66KV POWER CABLE

Triple-layer water-blocking 66kV cable. Superior moisture protection for long underground service. For wind farms substations.

Details
Images
Related Product
Inquiry

Application

IEC 60840 66kV XLPE HV cable for primary transmission from utilities to substations, regional grid connections, industrial zone underground feeders, and wind farm collector networks. Triple-layer longitudinal/radial water-blocking system extends underground service life.

Core Strengths

Water ingress kills 66kV cable lifespan. Our triple-layer water-blocking system and XLPE insulation provide superior moisture protection for long underground service. CE/TÜV/ISO. Factory direct.

Standard

GB 11017， IEC60840

Construction

☉〉 Conductor: Stranded copper (class 2)

☉〉 Conductor screen: Semiconductive layer

☉〉 Insulation: XLPE (cross-linked polyethylene)

☉〉 Insulation screen: Semiconductive layer

☉〉 Copper wire with copper tape: Metallic shield

☉〉 Water‑proof layer: Semi‑conductive water‑blocking tape

☉〉 Inner sheath: PVC or PE

☉〉 Corrugated aluminum tape: Longitudinal or helical corrugated AL tape

☉〉 Outer sheath: HDPE or PVC

Features

☉〉 Rated voltage: 66kV (HV transmission)

☉〉 XLPE insulation – 90°C continuous, 250°C short‑circuit

☉〉 Copper wire + copper tape shield – uniform electric field, corona suppression, fault return path

☉〉 Water‑proof layer – prevents longitudinal moisture ingress

☉〉 Corrugated aluminum tape – radial water barrier with bending flexibility

☉〉 Suitable for primary transmission, regional grid connections, underground feeders, wind farm collector networks

☉〉 Installation: direct burial, ducts, tunnels, or submarine (with protection)

☉〉 100% factory tested to IEC 60840

Product Data Sheet

66KV POWER CABLE
Rated voltage	Conductor size	Approx. Conductor dia.	XLPE Insulation thickness	Electric Capacity	Inductance		Loss of insulation	Max. D.C. Resistance
Rated voltage	Conductor size	Approx. Conductor dia.	XLPE Insulation thickness	Electric Capacity	Parallel laying	Trefoil laying	Loss of insulation	Cu	Al
KV	mm2	mm	mm	pf/m	mh/km	mh/km	w/m	Ω/km
66	240	18.4	19	136	0.757	0.508	0.175	0.0754	0.125
	300	20.6	18.5	147	0.734	0.489	0.19	0.0601	0.1
	400	23.5	17.5	165	0.708	0.465	0.212	0.047	0.0778
	500	26.6	17	182	0.683	0.445	0.234	0.0336	0.0605
	630	30.25	16.5	201	0.657	0.424	0.259	0.0283	0.0469
	800	34.23	16	224	0.633	0.406	0.288	0.0221	0.0367
	1000	41.4	16	265	0.594	0.386	0.341	0.0176	0.0291
	1200	45.28	16	282	0.577	0.375	0.363	0.0151	0.0247

Images