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Solar DC Cable

Solar DC Cable Solar DC Cable
Solar & PV Cables

Solar DC Cable

H1Z2Z2-K  ·  EN 50618 / IS 17293:2020 / IEC 62930

Single-core interconnection cable for the DC side of photovoltaic systems — module to string, string to combiner box and combiner to inverter.

Electron beam cross-linked XLPO insulation and sheath, built for outdoor installation under direct solar radiation and humidity, at 90 °C continuous conductor temperature with a 120 °C overload rating permitted for a cumulative 20,000 hours.

1.5 kV DC
1.0/1.0 kV AC
max. 1.8 kV DC
90°C
Continuous conductor
120 °C · 20,000 h
−40 to +90 °C
Ambient temperature
25 years
Service life at 90 °C conductor
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BIS / ISI Mark IS 17293:2020
Lic.
CE / CPR DoP · Euroclass
RoHS & REACH Compliant
ISO Certified 9001:2015 · 14001:2015 · 45001:2018

Applications

Rooftop PV

Commercial and industrial rooftop photovoltaic installations.

Ground Mount

Utility-scale solar plants and ground-mounted PV systems.

Floating Solar

Solar installations operating in high humidity and continuous outdoor exposure.

Module to String

DC interconnection between photovoltaic modules and strings.

String to SCB

String connections to solar combiner boxes.

SCB to Inverter

DC feeder connection between combiner box and inverter.

BESS DC

DC connections within battery energy storage applications.

Standards & Test Methods

EN 50618 Electric cables for photovoltaic systems, rated 1.5 kV DC.
IS 17293:2020 Electric cables for photovoltaic systems, rated voltage 1500 V DC.
IEC 62930 Electric cables for photovoltaic systems, 1.5 kV DC.
IEC 60228 Conductors of insulated cables.
IEC 60754-1 Halogen acid gas emission test.
IEC 60754-2 Determination of acidity and conductivity.
IEC 61034-2 Smoke density measurement.
IEC 60811-404 Mineral oil resistance test.
IEC / EN 60332-1-2 Vertical flame propagation test.
HD 605/A1 UV / weathering resistance.

Construction

CONDUCTOR

Tinned annealed copper

EN 50618 range: metal-coated (tinned) annealed copper, Class 5 flexible, to IEC 60228. 1.5 – 240 sq mm.

IS 17293 range: tinned or bare copper Class 5 to IS 8130; Class 2 copper or aluminium from 16 sq mm upward. 1.5 – 400 sq mm.

INSULATION

Cross-linked polyolefin (XLPO)

halogen-free, Halogen-free cross-linked polyolefin, insulating compound type EI 6 to EN 50618 / IEC 62930. Rated 90 °C continuous with a 120 °C overload allowance.

Cross-linking: electron beam (e-beam) irradiated

SHEATH

UV-resistant XLPO

Halogen-free, flame-retardant cross-linked polyolefin outer sheath, stabilised against UV and ozone.

Colours: black, red, black with red stripe.

Features

Designed for long-term photovoltaic outdoor operation with resistance against heat, moisture, UV radiation, ozone and chemicals.

✓
Electron beam cross-linked insulation 90 °C continuous conductor temperature and 120 °C overload for a cumulative 20,000 hours.
✓
Damp-heat resistant Designed for damp-heat exposure at 90 °C and 85% relative humidity.
✓
Halogen-free construction IEC 60754-1 and IEC 60754-2 compliant halogen-free construction.
✓
Oil and chemical resistant Resistant to mineral oil as well as acid, alkali and ammonia exposure.
✓
Flame retardant and low smoke IEC / EN 60332-1-2 and IEC 61034-2.
✓
Tinned conductor Metal-coated Class 5 copper provides improved corrosion resistance for outdoor photovoltaic use.
✓
UV, ozone and weathering resistant Suitable for prolonged outdoor solar exposure.
✓
Long service life Expected service life of 25 years at the specified operating conditions.

