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multi core control cable

8 Min Read
The PRYSMIAN Cordaflex® (N)SHTÖU (SMK)-V is the most configuration-diverse vertical spreader cable without fiber optics — offering six distinct configurations that span three fundamentally different spreader architecture types. Where the (SMK)-V-S offers a single 36×2.5 configuration and the REEL XPRT offers four standard configurations, the (SMK)-V delivers six configurations including two that exist nowhere else in the Klaus Faber catalogue: a 49×1.0 signal-only variant for spreaders with dedicated power cables, and a 20×2.5+3×CAN-BUS+2×(2×2.5)C variant with integrated digital fieldbus communication and screened control pairs.
Technical Department
on03/04/2026

PRYSMIAN Cordaflex® (N)SHTÖU (SMK)-V

The PRYSMIAN Cordaflex® (N)SHTÖU (SMK)-V is the most configuration-diverse vertical spreader cable without fiber optics — offering six distinct configurations that span three fundamentally different spreader architecture types. Where the (SMK)-V-S offers a single 36×2.5 configuration and the REEL XPRT offers four standard configurations, the (SMK)-V delivers six configurations including two that exist nowhere else in the Klaus Faber catalogue: a 49×1.0 signal-only variant for spreaders with dedicated power cables, and a 20×2.5+3×CAN-BUS+2×(2×2.5)C variant with integrated digital fieldbus communication and screened control pairs.
9 Min Read
Not every STS crane needs ETFE insulation, 56 cores, or integrated fiber optics. The vast majority of the world's operational STS crane fleet — thousands of cranes at hundreds of terminals — uses a simple, proven, 36-core control cable on the spreader reel. That cable is the Cordaflex® (N)SHTOEU (SMK)-V-S: a single-configuration workhorse with basic EPR insulation that every port electrician can strip and terminate using standard tools, a 36×2.5 + protective conductor core count that covers the circuit requirements of standard (non-automated) spreaders, and a construction that shares the premium vertical-rated architecture (Class FS, aramide, PCP rubber, ±50°/m torsion) of its more exotic siblings.
Technical Department
on03/04/2026

Cordaflex® (N)SHTOEU (SMK)-V-S

Not every STS crane needs ETFE insulation, 56 cores, or integrated fiber optics. The vast majority of the world’s operational STS crane fleet — thousands of cranes at hundreds of terminals — uses a simple, proven, 36-core control cable on the spreader reel. That cable is the Cordaflex® (N)SHTOEU (SMK)-V-S: a single-configuration workhorse with basic EPR insulation that every port electrician can strip and terminate using standard tools, a 36×2.5 + protective conductor core count that covers the circuit requirements of standard (non-automated) spreaders, and a construction that shares the premium vertical-rated architecture (Class FS, aramide, PCP rubber, ±50°/m torsion) of its more exotic siblings.
9 Min Read
SPREADERFLEX REEL XPRT (N)SHTOEU is the copper-only counterpart of the Cordaflex (SMK)-V-FO — sharing the same Class FS conductors, aramide self-supporting element, PCP rubber sheath, and 240 m/min vertical reeling capability, but without integrated fiber optics. It is designed for the large installed base of STS crane spreaders that do not require fiber optic communication — spreaders using copper-only control signals, or cranes where fiber optic data is provided through a separate dedicated cable or wireless link.
Technical Department
on03/04/2026

SPREADERFLEX REEL XPRT (N)SHTOEU

SPREADERFLEX REEL XPRT (N)SHTOEU is the copper-only counterpart of the Cordaflex (SMK)-V-FO — sharing the same Class FS conductors, aramide self-supporting element, PCP rubber sheath, and 240 m/min vertical reeling capability, but without integrated fiber optics. It is designed for the large installed base of STS crane spreaders that do not require fiber optic communication — spreaders using copper-only control signals, or cranes where fiber optic data is provided through a separate dedicated cable or wireless link.
10 Min Read
BiTcrane® (N)3GRD5G is not one cable—it is an entire festoon cable system. With over 40 standard configurations spanning four distinct product families—single-core power, multi-core control, three-phase motor power, and paired signal cables—BiTcrane provides every cable type needed to build a complete crane festoon electrical system from a single manufacturer, a single specification, a single rubber compound system, and a single 240 m/min speed rating.
Technical Department
on02/04/2026

