10.2.4.6, p. 32; Draka p. 9; Nexans 2021 p. 19 (read in the standard text)
  • HD 620 Part 1 A.4.13: On a cable grip over the sheath: 3 × D² N (D in mm), never more than on the conductors; three preassembled single cores take 3 times, three parallel cables 2 times a single core's value.Sources: HD 620 Part 1 A.4.13 c, d (read in the standard text)
  • Nexans: A pulling eye on the conductors instead of a stocking for lengths over 800 m or conductors over 630 mm².Sources: Nexans 2021 p. 13 (maker's document)
  • Southwire: Work out the tension section by section (straights, slopes, bends) and the sidewall pressure at every bend, and pull from the end that gives the lower maximum.Sources: Southwire 2005 pp. 13 to 17 (maker's document)

National rules

  • India IS 1255: On a stocking: 9 × D² N for armoured PVC or XLPE cables, 5 × D² N unarmoured, 3 × D² N for armoured paper cables. For armoured cables that is three times the HD 620 value.Sources: IS 1255 5.4.1, p. 15; HD 620 Part 1 A.4.13 c (read in the standard text)
  • India IS 1255: Expected winch force: 15 to 20 % of the cable's weight in a trench without large bends, 20 to 40 % with one or two 90° bends, 50 to 60 % with three, up to 100 % in ducts with bends totalling 360°.Sources: IS 1255 5.5, p. 16 (read in the standard text)
  • Netherlands HD 620 10-J, 12-J: Solid aluminium conductors: 20 N/mm².Sources: HD 620 10-J-39 (read in the standard text)
  • United Kingdom BS 6622: The maximum tension is the maker's value.Sources: BS 6622 D.4.2 (read in the standard text)

Work out the pull for your route: the verdict is free, the numbers and the PDF come with Pro. Pull calculation in the cable designer · See Pro

Depth, cover and laying

  • Choose the way of laying and the bedding for the oversheath; trench walls smooth and free of stones.Sources: HD 620 Part 1 A.4.2 d), A.4.4; HD 603 3-G 1.2 d) (read in the standard text)
  • Single-core cables: all three phases of one system through the same steel pipe or hole; fixings must not form a magnetic ring round one core.Sources: HD 620 Part 1 A.4.9 b); HD 603 3-G 1.4; 3-L 5.1.3; IS 1255 6.3.4.6, 8.8.4; EKAT Madde 58 b) 3, 7 (read in the standard text)
  • Duct inner diameter at least 1.5 D in most HD sections and IS 1255, 1.5 to 2 D in HD 603 3-L, 5-O and 5-P, at least 1.4 D in the Italian sections; keep sand out of the duct.Sources: HD 603 3-G, 5-G, 3-L, 5-O, 5-P, 7-A; HD 620 10-A, 10-B, 10-C, 10-F, 10-I1, 10-R, 12-I; IS 1255 6.3.4.3, p. 18 (read in the standard text)
  • Nexans: Thermal backfill: keep the specified thickness below and above and the trench width along the whole route, and never mix it with native soil, or the cable overheats.Sources: Nexans 2021 pp. 18 to 19 (maker's document)