Technical Specifications

PARAMETER EN 50618 / IEC 62930 RANGE IS 17293:2020
Type designation H1Z2Z2-K As per IS 17293:2020
Rated voltage 1.0/1.0 kV AC; 1.5 kV DC 1.0/1.0 kV AC; 1.5 kV DC
Maximum permissible DC voltage 1.8 kV DC conductor to conductor, non-earthed system 1.8 kV DC
Conductor Tinned annealed copper, Class 5, IEC 60228 Tinned / bare copper Class 5 (IS 8130); Class 2 Cu / Al from 16 sq mm
Size range 1.5 – 240 sq mm 1.5 – 400 sq mm
Insulation Halogen-free XLPO, Type EI 6 Halogen-free XLPO
Sheath Halogen-free XLPO, UV resistant Halogen-free XLPO, UV resistant
Cross-linking process Electron beam (e-beam) irradiation Electron beam (e-beam) irradiation
Max. conductor temp. — continuous 90 °C 90 °C
Max. conductor temp. — overload 120 °C / cumulative 20,000 h 120 °C / cumulative 20,000 h
Max. short-circuit temperature 250 °C / max. 5 sec. 250 °C / max. 5 sec.
Ambient temperature range −40 °C to +90 °C −40 °C to +90 °C
Expected service life 25 years at 90 °C conductor 25 years at 90 °C conductor
Minimum bending radius 4 × overall diameter, fixed installation 4 × overall diameter

Dimensions & Electrical Data

Dimensions & Insulation Resistance — BS EN 50618, Tinned Copper Class 5

Nominal Area (MM²) Insulation Thickness (MM) Sheath Thickness (MM) Mean Overall Ø (MM) Max. Conductor Resistance @20 °C (Ω/KM) Min. Insulation Resistance @20 °C (MΩ·kM) Min. Insulation Resistance @90 °C (MΩ·KM)
1 × 1.5 0.7 0.8 5.4 13.7 860 0.86
1 × 2.5 0.7 0.8 5.9 7.98 690 0.69
1 × 4 0.7 0.8 6.6 4.95 580 0.58
1 × 6 0.7 0.8 7.4 3.30 500 0.50
1 × 10 0.7 0.8 8.8 1.91 420 0.42
1 × 16 0.7 0.9 10.1 1.21 340 0.34
1 × 25 0.9 1.0 12.5 0.780 340 0.34
1 × 35 0.9 1.1 14.0 0.554 290 0.29
1 × 50 1.0 1.2 16.3 0.386 270 0.27
1 × 70 1.1 1.2 18.7 0.272 250 0.25
1 × 95 1.1 1.3 20.8 0.206 220 0.22
1 × 120 1.2 1.3 22.8 0.161 210 0.21
1 × 150 1.4 1.4 25.5 0.129 210 0.21
1 × 185 1.6 1.6 28.5 0.106 200 0.20
1 × 240 1.7 1.7 32.1 0.0801 200 0.20

Current Carrying Capacity — BS EN 50618

Area (mm²) Free in Air (A) On Surface (A) Two Loaded Cables (A)
1.5 30 29 24
2.5 41 39 33
4 55 52 44
6 70 67 57
10 98 93 79
16 132 125 107
25 176 167 142
35 218 207 176
50 276 262 221
70 347 330 278
95 416 395 333
120 488 464 390
150 566 538 453
185 644 612 515
240 775 736 620

Dimensions & Insulation Resistance — IS 17293:2020 Class 5

Area (mm²) Insulation Sheath Overall Ø Max. Resistance @20 °C Min. Insulation Resistance @20 °C Min. Insulation Resistance @90 °C
1.5 0.7 0.8 5.9 13.7 862 0.862
2.5 0.7 0.8 6.9 7.98 709 0.709
4 0.7 0.8 7.4 4.95 610 0.610
6 0.7 0.8 8.3 3.30 489 0.489
10 0.7 0.8 9.8 1.91 389 0.389
16 0.7 0.9 11.3 1.21 393 0.393
25 0.9 1.0 13.8 0.780 335 0.335
35 0.9 1.1 15.3 0.554 295 0.295
50 1.0 1.2 18.1 0.386 271 0.271
70 1.1 1.2 21.1 0.272 251 0.251
95 1.1 1.3 23.6 0.206 223 0.223
120 1.2 1.3 25.5 0.161 207 0.207
150 1.4 1.4 28.2 0.129 204 0.204
185 1.6 1.6 30.7 0.106 203 0.203
240 1.7 1.7 35.0 0.0801 237 0.237
300 1.8 1.8 39.5 0.0641 237 0.237
400 2.0 2.0 45.0 0.0486 237 0.237

