OKL (ASPZ) Fire-resistant cable lines

OKL (ОКЛ) is an assembly consisting of a cable containment/support system, couplings (splices), junction boxes, and fire-resistant cables. It is intended for delivering electrical power to power-supply units, transmitting optical signals, control signals for notification and fire suppression equipment, and performing supervision/monitoring. The lines must remain operable under fire conditions for the period required to fulfill their functions and to evacuate people to a safe area.

General characteristics:

Operating temperature, °C	from minus 20 to plus 50
Climatic version	O1
Components of OKL (ОКЛ) (ASPZ (АСПЗ))*:	cable containment/support system; cable products; intrinsically safe junction box KSI – **; metal T-branch coupling MTM-6U
Fire resistance of cable products	15–90 min (as per configuration)
Ingress protection rating of the KSI box	not less than IP65
Overall dimensions, mm	as per configuration
Weight, kg, not more than	as per configuration

* – the composition, types of components, and their quantities are determined by the configuration.

Application area

Underground workings of mines and pits, including those hazardous due to gas and/or dust, as well as potash mines, in accordance with the explosion protection marking and operating conditions.