National rules

  • France NF C 15-100, NF C 13-200: LV at least 0.50 m, HTA (MV) 0.80 m, 0.85 m under vehicle ways and pavements; a warning grid at least 0.20 m above the cable or its protection.Sources: Prysmian France pp. 1 to 2 (secondary source)
  • Germany HD 603 3-G, 5-G · HD 620 10-A, 10-C: At least 0.6 m deep, 0.8 m below roads; shallower only with other protection.Sources: HD 603 3-G-15 item 1.3, 5-G-15; HD 620 10-A-25 item 11, 10-C-26 item 11 (read in the standard text)
  • India IS 1255: At least 0.75 m to the top of the cable for LV and control cables, 0.9 m for 3.3 to 11 kV, 1.05 m for 22 and 33 kV, 1.0 m at road and railway crossings; at least 75 mm of riddled soil or sand below and above, then tiles, bricks or slabs.Sources: IS 1255 6.3.1, 6.3.2, 6.3.6, pp. 16, 19 (read in the standard text)
  • Italy HD 620 10-I1, 12-I: At least 0.8 m with slabs or tiles; 1.70 m for a screened unarmoured cable without protection.Sources: HD 620 10-I1-15 item 5.1.1, 12-I-16 (read in the standard text)
  • Poland HD 620 10-R: At least 0.8 m below ground; under roads, or shallower, with protection.Sources: HD 620 10-R-21 item 11 (read in the standard text)
  • Türkiye EKAT: At least 0.80 m under streets and squares, 0.60 m elsewhere, about 20 cm less with special protection where it cannot be avoided; road and rail crossings in pipes or channels, the top at least 1 m below the road surface or rail foot.Sources: EKAT Madde 58 b) 11, 16 (read in the standard text)
  • Türkiye EKAT: About 10 cm of sieved sand below and above the cable; brick, a concrete slab of at least 6 cm or a plastic cover over the sand along the whole route; a PE warning tape at least 10 cm wide about 30 cm above the cover.Sources: EKAT Madde 58 b) 13 (read in the standard text)
  • United Kingdom NJUG: Depth to the top of the cable: LV 450 mm under footways and verges, 600 mm under carriageways; HV 450 to 1200 mm and 750 to 1200 mm. Yellow marker tape directly above (HV: black and red legend, or concrete tiles).Sources: NJUG Table 1, p. 6 (read in the standard text)
Open groundSand bedWarning tape0.6 mNot found
Minimum cover: 0.6 m, Germany: 0.6 / 0.8 m below road surface; shallower only with other protection (HD 603 S1:1994/A2:2003 3-G-15 item 1.3, 5-G-15; HD 620 S3:2023 10-A-25 item 11, 10-C-26 item 11; read in the standard text). N2XSEY 3x95/16 12/20 kV. To scale: the cover and the cable, Ø 64.6 mm. The sand bed, warning tape and duct are a picture only.

Drum handling

  • Keep the drum upright, its axis horizontal, in storage and in transport; never lay it flat on a flange.Sources: HD 620 Part 1 A.3.2.5, A.3.3.2; IS 1255 7.7, p. 25; Prysmian 2024; Reka (read in the standard text)
  • Never drop a drum. Without lifting gear, use a ramp of about 1:4 (IS 1255: 1:3 to 1:4) with ropes or a winch and a sand bed at the foot.Sources: HD 620 Part 1 A.3.3.3; HD 603 3-I 3.3; IS 1255 7.3, p. 24; Prysmian 2024 p. 6; Reka p. 6; Nexans 2021 p. 4 (read in the standard text)
  • Roll it only short distances on firm ground, in the direction of the arrow on the flange.Sources: HD 620 Part 1 A.3.3.4; HD 603 3-I, 3-L; IS 1255 7.4, p. 24; Prysmian 2024 p. 7; Nexans 2021 p. 3 (read in the standard text)
  • Store it on level, firm, well-drained ground and turn it 90° every 3 months.Sources: IS 1255 7.5, 7.6, pp. 24 to 25; Prysmian 2024 p. 8, 9; Nexans 2021 p. 8, 9; Prysmian Türkiye 3.3 (read in the standard text)
  • Leave the battens on until the cable is about to be laid: they keep off sun and knocks.Sources: HD 620 Part 1 A.3.2.5; BS 6622 D.5.2; IS 1255 7.8, p. 25; Nexans 2021 p. 11 (read in the standard text)
  • Cable ends sealed with caps in transport, storage and laying. A cap missing for over a month, or a wet end: cut back 300 mm, check for moisture and cap again.Sources: HD 620 Part 1 A.3.2.3, A.4.7; HD 603 3-I 3.2; BS 6622 C.3; BS 5467 B.4; BS 7846 A.7.4; IS 1255 7.2, p. 24; Nexans 2021 p. 7; Draka (read in the standard text)
  • Pay out tangentially, never over the flange, with the drum on an axle and jacks and braked. Top or bottom: IS 1255 says off the top; Southwire chooses by where the cable goes (the bottom into a floor conduit, the top into a tray); Nexans Belgium says the bottom, for safety.Sources: HD 620 Part 1 A.4.5; IS 1255 8.2, 8.3, 10.2; Southwire 2005 p. 2 to 3; Nexans Belgium FAQ; Prysmian 2024 p. 10; Draka p. 5, 9 (read in the standard text)
  • HD 620: Drum barrel at least 18 D (10-A, 10-C, 9-E) up to 26 D (10-G, single core), by section.Sources: HD 620 A.3.2.2 of each section (read in the standard text)
  • HD 620 10-A, 10-C, 10-K · HD 603 3-L: Flange over 1.0 m: the drum axis horizontal in transport; in HD 603 3-L, drums over 2.5 t.Sources: HD 620 10-A-24 item 6; HD 603 3-L; Prysmian 2024 (read in the standard text)
  • Nexans: Over 10 t of cable: steel drums; wooden drums carry up to 10 t.Sources: Nexans 2021 p. 2 (maker's document)

