3GSEYQY 18/30 kV Screened Tunnel Cable

3GSEYQY is an 18/30 kV screened tunnel cable for mobile mine and tunnelling equipment and for stationary connections at high-voltage transformers, main panels and switchboards. The supplied VDE datasheet specifies three concentrically laid screened cores, circular stranded plain annealed copper Class 2 conductors, 3GI3 EPR insulation with inner and outer semiconductive layers, copper tape over each main core, PVC filler, galvanized steel wire braid with minimum 90% coverage and a red 5GM5 elastomer sheath. The source lists 48 kV AC testing, 90 °C maximum conductor temperature and 250 °C short-circuit temperature. Fixed service is −25 °C to +90 °C and mobile service is +5 °C to +90 °C. Conductor sizes in the supplied table range from 3 × 25/16 to 3 × 120/16. The braid and screening arrangement should be checked against the specified mechanical protection and installation environment before quotation. For mobile service, coordinate the requested bending and torsional duty with the support system, protective routing and termination space; verify the applicable current-carrying table for the actual ambient condition. Confirm the final conductor size, route, current calculation, termination, earthing arrangement, test documentation and delivery schedule with TEBAOFLEX.

3GSEYQY screened tunnel-cable construction

3GSEYQY uses three screened medium-voltage cores laid concentrically. Each main core has EPR insulation with inner and outer semiconductive layers, followed by a copper tape screen; PVC filler, galvanized steel wire braid and a red elastomer sheath complete the supplied arrangement.

The copper tape screens provide the documented electrical-screening layer while the ≥90% braid supplies mechanical protection. Confirm the termination and earthing arrangement against the project drawing.

Applications for 3GSEYQY

The supplied application positions this 18/30 kV screened tunnel cable for mobile operating equipment in mines, underground excavations and tunnelling environments. It is also listed for stationary connections to high-voltage transformers, main panels and switchboards.

• Mobile mining and tunnelling equipment using the stated 18/30 kV system
• Stationary high-voltage transformer, main-panel and switchboard connections listed in the source
• Underground excavation and tunnel routes where screening and mechanical braid protection are required
• Confirm route movement, cable support, terminations, earthing, current calculation and final bending arrangement before quotation

The cable is not selected by voltage alone. Provide the equipment, route, installation mode and protection requirements so the supplied construction can be checked against the actual duty.

3GSEYQY specifications

Nominal electrical and dimensional values are transcribed from the supplied 3GSEYQY datasheet. Confirm the final size, route and termination drawing before order release.

The datasheet notes that dimensions may vary with manufacturing tolerances. Other conductor sizes, packing forms and delivery lengths are available on request.

3GSEYQY standards and test references

The following references are recorded as they appear in the supplied datasheet. They are presented as standards and test references, not as a broader approval claim.

State the required standard edition, inspection scope and test documentation with the RFQ. Current carrying capacity and minimum bending radius follow the supplied DIN VDE references.