BiTcrane® (N)3GRD5G

BiTcrane® (N)3GRD5G is not one cable—it is an entire festoon cable system. With over 40 standard configurations spanning four distinct product families—single-core power, multi-core control, three-phase motor power, and paired signal cables—BiTcrane provides every cable type needed to build a complete crane festoon electrical system from a single manufacturer, a single specification, a single rubber compound system, and a single 240 m/min speed rating.
12 Min Read
FLGOEU is the cable that nobody thinks about until it fails—and when it fails, everything stops. It is a 300/500 V self-supporting lift and pendant control cable engineered by Anhui Feichun Special Cable Co., Ltd. per VDE 0250 for the quiet, essential applications that keep industrial equipment running: the control cable hanging inside an elevator shaft that carries floor-call signals, door-open commands, and safety interlock data between the car and the controller; the pendant cable dangling from an overhead crane that lets the operator control hoist, traverse, and bridge movements with pushbuttons; the control cable suspended from a conveyor structure that feeds sensor and actuator signals to the drive system; and the pendant cord on a construction machine that connects the remote-control station to the machine's hydraulic valves.
Technical Department
on02/04/2026

FLGOEU

FLGOEU is the cable that nobody thinks about until it fails—and when it fails, everything stops. It is a 300/500 V self-supporting lift and pendant control cable engineered by Anhui Feichun Special Cable Co., Ltd. per VDE 0250 for the quiet, essential applications that keep industrial equipment running: the control cable hanging inside an elevator shaft that carries floor-call signals, door-open commands, and safety interlock data between the car and the controller; the pendant cable dangling from an overhead crane that lets the operator control hoist, traverse, and bridge movements with pushbuttons; the control cable suspended from a conveyor structure that feeds sensor and actuator signals to the drive system; and the pendant cord on a construction machine that connects the remote-control station to the machine’s hydraulic valves.
23 Min Read
The actual current carrying capacity of the ÖLFLEX CLASSIC 110 25G1.5 multicore cable presents an important distinction that often confuses engineering professionals who are unfamiliar with multicore cable ampacity concepts. The baseline ampacity, calculated under idealized conditions where a single conductor is installed in isolation and carries current at 30°C ambient temperature, is approximately 18 amperes per conductor. However, when all twenty-five conductors are bundled together in the cable and simultaneously carry load—as would occur in an industrial facility where a multiconductor cable distributes power or control signals to numerous equipment connection points—the actual safe current rating for each conductor drops dramatically to approximately 7.2 to 8.1 amperes. This profound reduction from 18 amperes (baseline) to 7.2–8.1 amperes (practical) represents the aggregate effect of multiple derating factors that reflect real-world thermal conditions: the thermal coupling between adjacent conductors (where heat generated in one conductor makes it harder for neighboring conductors to dissipate their own heat), the insulating effect of the cable's outer sheath (which traps heat rather than allowing free convection cooling), and the reduced heat dissipation efficiency when multiple cables are installed together in cable trays or conduit. Understanding why this reduction occurs and how to calculate it accurately is essential for electrical engineers designing safe, reliable control systems and power distribution systems using multicore cables.
Technical Department
on04/03/2026

Ampacity Rating: Current Carrying Capacity for ÖLFLEX CLASSIC 110 25G1.5 Multicore Cable

The actual current carrying capacity of the ÖLFLEX CLASSIC 110 25G1.5 multicore cable presents an important distinction that often confuses engineering professionals who are unfamiliar with multicore cable ampacity concepts. The baseline ampacity, calculated under idealized conditions where a single conductor is installed in isolation and carries current at 30°C ambient temperature, is approximately 18 amperes per conductor. However, when all twenty-five conductors are bundled together in the cable and simultaneously carry load—as would occur in an industrial facility where a multiconductor cable distributes power or control signals to numerous equipment connection points—the actual safe current rating for each conductor drops dramatically to approximately 7.2 to 8.1 amperes. This profound reduction from 18 amperes (baseline) to 7.2–8.1 amperes (practical) represents the aggregate effect of multiple derating factors that reflect real-world thermal conditions: the thermal coupling between adjacent conductors (where heat generated in one conductor makes it harder for neighboring conductors to dissipate their own heat), the insulating effect of the cable’s outer sheath (which traps heat rather than allowing free convection cooling), and the reduced heat dissipation efficiency when multiple cables are installed together in cable trays or conduit. Understanding why this reduction occurs and how to calculate it accurately is essential for electrical engineers designing safe, reliable control systems and power distribution systems using multicore cables.