Every rule for a chosen drum, with its lagging, weight and return terms: Cable drum calculator

Sheath test after laying

  • IEC 60502-2: A d.c. test of the oversheath between each metal screen or sheath and ground, at the level and for the time of IEC 60229 Clause 5; recommended for every new installation. It needs good contact between ground and oversheath (a conductive layer helps).Sources: IEC 60502-2 20.1, 20.2; HD 620 10-K, 12-K (read in the standard text)
  • IEC 60229: Installed cable: 4 kV per mm of oversheath thickness, at most 10 kV, for 1 minute (factory test 8 kV per mm, at most 25 kV).Sources: IEC 60229 cl. 5, p. 9; 3.1, p. 6 (read in the standard text)
  • HD 603 3-G, 5-G · HD 620 10-A, 10-C, 10-R: At most 3 kV d.c. on a PVC sheath, 5 kV d.c. on a PE sheath; faults usually show within 1 minute.Sources: HD 603 3-G 1.6, 5-G 1.6; HD 620 10-A 3.5, 10-C 3.5, 10-R 3.5 (read in the standard text)
  • HD 620 10-F, 10-K, 12-K · BS 6622: A d.c. test of the insulation is not recommended: it may harm it.Sources: HD 620 10-F, 10-K, 12-K; BS 6622 (read in the standard text)
  • Look the cable over before burying it, trace it with a locator afterwards, and check the end caps after the pull.Sources: HD 620 10-R-18 item 1; IS 1255 8.7, p. 27; Nexans 2021 p. 13; Draka p. 8 (read in the standard text)

National rules

  • India IS 1255: A d.c. test of the insulation after installation, 5 minutes, conductor to sheath: 3 kV (0.65/1.1 kV), 18 kV (6.35/11 kV), 37.5 kV (12.7/22 kV), 60 kV (19/33 kV). This goes against the HD 620 and BS 6622 advice not to test the insulation with d.c.Sources: IS 1255 14.2.4, Table 6, p. 60; HD 620 10-F, 10-K, 12-K; BS 6622 (read in the standard text)
  • Netherlands HD 620 10-J: 5 kV d.c. for 5 minutes between screen and earth, first and repeated tests.Sources: HD 620 10-J-37 item 2 (read in the standard text)
  • Poland HD 620 10-R: PE sheath 5 kV d.c., under 100 µA/km; PVC sheath 3 kV d.c., under 800 µA/km; read 1 minute after the current settles.Sources: HD 620 10-R-18 item 5 (read in the standard text)
  • Sweden HD 620 10-M: Up to 5 kV d.c. for 5 minutes.Sources: HD 620 10-M-15 (read in the standard text)
  • United Kingdom BS 6622: Oversheath with a semiconducting layer: 8 kV d.c. for 1 minute; joints insulated from earth, or test before jointing.Sources: BS 6622 C.7.2 (read in the standard text)

The tests after installation for one cable, with their voltages, in the cable designer: Test after installation

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Cable end preparation

The common order of the makers and standards the research found; each step names every source. The lengths depend on the kit: its own instruction decides.

