Germany enforces stringent fire-safety and environmental standards in public transport systems. During the Berlin Metro expansion, contractors required Low Smoke Zero Halogen (LSZH) control and power cables to ensure passenger safety and system reliability. QZ Group was chosen as a key supplier.
Product Supplied
Cable Type: LSZH insulated and sheathed copper cables
Voltage class: 0.6/1kV
Conductor: Stranded annealed copper (Class 5 flexible)
Insulation: Cross-linked LSZH compound
Outer Sheath: Flame-retardant LSZH
Standards: EN 50268, IEC 60332-3, IEC 60754-1/2, IEC 61034
Sizes: 2.5 mm² to 120 mm²
Matching Accessories
LSZH cable glands
Fire-resistant terminations
Halogen-free trunking and conduits
Applications & Solution
These cables were deployed in underground stations, tunnels, and control rooms. Their flame-retardant and halogen-free properties minimize toxic smoke emission during fire, ensuring safe evacuation and reduced damage to electronic equipment.
Quality Inspection & Standards
Flame propagation test (IEC 60332-3)
Halogen acid gas test (IEC 60754-1/2)
Smoke density test (IEC 61034)
Electrical and mechanical performance tests before delivery
Export & Delivery
QZ Group supplied over 500 km of LSZH cables on wooden drums, delivered in scheduled batches to match the metro construction timeline. Accessories were exported together to support a one-stop installation solution.
QZ Group Advantage
By delivering LSZH cables with strict compliance to German fire standards, QZ Group supported the safe and sustainable growth of Berlin’s public transport infrastructure. The ability to package cables and accessories together simplified logistics for the EPC contractor.