Current Carrying Capacity — IS 17293:2020

Area (mm²) Free in Air (A) On Surface (A) Two Loaded Cables (A)
1.5 28 27 22
2.5 38 36 30
4 52 49 41
6 66 63 53
10 89 87 73
16 119 118 97
25 167 158 126
35 207 196 156
50 261 248 190
70 329 313 245
95 394 374 298
120 462 440 348
150 537 510 401
185 611 581 460
240 735 698 545
300 831 788 631
400 999 947 751

Derating Factors

Ambient Temperature Correction

Ambient °C 0 10 20 30 40 50 60 70
Factor 1.34 1.26 1.19 1.10 1.00 0.90 0.78 0.64
EN 50618 ratings are based on the specified ambient/conductor conditions. Apply the relevant correction factors for the actual installation.

Grouping Reduction Factors

Arrangement 1 2 3 4 5 6 7 8
Bunched in air / surface / enclosed 1.00 0.80 0.70 0.65 0.60 0.57 0.54 0.52
Single layer on wall / floor / unperforated tray 1.00 0.85 0.79 0.75 0.73 0.72 0.71 0.71
Single layer on perforated tray 1.00 0.88 0.82 0.77 0.75 0.73 0.73 0.72
Single layer on cable ladder / cleats 1.00 0.87 0.82 0.80 0.80 0.79 0.79 0.78

Ordering Information

Range & Options

  • Sizes: 1.5 to 240 sq mm under EN 50618 and 1.5 to 400 sq mm under IS 17293.
  • Sheath colours: Black, red and black with red stripe.
  • Core identification: Red / black / natural.
  • Standard packing: Available as per project requirement.
  • Non-standard lengths: Available on request.

Sheath marking legend

DYNAMIC CABLES LTD | SOLAR DC CABLE | H1Z2Z2-K | 1×__ mm² | 1.5 kV DC | EN 50618 / IS 17293 | ISI LIC. __ | __ m | MFG __/__

Downloads

Solar DC Cable Datasheet Technical datasheet IS 17293 Type Test Third-party test certificate BIS / ISI Certificate IS 17293:2020 CE / CPR Documentation Declaration of Performance Solar Cable Catalogue DC & AC cable range

Frequently Asked Questions

EN 50618 or IS 17293 — which should I specify?
IS 17293:2020 is the Indian photovoltaic cable standard, while EN 50618 is the European standard associated with H1Z2Z2-K photovoltaic cables. The required standard should be selected according to the project specification, applicable certification and market requirements.
Why is the conductor tinned?
Tinning provides additional corrosion protection to the copper conductor and is particularly useful for long-term outdoor photovoltaic installations.
Can PVC-insulated cable be used on the DC side?
The photovoltaic DC cable specification is designed around continuous elevated conductor temperature, UV exposure, outdoor weathering and the required halogen-free properties. Therefore the cable selected for the PV DC side should meet the applicable photovoltaic cable standard.
What does the 120 °C rating mean?
120 °C is the specified overload conductor temperature. The continuous conductor operating temperature is 90 °C, with the 120 °C condition permitted for the specified cumulative operating duration.
How do I derate for Rajasthan summer ambient?
Apply the correction factor for the design ambient to the IS 17293 ratings, then the grouping factor for the tray arrangement. Both tables are in section 07. For ambients above 70 °C, contact our technical team — the published factor table stops there.
What is the minimum order quantity and lead time?
Standard sizes are stocked in common colours; non-standard lengths, colours and drum sizes are made to order. Send the size, length and delivery location through the enquiry form below and our solar desk will confirm quantity and lead time.

Need help selecting the right cable?

Send the size, run length and quantity and our solar desk will come back with a quote and a string sizing check.

Solar & Renewables — Dynamic Cables Limited

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