Wonder which lug, termination or joint fits your cable, and how its screen is earthed? See them fitted on your own cable with Pro. See Pro · Members: see them fitted in the designer

  1. Check the kit fits the cable and cut the cable square at its final position.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, pp. 1, 3, 4 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 2 (1.1) (maker's document); TEDAŞ-MLZ/99-033.B (2023) (read in the standard text)
  2. Remove the outer sheath and any graphite or semicon coat; abrade and clean the sheath next to the cut.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 4 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 2 (maker's document); powerandcables.com, 132 kV termination masterclass (secondary source)
  3. Cut back the armour and the bedding; carry the armour across the joint or bond it to earth.Sources: Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 4 (maker's document); TEDAŞ-MLZ/99-033.B (2023), 2.2.2 (read in the standard text)
  4. Fold the screen wires back over the sheath, or cut the tape screen; bind them and form the earth lead. HV: open the metal sheath.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 4 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 3 (maker's document); BS 6622:2007, Annex C.6 (read in the standard text); powerandcables.com, 132 kV termination masterclass (secondary source)
  5. Peel the insulation screen back to its cut-back without cutting into the insulation. HV: finish with glass and taper the screen end.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 4 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 3 (maker's document); powerandcables.com, 132 kV termination masterclass (secondary source); IEC 60502-2:2014, 19.23.3 (read in the standard text); BS 6622 Annex I (read in the standard text)
  6. Smooth the insulation: no conductive traces, no nicks. HV: polish to the maker's grit and measure the diameter.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); powerandcables.com, 132 kV termination masterclass (secondary source); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 6 (maker's document)
  7. Cut the insulation back for the lug or connector without nicking the conductor.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 7 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 3 (maker's document)
  8. Clean from the cable end towards the insulation screen, never the other way.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); powerandcables.com, 132 kV termination masterclass (secondary source); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 6 (maker's document)
  9. Fit the stress control over the screen end: tape, mastic or tube, or a moulded cone.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 6 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 4 (maker's document); TEDAŞ-MLZ/99-033.B (2023) (read in the standard text); powerandcables.com, 132 kV termination masterclass (secondary source)
  10. Crimp or bolt the lug or connector; file sharp edges and fill the gaps.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 7 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 3 (maker's document); Klauke die HD 13, DIN 46235 die codes (maker's document)
  11. Shrink, push on or cold shrink the insulation and outer protection; fit sheds outdoors and keep the clearances.Sources: Ensto PEM1093ENG 2017-04, HIT1 / HOT1 12 to 36 kV (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); Nexans Euromold IS 24CSJ2-E-09, 12 and 24 kV (maker's document); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, pp. 7 to 9 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, pp. 4 to 5 (maker's document)
  12. Earth the screen and the armour. HV: run the bonding leads to the link box.Sources: BS 6622:2007, Annex C.6 (read in the standard text); TEDAŞ-MLZ/99-033.B (2023), 2.3.1 (read in the standard text); Prysmian Assembly Instructions 81006A (2022), MST 12 to 36 kV, p. 5 (maker's document); Nexans Italia IM1778DI.1, MONOi / MONOe-1, p. 5 (maker's document); TE Raychem ESD-5243-AU-10/09, OXSU-F 36 kV (maker's document); powerandcables.com, 132 kV termination masterclass (secondary source); IEC 60840:2011, Annex G (read in the standard text)
  13. Test the cable after installation.Sources: IEC 60502-2:2014, clause 20 (read in the standard text); IEC 60840:2011, clause 16 (read in the standard text); HD 620 S3:2023 (read in the standard text)

Want to see this for your own cable, with the cut-back lengths? Cable end preparation in the cable designer · See Pro

In the cable designer

Cable codes of this family

N2XSY · NA2XSY · NA2XS2Y · NA2XS(F)2Y

Terms on this page

backfill · barrel (drum core) · bedding · bending radius · conduit · corner roller · crossing · cut-back · direct burial · duct (protective pipe) · dynamometer (load cell) · end cap · fault location (sheath fault) · flange · joint · lagging (battens) · oversheath (outer sheath) · pre-warming (pre-heating) · pulling eye · pulling head · pulling rope · sheath test (oversheath d.c. test) · sieved sand · spindle (axle) · steel drum · swivel · termination · thermal backfill · trench · verge / footway / carriageway · warning grid · warning tape · winch

Sources

Values as the sources print them. For a given job the cable's own standard, the maker's datasheet and the country's rules decide.

Other cable families

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