Urban Power Grids and Substations | Application |

As critical nodes in power transmission networks, substations require wiring systems capable of handling extreme electrical stresses while maintaining absolute reliability. Zhongzhen meets these demanding requirements through its specialized portfolio of high-voltage and low-voltage cables that form the nervous system of modern substations.

High-Voltage Transmission Systems (220kV/500kV) , For inter-substation connections, Zhongzhen's EHV cables incorporate cutting-edge technologies:

1. Advanced Conductor Design

- 99.99% oxygen-free copper conductors with compacted stranding

- Segmental conductor geometry for optimal current distribution

- Smooth surface finish to prevent insulation damage

2. Multi-Layer Insulation System

- Triple-extruded XLPE insulation with super-clean materials

- Integrated semi-conductive layers for uniform field control

- Carbon-loaded outer screen for complete discharge protection

3. Mechanical Protection

- Corrugated aluminum sheath with bituminous coating

- Double steel tape armor for underground sections

- UV-resistant outer jacket for exposed runs

Medium Voltage Distribution (10kV-35kV), For intra-substation power distribution:

- Moisture-blocking XLPE insulation with longitudinal water barriers

- Radial water-swellable tapes beneath the sheath

- Special terminations for switchgear connections

Low-Voltage Control Circuits Critical for protection and SCADA systems:

1. Multicore Control Cables

- Individual pair shielding with overall aluminum foil screen

- PE insulation for stable dielectric properties

- Dedicated drain wires for proper grounding

2. Instrumentation Cables

- Precision-matched pairs for metering accuracy

- Dual shielding (foil + braid) for EMI immunity

- Special color coding per IEC standards