Comparative Tracking Index (CTI) for Insulating Material group – IEC 60112

CTI is max voltage which material can withstands 50 water drops without without formation of conductive path.

CTI is max voltage which material can withstands 50 drops of water contaminated with ammonium chloride etc, without tracking, i.e without formation of conductive path, due to Humidity, Contamination or Electrical stress.

Material
Group		Comparative Tracking Index
(CTI) – in Volts
Insulating Material
group – I		600V and above
Insulating Material
group – II		400V to 599V
Insulating Material
group – IIIa		175V to 399V
Insulating Material
group – IIIb		100V to 174V
Comparative Tracking Index (CTI) – Material group – IEC 60112
Related Articles:
    Categories
    Tags
    Accuracy Aluminium Arc Fault Protection Arc Flash Arc Flash Mitigation Arc Proof Assembly Assembly Busbar Cable Copper Corrosion CT PT Demand Response ElectroMechnical Energy Analytics Energy Storage Fasteners Harmonics Humidity IEC 60947 IEC 61439 IEC 61641 IED IEEE 519 Impulse Voltage Insulating Material Insulation LOTO LV Switchgear Maximum Demand MicroGrid NFPA 70E Power Factor Power Quality Protection Renewable Energy Resilience Safety SCADA Short Circuit Surface Treatment Temperature Thermal Energy Thermal Equilibrium Utilization Categories