Insulated overhead self-supporting wires
SIP-4 under Belarus quality requirements 500017371.051-2009
SIP-4 under quality requirements 16-705.500-2006
Insulated overhead self-supporting wires are designed for nominal voltage up to 0,6/1 кV nominal frequency 50Hz. SIP-4 - Self-supporting wire with aluminium conductors, with insulation from light-stabilized cross-linked PE, without messenger wire for submains, for installation on external walls and for overhead lines.
MOTHER LODE — compacted round aluminium multi-wire.
INSULATION — light stabilized cross-linked polyethylene of black colour.
STRAND — insulated cores are twisted among themselves. The core strand has the right direction.
|Number & nominal cross-section of conductors, mm²||External diameter of wire, mm||Mother-lode DC resistance, Ohm, no more||Weight, kg/km||Permissible current loading, А, not more|
Wires resist to sunlight and rain influence.
Range of operational temperatures is from -60°C to +50°С.
Permissible ambient temperature at installation is not below -20°C.
The bending radius at installation and on supports should be equal to 10 external wire diameters.
Permissible conductor heating temperature at operation should not exceed 90°С at normal mode and 250°С - at short circuit.
The delivery length of wires is agreed at order.
Average service life of wires is 40 years.