According to installation place, acceleration (d) is the basic value to calculate the corrective actions due to seismic hazard.
Four categories of seismic hazard from 0 to 3 are defined.
Special engineering in the elevator construction is then applied to avoid injuries, people trapped in the elevator, oil leakage and out of order elevators.
A selection of corrective actions includes:
• Sling: special sling retaining devices
• Counterweight: frame and filler retaining devices
• Car door: independent car door locks
• Drive: rope retaining device on pulley
• Guided compensation chains
• Rupture valve on hydraulic systems
• Emergency power supply for rescue
• Seismic detection system.
Wittur elevator packages can also be supplied with compliance to EN81-77. Ask you Wittur contact!
Four categories of seismic hazard from 0 to 3 are defined.
Special engineering in the elevator construction is then applied to avoid injuries, people trapped in the elevator, oil leakage and out of order elevators.
A selection of corrective actions includes:
• Sling: special sling retaining devices
• Counterweight: frame and filler retaining devices
• Car door: independent car door locks
• Drive: rope retaining device on pulley
• Guided compensation chains
• Rupture valve on hydraulic systems
• Emergency power supply for rescue
• Seismic detection system.
Wittur elevator packages can also be supplied with compliance to EN81-77. Ask you Wittur contact!